Spare-parts replacement and the commercial grade issues at Connecticut Yankee

Conference · Sun Jan 01 04:00:00 EST 1989 · Transactions of the American Nuclear Society, Supplement; (USA)

OSTI ID:5321733

Nichols, E M; Scott, D J; Maret, D L

Connecticut Yankee was designed and built according to code B31.1 of the American National Standards Institute for pressure piping and began commercial operations in 1968, 2 yr prior to 10CFR50 Appendix B of the Code of Federal Regulations. Therefore, at the time of commercial operation, the entire plant, except for several major primary plant components, met the current criteria for commercial grade items (CGIs). When spare parts were needed, 10CFR50 Appendix B and 10CFR21 requirements had to be backfitted onto suppliers who had not agreed to these requirements when supplying the original equipment. The problem of identifying original equipment manufacturers that would or would not accept these additional requirements was compounded at Connecticut Yankee by three related problems that also became apparent at approximately the same time: (1) The accuracy of the material, equipment, parts list (Q-list) was being questioned. (2) The use of existing spare parts bought without additional current quality assurance requirements and the adequacy of the existing inventory to support plant operations were being questioned. (3) The general industry concerns over use of GCIs in safety-related applications needed to be resolved. Connecticut Yankee management recognized the need to address each of these problems. Three specific actions were taken: (1) A Q-list upgrade program was funded. (2) A spare parts bill of materials (BOM) project was funded. (3) Connecticut Yankee's engineering department dedicated several engineers to address procurement issues and specifically to develop a CGI program.

• OSTI ID: 5321733
• Report Number(s): CONF-890833--
• Conference Information: Journal Name: Transactions of the American Nuclear Society, Supplement; (USA) Journal Volume: 59
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCURACY
CLASSIFICATION
CONNECTICUT YANKEE REACTOR
COOLING SYSTEMS
ECONOMICS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
ENGINEERED SAFETY SYSTEMS
ENRICHED URANIUM REACTORS
EPRI
EQUIPMENT
INVENTORIES
POWER REACTORS
PRIMARY COOLANT CIRCUITS
PWR TYPE REACTORS
QUALITY ASSURANCE
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS