Mechanical fracture predictions for sensitized stainless steel piping with circumferential cracks. Final report. [SS-304 welds]

Technical Report · Wed Sep 01 00:00:00 EDT 1976

OSTI ID:7223508

Oldberg, T

Circumferential intergranular stress corrosion cracks have been discovered in the heat-affected zones of girth welds in the Type 304 stainless steel recirculation bypass piping systems of several boiling water reactor (BWR) plants. To determine the residual strength of the cracked pipe, an integrated program of small-scale laboratory experiments, full-scale pipe tests, finite-element computation, and a mechanical failure analysis was conducted. After investigating several candidates, the work has shown that a simple plastic collapse criterion can most effectively be used to predict failure in Type 304 stainless steel pipes with circumferential cracks. Recommendations for extending the work to permit more accurate and more widely applicable predictions of the margin of safety for arbitrarily shaped cracks in pipes are also given in the report.

• Research Organization: Battelle Columbus Labs., OH (USA)
• OSTI ID: 7223508
• Report Number(s): PB-260561; TRN: 77-009564
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
BWR TYPE REACTORS
PIPES
FAILURES
STAINLESS STEEL-304
STRESS CORROSION
CRACKS
FINITE ELEMENT METHOD
MATHEMATICAL MODELS
WELDED JOINTS
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
NICKEL ALLOYS
NUMERICAL SOLUTION
REACTORS
STAINLESS STEELS
STEELS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210100* - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
360105 - Metals & Alloys- Corrosion & Erosion