Implementation of the Fissile Mass Flow Monitor Source Verification and Confirmation

Uckan, Taner¹  March-Leuba, Jose A¹  Powell, Danny H¹  Nelson, Dennis²  Radev, Radoslav³ 

[1] ORNL;Sandia National Laboratories (SNL);Lawrence Livermore National Laboratory (LLNL)

关键词: CAMERAS;    FISSILE MATERIALS;    FISSION;    FISSION PRODUCTS;    HALF-LIFE;    IMPLEMENTATION;    MANUFACTURERS;    MONITORING;    MONITORS;    NEUTRON DETECTION;    NEUTRON SOURCES;    NUCLEAR MATERIALS MANAGEMENT;    RADIATIONS;    REMOTE CONTROL;   

DOI  :  10.2172/1042716
RP-ID  :  ORNL/TM-2007/068
PID  :  OSTI ID: 1042716
Others  :  Other: NN3101000
Others  :  MDGA520
Others  :  TRN: US1203063

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

This report presents the verification procedure for neutron sources installed in U.S. Department of Energy equipment used to measure fissile material flow. The Fissile Mass Flow Monitor (FMFM) equipment determines the {sup 235}U fissile mass flow of UF{sub 6} gas streams by using {sup 252}Cf neutron sources for fission activation of the UF{sub 6} gas and by measuring the fission products in the flow. The {sup 252}Cf sources in each FMFM are typically replaced every 2 to 3 years due to their relatively short half-life ({approx} 2.65 years). During installation of the new FMFM sources, the source identity and neutronic characteristics provided by the manufacturer are verified with the following equipment: (1) a remote-control video television (RCTV) camera monitoring system is used to confirm the source identity, and (2) a neutron detection system (NDS) is used for source-strength confirmation. Use of the RCTV and NDS permits remote monitoring of the source replacement process and eliminates unnecessary radiation exposure. The RCTV, NDS, and the confirmation process are described in detail in this report.