Stainless Steel Round Robin Test: Centrifugally cast stainless steel screening phase

Technical Report · Thu Oct 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/5913079· OSTI ID:5913079

Bates, D J; Doctor, S R; Heasler, P G; Burck, E

This report presents the results of the Centrifugally Cast Stainless Steel Round Robin Test (CCSSRRT). The CCSSRRT is the first phase of an effort to investigate and improve the capability and reliability of NDE inspections of light water reactor piping systems. This phase was a screening test to identify the most promising procedures presently available for CCSS. The next phase will be an in-depth program to evaluate the capability and reliability of inservice inspections (ISI) for piping. In the CCSSRRT, 15 centrifugally cast stainless steel pipe sections containing welds and laboratory-grown thermal fatigue cracks in both columnar and equiaxed base material were used. These pipe specimens were inspected by a total of 18 teams from Europe and the United States using a variety of NDE techniques, mostly ultrasonic (UT). The inspections were carried out at the team's facilities and included inspections from both sides of the weld and inspections restricted to one side of the weld. The results of the CCSSRRT make it apparent that a more detailed study on the capability and reliability of procedures to inspect stainless steel materials is needed to better understand the specific material and flaw properties and how they affect the outcome of an inspection.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA); Nuclear Regulatory Commission, Washington, DC (USA). Div. of Engineering
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5913079
• Report Number(s): NUREG/CR-4970; PNL-6266; ON: DE88001701
• Country of Publication: United States
• Language: English

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42 ENGINEERING
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ACOUSTIC TESTING
ALLOYS
BWR TYPE REACTORS
CASTING
CHROMIUM ALLOYS
COOLING SYSTEMS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
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FABRICATION
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IRON ALLOYS
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JOINTS
MATERIALS TESTING
MECHANICAL PROPERTIES
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PIPES
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
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STAINLESS STEELS
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THERMAL FATIGUE
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WELDED JOINTS