Fitness-for-service assessment of pressure tubes in CANDU nuclear generating stations

Conference · Wed Jan 01 04:00:00 EST 1992 · Transactions of the American Nuclear Society; (United States)

OSTI ID:6662390

Richinson, P J ^[1]; Ellis, P J; Scarth, D A ^[2]

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1. Atomic Energy of Canada Limited, Mississauga, Ontario (Canada)
2. Ontario Hydro, Toronto, Ontario (Canada)

Fitness-for-Service Guidelines have recently been developed to provide acceptance criteria and evaluation methods for assessment of the integrity of the Zr-2.5 Nb pressure tubes in operating Canada deuterium uranium (CANDU) reactors. The guidelines provide a methodology for the evaluation of specific conditions in a single tube, such as manufacturing and in-service generated flaws, hydride blisters formed at points of contact between a pressure tube and its calandria tube, and generic degradation of pressure tubes properties in service. The guidelines are divided into three sections. The first section describes the requirements that must be met to qualify the tubes for continued service. The second section provides the material properties data base information needed to carry out the assessments. The third section provides the technical basis for the acceptance criteria and evaluation procedures as well as justifications and descriptions of the data bases. The guidelines were issued to CANDU reactor operators for trial use and released to the Atomic Energy Control Board of Canada for review and comment in May 1991.

• OSTI ID: 6662390
• Report Number(s): CONF-921102--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 66
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210400* -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
ACCIDENTS
CALANDRIAS
CANDU TYPE REACTORS
CONTAINERS
COOLING SYSTEMS
CRACKS
DEFECTS
DESIGN BASIS ACCIDENTS
FRACTURE PROPERTIES
HEAVY WATER MODERATED REACTORS
MATERIALS
MECHANICAL PROPERTIES
PRESSURE TUBE REACTORS
PRESSURE TUBES
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR MATERIALS
REACTORS
SPECIFICATIONS
THERMAL REACTORS
TUBES