Steam Generator Tube Integrity Program/Steam Generator Group Project
- Pacific Northwest Lab., Richland, WA (USA)
The Steam Generator Tube Integrity Program/Steam Generator Group Project was a three-phase program conducted for the US Nuclear Regulatory Commission (NRC) by Pacific Northwest Laboratory. The main goal of the program was to provide the NRC with validated information on the reliability of nondestructive examination techniques to defects and size flaws in steam generator tubing and to determine the remaining integrity of service-degraded tubing. This report summarizes the findings of more than eleven years of research activity on steam generator tube integrity and inspection issues. The results of the Phase 1 pressure tests on mechanically-flawed steam generator tubing are presented. In addition, the laboratory eddy current (EC) sizing results on those tubes are summarized. A discussion of Phase 2 pressure test results on chemically-degraded tubes is given, along with a brief overview of leak-rate data for tubes with laboratory-produced axial or circumferential stress-corrosion cracks (SCC). Comparisons with a simple analytical leak rate model are discussed. Laboratory EC estimates of flaw size in Phase 2 specimens are described. To supplement the laboratory EC data and obtain an estimate of EC reliability to detect and size SCC, results of a mini-round robin involving several firms that routinely perform field inservice inspections are presented.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (USA). Div. of Engineering; Pacific Northwest Lab., Richland, WA (USA)
- Sponsoring Organization:
- NRC
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6853141
- Report Number(s):
- NUREG/CR-5117; ON: TI90014408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Steam generator tube integrity program: Annual report, August 1995--September 1996. Volume 2
Steam generator tube integrity program. Semiannual report, August 1995--March 1996
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210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BOILERS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CORROSION
CRACKS
DOCUMENT TYPES
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
ENRICHED URANIUM REACTORS
IN-SERVICE INSPECTION
INSPECTION
INTERGRANULAR CORROSION
MATERIALS TESTING
NONDESTRUCTIVE ANALYSIS
NONDESTRUCTIVE TESTING
POWER REACTORS
PROGRESS REPORT
PWR TYPE REACTORS
RADIATION PROTECTION
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RECOMMENDATIONS
RELIABILITY
SAMPLING
STEAM GENERATORS
STRESS CORROSION
SURRY-2 REACTOR
TESTING
THERMAL REACTORS
TUBES
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS