Frontiers in Energy
>> 2019,
Volume 13,
Issue 4
doi:
10.1007/s11708-019-0616-0
RESEARCH ARTICLE
Phenomena identification and ranking table exercise for thorium based molten salt reactor-solid fuel design
. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Accepted: 2019-03-12
Available online: 2019-03-12
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Abstract
Thorium based molten salt reactor-solid fuel (TMSR-SF) design is an innovative reactor concept that uses high-temperature tristructural-isotropic (TRISO) fuel with a low-pressure liquid salt coolant. In anticipation of getting licensed applications for TMSR-SF in the future, it is necessary to fully understand the significant features and phenomena of TMSR-SF design, as well as its transient behavior during accidents. In this paper, the safety-relevant phenomena, importance, and knowledge base were assessed for the selected events and the transient of TMSR-SF during station blackout scenario is simulated based on RELAP/SCDAPSIM Mod 4.0. The phenomena having significant impact but with limited knowledge of their history are core coolant bypass flows, outlet plenum flow distribution, and intermediate heat exchanger (IHX) over/under cooling transients. Some thermal hydraulic parameters during the station blackout scenario are also discussed.
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