INES-event
INES 1

SOIL CONTAMINATION WHILE PUMPING OUT RAIN WATER FROM TAPS-TRAP TRANSFER LINE INSPECTION PIT

Due to heavy rains the TAPS-TRAP (Tarapur Radwaste Augmentation Plant) transfer line inspection pit no. 1 got filled. Water sample was collected from inspection pit no. 1. As the activity was found to be below detectable limit the water was cleared for pumping out. While pumping out the discharge line hose gave way and some amount of water got leaked into the adjacent grass soil. Health physics survey of the area indicated that the soil near the pit was contaminated and having about 0.5 mGy/hr radiation field. The soil got contaminated due to the muck collected at the bottom of the pit which came out while pumping out the water. The water sample which was collected from the pit for analysis was not representative as the pit water was not agitated before sampling. The contaminated soil was scooped out and disposed off as solid waste.
Justification: Applying clause IV 5.1.3 of users manual the event is rated level 1.

Location: TARAPUR-1
Event date: Fri, 21-08-1992
Nuclear event report
Legenda & explanation