Burnup Measurement of Spent Fuel Assembly by CZT-based Gamma-Ray Spectroscopy for Input Nuclear Material Accountability of Pyroprocessing

Input nuclear material accountability is crucial for a pyroprocessing facility safeguards. Until a direct Pu measurement technique is established, an indirect method based on code calculations with burnup measurement and neutron counting for 244 Cm could be a practical option. Burnup can be determin...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on nuclear science 2014-08, Vol.61 (4), p.2169-2174
Main Authors: Seo, Hee, Oh, Jong-Myeong, Shin, Hee-Sung, Kim, Ho-Dong, Lee, Seung Kyu, Lee, Hyun Su, Park, Se-Hwan
Format: Article
Language:English
Subjects:
Assembly
Burnup
CdZeTe detector
Computer simulation
Detectors
Energy measurement
Fuels
Gamma rays
Materials
Mathematical analysis
Measurement techniques
Measurement uncertainty
Monte Carlo methods
Monte Carlo simulation
Nuclear engineering
pyroprocessing
Spectroscopy
spent fuel assembly
Underwater
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Input nuclear material accountability is crucial for a pyroprocessing facility safeguards. Until a direct Pu measurement technique is established, an indirect method based on code calculations with burnup measurement and neutron counting for 244 Cm could be a practical option. Burnup can be determined by destructive analysis (DA) for final dispositive accuracy or by nondestructive assay (NDA) for near-real time accountancy. In the present study, an underwater burnup measurement system based on gamma-ray spectroscopy with the CZT detector was developed and tested on a spent fuel assembly. Burnup was determined according to the 134 Cs/ 137 Cs activity ratio with efficiency correction by Geant4 Monte Carlo simulations. The activity ratio as a function of burnup was obtained by ORIGEN calculations. The measured burnup error was 8.6%, which was within the measurement uncertainty. It is expected that the underwater burnup measurement system could fulfill an important role as a means of near-real time accountancy at a future pyroprocessing facility.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2014.2319331