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Effect of B4C Absorber Material on Melt Progression and Chemical Forms of Iodine or Cesium under Severe Accident Conditions
B4C制御材がシビアアクシデント時の炉心溶融過程およびヨウ素やセシウムの化学形に与える影響
2015
Transactions of the Atomic Energy Society of Japan
B4C制御材がシビアアクシデント時の炉心溶融過程およびヨウ素やセシウムの化学形に与える影響
Boron carbide (B 4 C) used for BWR or EPR absorbers could cause phenomena that never occur in PWR with silver-indium-cadmium absorbers during a severe accident. B 4 C would undergo a eutectic interaction with stainless steel and enhance core melt relocation. Boron oxidation could increase H 2 generation, and the change of liberated carbon to CH 4 could enhance the generation of organic iodide (CH 3 I) . HBO 2 generated during B 4 C oxidation could be changed to cesium borate (CsBO 2 ) by
doi:10.3327/taesj.j14.021
fatcat:473kknwopbbmjat2pc63mufrk4