Nuclear Regulatory Commission

Issue 10: Surveillance and Maintenance of TIP Isolation Valves and Squib Charges

This issue apparently originated as a DOR proposal and was discussed in SECY-80-325.

Under the scope of the TMI Action Plan Item II.K.3 in NUREG-0660,[1]the NRC Bulletin and Orders Task Force conducted generic

This concern was identified by the ACRS as a result of their review[1]of LERs covering a perio

Flow-induced vibrations caused by vortex shedding resulting from rapid area change, buffeting due to random flow turbulence, fluid str

BWRs are operated in such a manner as to attempt to produce an axial power distribution with as little peaking as possible.

The concern of this issue involves the requirement for verification that the balance-of-plant equipment satisfies the design intent.

The exact scope of this issue is unclear and SPEB has used the following interpretation in its evaluation. Based

This issue is identified in Appendix D of NUREG-0572[1]and is o

This issue was identified[1]after a review of LERs involving the failure or degraded performance of essen

This issue is identified in Appendix D of NUREG-0572[1]and is one of the key observations made