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TURBINE TRIP AND MANUAL SCRAM DURING NORMALIZATION OF A HEAT EXCHANGER OF THE MAIN OUTPUT TRANSFORMER

On December 15th, 2007, while putting in service a heat exchanger of the main output transformer, after its reparation, the actuation of the protection of the block occurred, producing a turbine trip and electric commutation on the start up line. After that a manual SCRAM was needed according to the operating instruction, not being able to normalize the Electric System in the required time.

Location: ATUCHA-1
Event date: Sat, 15-12-2007
Nuclear event report
Legenda & explanation