View More View Less
  • 1 Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085 India
  • | 2 Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085 India
Restricted access

Abstract  

The high level waste (HLW) generated from the reprocessing of the spent fuel of pressurized heavy water reactor has been characterized for the minor actinides. The radiation dose of the waste solution was reduced by radiochemical separation of cesium from HLW by solvent extraction with chlorinated cobalt dicarbollide dissolved in 20% nitrobenzene in xylene. Minor actinides (Np, Pu, Am, Cm) in the high level waste were assayed by alpha spectrometry following radiochemical separation. The gross alpha activity determined by liquid scintillation agrees well (within 10%) with the cumulative quantities of actinides determined by alpha spectrometry.