INES-event
INES 1

OVEREXPOSURE OF OPERATOR DURING CALIBRATION OF IN-CORE SENSORS

On November 30, 1995 in in-core sensors where calibrated during operation of Unit 2 reactor at the thermal power of 3750 MW. While lowering a sensor, one of the involved operators entered the reactor hall and was inside for 1.5-2 minutes. The operator was exposed to 5 ber. Since the beginning of this year his accumulated dose has amounted to 5.3 ber that is above the specified annual man-rem dose limit.
INES rating level 1 under defence in depth
Justification: Section I.I.2 and III.5 of INES User's Manual

Location: IGNALINA-2
Event date: Thu, 30-11-1995
Nuclear event report
Legenda & explanation