Operating plan for capsule HRB-21 irradiation

Technical Report · Fri Dec 01 04:00:00 EST 1989

OSTI ID:455547

Packan, N H; Kania, M J; Thoms, K R; Clemmer, E D

Irradiation capsule HRB-21 is a test capsule designed to provide modular high-temperature gas-cooled reactor (MHTGR) coated-particle fuel-performance data under test reactor conditions representative, at the end of the irradiation, of normal MHTGR operation. The irradiated fuel will be used in postirradiation tests to validate performance models simulating specific licensing basis events. The accelerated irradiation is to take place in the High-Flux Isotope Reactor at ORNL. This report identifies the procedures to be followed in carrying out the irradiation of HRB-21. Included is a description of the capsule with emphasis on the provisions for monitoring neutron fluence and controlling the irradiation temperature. The arrangements of the sweep gas circuit and gas analysis system are discussed, because on-line detection of fission gases released from individual failed fuel particles is a critical aspect of this test. The required data and measurements are specified, both at reactor startup and at particular intervals for the duration of the experiment. Documentation and quality assurance requirements are described, and the report concludes with a tentative schedule for the HRB-21 experiment. 7 refs., 7 figs., 1 tab.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Nuclear Energy, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 455547
• Report Number(s): DOE/HTGR--88370; ORNL/TM--11403; ON: DE97003970
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
COATED FUEL PARTICLES
DESIGN
DOCUMENTATION
FABRICATION
FORECASTING
GAS FLOW
HTGR TYPE REACTORS
IRRADIATION
IRRADIATION CAPSULES
MEASURING METHODS
MONITORING
QUALITY CONTROL
RADIATION HAZARDS
REACTOR VESSELS
REPORTING REQUIREMENTS
SURVEILLANCE
TEMPERATURE MEASUREMENT