Agreement Report RELAP5/MOD3.2 Post Test Calculation of the
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Agreement Report RELAP5/MOD3.2 Post Test Calculation of the
NUREG/IA-0170 International Agreement Report RELAP5/MOD3.2 Post Test Calculation of the PKL-Experiment PKLIII-B4.3 Prepared by L. Karner Siemens Energierzeugung (KWU) Freyerslebenstrasse 1 D-91058 Erlangen Germany Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 December 1999 Prepared as part of The Agreement on Research Participation and Technical Exchange under the International Code Application and Maintenance Program (CAMP) Published by U.S. Nuclear Regulatory Commission I AVAILABILITY NOTICE Availability of Reference Materials Cited in NRC Publications NRC publications in the NUREG series, NRC regu lations, and Title 10, Energy,of the Code of Federal Regulations, may be purchased from one of the fol lowing sources: 1. The Superintendent of Documents U.S. Government Printing Office RO. Box 37082 Washington, DC 20402-9328 <http://www.access.gpo.gov/sudocs> 202-512-1800 2. 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NUREG/IA-0170 International Agreement Report RELAP5/MOD3.2 Post Test Calculation of the PKL-Experiment PKLIII-B4.3 Prepared by L. Karner Siemens Energierzeugung (KWU) Freyerslebenstrasse 1 D-91058 Erlangen Germany Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 December 1999 Prepared as part of The Agreement on Research Participation and Technical Exchange under the International Code Application and Maintenance Program (CAMP) Published by U.S. Nuclear Regulatory Commission Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page Table of Contents 1 2 3 3.1 3.2 3.3 3.4 Abstract Abbreviations Introduction Description of the PKL Test Facility Description of Experiment PKLIII-B4.3 Objectives of Test PKLIII-B4.3 Initial and Boundary Conditions of the Test B 4.3 Sequence of Events Phenomenological Analysis of Test Results 4 Results of RELAP5/Mod 3.2 Analysis 4.1 Description of RELAP5/Mod 3.2 4.2 4.3 4.4 4.5 Description of Input Model Calculational Procedures and Boundary Conditions General System Response Steam Generator Heat Transfer as a Function of Nitrogen Distribution in the Primary System Propagation of Nitrogen Concentration in the Steam Generator U-Tubes Conclusions References List of Figures Figures 4.6 5 Siemens AG - Power Generation Group (KWU) L:\Kamer~pk13b43_wrr5m3.2-my.doc H30-K5314 Bencht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All dghts, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 3 Abstract The PKL III test facility (Primar-Kreis-Lauf) simulates a typical 1300 MWe Pressurized Water Reactor of Siemens/KWU. In test B4.3, the influence of non condensables on heat transfer in the steam generators during reflux condenser conditions was investigated. This report presents the results of a post-test analysis of PKL 111-B4.3 using RELAP5/Mod 3.2. A description of the input model is given, and the correspondence of measured and calculated results is discussed. The results of the calculation show differences in the distribution of nitrogen in the primary system compared to the experiment. When nitrogen was injected into the hot leg of the primary system, the heat transfer in the affected steam generator decreased. In contrast to the experiment RELAP calculated that the volumes in the adjacent steam generator did not get the full amount of nitrogen and that nitrogen was transported from the steam generators to other locations during the course of the transient. Thus the heat transfer in these steam generators later increased in contradiction to the measured values. In the steam generator tubes, RELAP calculated that the nitrogen accumulates in the descending part as predicted in the experiment. For the ascending U-tubes RELAP predicted that the nitrogen was transported to the loop seal, which was not seen in the experiment. Fluctuations occured during the course of the RELAP5/Mod 3.2 analysis of the PKLIII B4.3 experiment. This phenomenon may be the main reason, that RELAP calculates the transport of nitrogen from the steam generators into the system and predicts finally a homogeneous distribution of nitrogen in the primary system. The analysis performs an inkind contribution to the CAMP contract. Siemens AG • Power Generation Group (KWU) L:\Karner\pk13b43_wr.r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights. including rights created by patent grant or registration ofa utillity model ordesign, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 4 Abbreviations ACCU ARV ASC. Byp. CAMP CCFL CL CV, CNTRLVAR DC DE Depress., dp DESC. DH Diff. Exp. HKPM, RCP HL Int., Integr. L LOCA LPL MFLOWJ N PKL, PCL Press., P Primary-S. PWR R RDB, RPV SATTEMP SATT-Pr. SATT-Sec. SBB SBLOCA Secondary-S. SG SPW SV TEMP UPL U-tubes accumulator Abblaseregelventil (relief valve) ascending (U-tubes) bypass Code Assessment and Maintenance Program counter current flow limitation cold leg, collapsed level control variable downcomer Dampferzeuger (SG) depressurization descending (U-tubes) Druckhalter (pressurizer) difference experiment Hauptk~hlmittelpumpe (reactor coolant pump) hot leg integrated loop loss of coolant accident lower plenum junction mass flow nitrogen Primdrkreislauf, Primary Coolant Loop pressure primary side pressurized water reactor RELAP Reaktordruckbehdlter, reactor pressure vessel saturation temperature saturation temperature primary side saturation temperature secondary side StabbOndelbehdlter (rod bundle vessel) small break LOCA secondary side steam generator Speisewasser (feedwater) Sicherheitsventil (safety valve) temperature upper plenum tubes with n-profile for SGs Siemens AG • Power Generation Group (KWU) L:\Kamer\pk13b43-wr r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 0 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. Allrights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 1 Page5 Introduction The PKL III test facility simulates a typical 4 loop 1300 MWe pressurized water reactor of Siemens/KWU design. Within the PKL Ill-B4 test series, three tests have been performed to investigate the influence of non-condensables in the primary system on steam generator heat transfer. In Test B4.1 the primary inventory was 100 % and thus the influence of non condensables on single-phase natural circulation was investigated. In Test B4.2 the primary inventory was reduced to 85% which generated two-phase natural circulation. In test B4.3, by a further reduction of the inventory to 35% the influence of non-condensables on reflux-condenser conditions was investigated. In this report a post-test analysis of PKL 1l1-B4.3 using RELAP5/Mod 3.2 is presented. A description of the input model is given, and the correspondence of measured and calculated results is discussed. The purpose of this analysis is to serve as a contribution to the verification of RELAP5/Mod 3.2's ability to handle a non-condensable component in the gaseous phase properly. Siemens AG - Power Generation Group (KWU) L:\Kamer~pkl3b43_wr_r5m3.2_my.doc H30-K5314 Benrcht KWU , engl. 4.94 D transmission or use of this document or its contents is not The The reproduction, reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 2 Page 6 Description of the PKL Test Facility The PKL III test facility simulates a typical 1300 MWe pressurized water reactor of Siemens/KWU of a volume/power scale of 1:145 (Fig. 2.1). All elevations correspond to real plant dimensions. It is a large scale facility with four primary loops, which are arranged symmetrically around the pressure vessel. Each of the four loops contains a main coolant pump and a fully scaled steam generator with prototypical tubing and tube sheet. The core is simulated by a bundle of 314 electrically heated rods, with a total power of 2.5 MW, corresponding to 10% of the scaled nominal power. The primary pressure is limited to 4.5 MPa. Regarding the limited pressure of the PKL Ill test facility the scaling of the experiments falls into three general categories: The first category of experiments provides an insight into special physical phenomena, such as CCFL or the influence of nitrogen, which are expected to take place in PWR's at pressures below 4.5 MPa. The second category concerns experiments "entering" a PWR-transient at a pressure level of 45 bar. The conditions in PKL at the start of such a test are set up using code-calculations for the PWR, an example being small break LOCAs, where the important phenomena occur at pressures below 50 bar. The third category covers scenarios where phenomena occurring at high pressures in PWR's can be simulated at pressures below 50 bar in PKL, with the results being extrapolated to the original pressure (with the help of codes or comparisons with experimental results from full-pressure test facilities). The test facility is equipped with all important safety and auxiliary systems, e.g. volume control system, high and low pressure injection system, accumulators and residual heat removal system. In correspondence to KWU-type plants, four independent high and low pressure injection systems which are connected to both the hot and cold legs are simulated. The arrangement of the test facility is shown in Fig 2.1, The steam generators of the test facility are equipped with U-tubes. Each SG has 27 heat exchanger tubes in accordance to the 1:145 scale. The tubes are arranged to assemblies with 7 different lengths. The peak elevations of the longest and shortest tube correspond to the plant dimensions. Two replacement bodies are inserted in the secondary side to achieve the volume scale. A cross-sectional view is given by Fig. 2.2. Siemens AG - Power Generation Group L:\Kamerkpkl3b43_wrr5m3.2_my.doc H30-K5314 Bericht KWU . engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration (K/VIU) of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page7 At least 3 U-tubes in each SG are equipped with thermocouples for the measurement of primary side fluid temperature at different axial positions. The axial location of these thermocouples is shown in Fig. 2.3. Within the test facility there are more than 1300 locations for measurement instrumentation. This provides extensive information necessary for the understanding of all relevant thermal hydraulic phenomena. Siemens AG • Power Generation Group (KWU) L:\Kamer~pk13b43_wrr5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 3 Description of Experiment PKLIII B4.3 3.1 Objectives of Test PKLIII B4.3 Page Beginning by January 1989 the test series IIIB was initiated at the PKL test facility. Focused on accident-management procedures the majorities of tests were performed in order to investigate phenomena occurring during primary side and secondary side feed and bleed procedures. Within PKL III B4 three tests have been performed to investigate plant performance with presence of non condensables in the primary system. The investigation of the influence of non-condensables on plant performance was considered to be meaningful, because accident scenarios exist where nitrogen or hydrogen accumulates in the steam generators and reduces heat transfer to the secondary side. Nitrogen may be expelled by the accumulators in the cause of an postulated Large Break Loss-of-Coolant Accident. It is dissolved in the primary system coolant, in the liquid of the refueling storage tank, and accumulator liquid, or may be already present in the system during refueling. And hydrogen generated by metal-water reaction at the fuel cladding may accumulate in the steam generators during post-design accident scenarios. In the test series primary pressure (1 MPa) and power generation rate (2 %) have been kept constant whereas primary side inventory was different in each test. In Test B4.1 the primary inventory was 100 % and thus the influence of non condensables on single-phase natural circulation was investigated. In Test B4.2 the primary inventory was set to 85% which generated two-phase natural circulation. And in Test B4.3, by a further reduction of the inventory down to 35% the influence of non-condensables on reflux-condenser conditions was investigated. Descriptions of the PKL test facility and of experiment PKL III B4.3 is given in reference /l/through /3/ 3.2 Initial and Boundary Conditions of the Test B4.3 The test was initiated by a conditioning phase where the primary inventory has been already reduced, but no nitrogen was injected. The reflux condenser conditions resulted in an accumulation of liquid inventory in the hot legs and in the inlet regions of the SG tubes. In the hot leg a collapsed level of 1.2 m was observed. The collapsed levels in the tubes were 1.5 m. The swell level in the vessel was below the inlet junctions of the loop pipings. The loop seals were filled with water. Siemens AG - Power Generation Group (KWU) L:\Kameripkl3b43_wr r5m3.2_my.doc H30-K5314 Bericht KWU. engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration ofa utility model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page9 With the secondary side pressure (and saturation temperature) given, the primary side pressure is a system response. The primary side pressure is established to generate the temperature difference, which is necessary for stationary heat removal. In the experiment under consideration the temperature difference was 6 K. Based on a secondary side energy balance it can be concluded, that about 460 kW are transferred to the secondary side. Consequently, the primary side heat losses are about 60 kW. On the secondary side there is a heat loss of approximately 10 kW per SG. The major parameters of the stationary conditions in the primary system are summarized in Table 3.1, the secondary side conditions are summarized in Table 3.2. Primary Inventory Power Primary Pressure Core Outlet Temperature Main Coolant Pumps Pressurizer Primary/Secondary Side Temperature Difference Primary System Initial Conditions Tab. 3.1: Collapsed Level in SG Downcomer Steam Line Pressure LBA 10-40 Steam Line Temperature Feed Water Mass Flow LAB 10-40 12 m 0.87 MPa 447 K / 174 OC 0.05 kg/s / loop Secondary System Initial Conditions Tab. 3.2: 3.3 35 % 2 % (520 kW) 1.0 MPa 453 K / 180 °C (saturated) not operating isolated 6K Sequence of Events Test PKLIII B4.3 investigates the system's response to a succession of nitrogen injections periods into the primary system at various injection ports. In the course of the test the secondary pressure was reduced occasionally in order to compensate the influence of nitrogen on heat removal in the steam generators. Siemens AG . Power Generation Group (KWU) L:\Karner\pkl3b43_wr_r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D or use of this document or Its contents Snot reproduction, transmission The The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for created by patent grant or registration rights including rights, damages. All of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 10 The sequence of nitrogen injection periods and secondary side pressure operations is given in Table 3.3: Time Event 0 - 3600 s 1. period of nitrogen injection 0.25 Nm3 , 3600 s, HL 10 (10990 - 14590 s) 4870- 6310s (15860- 17300 s) 2. period of nitrogen injection 0.1 Nm3 , 1440 s, CL 30 6400 - 10000 s (17390 - 20990 s) 0.25 Nm3 , 3600 s, CL 30 10880 - 11180 s 3. period of nitrogen injection 0.25 Nm3 , 300 s, HL 20 (21870 - 22170 s) 14295 - 14595 s (25285 - 25585 s) 4. period of nitrogen injection 0.25 Nm3 , 300 s, CL 40 14735 s (25725 s) reduction of secondary pressure to .80 MPa 16000 - 19600 s (26990 - 30590 s) 5. period of nitrogen injection 1.5 Nm3 , 3600 s, HL 10 (21430 s) reduction of secondary pressure to 0.55 MPa 22840 - 26440 s (33830 - 37430 s) 6. period of nitrogen injection 1.5 Nm3 , 3600 s, CL 30 27340 s (38330 s) reduction of secondary pressure to 0.37 MPa (38990 s) End of Test Tab. 3.3: Nitrogen Injection Periods and Secondary Side Pressure Settings The amount of nitrogen which is injected in each of the first four periods corresponds to the amount which is dissolved in the accumulator liquid. During each the fifth and sixth period of injection the full depletion of a accumulator gaseous