US Dept. of Energy
Office of International
Nuclear Safety and Cooperation
1000 Independence Ave S.W.
Washington, DC 20585
When an abnormal event occurs at a nuclear power plant, safe resolution requires rapid,
effective response. Safety parameter display systems give control room operators the
information they need during plant emergencies. Specialists at U.S. nuclear power plants
developed safety parameter display systems after the 1979 nuclear accident at Three Mile
Island, which underscored the need for information to be better displayed in control rooms.
|Safety parameter display systems provide critical
information on plant conditions to control room personnel
during emergencies. (Photo courtesy of Energoatom.)
A safety parameter display system collects and displays
critical safety information at a workstation in the control room
and other locations in the plant. Information on the status of
key conditions, such as reactor core cooling, is displayed in a
clear format on a computer screen. The information displayed
enables the nuclear plant operators to assess plant conditions
rapidly and take corrective actions. The United States is
working with specialists in Russia and Ukraine to develop
safety parameter display systems for Soviet-designed nuclear
power plants. U.S. and host-country experts also are
developing symptom-based emergency operating instructions
to be used with safety parameter display systems. The system,
when used with emergency operating instructions, enables the
operators to recognize and correct abnormal conditions rapidly.
Installation of the first display system for a Soviet-designed
reactor was completed in July 1997 at Kursk's reactor Unit 2
in Russia. Under contract to Parsons Power Group,
Westinghouse Electric Company and Russia's Research and
Development Institute of Power Engineering collaborated on design and production. A
system for Chornobyl Unit 3 in Ukraine was installed in 1998.
U.S.-based Burns & Roe Enterprises, Inc., and Science Applications International
Corporation are collaborating with ConSyst, a Russian company, on design and production
of display systems for VVER-440/230 reactors in Russia. A system was installed in 1998
at Novovoronezh Unit 3 in Russia. A system is also scheduled for installation in
Novovoronezh Unit 4.
Burns & Roe and Westinghouse Electric Company are developing safety parameter display
systems for the VVER-1000 reactors in Ukraine. Ukraine's State Scientific Engineering
Center and Westron, a joint venture of Westinghouse and the Ukrainian company Hartron,
provide technical support. Three systems were installed in 1998--at South Ukraine Unit 1,
Khmelnytskyy Unit 1, and Zaporizhzhya Unit 5. Experts have initiated the design of three
additional systems in Ukraine--for South Ukraine Unit 2, Rivne Unit 3, and Zaporizhzhya
Unit 3. These will be installed in 1999.