INES-event
INES 1

Degraded pressure subpression (PS) function

During start up a test revealed that no pressure difference existed between the dry well and the wet well. The reason was an erroneously left open valve. This reduced the containment pressure subpression function.

Justification:
Initiator did not occur. Structural defect exists, would not have led to an initiator. Availability of the safety function inadequate. Initiator: Major LOCA.

Location: BARSEBECK-2
Event date: Wed, 12-06-1996
Nuclear event report
Legenda & explanation