This morning, an automatic short-time switching of the Unit 1 from the power grid occurred. It was due to the trip of a turbine driven feedwater pump caused by an error at the planned pump maintenance. Subsequently, the automatic systems switched the Unit off the grid in compliance with the design. The Unit's electricity delivery to the electricity distribution grid will be restored this very day. 

The turbine driven feedwater pump
A pump in the non-nuclear part of the Unit. It is its function to provide for the circulation of feedwater that is generated by the steam condensation after the passage through the turbine to the steam generator. It is in the steam generator that the steam is turned back to steam.

Information on parameters at Unit 1 today on January 23, 2009 at 11:00 o‘clock:

• Unit is in Mode 3
• Reactor power is 0 %
• Turbine generator output - 0 MWe
• Electricity production since the beginning of the year: 528 746 MWh

Information on parameters at Unit 2 today on January 23, 2009 at 11:00 o‘clock:

• Unit is in Mode 1 - power operation
• Reactor power is 100 %
• Turbine generator output - 1008 MWe
• Electricity production since the beginning of the year: 531 474 MWh

Marek Sviták
Spokesman of the ČEZ Group
Nuclear Power Plant Temelín