[3I13-15] Preparedness for Criticality Accidents

[3I15] Preparedness for criticality accidents postulated in Rokkasho reprocessing plant

(3)Analytical Method of m-carborane as the Neutron Absorber used in Organic Solvent Phase

*Miki Kusumoto¹, Kimie Sakamoto¹, Yuko Yamada¹, Yuuma Abe², Yuuki Satou², Kiyoshi Anzai², Tatsuya Horimai² (1. FUJIFILM Wako Pure Chemical Corporation, 2. JNFL)

Keywords:m-carborane, neutron absorber, quantitative determination, SI units-traceable, qNMR

At the Rokkasho reprocessing plant, in preparation for the criticality accident in organic phase, m-carborane is deployed as the neutron absorber. There are few data about chemical properties, impurities and stability of m-carborane.
We analyzed m-carborane by the method secured traceability to SI units.
Quantitative-NMR (qNMR) method is also adopted for the determination of impurities.