August 2000 Highlight

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In early August, a U.S. team member from Pacific Northwest National Laboratory met with representatives of Data Systems & Solutions, Western Services Corporation, and Ignalina NPP to discuss a safety parameter display system (SPDS) for the Ignalina plant. The SPDS is a high-priority safety enhancement for Ignalina. Because the plant is currently replacing its TITAN process computer with a new Information Computer System (ICS), a limited-scope SPDS could be combined with the ICS at considerable saving over the cost for a full-scope SPDS. During the meeting, the participants reviewed the draft specifications to ensure that the system identified was consistent with the project budget. Hardware reductions of approximately 50 percent and labor reductions of approximately 38 percent were identified by the participants.

While at the plant, the U.S. team member also reviewed the status of installation of electrical and mechanical equipment associated with the backup control-and-protection system provided for Unit 2 with U.S. support. When site acceptance tests were conducted in April 2000, installation of the sensing lines, sensors, conduit, and cable to the logic cabinets had not been completed due to reactor power operations that inhibited access to some areas of the plant. However, by early August, the remaining equipment had been installed except for one-half of the flow transmitters for the 32 main coolant pumps. According to plant management, remaining installations will occur during the fall maintenance outage, and final testing of the system will commence immediately following installation of the sensing lines. (Rich Reister, DOE, 301-903-0234; Ron Wright, PNNL, 509-372-4076)