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Recommendations for modeling upper plenum injection system for a pressurized water reactor

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Show simple item record Griffith, Peter Kan, John 2006-03-13T16:00:59Z 2006-03-13T16:00:59Z 1978-10
dc.identifier.other 04842804
dc.description.abstract The present work examines the unique heat transfer modeling problems associated with analysis of performance of an upper plenum emergency core cooling injection system during a postulated Loss-of-Coolant Accident (LOCA) in a pressurized water reactor. The particular system under study consists of four 4-inch pipes conveying emergency core cooling water from outside the pressure vessel through four spare control and rod mechanism housings and internal pipings, discharging the water directly over the top of the reactor core. Previously, it has been assumed that the water injected into the upper plenum passes through the reactor core to the lower plenum without any heat interaction with the fuel rods during a LOCA. This simplified model neglects the many beneficial and adverse effects that accompany the upper plenum injection. This study is undertaken to examine the following items · heat transfer to the emergency core coolant before reaching the core · flow and heat transfer through the reactor core · reflood heat transfer. The phenomena occurring will be delineated and recommendations made for calculating both conservative and best estimate values. The method of solving these problems will be illustrated in a series of examples given in the appendices. en
dc.description.sponsorship Final report for research project sponsored by Northeast Utilities Service Co. en
dc.format.extent 1978910 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher MIT Energy Laboratory en
dc.relation.ispartofseries MIT-EL en
dc.relation.ispartofseries 78-031 en
dc.subject Nuclear fuel elements. en
dc.subject Pressurized water reactors |x Cooling. en
dc.subject Pressurized water reactors |x Safety measures. en
dc.title Recommendations for modeling upper plenum injection system for a pressurized water reactor en
dc.type Technical Report en

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