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BWR blowdown heat transfer program. Final report

R. Muralidharan, G.W. Burnette, A.F. Morrison, R. J. MUZZY, E.J. Pastor, Giovanna Sozzi, J.P. Walker

Abstract

System performance and thermal response characteristics of BWR's during the initial blowdown phase under loss-of-coolant accident (LOCA) conditions were investigated in a scaled test apparatus. A number of inherent cooling mechanisms were observed for which no credit is taken in the current BWR LOCA evaluation method. The current method, when applied to the test apparatus, shows a substantial margin in the prediction of peak cladding temperature. Specific phenomenological model improvements are recommended.

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Available abstract

Key concepts: Boiler blowdown, Loss-of-coolant accident, Nuclear engineering, Cladding (metalworking), Heat transfer, Current (fluid), Coolant, Environmental science