Containment Venting Analysis for the Shoreham Nuclear Power Station

Technical Report · Fri Mar 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/5890518· OSTI ID:5890518

Galyean, W. J. ^[1]; Kelly, D. L. ^[1]

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1. EG and G Idaho, Inc., Idaho Falls, ID (United States)

An evaluation of the Shoreham Mark 2 containment was performed to identify the effects of containment venting on the core melt frequency, containment failure mode, and offsite consequences. The analysis was based on the Long Island Lighting Company's updated 1988 probabilistic risk assessment of the Shoreham plant with the proposed supplemental containment system (SCS). The SCS is a filtered containment vent system based on the Swedish Filtra system installed at the Barseback Nuclear Power Station in southern Sweden. The following three different containment venting strategies were examined for their effects on plant risk: venting using the proposed Filtra system; venting using the existing equipment at Shoreham; and no venting. In addition, the consequences of containment venting were examined in conjunction with two sets of assumptions about the effects of a harsh reactor building environment, produced by containment failure or venting through the existing containment and reactor building heating, ventilating, and air conditioning systems, on the equipment located there. Specifically, the analyses studied the consequences when a harsh reactor building environment is assumed to have either no adverse effect on equipment or to fail all equipment.

• Research Organization: US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Office of Nuclear Regulatory Research; EG and G Idaho, Inc., Idaho Falls, ID (United States)
• Sponsoring Organization: USNRC; USDOE
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5890518
• Report Number(s): NUREG/CR--5654; EGG--2632; ON: TI91010630
• Country of Publication: United States
• Language: English

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