South Ukraine NPP: Safety improvements through Plant Computer upgrade
- Westinghouse Electric Company, 4350 Northern Pike, Monroeville, PA 15146 (United States)
- Westron, LLC, 1 Acad. Proskura St., Kharkiv 61070 (Ukraine)
- Battelle, 505 King Ave, Columbus, OH 43201 (United States)
- NAEK Energoatom, 3 Vetrov Str., Kiev, 01032 (Ukraine)
- PO South Ukraine NPP, NAEK Energoatom, Mylolayv Region, 55000 (Ukraine)
- US Dept. of Energy, International Nuclear Safety Program, Washington, DC 20585 (United States)
This paper summarizes some results of the Plant Computer upgrade at the Units 2 and 3 of South Ukraine Nuclear Power Plant (NPP). A Plant Computer, which is also called the Computer Information System (CIS), is one of the key safety-related systems at VVER-1000 nuclear plants. The main function of the CIS is information support for the plant operators during normal and emergency operational modes. Before this upgrade, South Ukraine NPP operated out-of-date and obsolete systems. This upgrade project wax founded by the U.S. DOE in the framework of the International Nuclear Safety Program (INSP). The most efficient way to improve the quality and reliability of information provided to the plant operator is to upgrade the Human-System Interface (HSI), which is the Upper Level (UL) CIS. The upgrade of the CIS data-acquisition system (DAS), which is the Lower Level (LL) CIS, would have less effect on the unit safety. Generally speaking, the lifetime of the LL CIS is much higher than one of the UL CIS. Unlike Plant Computers at the Western-designed plants, the functionality of the WER-1000 CISs includes a control function (Centralized Protection Testing) and a number of the plant equipment monitoring functions, for example, Protection and Interlock Monitoring and Turbo-Generator Temperature Monitoring. The new system is consistent with a historical migration of the format by which information is presented to the operator away from the traditional graphic displays, for example, Piping and Instrument Diagrams (P and ID's), toward Integral Data displays. The cognitive approach to information presentation is currently limited by some licensing issues, but is adapted to a greater degree with each new system. The paper provides some lessons learned on the management of the international team. (authors)
- Research Organization:
- American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 22029998
- Resource Relation:
- Conference: NPIC and HMIT 2006: 5. International Topical Meeting on Nuclear Plant Instrumentation Controls, and Human Machine Interface Technology, Albuquerque, NM (United States), 12-16 Nov 2006; Other Information: Country of input: France; 4 refs.; Related Information: In: Proceedings of the 5. International Topical Meeting on Nuclear Plant Instrumentation Controls, and Human Machine Interface Technology| 1430 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMPUTERS
DATA ACQUISITION
DATA ACQUISITION SYSTEMS
ENGINEERED SAFETY SYSTEMS
INFORMATION SYSTEMS
MAN-MACHINE SYSTEMS
NUCLEAR POWER PLANTS
REACTOR ACCIDENTS
REACTOR CONTROL SYSTEMS
REACTOR SAFETY
RELIABILITY
SAFETY ENGINEERING
TEMPERATURE MONITORING
UKRAINE
US DOE
WWER TYPE REACTORS