Figure 7.1-7—Safety Automation System Architecture U.S. EPR FINAL SAFETY ANALYSIS REPORT

U.S. EPR FINAL SAFETY ANALYSIS REPORT
Figure 7.1-7—Safety Automation System Architecture
Tier 2
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Figure 7.1-8—Priority and Actuator Control System Architecture
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Figure 7.1-9—Severe Accident I&C System Architecture
Division 2
Division 1
Division 3
Division 4
Plant Data Network
MSI
Note 1
Note 1
CU
M2-G2
M2-G1
SA I&C - SICS
Note 1
CU
CU
DCM
CU
DCM
DCM
PACS
PACS
Note 1 – Hardwired inputs may be from sensors or other I&C systems
Tier 2
M2-SU
MSI
Note 1
PACS
M2-G2
M1-G2
M1-G1
GW 2
M2-G1
GW 1
M2-SU
M1-SU
M1-G2
M1-G1
SA I&C - SICS
M1-SU
SU
Revision 0
DCM
PACS
EPR3040 T2
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Figure 7.1-10—Reactor Control, Surveillance, and Limitation System Architecture
Division 2
Division 1
Division 3
Division 4
Plant Data Network
MSI
M4-G2
M4-G1
M4-SU
M4-SU
M4-G2
M1-G2
M4-G1
M1-G1
M1-G2
M1-G1
M1-SU
SU
M1-SU
GW 2
GW 1
MSI
Note 1
Note 1
Note 1
DU-M1
DU-M2
Note 1
AU
AU
CU
DU
DU-M1
AU
DU-M2
AU
CU
DU
DU
CRDCS
DU
CRDCS
Note 1 – Hardwired inputs may be from sensors or other I&C systems
EPR3045 T2
Tier 2
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Figure 7.1-11—Process Automation System Architecture (Nuclear Island Subsystem)
Division 1
Division 2
Division 3
Division 4
Plant Data Network
Note 1
CU
A
PASPACS
Note 1
CU
B
CU
A
Note 1
CU
A
CU
B
PASPACS
Note 1
CU
B
PASPACS
Note 1 – Hardwired inputs may be from sensors or other I&C systems
Tier 2
Revision 0
CU
A
CU
B
PASPACS
EPR3050 T2
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Figure 7.1-12—Process Automation System Architecture (Turbine Island and Balance of Plant Subsystem)
Turbine Island
Subsystem
Balance of Plant
Subsystem
Plant Data Network
Note 1
CU
A
Note 1
CU
A
CU
B
Note 1 – Hardwired inputs may be from sensors or other I&C systems
Tier 2
Revision 0
CU
B
EPR3055 T2
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Figure 7.1-13—Process Automation System Architecture (Diverse Actuation Subsystem)
Division 1
Division 2
Division 3
Division 4
Plant Data Network
Note 1
Note 1
Note 1
Note 1
DAU
DAU
DAU
DAU
PACS
PACS
PACS
PACS
Note 1 – Hardwired inputs may be from sensors or other I&C systems
Tier 2
Revision 0
EPR3060 T2
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100
Intermediate Range
10-2
10-3
10-4
10-5
10-6
10-7
-8
10
4 x 2 Power Range Detectors
4 Intermediate Range Detectors
Source Range
Relative Reactor Power P/Pr (Pr = Rated Power)
10-1
Power Range
Figure 7.1-14—Measuring Ranges of Excore Instrumentation
3 Source Range Detectors
10-9
10-10
EPR3065 T2
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Figure 7.1-15—Excore Instrument Detector Locations
O
Ø
IRD Div 2
SRD Div 2
Ø
0°
I
I
PRD Div 2
IRD Div 3
PRD Div 3
315°
45°
I
I
I
I
I
I
O
270°
SRD Div 1
-
-
-
225°
Ø
IRD Div 1
PRD Div 1
Notes:
1. PRD :
2. IRD :
3. SRD :
Ø
Ø
O
-
-
-
-
-
+
I
I
I
I
I
I
I
I
I
-
180°
Power Range Detector
Intermediate Range Detector
Source Range Detector
-
-
-
-
-
-
-
-
90 ° O
SRD Div 3
135°
Ø
IRD Div 4
PRD Div 4
4 locations of 2 detectors
4 locations of 1 detector
3 locations of 1 detector
EPR3070 T2
Tier 2
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Figure 7.1-16—Boron Concentration Measurement System Arrangement
Container
Counter Tube
B-10
Signal Processing
Flow
To PS
Neutron Source
Temperature
Detector
EPR3075 T2
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Figure 7.1-17—Implementation of Defense-In-Depth
OPERATIONAL I&C FUNCTIONS
RCSL
PAS
TG I&C
PREVENTIVE LINE
OF DEFENSE
LIMITATION I&C FUNCTIONS
RCSL
PAS
TG I&C
SAFETY I&C FUNCTIONS
(Mitigate DBE’s, Achieve Safe Shutdown)
MAIN LINE
OF DEFENSE
PS
SAS
RISK REDUCTION I&C FUNCTIONS
(Mitigate BDBE’s, Severe Accidents)
RISK REDUCTION
LINE OF DEFENSE
PAS
SA I&C
EPR3080 T2
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LEVEL 2
UNIT SUPERVISION AND CONTROL
Figure 7.1-18—Implementation of Diversity
Digital
TXS/HW
Digital
Non-TXS
Platform
Diversity
SICS
PICS
Digital
TXS
Digital
Non-TXS
LEVEL 1
SYSTEM AUTOMATION
PS
A
B
SAS
SA I&C
Platform
Diversity
RCSL
Platform
Diversity
Functional
Diversity
PAS
NonDigital
LEVEL 0
PROCESS INTERFACE
PACS
Tier 2
Diversity in Reactor Trip Devices
Diverse
Sensors
Trip
Breakers
(UV Coils)
Trip
Breakers
(ST Coils)
Trip
Contactors
CRDCS
Control
Logic
EPR3085 T2
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Figure 7.1-19—Implementation of Independence Between Redundant Divisions
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Figure 7.1-20—Implementation of Independence Between Safety and Non-Safety I&C
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Figure 7.1-21—Levels of Defense for Cybersecurity
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