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Media Nuclear Power Plant news

25. 4. 2007

JE Temelin traffic

Information on NPP Temelín 83 / 2007

Unit 2 is in operation at planned power level. Unit 1 reduced automatically the reactor power in compliance with the design to 37 % this morning at 5:31 o‘clock. The turbine generator output was regulated down to 270 MWe. The reason of the power reduction was a trip of one out of two pumps of the circulation cooling water in the non-nuclear part that provided for the circulation of water through the cooling towers.

April 25, 2007

The reason was signaling of increased moisture within the pump motor. Till the completion of the event examination, the generator was in agreement with the power system dispatching switched off from the distribution grid and the reactor power is maintained at 30 %. After a detailed inspection, a leak was confirmed in the distribution of the cooling water within the circulation pump motor. The technicians started the repair and, after its completion, the unit will be re-synchronized to the grid this evening. The preliminary event evaluation is by the international scale INES-0 deviation. All auxiliary systems are working in accordance with the operation needs of individual units.

Information on parameters at Unit 1 today on April 25, 2007 at 10:15 o‘clock:
· Unit is in Mode 1 - power operation
· Reactor power is 30 %
· Turbine generator output - 0 MWe
· Electricity production since the beginning of the year: 662 342 MWh

Information on parameters at Unit 2 today on April 23, 2007 at 10:15 o‘clock:
· Unit is in Mode 1 - power operation
· Reactor power is 100 %
· Turbine generator output - 1010 MW
· Electricity production since the beginning of the year: 2 735 843 MWh

Václav Brom
Spokesman of the CEZ Group Temelín NPP