inventory was simulated. Siemens AG* Power Generation Group (KWU) L:\Kame'p4k13b43_wr.r5m3.2_my.doc H30-K5314 Bericht KWU, engt. 4.94 0 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 3.4 Page 11 Phenomenological Analysis of Test Results This chapter analyses the phenomena which occurred during the test and describes - the effect on heat transfer in the steam generator during reflux condenser mode ifnitrogen is present in the primary system, - the overall distribution of nitrogen in the primary system depending on the location of an injection - and the dependence on the primary to secondary side pressure and temperature difference. A detailed description of the test results will be given later in this report in conjunction with comparison to calculational results. The reflux condenser mode is characterized by counter-current flow of liquid and steam in the hot leg. If nitrogen is injected into the primary system, it is transported by convection (diffusion is not effective). At locations of lower temperature, such as the steam generator or reactor coolant pump, steam is condensed and nitrogen is subsequently accumulated. The quality of nitrogen is increased until the partial pressure of steam and its saturation temperature corresponds to the saturation pressure of the local temperature (e.g. secondary side). These conditions represent a thermal equilibrium, and no heat transfer or condensation occurs in such a passive area. The transition from an active heat transfer area to a passive heat transfer area is accelerated by the phenomenon that the inert gas is accumulated at the condensation film on the cooling surface. The density of the inert gas in this boundary layer is higher than in the center of the steam flow. For this reason the partial pressure and the temperature of the steam in the nitrogen enriched layer is lower than the average steam temperature and partial pressure in the steam flow. After the termination of the condensation the layer of accumulated inert gas is dispersed by diffusion. The distribution of nitrogen in the primary system depends on the location of injection. If a moderate amount of nitrogen is injected into a hot leg of the loop of the test facility, it is transported to the adjacent steam generator where an accumulation at the location of condensation takes place. A "region of inertness" or passive area is established. It proceeds from the SG outlet chambers and depending on the amount of nitrogen injected, can occupy the whole steam generator. If the hot leg is completely filled, nitrogen flows to the upper plenum and into the other hot legs. However under these conditions no permanent accumulation of nitrogen was observed in the upper plenum. The distribution of Siemens AG • Power Generation Group (KWU) L:\Kamer\pkl3b43_wrýr5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of autillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 12 nitrogen does not depend significantly on the injection rate but only on the total amount of injected nitrogen. If a moderate amount (0.25 Nm3 in 1h) of nitrogen is injected into the cold leg, under reflux condenser conditions it is accumulated in the adjacent pump, as heat losses dominate in this component and steam is accordingly condensed. If more nitrogen is injected or if the injection rate is high, nitrogen is transported via the bypass from the downcomer into the upper plenum and finally into the steam generators. The influence of nitrogen on heat transfer in the SG tubes can be compensated by lowering the secondary pressure or increasing the primary pressure. The resulting increase of temperature difference between primary and secondary side has a direct impact on heat transfer. In addition the partial pressure of steam is diminished via the accumulation of nitrogen. Therefore the concentration of nitrogen can be higher. By an increase of primary pressure the region of inertness is compressed and establishes thus a additional partial recovery of the heat transfer. Siemens AG • Power Generation Group (KWU) L:\Kameripkt3b43_wr r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 0 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 4. Results of RELAP5IMod 3.2 Analysis 4.1 Description of RELAP5/Mod 3.2 Page 13 The Mod3.2 version of RELAP5 has been developed within the Code Applications and Maintenance Program (CAMP). The code development has benefitted from extensive application and comparison to experimental data in test facilities such as LOFT, PBF, Semiscale and NRU. RELAP5 is a highly generic code, that can be used in both nuclear and non-nuclear systems involving mixtures of steam, water, non-condensables, and nonvolatile solute. A description of RELAP5/Mod3 is given in reference /4/. 4.2 Description of Input Model The nodalization scheme is shown in fig. 4.1. The core area is represented by a single axial flow channel with 8 hydraulic volumes in the heated region. The fuel rod simulators are represented by 3 heat structures (HST-10421, HST-10422 and HST-10423) with different power generation rates given by General Tables 801-803. In the test facility the downcomer consists of two pipes. Inthe RELAP input they are modeled as a single pipe. Though being rather coarse, the modeling of the test vessel corresponds to the requirements of Test PKLIII B4.3, as the phenomena under consideration occur in the SGs and the loops, and as no core uncovery occurs during the course of the experiment. Each loop is modeled separately. The hot leg is represented by 13 hydraulic volumes. Three types of SG tubes with different lengths are modeled (18, 20, 22 volumes). The loop piping between SG and pump is represented by 16 volumes, piping between pump and vessel by 5 volumes. The modeling of the piping and the steam generators is sufficiently fine to allow an adequate representation of thermal-hydraulic phenomena relevant in the test under consideration. The pumps are represented by pump components; homologic data are used, which have been determined for the LOBI test facility. The cooling of the pumps is considered. The noding of the steam generator secondary side has 16 axial nodes in the riser and 13 axial nodes in the downcomer. Siemens AG • Power Generation Group L:\Kamerkpk13b43_wr-r5m3.2-my.doc H30-K5314 Bericht KWU, engl. 4.94 D (KWU) The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 14 The nitrogen injection is simulated at the hot and cold injection port of the emergency core cooling system. To consider the flow direction of these nozzles towards the RPV, the injection junctions are connected to the outlet of the volumes in the hot legs and to the inlet in the volumes of the cold legs. The input deck includes a variety of control variables (cv). The following table comprises control variables which are of particular interest for test PKL Ill B4.3. Total power cv 7900 Drained mass of primary system cv 7500 SG collapsed levels cvs 2103, 2203, 2303, 2403 Smoothed levels in the SGs, calculated by a Lag component with a Lag time of 30 s cvs 2110, 2210, 2310, 2410 Sum of the heat transfer in the short, medium and long SG tubes of all SGs cvs 7175, 7275, 7375, 7475 Smoothed heat transfer in the SGs, calculated by a Lag component with a Lag time of 50 s cvs 7176, 7276, 7376, 7476 4.3 Calculational Procedures and Boundary Conditions The post test calculation was started to reach steady-state conditions with a significantly reduced primary inventory. A calculation was made to meet the initial and boundary conditions. During the calculation 1491 kg of liquid inventory was drained from the primary system and the inventories in the SGs were adjusted by controlling feed water flow and secondary pressure. The calculation for steady state was stopped after 5000 s. At that time the thermal-hydraulic conditions have been almost stationary. As a boundary condition during the transient nitrogen was injected into hot legs 10 and 30 and cold legs 20 and 40. These injection rates are shown in Fig. 4.2 and 4.3. As the heat transfer in the SG depends on the pressure difference and is merely independent from the absolute pressure, during the calculations the secondary side pressure was used in correspondence to the experiment as a calculational boundary condition. The development of the secondary side pressure is shown in Fig. 4.4. Additional to these presumptions the input was fitted out with control variables to get the nitrogen accumulation and nitrogen flow in the primary system. Together with the heat transfer to the secondary side the results of the RELAP5/Mod3.2 analysis were assessed against the experimental results. Siemens AG • Power Generation Group (KWU) L:\Kamer\pk13b43_wr_r5m3.2-my.doc H30-K5314 Bericht KWU , engl 4.94 D The reproduction, transmission or use of this document or its contents is not permitted whihout express written authoity. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 4.4 Page 15 General System Response The overall system response to nitrogen injection is depicted in Fig. 4.5 through Fig. 4.7. At first the measured system behavior is discussed. Fig 4.5 shows the pressure history of primary and secondary side. The pressure increase following the 1. period of nitrogen injection into HL10 (0 - 3600 s) is very moderate. The 2. period of injection into CL30 (4870 - 10000 s) has no effect on primary system pressure. The pressure increase during the 3. injection period into HL20 (10880-11180 s) is more pronounced than in period 1. At the end of injection period 4 the secondary side pressure is reduced for the first time and generates a simultaneous decrease of the primary side pressure. The subsequent injection period 5 with large amounts of nitrogen results in an continuous increase of primary pressure which was compensated at the end of this injection period by a further adjustment of the secondary side pressure. The pressure difference between the primary and secondary side results in a difference of the corresponding saturation temperatures, which determines the overall heat transfer. The history of calculated and measured temperatures and temperature difference is shown in Fig. 4.6 and 4.7. The initial temperature difference before nitrogen injection calculated by RELAP5/Mod3.2 is 4 K compared to 6 K in the experiment. The temperature decrease on the secondary side shown in the experiment during the first period is to be explained by a local effect (plume of cold water at the thermocouple). The temperature difference which is formed at the end of each injection period is summarized in the following table: Siemens AG - Power Generation Group (KWU) L:\Kameelpk13b43_wrr5m3.2_my.doc H30-K5314 Bencht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not pernitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page Experiment RELAP pre pressure reduction post pressure reduction pre pressure reduction post pressure reduction 6K * 4K * 1. Period (HL 10) 6K * 5K * 2. Period (CL 30) 6.5 K * 5K * 3. Period (HL 20) 8K * 7K * 4. Period (CL 40) 8K 9K 7K 8K 5. Period (HL10) 19K 23K 18K 25K 6. Period (CL 30) 27 K 30 K 30 K 42 K Initial Condition 16 • no pressure reduction performed Tab. 4.1: Measured and Calculated Temperature Differences between Primary and Secondary System in Test PKL III B4.3 For the temperature differences shown in table 4, the primary temperature is taken from the upper plenum as calculated and measured, respectively, and the secondary temperature (for the calculation the same as for the experiment) Fig. 4.6) corresponds to the secondary saturation pressure. Injections of small amounts of nitrogen into a cold legthdo not affect heat transfer th to secondary side. For the 5" (hot leg injection) and 6 (cold leg injection) injection periods, heat removal was too small to generate a stationary condition. This non equilibrium resulted into an almost constant pressure increase. At the end of each of both periods, secondary side pressure has been reduced in the experiment. The first temperature difference corresponds to secondary side pressure before reduction, the second temperature difference is the respective value after pressure reduction. As primary side pressure follows the secondary side pressure, the reduction of pressure in the primary system results into an extension of the volume of inertness (passive area) in the steam generators. Therefore the temperature difference between both systems is expected to be higher with a lower pressure level. In the following the RELAP5 results are compared to the measured values. During steady state (before injection of N into the system) RELAP5 shows a lower (50%) temperature difference between primary and secondary side (Fig. 4.7, 4K calculated by RELAP5, 6K measured), although the total heat transferred to the secondary side is calculated to be lower in RELAP5 than in the experiment Siemens AG - Power Generation Group (KWU) L:\Kamer\pkl3b43_wrjr5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 17 (440 kW vs. 460 kW). This indicates a small overestimation of heat losses on the primary side in the RELAP5 model. For the first period (nitrogen injection of 0,25m 3 in 1 hr into HL1 0) RELAP5 calculates a small response of the system behavior (AT increase by 1K to 5K); the measured system response cannot be clearly interpretated, because of the shown anomalies (Fig. 4.6) but indicates almost no increase of the primary temperatures. The RELAP5 results (AT increase) show that the decrease of heat transfer in SG 10, because of nitrogen injection, cannot be compensated completely by the remaining SGs (as in the experiment). Both the experiment and RELAP5 show almost no influence of the nitrogen during the 2nd injection of 0,25m 2 N in 1 hr into CL30 on the system behavior period. In the 3rd period (0,25m 3 N in 5min into HL 20) RELAP5 shows a similar system response to the nitrogen injection as measured (1,5K vs 2K). In the 4th period with 0,25m 3 nitrogen injection in 5min into CL40 both RELAP5 and the experiment show no system response. Experiment and RELAP5 define an increase of 1K of the primary temperature after the depressurization. During the 5" and 6t' period of nitrogen injection, RELAP5 and the experiment show a continuous increase of primary pressure and consequently an increase of the temperature difference primary to secondary side, which are terminated by the secondary side depressurization. 4.5 Steam Generator Heat Transfer as a Function of Nitrogen Distribution in the Primary System The distribution of nitrogen and its influence on steam generator heat transfer was analyzed. The heat transfer in the SG depends on the distribution of nitrogen in the U-tubes. In the RELAP5/Mod 3.2 calculation, the nitrogen accumulations in all relevant components can be shown using control variables. These control variables serve as a basis to analyse the nitrogen transport. The calculated nitrogen distribution is depicted in Fig. 4.12 through 4.37 in comparison to the experimental values. The nitrogen mass distribution of the experiment shown in the figures is estimated from the test report description. Additional the heat transfer of the individual SGs can be derived from the live steam flows, hence these values are proportional to the heat transfer, when the level in the SG secondary side is kept constant by the feedwater injection (see Fig. 4.38). The heat transfer in the SGs of the calculation was derived directly via the heat flux parameters of the U-tubes (see Fig. 4.39). Siemens AG - Power Generation Group (KWU) L:\Karne rpk13b43_wrj5m3.2_my.doc H30-K5314 Bericht KWU. engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights. including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 18 Consequently the calculated heat transfer of each SG can be compared with the experiment. (Figures 4.40 through 4.43), based on the nominal heat transfer rate in one SG of about 115 kW. When the heat transfer declines in a SG by accumulation of nitrogen, the inertness is compensated by the increase of the steam temperature in the primary system, which leads to a better heat transfer in the SGs which are free from nitrogen. Fig. 4.37 confirms a good agreement of the integral nitrogen inventory in the system between experiment and calculation and the correctness of the boundary conditions. Differences between calculated and measured heat transfer can be explained via the calculated differences in nitrogen distribution. 