Legacy Combustion Engineering Post Accident Monitoring Systems Nuclear Automation Background

Nuclear Automation
Legacy Combustion Engineering Post
Accident Monitoring Systems
Background
Description
One of the primary issues regarding legacy
Combustion Engineering (CE) Post Accident
Monitoring Systems (PAMS) is maintainability.
Westinghouse continuously strives to maintain a
complete line of spare and replacement parts for
these legacy PAMS.
Legacy Multibus-I Based
CE PAMS Components
In this rapidly changing technological environment,
component obsolescence is a constant concern.
When possible, Westinghouse offers form, fit and
function replacement components for many of the
CE PAMS components that are threatened by part
obsolescence.
Westinghouse can provide extended-life support
(repair or replacement) for the following legacy
PAMS components:
• Micro computer board - SBC 80/24 and SBC
80/24A
• Math module - SBX 332
• I/O expansion card - SBC 116A
• Analog input card - DT1748*
• Analog input expansion module - DT1748-EX*
• Analog input card - ST732
• Analog output card - ST724
• Communications card - iSBC 544
• Analog input filter board
• Signal conditioning card - DT701
* Last time buy has been issued by the manufacturer for this
component September 2011.
April 2012
NA-0006
©2014 Westinghouse Electric Company LLC. All Rights Reserved
Updated Components:
Westinghouse has engineered new components
that are qualified replacements for the original
equipment manufacturer parts, and are intended
to meet or exceed the original part requirements.
QSPDS Plasma Display Unit Replacement:
Common QTM, 19-inch (48.26-cm) flat panel
display (FPD)
As a part of Westinghouse’s effort to supply
a continuous flow of replacements parts, the
Common Q FPDS has been equipped with newly
developed software that emulates the original
functionality of the QSPDS.
Reference:
• Qualified Safety Parameter Display System
(QSPDS) plasma display unit upgrade
(NA-0050 publication)
Benefits
• Extends the useful life of legacy CE PAMS
• Defers the large expense and downtime
associated with a complete PAMS
CE PAMS Coverage
• Inadequate core cooling monitoring system
(ICCMS)
• Subcooled margin monitor (SMM)
• Core exit thermocouple monitoring system
(CETMS)
• Heated junction thermocouple system (HJTCS)
• QSPDS
System Platform
INTEL - Multibus-I based systems
Power Supplies Replacement:
±5V, ±12V power supply replacement
+28Vdc power supply replacement
Heater controller chassis replacement
Miscellaneous:
Fiber-optic modem assembly replacement
Cabinet blower replacement
CE legacy PAMS diagram
Repair Services
Extensive repair services are available for many of the
legacy CE PAMS components, such as power circuit
breakers, power supplies and displays.
Software Maintenance
Westinghouse retains the ability to support system software
upgrades and maintenance for legacy CE PAMS.
Common Q is a trademark or registered trademark of Westinghouse
Electric Company LLC in the United States and may be registered in
other countries throughout the world. All rights reserved. Unauthorized
use is strictly prohibited.
Westinghouse Electric Company
1000 Westinghouse Drive
Cranberry Township, PA 16066
www.westinghousenuclear.com