Background
Many nuclear utilities installed their post-accident monitoring instrumentation using technology from the late 1970s and early 1980s. In this rapidly changing technological environment, component obsolescence and ever increasing operations and maintenance (O&M) costs are a growing concern. To address this, 金博体育 is pleased to offer a modernized PAMS using its common qualified (Common Q鈩�) platform.
Description
The Common Q鈩� platform is a single common platform designed with modular components that can be combined to solve most utility needs for Class 1E applications, including component replacements and complete system upgrades.
The Common Q鈩� PAMS includes the following functions:
- Core exit thermocouple monitoring
- Reactor vessel level monitoring
- Subcooled margin monitoring
- Regulatory Guide 1.97 monitoring
By definition, Common Q鈩� is Class 1E; therefore, all of its building blocks are Class 1E. The Common Q鈩� platform consists of the following major building blocks that can be used to design a modernized PAMS:
- ABB Advant庐 Controller 160 (AC160) with PM646A processor module input and output cards
- Modular power supply assembly
- Flat panel display system (for operator鈥檚 module and maintenance/test panel)
- Advant庐 fieldbus (AF100) communication
The Common Q鈩� PAMS includes built-in self-diagnostic and automated test features designed to reduce manual surveillance test labor. The system is also equipped with a variety of communications interfaces including UDP and isolated TCP/IP links designed to provide an interface to the unit鈥檚 existing plant computer.
Typical Common Q鈩� PAMS Architecture
Benefits
Reliability
Common Q鈩� has a proven history of reliability and availability.
- Availability of System 99.9999%
- Mean Time between Failures (MTBF) of AC160 > 70 years
- Mean Time to Repair (MTTR) Components < 6 hours
Verification and Validation
The 金博体育 PAMS is qualified for Class 1E nuclear safety-related applications. This system is also in compliance with the U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide 1.97. A verification and validation program, approved by the NRC, is used for Common Q鈩� development activities. 金博体育 customers can directly reference the Common Q鈩� Safety Evaluation Report for any of their licensing submittals to ease the licensing process.
Obsolescence Management
金博体育 has structured a long-term obsolescence management program as part of its Common Q鈩� solution. The 金博体育 Common Q鈩� design philosophy is focused on engineering that supports standard designs and reusability, thereby reducing overall O&M lifecycle costs. 金博体育 is employing this design philosophy for all new nuclear power plants and operating power plants that it supports around the world.
The 金博体育 Common Q鈩� obsolescence support plan is designed to provide configuration control for investment protection and management of the long-term obsolescence support goal. The elements of this plan are:
- Full production (for new systems) for an extended period without requalification cost to the utility
- Spare parts production for an additional period without requalification
- 金博体育-pooled inventory spares stocking, as required, based upon usage history and expected plant life
Common Q鈩� AC160 Processor
Experience
金博体育鈥檚 Common Q鈩� Platform has one of the largest safety-related installed bases in nuclear power plants in the world including:
- 1,300+ Cabinets
- 2,500+ AC160 rack
- 800+ Flat Panel Displays
- 4,000+ Controllers
As the technology of choice for all new plant safety systems and operating plant safety system upgrades, 金博体育 is committed to long term support of the Common Q鈩� product line with contractual support commitments to 2055 and beyond.
Common Q鈩� PAMS (shown with factory test carts)
O&M Savings
The 金博体育 Common Q鈩� PAMS is designed to reduce Operating and Maintenance costs through technology, high reliability, and integration.
- The online surveillance and automated test features have been reviewed and approved by the NRC as described in the Common Q鈩� safety evaluation report. This provides the potential to extend the interval of calibration checks and manual tests.
- As a fully digital system, the AC160 does not require ongoing calibration like legacy analog systems.
- Common Q鈩� technology promotes synergistic data integration with other I&C systems such as a Plant Computer, other Common Q鈩� systems, or an Ovation鈩� control system.
Common Q is a trademark or registered trademark of 金博体育, its affiliates and/or its subsidiaries in the United States of America and may be registered in other countries throughout the world. All rights reserved. Unauthorized use is strictly prohibited. Other names may be trademarks of their respective owners.
Advant is a registered trademark of ABB Process Automation Corporation. Other names may be trademarks of their respective owners.