1s' Nitrogen Iniection of 0,25m 3 into the Hot Leg of Loop 10 in lhr The experiment shows the following: During the 1St nitrogen injection period (Fig. 4.2) the heat transfer in SG 10 decreased (Fig 4.40) from the initial value to 20kW. The development of a passive area in the SG10 can be seen in Fig. 4.8 and 4.9. The total mass of 0,3kg N injected is accumulated in HL10 and in SG10 (Fig. 4.12 to 4.13). To preserve the total heat removal the heat transfer in the other SGs increased (see Fig. 4.41 to 4.43) without a pressure and temperature increase in the primary system (Figs 4.5, 4.6). RELAP5 shows the following: The heat transfer in SG10 decreased from 110kW to less than 10kW at 1200 sec (Fig. 4.40). This loss of total heat transfer of about 100kW (compared to approx. 40kW in the test) cannot be compensated by the 3 other SGs without a small temperature and pressure increase at the primary side (Figs 4.5, 4.6). The evaluation of the nitrogen distribution shows that less N is accumulated in SG1O compared to the experiment (Fig. 4.13). The increase of pressure in the upper plenum and at the SG outlet leads to oscillatory loop seal clearing (Fig. 4.44) and consequently to the N transport to the RCP (Fig. 4.15, 4.16). 2nd Nitrogen Iniection of 0,25 m3 into the Cold Leg of Loop 30 in 1hr The experiment shows no significant change of heat transfer in all 4 SGs (Figs 4.40 to 4.43) during the N injection. The nitrogen injected is accumulated in the DC only (Fig. 4.36). The RELAP5 calculation shows also no significant change in overall heat transfer. SG10 recovers slightly around 8000 sec to about 40kW heat transfer (Fig. 4.40). The nitrogen distribution calculated differs from the experimental results. RELAP5 calculates a nitrogen flow to the UPL and closure head (Fig. 4.36), which is an indication of an underestimation of condensation in the pump region, resulting in positive pressure difference CL to UPL and closure head. Siemens AG - Power Generation Group L:t<arner~pkI3b43_wr-r5m3.2_my.doc H30-K5314 uerichtKWU, engl. 4.94 D (KWU) The reproducion, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 19 3rd Nitrogen Iniection of 0,25m 3 into the Hot Leg of Loop 20 in 5 min The experiment shows a significant decrease of heat transfer in SG20 to 60kW (down from 140kW) (Fig. 4.41). This decrease is compensated by a permanent increase of heat transfer in SG30 from 160kW to about 230kW (Fig. 4.42). Beside short peaks, SG10 and SG40 remain unaffected. The nitrogen accumulates primarily in the SG20 and partly in the loop between SG20 outlet and loop seal. The RELAP5 calculation shows a much stronger decrease of heat transfer down to 0 in SG20 with a continuous recoverment thereafter (Fig. 4.41). SG30 and SG40 show an increase from 140kW to 160kW and a continuous decrease thereafter. SG10 shows a permanent increase of heat transfer from 40kW to 130kW (no increase in the test). Fig. 4.23 shows that not all injected nitrogen is calculated to accumulate in the SG20, it partly flows towards the UPL. The amount of nitrogen in SG20 decreases continuously (Fig. 4.20), thereby causing an increase of heat transfer (Fig. 4.41). 4" Nitrogen Iniection of 0,25m3 into the Cold Leg of Loop 40 in 5 min The experiment shows no significant change of heat transfer in any of the 4 SGs before the depressurization (Figs 4.40 to 4.43). The secondary pressure decrease leads to a temporary peak of heat transfer in all 4 SGs. The nitrogen is accumulated in DC region only. The RELAP5 calculation shows also no significant response of the system till the depressurization. Only SG20 shows a significant reaction during the depressurization. The nitrogen is calculated to accumulate first primarily in the DC and partly in the UPL. Thereafter it is redistributed from the DC region into UPL and the rest of the primary system (Fig. 4.36). 5" Nitrogen Injection of 1,5m 3 into the Hot Leg of Loop 10 in 1hr The experiment shows no overall change in heat transfer during the injection period (Figs 4.41 to 4.43). SG30 shows a decrease and a consecutive increase, whereas SG40 shows in the same time period an increase and a decrease of heat transfer. The actual decrease of heat transfer by condensation in the U-tubes is compensated by a continuous increase of primary pressure and corresponding saturation temperature (Fig. 4.5). The nitrogen accumulates in all 4 SGs in parallel (Figs 4.13, 4.20, 4.27, 4.32). The pressure reduction creates similar reactions like in period 4. RELAP5 calculates a similar overall system response regarding the total heat transfer and pressure increase in the primary system (Fig. 4.5 and 4.40 to 4.43). SG10 looses completely its heat transfer capacity during the injection. SG20 reaches full capacity (up to 160kW) again and SG30 and SG40 increase also their Siemens AG - Power Generation Group L:\Kamerýpkl3b43_wrr5m3.2_my.doc H30-K5314 Bericht KWU, engl 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration (KWU) of a utillity model or design. are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 20 heat transfer by 20kW. The nitrogen is calculated to increase in all 4 SGs similar to the experiment. 6h Nitrogen Injection of 1,5m 3 into the Cold Leg of Loop 30 in 1 hr The test shows a strong decrease of heat transfer in SG30 at 2400 sec down to about 80kW. The other 3 SGs raise their heat transfer. The actual decrease in the condensation rate in the SG U-tubes is compensated by a continuous increase of primary pressure and corresponding saturation temperature. The nitrogen is accumulated in all 4 SGs in parallel (Figs 4.13, 4.20, 4.27, 4.32). The RELAP5 calculation shows a comparable result regarding the primary pressure response (Fig. 4.5). SG20 and SG30 have a higher calculated heat transfer compared to the test, whereas SG40 has a lower calculated value. The nitrogen is calculated to increase in SG20, 30 and 40 but remains nearly constant in SG10. Conclusion In this chapter we have discussed the nitrogen distribution in the PCL and the influence on the heat transfer in the SGs during the 6 nitrogen injection periods. Comparing the nitrogen distribution in the system between the experiment and the RELAP calculation significant differences were shown in the results. In the RELAP calculation, the nitrogen was accumulated at the measured locations but to a different amount. The U-tubes of the SGs were calculated to receive enough inert gas to influence the heat transfer as predicted in the experiment. The overall heat transfer response is predicted by RELAP5 in a similar way compared to the test. But differences are shown in the distribution of the heat transfer among the SGs. In the experiment the heat transfer differs from 60 kW to about 250 kW (Fig. 4.38), while in the RELAP calculation the heat transfer rate is at a uniform level near 150 kW, but for the SGs with passive areas (Fig. 4.39). 4.6 Propagation of Nitrogen Concentration in the Steam Generator U-Tubes Based on the evaluation of the experiment for reflux condenser operation with a hot injection of nitrogen, in the course of this test a front of high nitrogen concentration is formed in the SGs, which moves through the SG from the outlet chamber to the inlet chamber. An indication for this movement is the measurement of fluid temperatures in the SG tubes (see Figs 4.8 to 4.11), because steam temperature in this region decreases according to the partial pressure. In the evaluation the presence of nitrogen in the U-tubes of the SGs has been verified in this manner. Siemens AG -Power Generation Group L:\Kamer\pk13b43_wrjr5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D (KWU) The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 21 As described in chapter 4.5 the heat transfer in SG 10 and SG 20 did not exactly correspond with the prediction of the experiment. These SGs were effected by hot leg nitrogen injection during the periods 1 and 3. In the experiment they showed a constant heat transfer of about 10 kW resp. 60 kW after the 3rd injection period (Figs 4.40, 4.41). In the RELAP analysis, SG 10 was activated again when nitrogen was injected into the hot leg of loop 20 and the heat transfer in SG 20 collapsed totally. Later on, in SG 20 the heat transfer increased continuously to about 150 kW after the termination of the 3rd nitrogen injection. This calculated increase of the heat transfer in the RELAP5/Mod 3.2 analysis is not shown in the experiment and should be analysed closer. As the phenomena in each U-tube are similar, only results of the longest tube of SG 10 and 20 are presented here. When condensation takes place in the U-tubes, heat is transferred to the secondary side. Another criterion for heat transfer is the temperature difference between the steam in the U-tubes and the secondary side of a SG. In figures 4.8 through 4.11 steam temperatures and secondary side temperatures are depicted for the ascending and descending U-tubes. The temperature differences confirm the heat transfer shown by the steam condensation in the figures 4.49 and 4.50. Furthermore the temperature differences between the saturation temperatures and the steam temperatures in figures 4.8 through 4.11 indicate the presence of nitrogen in the U-tubes as predicted in the experiment. Figures 4.49 and 4.50 of the RELAP calculation show the generation of condensate in the respective SG for the ascending and descending U-tubes. As predicted in the test, the condensate generation in the descending part decreased earlier than in the ascending tubes, caused by concentration of nitrogen during condensation of steam and by the flow of nitrogen from the ascending part to the descending part together with steam. At 1000 s, generation of condensate in the descending U-tubes of the SG 10 (Fig. 4.49) has been stopped totally by reaching a saturated state of the mixture. At 4000 s in SG 10 the nitrogen inventory in the descending part decreased while it was constant in the ascending tubes (RELAP calculation, Fig 4.17). The reason for this behavior shows the integral nitrogen flow at the inlet and outlet of pipe 320 (RELAP calculation, Fig. 4.18). Nitrogen that flowed to the loop seal (RELAP calculation, Fig. 4.14) has been withdrawn from the ascending U-tubes. The same behavior of the RELAP calculation showed SG 20 at 11500 s (Figs 4.24, 4.25). Siemens AG • Power Generation Group (KWU) LI\Kamerrpkl3b43wr_r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including nghts created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 22 Therefore the heat transfer behavior calculated by RELAP5 of SG10 and SG20 after nitrogen injection into their corresponding hot legs can be explained by the nitrogen transport out of the SG U-tubes into SG outlet and the adjacent loop. In the experiment the nitrogen obviously remains in the U-tubes of the affected SG (see Figs 4.13, 4.14 and 4.20, 4.21). Siemens AG - Power Generation Group (KWU) L:\Kamer\pkl3b43_wr r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights. including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 5 Page 23 Conclusions The PKL Ill test facility simulates a typical 1300 MWe pressurized water reactor of Siemens/KWU design. In Test B4.3, the influence of non-condensables on reflux condenser conditions was investigated. This report presents a post-test analysis of PKL III B4.3 using RELAP5/Mod 3.2. A description of the input model is given, and the correspondence of measured and calculated results is discussed. The main findings of the comparison of RELAP5/Mod 3.2 results with the PKLIII B4.3 experiment are as follows: The general system response (pressure, temperature) of nitrogen injection in the primary system is calculated by RELAP5/Mod3.2 quite well. In a detailed evaluation RELAP5 calculates a non conservative behavior of heat transfer for small nitrogen injections effecting a particular SG. This statement can be concluded from the course of the heat transfers in the SGs 10 and 20 ( see chapter 4.5 and 4.6).Thus a too large calculated heat removal from the primary system underestimates the effect of nitrogen on the emergency core cooling in loss of coolant accidents. When the steam flow of the reflux condenser operation is terminated in a SG caused by inertness, less nitrogen of the injection is transported to the SG U-tubes. For this reason first a smaller nitrogen inventory in the U-tubes of a SG has been calculated to accumulate as predicted in the experiment and later on the nitrogen has been calculated to leave the SG (chapter 4.6). Looking at the figures of the transient, it is shown that RELAP calculates small fluctuations which transport nitrogen in the system without physical background. In a long term behavior, because of this numerical instability RELAP will predict a homogenous distribution of the nitrogen in the primary system. Siemens AG • Power Generation Group (KWU) L:\Kamer\pki3b43_wr_r5m3.2_my.doc H30-K5314 Bericht KWU , engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights.including rights created by patent grant or registration of a utiIlity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 24 References /1/ K. Umminger et al Station Blackout Experiment in PKLIII Test Facility and RELAP5/MOD2 Analyses ICONE-3, Kyoto Japan, April 1995 /2/ P. Weber et al. PWR-Related Integral Safety Experiments in the PKLIII Test Facility SBLOCA under Beyond-Design-Basis Accident Conditions NURETH-7 Saratoge Springs, USA. Sept 95 /3/ B. Schoen, P. Weber Large Scale Experiment on Two-Phase Flow and Heat Transfer with Nitrogen in a Steam Generator under SBLOCA Conditions Int. Symposium on Two-Phase Flow Modelling and Experimentation Rome, Italy, Oct. 1995 /4/ Idaho National Engineering Laboratory RELAP5/MOD3 Code Manual NUREG/CR-5535 INEL-95/0174 Vol. I - VII "The reproduction, transmission or use of this document or its contents is not Siemens AG - Power Generation Group (KWU) L:\Kamerkpk13b43-wr-r5m3.2-my.doc H30-K5314 Beoncht KWU, engl. 4.94 D permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utfllitymodel or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 25 List of Figures Fig. Text 2.1 2.2 2.3 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 View of PKLIII Test Facility Cross-Sectional View of a PLK Ill Steam Generator Axial Locations of Thermocouples in SG tubes Nodalization of the PKL III Test Facility with Respect to the B 4.3 Experiment Nitrogen Injection Rate into Hot Legs 10 (X) and 20 (- -) Nitrogen Injection Rate into Hot Legs 30 (X) and 40 (- -) Secondary System Pressure RELAP (X), Experiment (+) Primary Pressure RELAP (X), Experiment (Z), Secondary Pressure RELAP (+), Experiment (Y) Primary Temperature RELAP (X), Experiment (Z), Secondary Temperature RELAP(+), Experiment(Y) Temperature Difference Primary-Side - Secondary-Side RELAP(X), Experiment(+) Fluid Temperature SG 10, Ascending U-tubes RELAP(X), Experiment(+), Level 0.3m, Saturation Temperature Secondary Side(Z), Saturation Temperature Primary Side(Y) Fluid Temperature SG 10, Descending U-tubes RELAP(X), Experiment(+), Level 0.3m, Saturation Temperature Secondary Side(Z), Saturation Temperature Primary Side(Y) Fluid Temperature SG 20, Ascending U-tubes RELAP(X), Experiment(+), Level 0.3m, Saturation Temperature Secondary Side(Z), Saturation Temperature Primary Side(Y) Fluid Temperature SG 20, Descending U-tubes RELAP(X), Experiment(+), Level 0.3m, Saturation Temperature Secondary Side(Z), Saturation Temperature Primary Side(Y) Nitrogen Mass Loop 10 Hot Leg + SG Inlet Nitrogen Mass Loop 10 Steam Generator U-tubes Nitrogen Mass Steam Generator 10 Outlet to Half Loop Seal Nitrogen Mass Loop 10 Half Loop Seal to RPV Inlet Integrated Nitrogen Injection Loop 10 Hot Leg(Z), SG-Side(X), RPV-Side(+) Nitrogen Mass SG 10, Pipe 320 Ascending(X), Descending(+) U-tubes Integrated Nitrogen Mass Flow SG 10, Pipe 320 Inlet(X), Outlet(+) Nitrogen Mass Loop 20 Hot Leg + SG Inlet Nitrogen Mass Loop 20 Steam Generator U-tubes