Published June 1975 | Version v1
Report Metadata-only

Operating experience with failed fuel detection and location in Ontario Hydro

Creators

  • 1. Hydro-Electric Power Commission of Ontario, Pickering (Canada). Pickering Generating Station

Description

Fuel defects in the CANDU type reactor, as exemplified by experience at Pickering NGS, are believed to be caused by stress corrosion of the zircaloy sheath, associated with rapid bundle power increases to levels above previous steady-state levels. Incorrect sequencing of adjuster rod withdrawal and localized refuelling to replace defected bundles cause just such conditions. Lubrication of the UO2 pellet with graphite has produced a fuel highly resistant to this failure mode. Defected fuel is located by hand scanning of exit channel feeders for gamma signal during reactor shutdown. (E.C.B.)

Additional details

Publishing Information

Imprint Title
Proceedings of the IAEA specialists' meeting on in-core instrumentation and failed fuel detection and location, Mississauga, Ontario, Canada, May 13-15, 1974
Imprint Pagination
p. 251-258.
Report number
AECL--5124

Conference

Title
IAEA specialists' meeting on in-core instrumentation and failed fuel detection and location.
Dates
13 May 1974.
Place
Mississauga, Ontario, Canada.

INIS

Country of Publication
Canada
Country of Input or Organization
Canada
INIS RN
7245180
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CANDU TYPE REACTORS; FAILED ELEMENT DETECTION; FUEL ELEMENT FAILURE; FUEL MANAGEMENT
Descriptors DEC
ACCIDENTS; HEAVY WATER MODERATED REACTORS; POWER REACTORS; PRESSURE TUBE REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL REACTORS