Determination of Pu content in a Spent Fuel Assembly by Measuring Passive Total Neutron count rate and Multiplication with the Differential Die-Away Instrument

Conference · Fri Jul 13 00:00:00 EDT 2012

OSTI ID:1046509

Henzl, Vladimir ^[1]; Croft, Stephen ^[1]; Swinhoe, Martyn T ^[1]; Tobin, Stephen J ^[1]

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1. Los Alamos National Laboratory

Inspired by approach of Bignan and Martin-Didier (ESARDA 1991) we introduce novel (instrument independent) approach based on multiplication and passive neutron. Based on simulations of SFL-1 the accuracy of determination of {sup tot}Pu content with new approach is {approx}1.3-1.5%. Method applicable for DDA instrument, since it can measure both multiplication and passive neutron count rate. Comparison of pro's & con's of measuring/determining of {sup 239}Pu{sub eff} and {sup tot}Pu suggests a potential for enhanced diversion detection sensitivity.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/LANL
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1046509
• Report Number(s): LA-UR-12-22979; TRN: US1203779
• Resource Relation: Conference: INMM 53rd Annual Meeting ; 2012-07-15 - 2012-07-19 ; Orlando, Florida, United States
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ACCURACY
DETECTION
NEUTRONS
SENSITIVITY
SPENT FUELS
PLUTONIUM