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PWR FLOW COASTDOWN CURVES FOR SIMULTANEOUS LOSS OF ALL FOUR OR ALL THREE PUMPS

Technical Report ·
OSTI ID:4327660

Flow coastdown curves are given for the Shippingport Pressurized Water Reactor Plant (PWR) with core 1 installed at four loop and three loop oopration under assumption of simultaneous power loss to all pumps operating. The calculation of the flow coastdown curves was carried out only for a 16-second time interval. It is expected that flow will continue after 15 seconds, with the chock valve hung open. Natural convective circulation will maintain some flow as a result of decay heat from the core, when the flow coastdowm rate approaches that consistent with the thermal driving head. (W.L.H.)

Research Organization:
Westinghouse Electric Corp. Bettis Plant, Pittsburgh
NSA Number:
NSA-12-007484
OSTI ID:
4327660
Report Number(s):
WAPD-PWR-PA-2025
Country of Publication:
United States
Language:
English

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