FIELD TEST OF NEW TASTEX SYSTEM FOR PLUTONIUM PRODUCT VERIFICATION AT THE TOKAI REPROCESSING PLANT

Year
1988
Author(s)
M. HayashI - Power Reactor and Nuclear Fuel Development Corporation
S.-T. Hsue - Los Alamos National Laboratory
R. Gunnink - Los Alamos National Laboratory
Wayne Ruhter - Lawrence Livermore National Laboratory
Hisashi Ikeda - Power Reactor & Nuclear Fuel Development Corporation (PNC)
Yusuke Kuno - Power Reactor & Nuclear Fuel Development Corporation (PNC)
James K. Sprinkle - Los Alamos National Laboratory
K. SHIGEOKA - POWER REACTOR AND NUCLEAR FUEL DEVELOPMENT CORPORATION (PNC)
I. Wachi - Power Reactor & Nuclear Fuel Development Corporation (PNC)
Abstract
This report describes the field test results of the New TASTEX system. This system consisting of the high resolution gamma spectrometer and the k- edge densitometer can measure both isotopic abun- dances and concentration of plutonium simultane- ously. Entire system is controlled by the multi- channel analyser and a multi-user computer. The system was designed and built under the Japan Support Program for Agency Safeguards(JASPAS). The software of this system developed at LANL and LLNL has been installed in the system assembled at the Tokai reprocessing plant(TRP) in July 1985. In the course of campaigns from 1985 till 1988, field tests have been carried out on plutonium product solutions of TRP. The results of plutonium concen- tration and isotopic abundances obtained by the k- edge densitometer and the high resolution gamma spectrometer (HRGS) have been compared with those by controlled potential coulometer and mass spec- trometer respectively. Precision of plutonium determination with k-edge densitometer is esti- mated approximately 0.7% and 1.0% for the freshly processed plutonium and the aged plutonium respect- ively. The scatters in the relative differences between HRGS and the destructive analysis (DA) detected on the results of freshly processed plutonium sample were 1.6%, 0.4%, 0.5%, 1.1%, 8.0% for Pu-238, Pu-239, Pu-240, Pu-241, Pu-242 re- spectively, whereas those on the results of aged sample were 1.4%, 0.5%, 1.1%, 1.1% for Pu-238, Pu- 239, Pu-240, Pu-241 respectively.