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Title: Design of an Online Fission Gas Monitoring System for Post-irradiation Examination Heating Tests of Coated Fuel Particles for High-Temperature Gas-Cooled Reactors

A new Fission Gas Monitoring System (FGMS) has been designed at the Idaho National Laboratory (INL) for use of monitoring online fission gas-released during fuel heating tests. The FGMS will be used with the Fuel Accident Condition Simulator (FACS) at the Hot Fuels Examination Facility (HFEF) located at the Materials and Fuels Complex (MFC) within the INL campus. Preselected Advanced Gas Reactor (AGR) TRISO (Tri-isotropic) fuel compacts will undergo testing to assess the fission product retention characteristics under high temperature accident conditions. The FACS furnace will heat the fuel to temperatures up to 2,000ºC in a helium atmosphere. Released fission products such as Kr and Xe isotopes will be transported downstream to the FGMS where they will accumulate in cryogenically cooledcollection traps and monitored with High Purity Germanium (HPGe) detectors during the heating process. Special INL developed software will be used to monitor the accumulated fission products and will report data in near real-time. These data will then be reported in a form that can be readily available to the INL reporting database. This paper describes the details of the FGMS design, the control and acqusition software, system calibration, and the expected performance of the FGMS. Preliminary online data maymore » be available for presentation at the High Temperature Reactor (HTR) conference.« less
Authors:
Publication Date:
OSTI Identifier:
1009148
Report Number(s):
INL/CON-10-19967
TRN: US1101388
DOE Contract Number:
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: International Conference on High Temperature Reactor Technology HTR 2010,Prague, Czech Repub,10/18/2010,10/20/2010
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
DOE - NE
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ACCIDENTS; CALIBRATION; COATED FUEL PARTICLES; DESIGN; FISSION; FISSION PRODUCTS; FURNACES; GERMANIUM; HEATING; HELIUM; IDAHO; MONITORING; MONITORS; PERFORMANCE; POST-IRRADIATION EXAMINATION; REACTOR TECHNOLOGY; RETENTION; SIMULATORS; TESTING NGNP+TDO+VHTR+R&D+Fuel+AGR-1+AGR-2+Irradiation+Fis