Prediction of failure pressure and leak rate of stress corrosion.
An ''equivalent rectangular crack'' approach was employed to predict rupture pressures and leak rates through laboratory generated stress corrosion cracks and steam generator tubes removed from the McGuire Nuclear Station. Specimen flaws were sized by post-test fractography in addition to a pre-test advanced eddy current technique. The predicted and observed test data on rupture and leak rate are compared. In general, the test failure pressures and leak rates are closer to those predicted on the basis of fractography than on nondestructive evaluation (NDE). However, the predictions based on NDE results are encouraging, particularly because they have the potential to determine a more detailed geometry of ligamented cracks, from which failure pressure and leak rate can be more accurately predicted. One test specimen displayed a time-dependent increase of leak rate under constant pressure.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 797901
- Report Number(s):
- ANL/ET/CP-108005; TRN: US0202963
- Resource Relation:
- Conference: CNS International Steam Generator Conference, Toronto, Ontario (CA), 05/05/2002--05/08/2002; Other Information: PBD: 24 Jun 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
Steam generator tube integrity program: Annual report, August 1995--September 1996. Volume 2
Predicting Rupture Pressure and Leak Rate of Alloy 600 U-bend Tubes with PWSCC and Comparing with Test Results (Technical Letter Report)