[2H19-23] Criticality Management 2

[2H22] Criticality control technique development for Fukushima Daiichi fuel debris

(27)applicability of soluble neutron absorber

*Yasuhiro Harada^1,2, Makoto Nakano^1,2, Yousuke Kamikawa^1,2, Yuichi Shimizu^1,2 (1.International Research Institute for Nuclear Decommissioning, 2.Mitsubishi Heavy Industries, LTD.)

Keywords:Fukushima daiichi plant SA, molten nuclear fuel, fuel debris, criticality safety, neutron absorber

We assume to use soluble neutron absorber while fuel debris retrieval work at Fukushima NPP. We studied about the applicability of soluble neutron absorber in terms of satulation solubility, corrosion of PCV/RPV, and boron injection facility.