Published October 2010 | Version v1
Journal article Metadata-only

Failure and its mechanism of LWR and research reactor fuels

Creators

  • 1. Japan Atomic Energy Agency, Policy Planning and Administration Department, Takasaki, Gunma (Japan)

Description

A failure of LWR fuel under a normal operating condition up to the burn-up of 20 MWd/kgU was PCI-SCC. A failure of LWR fuel under RIA occurred at 260 cal/g·fuel for the fresh fuel and 118 cal/g·fuel for pre-irradiated PWR fuel to 42 MWd/kgU. The mechanism was the melt-brittle for the former and strong PCI combined with transient FGR for the latter. The silicide fuel failed by the through-plate cracking, where the tensile thermal stress governed by temperature drop (>94deg.C) and time to quench (<0.13s) is the principal mechanism. (author)

Additional details

Publishing Information

Journal Title
International Electronic Journal of Nuclear Safety and Simulation
Journal Volume
1
Journal Issue
3
Journal Page Range
p. 246-257
ISSN
2185-0577

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
43064999
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
CRACKS; F CODES; FAILURES; FISSION PRODUCT RELEASE; FUEL-CLADDING INTERACTIONS; HBWR REACTOR; NSRR REACTOR; NUCLEAR FUELS; REACTIVITY INSERTIONS; ROD EJECTION ACCIDENTS; THERMAL STRESSES; URANIUM SILICIDES
Descriptors DEC
ACCIDENTS; ACTINIDE COMPOUNDS; BHWR TYPE REACTORS; COMPUTER CODES; ENERGY SOURCES; ENRICHED URANIUM REACTORS; EXPERIMENTAL REACTORS; FUELS; HEAVY WATER COOLED REACTORS; HEAVY WATER MODERATED REACTORS; HOMOGENEOUS REACTORS; HYDRIDE MODERATED REACTORS; MATERIALS; MIXED SPECTRUM REACTORS; POWER REACTORS; PULSED REACTORS; REACTOR ACCIDENTS; REACTOR MATERIALS; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SILICIDES; SILICON COMPOUNDS; SOLID HOMOGENEOUS REACTORS; STRESSES; TANK TYPE REACTORS; THERMAL REACTORS; URANIUM COMPOUNDS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
12 refs., 18 figs., 4 tabs.