INES-event
INES 1

LOSS OF 250V DC CONTROL POWER SUPPLY TO 415 V BKRS CONNECTED WITH CLASS-III BUS L&LX

During normalisation of power supply system after grid supply failure the DC power supply to breaker control circuit failed due to loose contact in class-1 supply circuit. This resulted in loss of protection to breakers of critical power supply circuit. Hence rated in category one.

Location: RAJASTHAN-2
Event date: Thu, 03-09-1992
Nuclear event report
Legenda & explanation