Safety Evaluation Report: Mark I containment long-term program. Resolution of Generic Technical Activity A-7

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6809635

When the NRC staff published Safety Evaluation Report, Mark I Containment Long-Term Program (NUREG-0661) in July 1980, four areas were identified where the technical issues had not been fully resolved. These were: (1) specification for condensation oscillation loads acting on the downcomers, (2) adequacy of the data base for specifying torus wall pressures during condensation oscillations, (3) possibility of asymmetric torus loading during condensation oscillations, and (4) effect of fluid compressibility in the vent system on pool swell loads. The first item, downcomer condensation oscillation loads, lacked an acceptable load definition. The remaining three items had acceptable specifications; however, NRC requested additional confirmatory information to justify the adequacy of the load specifications. This supplement addresses the resolution of the four issues listed above. In response to NRC concerns expressed in NUREG-0661, the Mark I Owners Group conducted additional experimental and analytical studies.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (USA). Office of Nuclear Reactor Regulation
• OSTI ID: 6809635
• Report Number(s): NUREG-0661-Suppl.1; ON: DE82906228
• Country of Publication: United States
• Language: English

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