Nitrogen Mass Steam Generator 20 Outlet to Half Loop Seal Nitrogen Mass Loop 20 Half Loop Seal to RPV Inlet Integrated Nitrogen Injection Loop 20 Hot Leg(Z), SG-Side(X), RPV-Side(+) Nitrogen Mass SG 20, Pipe 420 Ascending(X), Descending(+) U-tubes Integrated Nitrogen Mass Flow SG 20, Pipe 420 Inlet(X), Outlet(+) Nitrogen Mass Loop 30 Hot Leg + SG Inlet Nitrogen Mass Loop 30 Steam Generator U-tubes Nitrogen Mass Steam Generator 30 Outlet to Half Loop Seal Siemens AG • Power Generation Group L:\Kamerkpkl3b43_wr_r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration (KWU) of autillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37 4.38 4.39 4.40 4.41 4.42 4.43 4.44 4.45 4.46 4.47 4.48 4.49 4.50 Page 26 Nitrogen Mass Loop 30 Half Loop Seal to RPV Inlet Integrated Nitrogen Injection Loop 30 Cold Leg(Z), RPV-Side(X), SG-Side(+) Nitrogen Mass Loop 40 Hot Leg + SG Inlet Nitrogen Mass Loop 40 Steam Generator U-tubes Nitrogen Mass Steam Generator 40 Outlet to Half Loop Seal Nitrogen Mass Loop 4 Half Loop Seal to RPV Inlet Integrated Nitrogen Injection Loop 40 Cold Leg(Z), RPV-Side(X), SG-Side(+) Nitrogen Mass Closure Head and UPL (X), DC(+), LPL Core and Core-Bypass(Z) Nitrogen Mass Primary System RELAP(X), Injected Nitrogen Mass(+) Heat Transfer Experiment SGs 10(X), 20(+), 30(Z), 40(Y) Heat Transfer RELAP (smoothed) SG 10(X), 20(+), 30(Z), 40(Y) Heat Transfer SG 10 Experiment(X), RELAP(+) Heat Transfer SG 20 Experiment(X), RELAP(+) Heat Transfer SG 30 Experiment(X), RELAP(+) Heat Transfer SG 40 Experiment(X), RELAP(+) Collapsed Level Loop Seal 10 SG-Side RELAP(X), Experiment(+) Collapsed Level Loop Seal 20 SG-Side RELAP(X), Experiment(+) Collapsed Level Loop Seal 30 SG-Side RELAP(X), Experiment(+) Collapsed Level Loop Seal 40 SG-Side RELAP(X), Experiment(+) Collapsed Level RPV RELAP Core(X), DC(+); Experiment Core(Z), DC(Y) Condensate Generation SG 10, Pipe 320 Ascending(X), Descending(+) U-tubes Condensate Generation SG 20, Pipe 420 Ascending(X), Descending(+) U-tubes Siemens AG - Power Generation Group (KWU) L:\Kamer~pkl3b43-wr-r5m3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 0 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a ability model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 27 Figures Siemens AG - Power Generation Group (KWU) L:\Kamerkpk13b43_wr-r5m3.2-my.doc H30-K5314 Bericht KWU, engl. 4.94 D reproduction, trassttIssion or use of this document or its contents is not The The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 28 Abb. 2.1: View of PKLIII Test Facility Siemens AG • Power Generation Group (KWU) L\Kamer\pk13b43_wrr5rm3.2_my.doc H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a u.tility model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted 29 Page 00 E A thermocouple SG tube Fig. 2.2: Cross-Sectional View of a PKL III Steam Generator Siemens AG - Power Generation Group (KWU) L:\Kamer\pk13b43_wr.r5m3.2-my.doc H30-K5314 Bericht KWU, engl. 4.94 D replacement bodies The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 30 Hohe [mmI Ebenez 10310 9975 9635 9300 8965 8625 8 290 MIA 6 700 VtA 5000 HIA VJA 2880 2 000 1 300 G/A F/A E/A "700 D/A 300 150 0 CIA B/A A/A tf Etntfitf Austritt Fig. 2.3: Axial Locations of Thermocouples in SG tubes Siemens AG -Power Generation Group (KWU) L:\Kamer\pk13b43_wrjr5m3.2_my.doc H30-K5314 Bericht KWU. engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Report-No.: KWU NDS1 /98/ E2041 Handling Restricted Page 31 Fig. 4.1 :Nodalization of the PKL Ill Test Facility with Respect to the B 4.3 Experiment Siemens AG • Power Generation Group (KWU) L:\Kamer~pkt3b43_wrr5m3.2-my.doe H30-K5314 Bericht KWU, engl. 4.94 D The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders willbe liable for damages. All rights, including rights created by patent grant or registration of a utillity model or design, are reserved. Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben 0 z This document Is subject to the restrictions set forth on the first or title page 25. 5.98 6:43: 3 X2) DOKU.980513.1842.14668 M CD =~ -o CL 0 Mass Flow (kg/s) ............................ ........... ....................... U.UU I4 ........................... 0 ................... ; ................... .. . ............................. >+-I-+ (D ~RZ MFLOWJ911000000 MFLOWJ921000000 iJ. 0.0010 0 C CLz S........................... i.............. .. . . ............ ...................... ........................... ................. .................. o ........ ....... ..... . .. . . ! ................... S.... 0.0008 ........................ ........................... .............. .. . .. .. . .. . .. . ... . . ...... ............... . .. . ........................ ...i .......................... S... ........ ............... ..................... ............ ............. ....... ........... .. ...... .. ......... "................. 0.0006• ..................... .................. ................... S............................ ..................... .. ... .. ........... .......... .................... "'i................ 0.0004 M X .......... .......... .................. ................ S........................... ...................... . ........................... . ................. ..... ... .. ...... 0.0002 S........................... "U .0 -U i 0.0000o 0 I 2 4 6 10 12 Depress. dp N Injection I *1r 8 14 Time(s) d 1. h. leg 10 2. c. lea 30 3. h. le 20 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.2: Nitrogen Injection Rate into Hot Legs 10(X) and 20(--) 4. c. lea 40 16 .S . 1 18 11110 5. h. len 10 1 I -, 2 dp 22 24.. 2I 28 .26 dp "*103 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben U) 0 :D z This document is subject to the restrictions set forth on the first or title page 25. 5.98 6:43: 4 DOKU.98051 3.1842.14668 C1 (D C. 0 Mass Flow f(i AA 0 (kg/s) ......................... ............ 0 TU.UU I " ] i i i ! i ii i i [ X----X MFLOWJ863000000 -l----+ MFLOWJ873000000 CD I (') M.% CD CL 0.0010 0 z ..................... ........................... ...................... ...... I ............... ......... 0 m 0.0008 ........ ........... ........................... ........................... ........................... ...... .. .... ... . 0.0006 ................ ............ ..... . ......... 0.0002 ................ .................. ....... .............. ......... ........................................ ........................... ... . . .. ... . . . ............. . .. . . ................... ....i .. +... ............. ..... ...................... ............. " 2I 44I6 I 6 ' I I 8I 1i0 ............... 141 12 1. h. leq 10 2. c. le.q 30 3. h. leg 20 ........... .. .......... (0 CD Wj CO, 16 18 Time.s) s•)'p -p Depress. dp .............. ...... ......... /i II N Injection .. . .................................................... ........................... ................. 0.0000 ",I 0 I I .. .. . .. .. . .. ....... ......... . ... .. .. ... .. . . ... .. . . . . . . . 0.0004 0 ...... ............ 4. 0. leo 40 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.3: Nitrogen Injection Rate into Cold Legs 30(X) and 40(- -) 2 22 24 dp 5. h. leo 10 26 28 dp 6_ c. l•.n 30 *103 Dieses Blatt unterliegt den WeitergabebeschrAnkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 6:43: 4 DOKU.980513.1842.14668 a- z ;: ;ý (R0 DO :. SPressure (Pa) ..... ................. .......................... .......... X-XP74001000 SP_ 1.8 . .............. ............ 737 C: .......................... CL0 ............................................. 1 .6 . .......................... .......... ........................... .............................. *106 0 D= D) 2 .0 ...... "2" 1. .... .......................... 1 .4 . ........................... m ..... ......... .................................... ... i......................... ............ .......... .............................. ..................................................................................................... Q- 0( S............... .................... .. ............................ .................... ........ ........ .................. . ......................... . 1.2. . ............... 1.0. ............ ................................................ .. ... ... ... ... ....... ....... . ... ... ... .... . 0.8 . ..... . ..... ---- ................... .•........................... • ..................... ...... ' ........................... ............ ........................ ! .......... .•..... . ..... .. ...... .... .............. ... ............ ......................... . ..................... .. .. ............ ............. . 0.6. 0.4 S. . . . ............ . .. . i . ............................. 0 .42 ........................... 0 .2 , ,...., . 2 4 0.0- ............ .............. ................. .. . . . . . . . . .... . . . . ............ I I I 6 Ii I I, I 8 I I -- - -l 10 I I F -I' 12 141 Time_ 1. h. leg I 10 -U CD Depress. dp N Iniection ...... ............................. ............. . . (0 I 0 ............... ......................... i..................... . .... ............. ..i.......................... ................ .. 2. c. leg 30 3. h. leg 20 s) 4. c. leg 40 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.4: Secondary System Pressure RELAP(X), Experiment(+) 16 18 2 212' 1 '214 ' 1 '216' dp 5. h. leg 10 1 '218 dp 6. c. leg 30 T *103 Dieses Blatt unterliegt den Weitergabebeschr&nkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 6:43: 5 -I U) 0 z DOKU.980513.1842.14668 CD 0 -o Pressure (Pa) ..... ...... ....... ... . ........ ...... .......... ......... . ..... ................ ....... ........... ........................... 2 .0 - ............... -.......... i........................ - .- ............................ --_.............. - - --- C z 0 (D X-X P220010000 +--±+P740010000 ............. ........... ............... .. ............ ........................ ..... ...... ...... .............................. 1.8 "..... ....... .............. ,1.6 0)i .z_. CL Y-Y P737 C: z 0• CO . ........ ..... ,. ......................... ........................... ........... .............. ............ 1 .6 . .................................... ..................... ............................. ........................... OD m ................ ................................ •.......... ........................... ............ ............... .................... 1 .4 . ..... 1.2 . ............... . z ...................... ............. .............. ............... 0 S...................... . . 1.2o T L .......... S........... ................ ........................... ............................ ............... ......................... ........................... ....................... 4 -....................... 4........................... 0 .8 i...................... u........................ . .+ .. _......- S........................... i ........... ....... ....I........... ..... "... ....... .. . ... ...... ...... ......... . ....... ...... 0 .6 . ................ 'A S........................... i........................... i...................... ... ................. ............................. ............................ ........................... ........................... .............. 0.4 . ............ ................ ................................ i.................... .... i............................... 0................ S............................ i. .................. ... . ....... -U ... . . ........... . ............................ . ........................... 0 CA) 01i , . i . , . . ,.-. 0.0 2 4 I I 6 8 10 12 Depress. dp N Injection i14 Time s) _dp 1. h. leal 10 Co SD 2. c. leql 30 3. h. lea 20 4. c. leg 40 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.5: Primary Pressure R(X), Exp.(Z), Secondary Press. R(+), Exp.(Y) 16 18 0 5. h. leg 10 2@ " 22 24 dp 26 '28 dp 6. c. leg 30 *103 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelselte bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 6:43: 6 DOKU.980513.1842.14668 = Temperature (C) i......................... .................................................... i........................ ................... ............. f...................................... 190 . ........................... .... ........... .......... ................ 1 8 5 -. . .. . .............. . .. . .. .. . .. .. .. ............. i. .... . .. ..!i. .................... ..... i.................. .. ....ii. .... . .. .... .......... ........... i .. . ................................. .. .. .. .. .. .. .. " .. ........... 2 • .. .. .... .- 180 ... -- --- ! X--X SATTEMP22001 . - -. \ . ........ .I.. +- Y .. ... ......... .. ...... ...... . ... : SA T T E M P 74 0 0 1 TEMP 1 7 .'.¥...... .. t...... . ! .... "17"1+ -f 1............. 0. ........... ..... • ................. .... .................. .... ..... .......... ............... .............. .................. : . 1650 ... CD I, .i- -C ....... ....... ...... ......... ,................... ...................... . ............................. ...................... + " -' -+ . 7 7i ...'... ... .................................... •. ............................ ............ .... .................................... f.... ....................... i........................ . . .......... ..... • ......................... .:............................ •.................. r .................... ........ ........................... ...................... ..... ........................ ........................... ........................... ........................... .i...... .... .. ........ ... .. ... ... .. ... .. 145 ......... ........................................... ................................... ,.......... ............... .................. 140o .............................. ............... ... ............ ..... ............... ........ .......... .......... ..... ..................... .... ........... ............. ...... ... ............... ............ ................. ......... . .................... ... ... ........................ ........................... . ..................... ... Depress. dp N Injection 0 2 1. h. leg 10 4 6 8 2. c. leg 30 10 12 3. h. leg 20 114/ Time ds) 16 4. c. leg 40 Comparison of Experiment and Analysis PKIL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.6: Primary Temperature R(X), Exp.(Z), Second. Temp. R(+), Exp.(Y) • .. ......................... .•...--................. , ...................................... ............................................................ ....................................................... ............... YuY 0.. 146. .. .. .. .. 1750 ý - ................................................. ..................... ....................... 18 p . .5. h. leg 10 2ý " 22 24 6. c. leg 30 26 8 - 103 Dieses Blatt unterliegt den WeitergabebeschrAnkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25. 5.98 6:43: 6 SDOKU.980513.1842.14668 z Q C • Temperature (K) ........................ 60o.................. ..................................................... . . . . . . . . . . . . . . . . ........................... .......................................... .......................................... ................... .......................... ............................. -............. 55D 0 ;0 ..• 5 5 . .............. .............. ............................. .......................-. ..... .... ....... ..... .................. ............................. .. ............. .... ............. ............................................. ............................ ..................... ...................... ......... 5 0 . ............................... ................. ........................... •............................ ...... ................. .............................. ........................... .................. ........ ..... * ................ ..... .............. .. ........................ 45 - 60 z U ...... .... i. ... .. ........ ..... .......... ............ m 4 0 -......... .................. ......... .................... 40 - ....................... ............ ............... .. 35.... . .... ..... ........... . . . .. :. .. ............. ........ . ........ ..-.... ....... ..... .. ....... ...... ..... ... ........... .. o ........ .. 30-........................... ........................... ........................... ......................... ......... .... ...... ... ..... ............ ...... ...... ........................... ........................... ...................... .. ... ..... ........ .. ................... ... ........... .................................. ............. 25 .. . .. . .. ... . .. . ... .. . ... . .. . .. ... . .. . ... . ........ ............. ............ -•... .... ... ... .... ... ...................... , .. 20 ............ ............................. ..................... 5 0 .............................. ................... ....................... .. ..... ... ..........;.............. ...................................................... ........................... '" .............................................. ' 2 4 6 8 10 12 141 Time (p) Depress. dp N Injection .... .... .. 1. h. leg 10 2. c. leg 30 - 3. h. leg 20 16 18 -- p 4. c. leg 40 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4,7: Temperature Diff. Primary-S. - Secondary-S. R(X), Exp.(+) 2ý 22 24 28 26 NoI, dp 5. h. leg 10 dp 6. c. leg 30 "103 Dieses Blatt unterliegt den Weitergabebeschrtlnkungen wie auf Titelseite bzw. erster Seite angegeben z:D This document Is subject to the restrictions set forth on the first or title page 25.5.98 8:40:29 "Q-rCD DOKU.980513.1842.14668 O _0 Temperature (C) Q. 0D JJO ) (-)<TEMPG32001 Co 1 9 5 . .......................... ........................... .• ................ ........... ................ ........... i. ...................... .......................... ............................ i.............. ............. • ............. , ...................... ........................... Z....• . Sz_ A T-T EMP 7 40 01i 190 ... ...... .... ..........T.. .. .... f,. J ....... .... ... .... ... ... ... ................ ....... ... . J -. .................... 1 90 ................. C'_ .. C: z ""YY SATTEMP20001 .. .. . .. .. ... ... .............. ... ... ... .... ........ ... ..... CD 0O .......... Y....... ... ..... i... ................................... ..................... .......................... .............. • ...............,............ ............... ...................... ............ .......... ................ ............ . ............. ........ ...... .... ..........". 18................. 0 '. .................... ............ .............. .................... ....................... . .. .................... . ..... ...... .......... ............................... ................................ 180 -.................... ...;............... m 0 180~~ ~ 17 ~ ~ ~ ~ "."-: ~ ~ ~...................... ... ................ ;4 ":.......... . . , ,.' , : -- -.- " ,' ' ................................. .................... ...................... i..... .... .• 1.. 6 ...... ................ 155......... ....... ,.. ' """ "•• ' ................. ........, •.•............. ....................i ,•N i; ................... OP! • ........... ... ....... .......... -. ., ........... ........ i. ....................... ...-.. z .....-..... --.......... •.•..-..... • ....-.. ..... • ............... ..... • ...................... . ..•. . ................. . ......... ............ ........... ............... ... ..................... 16 ........................... 160-. 170 ................... ............................................ ......... ...... ........... ......... .. ......... 7-. , ................... 165......................... ........ 77. .......-...... ............................ ....... CA) 155 150- cx3 . , ....... I . 2 I' 4 , ' I ' , I I 8 10 , , ' •r ' , ' • I I 12 Time ('s) 16 18 Depress. dp N Injection ' ' Th 2? ' I 22 24 dp 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.8: SG 10 Asc. U-Tubes R(X), Exp.(+), Satt-sec(Z), Satt-pr(Y) 5. h. leg 10 *103 26 dp 6. c. lec 30 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben Uo z This document is subject to the restrictions set forth on the first or title page 25.5.98 8:40:30 DOKU.980513.1842.14668 (C) -............................................................. ............ 2 00 . ........ I Temperature (0 .......... CL CD, C 0 ..... . ....... .................. ................... .................. 19 5 . ................................. CD CL 1Ia z U') c 00 zM, .............. .. ...................... I................................ ." . ............................. 185 -tA 180 175 170 165 160 -0 155 SD CO, cr0 150 Depress. dp N Injection 12 Time s) 14ts 3. h. leg 20 4. c. leg 40 0 16 18 "*103 2T? dp 1. h. leg 10 2. c. leg 30 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.9: SG 10 Desc. U-Tubes R(X), Exp.(+), Satt-sec(Z), Satt-pr(Y) 5. h. lea 10 5. h, lea 10 dp 6 r Inn .10 Dieses Blatt unterllegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25. 5.98 8:40:25 DOKU.980513.1842.14668 a: w CD 0.. 0 z 20o0....... ............ ...... .:......... ....... .......... ........................... Temperature (C) 0z S....... ..................... i ........................... T..... ....... ... X---+ i-t-- CD, TEMPG42001 C Z -Z .. .. . .. ............................. ............................ ........................... ............... ................................... . . .. .. . .......................... ................S. .............. ................... 19 5 ............................ SATTEMP74001 Y SATTEMP20001 Y {0. Co ÷.................. .......................... ........................... 19 0 . ........................... ....... . . ...... 18 5 . ...... 0) m A ...,, " ........ .................... , ...•... ..: --.,.............. .. • , ...... /. •...... .. ....... ............. ... •....... ...... .... :.' .. .. I................1.F~ 1- - ................... ............ A -- z-- -- z- - - -Z ........ .... ... ........................... .. . . .. . .. . ... . .. . .. . ... . . .. . . ............................ ........................... 17 0 . ........................... ............... ............... .............. .. . . . . . ...... • ........................ . ......... . . .1....... - .. . . . . . . ...... .............. ............. . .............. t . I.......... .. ............................ ---- '.i i' " " -i . . . .. .. . . ....... --... .. .... --".-.... .. ..... ... .. ...... ---..'.. ... ... ...... ...'.. ..... ..... ..... .... ...... . ........................... ............................ 16 5 . ........................... .. .... .. ... ... .............. .......... I... III IIIi .. .. . .. ... .. ..... .. .... .... .... .. I ..... ..... "............... #.. .. ...... ... .................. ...... ........................... ....... 16 0 . ................... 1 50........... 56 . ............. ',- . ............................ - I.. 'z4' . ... .. .. Z ' I ' . I ' CD "4t. ! o I 150I I 0 2 4 6 8 10 16 12 18 Timet) Depress. dp N Iniection 1. h. lea 10 z 2. c. lea 30 3. h. lea 20 4. c. lea 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.10: SG 20 Asc. U-Tubes R(X), Exp.(+), Satt-sec(Z), Satt-pr(Y) 2T 22 24 dp 5. h. lea 10 26 1 28 dp 6. c. leg 30 "*103 Dieses Blatt unterliegt den Weitergabebeschr~tnkungen wie auf Titelseite bzw. erster Seite angegeben C') 0 This document is subject to the restrictions set forth on the first or title page 25. 5.98 8:40:26 DOKU.980513.1842.14668 0 5.Q Temperature (C) 200 S. .............. ........... z (0 .......... .... 195. .............. ........... XXTEMPG42018 " CD ZZ SATTEMP74001 Y Y SATTEMP20001 C,. C: zCO 0, S............ .............. ......................... ............................ .................. ......... 19 0 . ........................................... m ...... 18 5 - ........... 01 18 0 . ......................... ................ Z Z 175.-' 170 .................... 17 0 . ...................... 165 . ............................................ 160. ........... 155 . ........................... 150-. 0 . o0 I 2 4 6 8 10 12 Depress. dp N Injection 14 Time ýs) 16 18 0 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.11: SG 20 Desc. U-Tubes R(X), Exp.(+), Satt-sec(Z), Satt-pr(Y) 2 dp 5. h. leg 10 22 26 128 24 _o 6. c. leg 30 dp "*103 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben U) 0 z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:11 (D DOKU.980513.1842.14668 0 ;il. 0 Mass (kg) 0n ; n ............................................... 0.45 Co ............. ........... CD S.......................... S................. ,............. .............. ÷ ........................... . . . . 0.40 0 CD OD CL z ......... ... ..... . ... ... .................. ... ................. ... ... 1,0 (0 S............................ ........................... ,............. . 0.35- z ........................................................ . . .. .......... .. ..... . .. .. ..... ... ...... ........................... ........................ . . ....................... . .. .... ... ...... .................. ... ... ........J. ............................... ...... .. .. .. ... .... .. .. ....... .. ................ ....... . m I', 0 ...... ............. . .. .... .......... ....... ..... 0.20 . ... ... .... .. .... ... ... ... .. . ... ... ... ... ... ... .... ... . .. ....i. .. ................... .... 0.15 i 0.10. ............. ........... .. ........ .......... . . ................ ...................... ...................... ................... ............... ....................... CD I\) RELAP 0.00 6 8 10 12 Times Depress. dp N Iniection I 141 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.12: Nitrogen Mass Loop 10 Hot Leg + SG Inlet dap 4. c. leg 40 16 18 Do 5Sh.ieg 10 24 dp 26 28 dp 6. c. leg 30 *103 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:28 D DOKU.980513.1842.14668 Mass (kg) 1.0 .............. JJ X CD -C3 0 0.. CD 0.8. .. ................... .... 0 .8 . ................. C CL z COr m 0 0.6. 0.4. 0.2 Co 5D 4h. 0.0- r 0 i 2 16 18 Depress. dp N Injection *103 2b dp 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.13: Nitrogen Mass Loop 10 SG U-Tubes 4. c. leg 40 5. h. leg 10 dp 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:28 CD DOKU.980513.1842.14668 CL z 0 z ......................... ........................... ........................... ............................... 0 ........... .............. ..... ........ ..... ..... ... .. M. CD 0L U) cim 00 ......................... .......... ................ ............................ .... ............. ........ m -U (03 .C. 11',I Depress. dp N Injection ,11 Time (p) -- 4. c. leg 40 5. h. leg 10 dap 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.14: N Mass SG 10 Outlet to half Loop Seal ,'18 21 *103 dlp dp 6. c. leq 30 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25. 5.98 7:18:28 DOKU.98051 3.1842.14668 Z Q~0 t CD0 Z C0 m 0 4-U CD 01 6 8 10 12 Depress. dp N Injection 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL Ill B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.15: N Mass Loop 10 half Loop Seal to RPV Inlet 141 Time_,S) I_ 4. c. leg 40 *103 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben U) 0 z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:47:58 (D DOKU.98051 3.1842.14668 _0 9') Mass (kg) S............................ ............................. ............................ ............................. ............................. ...... ...................... ................................ ......................... .] ...................... .............................. .. ................. ........................... !...... . .... .... 0~ Co X--X CNTRLVAR8001 / 2 . ....................... - -- -F---+ CD CNTRLVAR8003 CL 2 .0 . ........................ S........................... ........................... ............................ ....... .... .... ............ O WJ O . z K,) (0 .. .... ................... .......................... ............................... .....i................ ..... .................. ........... ..Z .......MLOJ1 .. //./ ..................................................... 1.5 0 C/) 0 1.0 0.5 + ........................ ............... ...... . 0.0 -- -------- - - -- J.. . ... .. .......... .. ... .. ... .. .I. .. ... ............. ... .. ... .... .. ........... . .. ... ................. ............... ... ...... .. .......... ...................... ............ + . -...... ... -: -0.5 ............................ I.. ............................ .............. • = = ..' , . ... ....... .... ... .... ...... ................................ ..... .......... ........... ........................... ................... +.•~~.............. ................... -I- ± ................... ................... ........ ,....P.alc.at .. .............. o.......... n. ............. -1 .0 .T-" -I I U I -V r --- - e- 0 1+ IU I18 1/ 2yi 22 24 26 ! 28 TimedS) Depress. dp N Iniection CD 0) 0, . .. .-, - 1. h. tea 10 dp 2. c. leo 30 3. h. lea 20 4. Ien4fl Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.16: Int. N Injection L. 10 Hot Leg(Z), SG-Side(X), RPV-Side(+) I, Ion IA dp *103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben i) 0 25.5.98 7:48:44 (D _0 DOKU.98051 3.1842.14668 (0 Mass (kg) 0.09-1 A .......... (D CD 0.08 z o9. CL .... ............................ ........................... ............................ .................. C z (0 0.07 .................... ........................... ........................... 0.06 .... . ... .... .. ... ... 0.05 . ... . . ... ... ... ... ... ... .... ... . ........................... ....................... ............ OD m N) 0• .................. ........................... ....................... 0.04 0.03 0.02 "-4 0.01 CD 4T- 0.00 6 8 10 __ Depress. dp N Iniection 12 __ 14 *103 ) _ Times) dp 2dp 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.17: N Mass SG 10, Pipe 320 Ascending(X), Descending(+) U-Tubes 5. h. leg 10 dp 6. c. lel 30 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:48:56 DOKU.980513.1842.14668 CL CD 0 13 ................................................................................. S........... I..................... . . ........Z............................ ................................. ............................. , ....................... CD X-X CNTRLVAR8010 4---+ CNTRLVAR8016 (0 CD S........ •........................... i.......................... CL z 0 Cn C') .... .............. m 0 ............................ ..... i ............ .. ...... "" ?.................. ......................... i............................. ......... .................. ............................ ............... ............ [... ..................... ..... . - .÷... ... ......... 0.05 ..,,,............. 0.00 .......................... ........................... C V. ......................... ........................... RILkAP Calculation -C 0)2 CoB ! C° 2 4 6 8 12 10 1'6 ' 1'8 ' '2 Tim24ceg) Depress. dp N Injection - T1e s 22 I .2 14- I 2 16 1 '2 dp 1. h. leQ v 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.18: Integr. N Mass Flow SG 10, Pipe 320 Inlet(X), Outlet(+) 5. h. leg 10 dp 6. c. lea 30 *103 Dieses Blatt unterliegt den Weitergabebeschrinkungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:29 n DOKU.980513.1842.14668 ,C CL Mass 0.5(kg) 0. ................ ................. ........ ( ....................... ................ ............................ .......... ............. ..................................................................................................................................................... 0.45........................ ..... ...................... ............................. ........................... .................... ............................ ........................ ............ ......... ....... ..... ..................... .................... 0 Z . CD 0.50 CO 0.35 ................................................................................................................. 0.30. 0. ......... ..... ...... .. ..... ...... ..... .......... ........ ... ..... ........ ........ .. "...... . CC) . ..... ........ ............. ... ..... ........ ........ ..... ... .......... ........ ..... ................ ..... .........i .. ........ ........ ........ ..... ...... .. .. . ..... ..... ...... .......... ........ ..... . .. ... .. ........ ..... .............. ....... . . ......... 0.25 -. . ............... : 0.2 0 ............................................................... ......................................................... ........................... 0 .10 . .............. ....... ...................... . ............... ................... ....................... ............................ .. ............... -........... ......................... ........................... ...................... ........ •................... ............ ............. ...... ................. ............. e 0.15K 0 0................ ............. .... .............................. ........................... .......... .... .................. .. ........................ ...... ..... ...... ...... . 0.05 • •• 0 2 S i i 4 6 , RiELAP 8 i, 10 Depress. dp N Injection • 2. c. leg 30 12 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.19: Nitrogen Mass Loop 20 Hot Leg + SG Inlet , 141 Time () d 4. c. leg 40 16 18 2ý Idp dp 5. h. leg 10 ( ............. •.......................•..... ................... .;................ ........... Experimnent: no N'Acoumulation 1. h. leg 10 •• •4 22 24 26 J 28 dp 6. c. leg 30 "103 e This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschr-nkungen wie auf Titelseite bzw. erster Seite angegeben z 25.5.98 7:18:29 "Z3CD DOKU.98051 3.1842.14668 5.. 0 Co Mass (kg) .................. ........... ................ .......... CD z 0 CL C 0.8 OD z ... .. ........................... { . .................... ... ........ ................... . 4o m 0 4:. 0.6 ............ ..................... ...................................................... ... .. ........ .. 0.4 0.2 . ............ ................................................ ... .. ... .... ... ... ... ... .. ... .... .. .... .... .... .. .... .f.. .. ... ... .... .. . . ............ "-u Co 0'1 0 0. 2 4 6 8 10 S' I ' 12 'I 141 Timeis) '' 16 ' - 18 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.20: Nitrogen Mass Loop 20 SG U-Tubes 4. c. leg 40 ' I "*103 D dp) Depress. dp N Injection ' dp dp 5. h. leg 10 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschrinkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:29 -r z 3ý DOKU.980513.1842.14668 ".0- 0 0 (a Z Mass0 .5 (kg) 0 .............. ........... :........................... .......................... ....... ...................... .............................................................. .................................................................................................................... .................... CD (D z 0.453 0 .4 0 . .......................... ................................... . ... ..... ...................................... ...................................................................................... ................".............................................................. .................... O0 0 .35 - .............. .. ....... .... ............... I .............. ........................... .............................. ............................ ...................... ........................... ........................... ........................... ........................... .......................... . i . ....... ........ .................................. 0 .30 . ........................ ... ...... .. .... •....... ................ ............... .. ..... .......... ................. ..... .. .......... 0.25 ......... . .. . .. .. . .. . .... ..... ... ..... . ...... . ... .. . .... .... .. .. ......................... .. ..... ... .. ... ..... . .. . ... ... ..... . ......... . ... . .. ..... .. .. .. ... . .... ................................ . . .. ... . . .. ... . . 0 .20 . ....................... ............................ :............................. . .. ................ ............................... ........................... ........................ ........... ............... ........................... .. .. .... 0.35 . . 0. 1 . ..... .. ................................. .. ... .. .. . ....................... ... ... .. .. .. .. .... ... mii . ...................... .............................. ........ .... .. .... .... .. ... . .. m i" C, 0.00 0 . 0 .... .... ........ . ..... .. .. ... ..... ... I....... ..... ... .......................... T..................... ................... .... I................. ... ....................... ... .. .... ..... ...... i 0 ! / 1• i i Exper rhent "1 0.0 .................................................................... .............. ............... .......................... 2 4 6 8 10 12 Depress. dp N Injection . . ........................... ........................... ............................ ....................................................... 14/ Tie 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.21: N Mass SG 20 Outlet to half Loop Sea[ 16 18 p• 4. c. leg 40 2ý 22 24 dp 5. h. leg 10 26 28 dlp 6. c. leg 30 *103 Dieses Blatt unterliegt den WeitergabebeschrAnkungen wie auf Titelseite bzw. erster Seite angegeben Dz This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:30 Cl) DOKU.980513.1842.14668 a: D a M CD "0 • zP.. =' Mass 0 .5(kg) 0 . ............................ ........................... ............................ ............................................... ............. ............................ ............................................ .............................. .................................... ........... .............. ............. .... .................................... .................... ................................................. ....................... ................................................... ....................... ........................................................................................ ...... 0.45. ............ C CL 0.45 OD .... ......................... .............. ........................................ .. ....... ................. .............. .............. ......... ............................ ............................. ......÷.... ............. ... "........................... :.............. 0 .30 . .......................... 0 .2 5 . .................. ...... ... ................ ............................ ..•........................... ................... .............. ........................................... ......................................... .................. ...... ................................................................................. ........................... ......................... ..... ........ .......... .................. .............. .............. i.... .......... ... ....... .... ................... ......... .............................. ............................. 0.2 ................... ....... ......... .............. 2"103 0.10 N 0.2543- Loop .2 RLP/Md. N~~~~~~~~ 2. 0 c. .c ... ~~~. ,h l@1 e 4 ........................... .necio ......... . ... l 3 .eg .. .e.03.h.. Experiment 0.00. .X Ders~p 0 )I 2 4 6 8 10 1'2 .T.m. 16 1 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL IIl B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.22: N Mass Loop 20 half Loop Seal to RPV Inlet 4. c. leg 40 212 214 dp d N Injection 21 5. h. leg 10 216 28 dp 6. c. leg 30 *103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrt.nkungen wie auf Titelseite bzw. erster Seite angegeben 0) 0 z 7:47:58 25. 5.98 CL "(0 DQKU.98051 3.1842.14668 (I,. (D Mass (kg) 1.0 :3. X-X CNTRLVAR8022 : . .: ----+ CNTRLVAR8024 ZZ- Z MFLOWJ20 . 0 CL 0C: z 0.8 (D m 0a o .. ..... .. .. .. S.... ...................... .............................. 0.6 ........................... .......... ................ .T....... ...... .......... ........................ .•...... . ......... . ..... ....... . ............. ...... .. . .......... ++ . ............. ........ ..... .... ...... .... ....... ...... ............. .......... 0.4 ...................... ......... ' .............. ......... ........................... ............................. i............... ........ .. ............................ . .................i. ............... ........................... .. 0.2 ................. .. .. ,..........f.. ....... . ......................... ........................... 0.0-, P Co..........n.................i............................ i...... ............... ........................... "-0 RIELAP Calc~lation 0 2 4 6 8 10 12 Depress. dp N Injection 1. h. leg 10 2. c. leg 30 3. h. leg 20 141 Tim s 4. c. leg 40 Comparison of Experiment und Analysis PKIL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.23: Int. N2 Injection L. 20 Hot Leg(Z), SG-Side(X), RPV-Side(+) I ' 16 I 18 , ' 1 ' 22 24 dp 5. h. leq 10 i S26 I dp 6. c. leg 30 28 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:49:19 a) C-) 0 z DOKU.98051 3.1842.14668 C1 9.. CD -a 0 z Mass (kg) 0.09-. Co CD •. . ...................... ............. . . . ............... .. ............... •..... CD 0- z Zý CD 0 "(0 CD (3' i • I'i 6 --' 8I' i ' ri' 10 ' I12 ' Depress. dp N Iniection SV I ' 14|' i Time •s) - 1. h. lea 10 2. c. leg 30 3. h. leg 20 16I ' -- i 18 , _ 4. c. leg 40 Comparison of Experiment und Analysis PKL IIl B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.24: N Mass SG 20, Pipe 420 Ascending(X), Descending(+) U-Tubes *103 It dp 5. h. leg 10 dp 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben 0 Z This document Is subject to the restrictions set forth on the first or title page 25. 5.98 7:49:19 CD M 10 DOKU.980513. 1842.146 CL )..... ..... Mass (kg .. 0.15 0 CD 0-3. ........... . . . . . . . . . .... .. 0.10 . .... ... i - - -.. ...., -..... ............ CD CL C z mf) 0, 0.05 oOD Oo . ......... -.... .... ,• .... . ... S. ..................... . . ......................... ..................... .. . ..... . . . .. .. . .. . ... €.......... ....... ......... . .. . . .. , .. ..... .. .... .,4 0.00 , .. ,... ....'. -. .. '.. ................ ...................... . . . . . Nm . ... .................... .................. ...... ....... ............... t ... ý& ... ...... .... ..... . -0.05 .. S........................... • . ... ................ . . ............. ......... ............ .......... •lk"' ' -0.10 -0.15 S........... ............... "........................... . .................... ............................... ............................ ........................... f" ................................................... ...".......... ............... ................................................... ....... ! .............. .................... .. .................... .................... ..................... .................... -0.20 .................... .................... ............ .. ......................... ..... m PtLAP Ca6cu61t0o i -0.25 ,mlE °, 01 01 -0.30 0 2 SI 4 ' . I I 6 ' I' 8 I 10 12 Tim Depress. dp N Injection 16 1. h. leq 10 2. c. leg 30 3. h. leg 20 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.25: Integr. N Mass Flow SG 20, Pipe 420 Inlet(X), Outlet(+) I ' 18 dp 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 ' 2T 22 24 1 28 dp dp 5. h. leg 10 26 6. c. leg 30 "*103 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:30 M CD DOKU.980513.1842.14668 0) -0 0 Mass 0 .5(kg) 0 .......................................................... ..... ..................................................... .......... ................... ............................. ....................................................-....................... ........................................ ........... .................................................... 0~ CD .......................................... ... .......... ....... ............... ............ ...................................................................................................................... 0 .4 5 . ........................... ............................. ......................... z 0- .' 0.40 0.3 . .......................... . ........................... ........................... ............................ ................... . .. .i. . ... . . ............. : .................. .. 0. 4 .. ........... ........... .. ... . .................... •..... . .. . .. .. . ..•.. . .. .. . .. . .. .[.. . .. . .. . .. . .. 0 .. i.. ......................... ........... ......... ....................... .... ........ ........ ............. ... .............................. ......................•....................................... .......... ................ .... ..... ..................................... ......................... 0.30. ................. 0 .2 0 . ........................... ........................... ........................... ......................... ......... ...................... 0 .150.30, ........... ... "........... .... ! ............................... .......... ..... ............... ..... ..........,....... ............. ......... ...................... ....... ......... .................................... .................... c.......x.... '; •>, .... ............................... ...................... ......................................... ' q ..................................... '" .................-.-...... ................... ....................................................... .................. 0.25i..................... ' ................. • ......... ' I ............ 0.10o ............. .......... ....................... ..... ..... ... .............. ............................. .............. ............. ............. ............ ......................... ....... ...............................................'..... .. ....... ....... .. ... ... . .. ... .... ..... . .. ....... (D i 0.00 0 2 4 ! 6 RELAP 8 ii 10 ! 12 Depress. dp N Injection 141 16 Time (s)NO 18 dp 1. h. leq 10 2. c. leq 30 3. h. leQ 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.26: Nitrogen Mass Loop 30 Hot Leg + SG Inlet 4. c. leg 40 CA 0) Experlmdint: no N Abcumulatioih 2ý 22 24 dp 5. h. leg 10 26 i28 dp 6. c. leg 30 *103 Dieses Blatt unterliegt den Weitergabebeschrdnkungen wie auf Titelseite bzw. erster Seite angegeben £/ Z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:30 DOKU.980513.1842.14668 0.. Mass (kg) 1.0. CD -0 CL 0 CD CL z 0 CO 0.8 m 04M ................ 0 .6 . .......................... 0.4. 0.2. "13i 4o "4D 0.0 0 14: 2 Time (ds) Depress. dp N Iniection 1. h. lea 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.27: N Mass Loop 30 SG U-Tubes 4. c. leg 40 16 18 0 5. h. leg 10 *103 2T . dp 6. c. leq 30 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschr•nkungen wie auf Titelseite bzw. erster Seite angegeben U) 0 z 25.5.98 7:18:30 DOKU.980513.1842.14668 53. '0 0 Mass (kg) 0~ Co (D CL) i i ........................... i ............................ ......................... ................................................. ...... i............................z z C/) 0.40 (0 ............. ... ....... .................... ............. .................... m 0.35 0 .30 0. ............................................ 0 .25 ............... .. 0 .20 .............. ................. 0 .15 . ................... 0 .1 0 . .......................... -U SD 0.05 .......... 00i 0.00 : 0 2 Seal Loop to half III B 4.3 1. h. leg 10 Injection und Analysis PKL 30 Outlet Experiment of SG RELAP5/Mod3.2 Comparison -- of Experiment und Analysis PKL III B 4.3 Comparison Data b43N Mass 4.28: Data Fig. b4_3 -- RELAP5/Mod3.2 Fig. 4.28: N Mass SG 30 Outlet to half Loop Seal Depress. dp N , *103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben ci) in z 25.5.98 7:18:31 DOKU.98051 3.1842.14668 CL 53. "71 Mass (kg) 0.50 ........................... .... ......... ............ 1- ---.................... ................... I--......................... ....................... -- ........................... S........................... i CD) C 0.45 ........................... ........................... ........ ... . ..... . C. S..................... . . .i 0.40 ....................... ......... . ............................ z m S.. . ........................... ...............i. . . .. . .. .. . .. ............................ ............................ ........................... i"............................ ......................... . ................. S........... {.................... ....... 0.35 z ........................... ........................... ........................... S........................... ................. .................................. ................ ................. ......................................................... .. ............. ........................... 0.30 S......................... .I ............ ................................ ............................ ........................... ............................ ,............... ........... ................. . ........................... ........................... ,......... S........... .................... ....... 0.25 0.20 ............................ ............................ ........................... ........................... ............ ................ ........................... ........................... ........................... .................. ............................. ....................... 0.15 ........................... ............. .................. ........ S........................... ........... ............ ............................ - - ........................ ...... ..................... .................................... ..................... ........................... ................. LAP 0.10 ........................... ..................... 0.05 ................. ...................... ..... ......... 0.00 0 2 4 6 8 QOýMWW* 12 10 .141 , I 16 Time(s) Depress. dp N Injection 18 16141AK'~hM __p 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKIL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.29: N Mass Loop 30 half Loop Seal to RPV Inlet 4. c. leg 40 ,118 21 W dp 5. h. leg 10 2;2 L 24 26 I dp 6. c. leg 30 •103 CD 0Q CD (0 01 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:47:59 "I" DOKU.98051 3.1842.14668 0 z (D _0 0 5. i . .............................. ........ 0 ............ ....... ............................ )(-X CNTRLVAR8042 4---+ CNTRLVAR8044 Z-Z MFLOWJ30 ij............................i ............................ ii........................ ......... .............. .i (D C. Z3. a CD 0. z C ............................ ........................... ............................ i........................... i...................... S............. m. m\ '/' .. ... ..... .. ..... .. ................... 0o / i.......... ................. ........................... .. ....... ... .. .. ... .. .. .. ....... ..... ...... . ... ................... .. St! RtLAP Calculation .. . . . . . . .. 00, 26 Depress. dp N Iniection 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data M4_3 -- RELAP5/Mod3.2 Fig. 4.30: Int. N Injection L. 30 Cold Leg(Z), RPV-Side(X), SG-Side(±) 5. h. leg 10 6. c. leg 30 1 28 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unteerliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben z 25.5.98 7:18:31 "l-I CD -0 0 DOKU.980513..1842.14668 CL z Mass (kg) 0.50 S....... ............................. ...................-....... • ............ ............. 1 ...................... .................... 1.......................... ........................... r ............................ ....................... CD .............. . ...........I -I 0. 0.45 0.40 ............................ .... ........ ............................ .... ... i........... ..................... .......... ... .... i...... ............................ ........................... .° z CC 0 !; MO S........................... 0.35 0.30 0.25 0.20 ........................... i...................... ........................... ........... ............... ........................... S........................... ................... ....................... ....................... i.................. ....................... ........................................ ........................... i ...... ............. ........................... 1. ........................... ........................... i ......................... " ........................... 1......................................... ........................... . ............................. .... ... .............. ............. ... .. ........................ i.. ........... ..... ............................. ... i ......................... ........ ..................... ...... ... "................. ...... ............. ........................... ..... ...... ................................ ............. .................. 0.15 ........................... •............................ .............................. .......................... ........................... ........................... ........................... S.......................... 0.10 ........ ...... .. ... i.............. ...... .......... . . .. . ............... .. . .. . .. . .. • . .. . ......................................................... S. ........ .. . . ... 0.05 ...................... -C RELAP 0.00- I 0 2 4 6 8 10 1. h. leg 10 16 12 - I I 18 Time_•s) Depress. dp N Injection .. .. .. .. .... l. ... ...... .. .. .. ... .. ... .. .... .... ........ . .. ..... .. .. 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.31: Nitrogen Mass Loop 40 Hot Leg + SG Inlet 4. c. leg 40 XI I 1 2? 1 I 22 ' 1 ' I 24 ' 1 J 26 -T'I 1 28 dp dp 5. h. lea 10 , 6. c. leq 30 "*103 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:32 "I DOKU.98051 3.1842.14668 :1) CD '0 (D ............ 0 CD .... . . ..... ............ .. .............. .. . .. . . ...... ... z.. . . C CL z (', 0.8. .. (0 m o' 0 .. . . . . . . . . . . . . ....................... 1 .. ............. .. . .. . . .. . .. ....... .......... .. .. ..... .... 0.4 .. .... .... ........ ..... ............. .. ..... .. 0.2 -u CD CF) 0.0 6 N Injection "*103 Time js) Depress. dp 4 dp 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.32: Nitrogen Mass Loop 40 SG U-Tubes dp S hr Ig~n 10 4 c Ian 40 5 h le 10 dp Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:18:32 "-rJ U) z 2) •. DOKU.980513.1842.14668 CD 0 0D . Mass (kg) 0. 5 0Q C 0 CA) (D z m "0 CA) 0 12 Depress. dp N Injection 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL Ill B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.33: N Mass SG 40 Outlet to half Loop Seal 2'8 141 Tim es) 4. c. leg 40 dp dp 5. h. leg 10 6. c. leg 30 -103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben 25.5.98 7:18:32 "I "DO (z Z DOKU.980513.1842.14668 0 9. 0~ i z(,D 0 ............... .. .. .. .. . . ..... ... .. . ........... - ........................... . .. .. ....... . .. . . . . .. . . .............. ....................... C• Cl) .. ............................................. ... . .. .. . .. . .. .. . .. . . .. .. . .. .. .......................... .. ..... . ... . .. .. . ... ........ OD ............ .......... m .............. 0o ... .. ................................. i............................ . ............................................. ........... ..... ....... .... ............... i .......... ~~ ~. .......... ......... .......... ................ ............. ~~~~ . . ... ..... . . ...... .. .. ... .. .. ..... ...... . . . . .. . i .. ............... ............... .......... ....................................... ........................ . i. . .. . . . . ............. ....................... .......... ......................... -D Co (I, ..................................... 0) 0 2 4 6 8 10 12 Time Depress. dp N Injection 22 14| dp 1dp 1.h.iegl10 2.c.Ileg 30 3. h.leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.34: N Mass Loop 40 half Loop Seal to RPV Inlet 4. c. leg 40 24 5. h. leg 10 26 28 dp 6. c. lea 30 -103 Dieses Blatt unterliegt den Weitergabebeschrcnkungen wie auf Titelselte bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:47:59 a z ,-a DOKU.98051 3.1842.14668 Mass (kg) 0.35 -. ... ....................................... ............................ ......................................................... . ...... ............. ! ......................... X-. < CNTRLVAR8064 -- + + CNTRLVAR8066 Z................. Z Z M F LO WJ 4 0 - - -.................. ....................... ........................... ......... CD (D~ C. CD a C: Z 00 0 C,i, ...... .. . .... .. . . ....... .. :... ............. . ...... .. M N . m 0 "(D 0) 01 24 6 8 1 ,0 1'2 I 16 I ' I ' 18 Time Depress. dp N Iniection 1 '4 2. c. lea30 3. h.Ileq20 4. c. lea 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.35: Int. N Injection L. 40 Cold Leg(Z), RPV-Side(X), SG-Side(+) ' I *103 2? dp 1dp 1.h. lec 10 I 5. h. lea 10 dp 6. c. lea 30 Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben This document Is subject to the restrictions set forth on the first or title page 25.5.98 7:18:57 DO CD DOKU.980513.1842.14668 Mass (kg) 1.0-, ........... ..................... ..................... .......... ................. ....................... .......... 0. 0 3. 0 0 ............................ Co_ CD Q. 0.8 C: z (0 m 00 M 0.6 0.4 0.2 "Cl 0) 0.0-: *103 Depress. dp N Injection 1. h. leg 10 2. c. leq 30 3. h. leq 20 4. c. lea 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.36: N Mass Closure Head and UPL(X), DC(+), LPL Core and Byp.(Z) 5. h. lea 10 6. c. lea 30 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben 25.5.98 7:19:1 T z) 0 z :3. DOKU.980513. 1842.14668 X (D CL Mass (kg) 6.0 CD 09 a" C CL z (n) 5.5 5.0 4.5 4.0 3.5 3.0 .......... . .. . .. .. . . .... . ............. S.......................... 4• ..... ....................... ... ....................... ................ i ......................... ..... .............i ..................... 0 ........... •-.......... .............................. "/........................i ................................. S.......................... ,..................................................... ...................... ,•.............................. ........................... .............. ................ ............. ................,•........... ............. •,................... ........................... .. ....... ............... .......... "".. ... ............................. .............................. ... . ................. .................. . . . .. . . .. .. . . . . . . . . .... ...... .... 2.5 2.0 1.5 ........................... ...... ...................... ........................... ............................ !..................... t............ ............................. ...... ..................... -u 1.0 51) (0 CD 0) -4 0.5 0.01- 0 2 4 6 8 10 12 ' '4 1 Time [ 16 18 ) 1. h. leq 10 2. c. leg 30 3. h. leg 20 4. c. leo 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.37: N Mass Primary System RELAP(X), Injected N Mass(+) 22 24 5. h. leg 10 *103 26' dp dp Depress. dp N Injection 2? 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschrinkungen wie auf Titelseite bzw. erster Seite angegeben z This document is subject to the restrictions set forth on the first or title page 25.5.98 6:55: 4 DOKU.980513.1842.14668 CL Power (kW) (D 0 0 (03 3 0 0 . .................... ................ CD .................. 2 8 0 . ................ CL 260 ....... C z C', (0 2 4 0 . ...................... U) 2 2 0 . ............................................ M m .................. 200 .. .................... .............. 18o -...... ....... . ...,' .............. 160 -. 140 180 160-> 20 60t (C0 OD ...... 20 . ...... 0 0 2 8 10 1'2 'm14: 1''16 -- 18 2T . 22 24 2s) 26 2 *103 __________Time0 Depress. dp N Injection 6 -dp 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/M0d3.2 Fig. 4.38: Heat Transfer Experiment SGs 10(X), 20(+), 30(Z), 40(Y) dp 5. h. leg 10 dp 6. c. leg 30 This document is subject to the restrictions Dieses Blatt unterliegt den Weitergabebeschrnkungen wie auf Titelseite bzw. erster Seite angegeben 0) 0 z D set forth on the first or title page 25. 5.98 6:43: 7 CL DOKU.980513.1842.14668 Power (kW) M o 0 0 (0 z Ma 3 00 .1......................... :.......... M- 2 8 0 - ............................. z 260-1 .................... 240 -1.. Nl) (0 m 4\) ... . .. .................... i..... ....................... ." ................ . ........... i....................... . .. ........................ ;............ ...-. ............................ , .............. ............ i............................ ..... .. ................................. .... .. .,. ... ........ ... ..... ....................... ............................................................... ................... ................ ... .... ... ... .... ... ... ....... 0 2 4 6 S... ........ 8 10 .T' ' -, 12 14 16 18 Time ý,s) Depress. dp N Iniection . . ............................ !. . . . ........... . . .. .. . ........... . ........................... ............................ ....................... •' ........................... 1. h. leq 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 Comparison of Experiment and Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.39: Heat Transfer RELAP (smoothed) SG 1O(X), 20(+), 30(Z), 40(Y) 2ý -214 dp dp 5. h. leg 10 216.128 6. c. leg 30 Co *103 Dieses Blatt unterliegt den Weitergabebeschrainkungen wie auf Titelseite bzw. erster Seite angegeben zD z This document is subject to the restrictions set forth on the first or title page 25.5.98 6:55: 5 a] "CL-a CD DOKU.980513.1842.14668 0 z 0 (p CL C Z (0t m 0 "-.4 0 J 2 4 6 8 10 12 Depress. dp N Injection 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/M0d3.2 Fig. 4.40: Heat Transfer SG 10 Experiment(X), RELAP(+) 14ý Tim (s 4. c. leg 40 16 18 )_ 5. h. leq 10 28 2 _ dp 6. c. leq 30 "103 Dieses Blatt unterliegt den Weltergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben Cl: 0 z This document is subject to the restrictions set forth on the first or title page 25.5.98 6:55: 5 CD M ~0 DOKU.980513. 1842.14668 "Cr" Power (kMV) 300 0 CD .......................... .?........................... ............................ •........................... ............ ............. .t . .. . .. . . .......... •............................ .. . .. .. .. . .. . .! 280 S.......................... ........................... i . ....................... ...... .. . .. . .. ..i.... ............. ......... 260 - i ......................... .. .. . .................. ......... CD . . .. .. oo z 240 zCD 220 m 0• 200 180 .... .................. •............. ....... . . .÷ . . . . . . . . ......................... . . . .. . . ... . . ....... , .. . . . . . . . . ....... . . . . .. . . ........ ... . .. ... .... .. .. .. 160 140 . ..... ... ........................ .M ,,,,• I • • .................. ...................... ..-......ALM.. 6.1. hir 120 100 ..............." ...... ....................... ............ ........... .............. ................ ............. j S.......... S... ......,.......... ........................... ........... ................. ,,....... ......... ............................ , , , ,, ........................... S. ..... ..... ... . ......................... ..... 80 60 ... ...................... S. ...i................. ... -......... ............................ ............................ ............. i........................... t!.......................... 40 S. ................. ... ........................... .......................... ............................; • • 20 00 2 S!I 4 6 8 10 12 Depress. dp N Injection .... ....... 1. h. leg 10 2. c. lea 30 3. h. lea 20 4.3 PKL III B Experiment undofAnalysis Comparison RELAP5/M0d3.2 -B 4.3 und Analysis PKIL III RELAP(+) Comparison of Experiment b4_3 Data Transfer Experiment(X), Heat 20 Data b4_3 -- RELAP5/MOd3.2 Fig.4.41" SG Fig. 4.41: Heat Transfer SG 20 Experiment(X), RELAP(+) "(0 (D ; ................. ......... ........................... , , I 141 Time s) 4. c. lea 40 16 18 ",4 2 2'2 24 dp 5. h. leg 10 *103 26 dp 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben 0) 0 z This document is subject to the restrictions set forth on the first or title page 25.5.98 6:55-:5 '3 (D X DOKU.980513.1 842.14668 0 I Power (kW) 300] (. 