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Title: Irradiation performance of HTGR fuel in HFIR experiment HRB-13

Abstract

Irradiation capsule HRB-13 tested High-Temperature Gas-Cooled Reactor (HTGR) fuel under accelerated conditions in the High Flux Isotope Reactor (HFIR) at ORNL. The ORNL part of the capsule was designed to provide definitive results on how variously misshapen kernels affect the irradiation performance of weak-acid-resin (WAR)-derived fissile fuel particles. Two batches of WAR fissile fuel particles were Triso-coated and shape-separated into four different fractions according to their deviation from spericity, which ranged from 9.6 to 29.7%. The fissile particles were irradiated for 7721 h. Heavy-metal burnups ranged from 80 to 82.5% FIMA (fraction of initial heavy-metal atoms). Fast neutron fluences (>0.18 MeV) ranged from 4.9 x 10/sup 25/ neutrons/m/sup 2/ to 8.5 x 10/sup 25/ neutrons/m/sup 2/. Postirradiation examination showed that the two batches of fissile particles contained chlorine, presumably introduced during deposition of the SiC coating.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
5647750
Report Number(s):
ORNL-5845
ON: DE82008143; TRN: 82-007053
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; COATED FUEL PARTICLES; PERFORMANCE TESTING; FUEL RODS; HTGR TYPE REACTORS; THORIUM OXIDES; PHYSICAL RADIATION EFFECTS; URANIUM CARBIDES; ACTINIDE COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; FUEL ELEMENTS; FUEL PARTICLES; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; OXIDES; OXYGEN COMPOUNDS; RADIATION EFFECTS; REACTOR COMPONENTS; REACTORS; TESTING; THORIUM COMPOUNDS; URANIUM COMPOUNDS; 210300* - Power Reactors, Nonbreeding, Graphite Moderated; 360206 - Ceramics, Cermets, & Refractories- Radiation Effects

Citation Formats

Tiegs, T N. Irradiation performance of HTGR fuel in HFIR experiment HRB-13. United States: N. p., 1982. Web. doi:10.2172/5647750.
Tiegs, T N. Irradiation performance of HTGR fuel in HFIR experiment HRB-13. United States. https://doi.org/10.2172/5647750
Tiegs, T N. 1982. "Irradiation performance of HTGR fuel in HFIR experiment HRB-13". United States. https://doi.org/10.2172/5647750. https://www.osti.gov/servlets/purl/5647750.
@article{osti_5647750,
title = {Irradiation performance of HTGR fuel in HFIR experiment HRB-13},
author = {Tiegs, T N},
abstractNote = {Irradiation capsule HRB-13 tested High-Temperature Gas-Cooled Reactor (HTGR) fuel under accelerated conditions in the High Flux Isotope Reactor (HFIR) at ORNL. The ORNL part of the capsule was designed to provide definitive results on how variously misshapen kernels affect the irradiation performance of weak-acid-resin (WAR)-derived fissile fuel particles. Two batches of WAR fissile fuel particles were Triso-coated and shape-separated into four different fractions according to their deviation from spericity, which ranged from 9.6 to 29.7%. The fissile particles were irradiated for 7721 h. Heavy-metal burnups ranged from 80 to 82.5% FIMA (fraction of initial heavy-metal atoms). Fast neutron fluences (>0.18 MeV) ranged from 4.9 x 10/sup 25/ neutrons/m/sup 2/ to 8.5 x 10/sup 25/ neutrons/m/sup 2/. Postirradiation examination showed that the two batches of fissile particles contained chlorine, presumably introduced during deposition of the SiC coating.},
doi = {10.2172/5647750},
url = {https://www.osti.gov/biblio/5647750}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {3}
}