INES-event
INES 2

INCONCLUSIVE QUALIFICATION TEST RESULTS OF ELECTRIC CONNECTORS IN LOCA AND SLB ENVIRONMENT

Recent results of the qualification tests of DOEL 3 electric containment penetrations, as well as of other safety related connectors, for large loss of coolant and steam line break conditions have shown that the insulation of the connectors is significantly degraded after a few minutes. While automatic protection of the reactor remains unaffected, the post accident control room activities could be made more difficult. After a detailed analysis of the situation it was concluded that the accidents can be mastered provided that additional procedural measures are taken. Some of the connectors have been modified immediately, others will be modified during the next refueling outage.

Location: DOEL-3
Event date: Tue, 01-09-1992
Nuclear event report
Legenda & explanation