0 Q. 280 ........ (D 260-. z 240 220 m N) 0 200 180 160 140 120 100- 80 60 "-U 40 (03 (0 20O "4) 0 0 2 4 6 10 12 16 18 Time s) Depress. dp N Iniection 141 2. c. leq30 3. h.lea 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/MOd3.2 Fig. 4.42: Heat Transfer SG 30 Experiment(X), RELAP(+) 4. c. lecg40 22 24 5. h. lea 10 26 dp dp 1p 1. h.leal10 2ý 6. c. lea 30 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrankungen wie auf Titelseite bzw. erster Seite angegeben 0 Z 25.5.98 6:55: 5 W) M. CD M (D Z DOKU.980513.1842.14668 Power (kW) ........... .............. ...................................................... ............................................ ................... 30 0 . ............ ...... . .................. ........ ....................... .............. ..................... .......................... .......... 2 80 . ............... 2 60 ............................................ . . . . . ... .......................... . ............ .... ........ ............... .............. ............ .......................... . . . . . . .. . .. .............. . . . . . K. . ..................... • . . ...... .. ...................... ... . ............ ........ .......... ...... ............. ........................ •........................... 2 4 0 ........................... .... . .,.............. ................. ........................... 2 2 0 . ........ ...... ................................. ......... ... .. ..... ....... .......... S..................... ............................ ..... ............................ ........ ..... ....... ....... ............. ...... 1o8 .................... . ....... ........ I.............................. ............ .. . .... .......... .. ....... .... .... ... ... ..... .. .......................... i .......................... i , I . .. ...... ..... ........ S. 1o20 . . .. . .. .. .. .. .. .... .. . .. .. . .. . .. . .. . ................ . . .. .. .................................................. -,4 .... ... ......................... ' •' ... ..... 180.-• 0 .2 . ..... ... .. O0 .................. . ................ ...... ...... .... : ...................... .i........................ ........................... ..... ...... S.................. ............... ..................... ..................... ............ ...... .................... ..... ................ ........... ................. ....................... "..... 2 0 0 . .......................... 180 140 ................ - ..... .... ... .... .. .............. "i.. ......................... N o i n a f' o' .............. ......... ",.,. r W.......ý. ............. ..lnal .,.Pow.er .. of. .,.o.m I&..... ,.,. .......... .............. ... ........................ ................ ........... .......................... ............................ ............................. ............................ S.................... .......................... .•........................... ........................... ... ............................ ........................................................ ........................... ............................ 1600 . ........................... ..... ............................. ....... .......................................................... ....... .............. . ................ ............. 8 0 ................. ........ .................... ...... ................................. ............................. ...... .... .. ................ ........................ 2 ................... S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .............. 60 0 .... I .............. ... I.' .... ........ 2 4 8 6 1 16 12 10 ' I 18 Tim4. Depress. dp J --4 .................... ...........................I . ......... ... ..... (0 . 20 . ........ N Injection W) . . . . . . . . . . . . . ................................ .......... 1. h. leg 10 • 2. c. leg 30 v 3. h. leg 20 v Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/M0d3.2 Fig. 4.43: Heat Transfer SG 40 Experiment(X), RELAP(+) 4. c. leg 40 ' 2I,' 22 24 dp 5. h. leg 10 "*103 26 dp 6. c. leg 30 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben z :D This document is subject to the restrictions set forth on the first or title page 25.5.98 7:19:1 'I DOKU.98051 3.1842.14668 0 Collapsed Level (m) 6 . ................... .... Di (D 0. ................. ................. ,, - 0 +CL_544 CD CL z 03 5 .. .... ............. ..... .. .......... .. .. C4D ...... ..... ..... "IIJ m r%3 0oP ................. ................ ........... 43 . ..... .............. i .......... - -+ +. ---. + - .... . LJ.. , 1. A. i lJIb~ll/, All:1.• hJ l ,1 3 2] .......... .......................... ............ 1 ................ ............ ........... ................. CD "-13 S! I 0 I 2 1. h. leg 10 I 6 _ Depress. dp N Injection ' 4 • 8 _ 2. c. leg 30 "I 10 I ' I' I ' 12 14TS) Time 3. h. leq 20 4. c. lea 40 _ Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.44: CL Loop-Seal 10 SG-Side RELAP(X), Experiment(+) I *1' 16 18 27 I *I' 22 'I' I 24 26 dp 5. h. lea 10 F 'l 28 dp 6. c. lea 30 i *103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschrankungen wle auf Titelseite bzw. erster Seite angegeben 25.5.98 7:19: 1 CD M z _0 0 DOKU.98051 3.1842.14668 Collapsed Level (m) 7 . ......................................................., "0. ....... ................... ........... ........... ..................... ..... . .. ... .. . . . ... . .. .. .... .. . .. .. ..... .. .. .. .. .. ... .. .. .... . .. .. .. .. .. . .. .. .. .. . ............................ z 0 5. )*-X CNTRLVAR233 C: Co z 6.,. 0 C0 . Z .'.. 9, -. --I 1 Time ds) Depress. dp N Injection 1. h. leg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.45: CL Loop-Seal 20 SG-Side RELAP(X), Experiment(+) 4. c. leg 40 16 18 28 2 dp dp dp - p 5. h. leg 10 6. c. leg 30 "103 Dieses Blatt unterliegt den Weitergabebeschr~nkungen wie auf Titelseite bzw. erster Seite angegeben t This document is subject to the restrictions set forth on the first or title page 25.5.98 7:19:1 :IJ CD DOKU.98051 3.1842.14668 0 Collapsed Level (m) (m) 6 .5 .................. ................. :3 CD )E-X CNTRLVAR333 0 6.0 ........ . ................... 5 .5 ........................... CL ............................................. .................. ................................ S.. ......................... ........ - l li~i... l J.....iii ................ l ................ I.. " ............ I• ...... ....... .. ..... . z 09 z 0 (0 ........ m 0 P.-- 5 .0 .. ..................... 4.5 JI11Iii!p ........ ............... r........... .......... tl ................. ............... S............. ........................... .... 4.0 -4........................... ......... .................. ............................ ................ ................... .. ............ .. .. .. .. . 3.5 . ... ....... .. ...................... ..............I 3.0- ... .. .. ... ... . .... .. .. .. .. . .. .. .. ... .. .. .. ... .. .. .. .. I................... "-o -.4 0) 2.5 2 4 6 8 10 12 Depress. dp N Injection 14n Time:js) 1i6 1i8 1dp 1. h. Ieg 10 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.46: CL Loop-Seal 30 SG-Side RELAP(X), Experiment(+) 4. c. leg 40 26 2 dp 5. h. leg 10 i 28 dp 6. c. leq 30 .10 3 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page 25.5.98 7:19:2 -r+ SD) CD DOKU.980513.1842.14668 Q Collapsed Level (m) (m) 65 0 "" .... . ........... . ............. ........ .. ....... ... .. . .. . .. .. X---+ CNTRLAR43 .......... . 6.0 . . . 0 . . . . . . .z: ,Z 0 ......... ........ ...... • 5 .5.÷ m iIII:,, .+. , , +,,. ...- ..+.......,. +... ............. ........................... ........................... ........................... ........................... . .............. ,........................ ; t,,,,,,....... ............................ 5 .0 ...... ........ +~ .... 4.5"" ................. ............... ..................... .......... I. + 3.5 3.0 3 .5 "' +.......... t............................ •m................. . +++. ; -i 9) - - ............................ -............................ ............................ ............................ ........................... ............................ ................. ........................... .............. ............................ .... ................................ ... .. ................ .. ...... .... ......................................... ........................... ........................... ................ ........................... ............................. ..... ........................... .............. ............. ........................ . ................ ............................ .......... ............................ .... 3 .0 . . .. "-.4 2.5 0 Depress. dp N Injection 2 dpTime Depess 4 6 8 10 12 14j _s) 16 - 18 2. c. leg 30 3. h. leg 20 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.47: CL Loop-Seal 40 SG-Side RELAP(X), Experiment(+) 22 24 dp _ 1. h. leg 10 2ý 4. c. leg 40 5. h. leg 10 26 28 dp 6. c. leg 30 *103 This document is subject to the restrictions set forth on the first or title page Dieses Blatt unterliegt den Weitergabebeschr.nkungen wie auf Titelseite bzw. erster Seite angegeben z) z 25.5.98 7:27:34 CD DOKU .980513.1842.14668 0 Collapsed (m) 7 .5 -1Level .......................... (0 0 CD S.................. ..............,............................ .. ..... ...... ........ .. ... ......................... . ................................ .... ......... i ...................... ; , •............. ... ................ .... • ; 7.0 ............... ...... CL) z (J) QO 6.5 ........................ ...................... ........... .... ............. ......................... . ............................. ... ..................... ..... ...................... ................................. . .................... ............... ......... .................. ....... m ![ 'Z A... i 1'z 6.0 5.5 AAU, .w i iii liy!~ .......... . . . .............................. . . ... ..... . . ...................... .. . . . . .. .... . . .. . .. . . . . . .... . . . . . -. . . . . . . .. . .... . . . . . . . .. .. . . . . . . . .. .. i 5.0 1J I _ ., ,.n • : .,.. .t I, il i l 4.5 4.0 Co CDo 3.5 I " 10 0 i ' I 12 " I" I 14s i Times 16 iI ' ' I 18 Depress. dp N Iniection i ' I, ' *103 dp dp 1. h. lea 10 2. c. lea 30 3. h. 1ea120 4. c. lea 40 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.48: RPV RELAP Core(X), DC(+); Experiment Core(Z), DC(Y) 5. h. lea 10 6. c. lea 30 Dieses Blatt unterliegt den Weitergabebeschrýinkungen wie auf Titelseite bzw. erster Seite angegeben This document is subject to the restrictions set forth on the first or title page tLiquid 26.5.98 6:23:30 DOKU.980513.1842.14668 a. 0 ,z U ....... ......... .............................................. . ......................... .......... z5" Generation (kg/s) ................................................. ................. 0 .02 0 . .............................. 0.015CD m CLCo . ............ ................ ........... .................... .... ............................. ... .................... . ..................... 0 .0 0 5 ,- ............. .!........................................................ ........................... .......................... ,............................ ........................... ' 0.000 . 4. ... ... - -- -i-+ - i ---RELAP Calculation 0 2 4 6 8 10 12 18 1. h. leg 10 2. c. leg 30 3. h. leg 20 4. c. leg 40 2- 22 24 5. h. leg 10 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.49: Condensate SG 10, Pipe 320 Ascending(X), Descending(+) U-Tube 26 28 dp dp Time~s) Depress. dp N Injection 16 CrD 6. c. leg 30 *103 Dieses Blatt unterliegt den Weitergabebeschrtnkungen wie auf Titelseite bzw. erster Seite angegeben C) z This document is subject to the restrictions set forth on the first or title page 26.5.98 6:23:46 CD DOKU.98051 3.1842.14668 :3 Liquid (kg/s) 0 . 0Generation 5............................... -o 0 z 0 CD 0, C CD z CL 0 0.04 (Co m 0 0.03 0.02 0.01 0.00 co CD 02 -0.01 '" I 6 ' ' I 8 ' " I " 10 " I J 1. h. leg 10 2. c. leg 30 " I ' 1T4 Tim c4eg 3. h. leg 20 4. c. leg 40 Depress. dp N Injection " 12 118 6 1 2d1 *103 dp 5. h. leg 10 Comparison of Experiment und Analysis PKL III B 4.3 Data b4_3 -- RELAP5/Mod3.2 Fig. 4.50: Condensate SG 20, Pipe 420 Ascending(X), Descending(+) U-Tube dp 6. c. leg 30 U.S. NUCLEAR REGULATORY COMMISSION NRC FORM 335 (2489) NRCM 110GD 3201,3202 1. REPORT NUMBER (Assigned by NRC, Add Vol., Supp., Rev., and Addendum Numbers, Ifany.) BIBLIOGRAPHIC DATA SHEET (See inshocb= on the revee) NUREG/iA-0170 2. TITLE AND SUBTITLE RELAP5/MOD3.2 Post Test Calculation of the PKL-Experiment PKLIII-B4.3 3. DATE REPORT PUBLISHED 3.__DATEREPORT__PUBLISHED j MONTH November YEAR 1999 4. FIN OR GRANT NUMBER 5. AUTHOR(S) L. Karner 6. TYPE OF REPORT Technical 7. PERIOD COVERED (InclusiveDaebs) 8. PERFORMING ORGANIZATION - NAME AND ADDRESS (ff NRC, provide Division, Office orRegion, U.S. NuclearRegulatory Commission,and malting addrss;if contractor, provide name and mailing address.) Siemens Energierzeugung (KWU) Freyerslebenstrasse 1 D-91058 Erlangen Germany 9. SPONSORING ORGANIZATION - NAME AND ADDRESS IfNRC, type "Seneas above'; ifconhw.acor, provideNRC Division, O•ft& or Region, U.S. NuckeerRegu/afor, Commission, and mailingaddress) Division of System Analysis and Regulatory Effectiveness Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 10. SUPPLEMENTARY NOTES 11. ABSTRACT (20o words or-ess) The PKL III test facility (Primar-Kreis-Lauf) simulates a typical 1300 MWe Pressurized Water Reactor of Siemens/KWU. In test B4.3, the influence of non-condensables on heat transfer inthe steam generators during reflux condenser conditions was investigated. This report presents the results of a post-test analysis of PKL 11I-B4.3 using RELAPS/MOD 3.2. A description of the input model is given, and the correspondence of measured and calculated results is discussed.. The results of the calculation show differences inthe distribution of nitrogen inthe primary system compared to the experiment When nitrogen was injected into the hot leg of the primary system, the heat transfer in the affected steam generator decreased. In contrast to the experiment RELAP calculated that the volumes in the adjacent steam generator did not get the full amount of nitrogen and that nitrogen was transported from the steam generators to other locations during the course of the transient Thus, the heat transfer in these steam generators later increased in contradiction to the measured values. In the steam generator tubes, RELAP calculated that the nitrogen accumulated in the descending part as predicted in the experiment For the ascending U-tubes RELAP predicted that the nitrogen was transported to the loop seal, which was not seen in the experiment Fluctuations occurred during the course of the RELAPS/MOD 3.2 analysis of the PKLIII 134.3 experiment This phenomenon may be the main reason, that RELAP calculates the transport of nitrogen from the steam generators into the system and predicts finally a homogeneous distribution of nitrogen in the primary system. The analysis performs an in kind contribution to the CAMP contract 12. KEY WORDS/DESCRIPTORS (Ust words orphrasesthat will assistresearchers in locating Yeraport 13. AVAILABILITY STATEMENT unlimited PKL III Test Facility PWR non-condensables steam-generator RELAP5/MOD3.2 14. SECURITY CLASSIFICATION (This Rge) unclassified (This Repor) unclassified 15. NUMBER OF PAGES 16. PRICE NRC FORM 335 (2-89) Federal Recycling Program NUREG/IA-O0170 fI,AIS/M(-j)3.2 V'OS'TTfEI Rl UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, DC 20555-0001 OFFICIAL BUSINESS PENALTY FOR PRIVATE USE, $300 '(AL4jUJLA-I ION (OF I HiP KII-fi', _KL-FXPL{IM!f• " k,k--"fvl K -1H K -iýfý; lp SPECIAL STANDARD MAIL POSTAGE AND FEES PAID USNRC PERMIT NO. G-67