Small break LOCA (loss of coolant accident) mitigation for Bellefonte

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7037686

Bayless, P D; Dobbe, C A

Several 5-cm (2-in.) diameter cold leg break loss coolant accidents for the Bellefonte nuclear plant were analyzed as part of the Severe Accident Sequence Analysis Program. The transients assumed various system failures, and included the S/sub 2/D sequence. Operator actions to mitigate the S/sub 2/D transient were also investigated. The transients were analyzed until either core damage began or long-term decay heat removal was established. The S/sub 2/D sequence was analyzed into the core damage phase of the transient. The analyses showed that the flow from one high pressure injection pump was necessary and sufficient to prevent core damage in the absence of operator actions. Operator actions were also able to prevent core damage for the S/sub 2/D sequence.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 7037686
• Report Number(s): EGG-M-22286; CONF-8610135-23; ON: DE87002613
• Country of Publication: United States
• Language: English

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ACCIDENTS
BELLEFONTE-1 REACTOR
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HYDRAULICS
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REACTOR ACCIDENTS
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THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS