Resolution of Generic Safety Issues: Item C-3: Insulation Usage Within Containment (Rev. 1) ( NUREG-0933, Main Report with Supplements 1–34 )
Various kinds of insulation are used on piping and components inside the containment of a nuclear power plant. The concern of this NUREG-04713 item was the behavior of insulation under pipe break accident conditions where the potential exists for impairing the effectiveness of containment emergency sumps.
The purpose of this task was to gain a better understanding of how insulation might behave under pipe break accident conditions. It was intended that any information gathered be used to assess: (1) the assumptions made regarding insulation behavior for subcompartment analysis; (2) and the need for revising containment emergency sump design requirements.
This item was addressed in the resolution of Issue A-43, "Containment Emergency Sump Performance."