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Title: Piping inspection round robin

The piping inspection round robin was conducted in 1981 at the Pacific Northwest National Laboratory (PNNL) to quantify the capability of ultrasonics for inservice inspection and to address some aspects of reliability for this type of nondestructive evaluation (NDE). The round robin measured the crack detection capabilities of seven field inspection teams who employed procedures that met or exceeded the 1977 edition through the 1978 addenda of the American Society of Mechanical Engineers (ASME) Section 11 Code requirements. Three different types of materials were employed in the study (cast stainless steel, clad ferritic, and wrought stainless steel), and two different types of flaws were implanted into the specimens (intergranular stress corrosion cracks (IGSCCs) and thermal fatigue cracks (TFCs)). When considering near-side inspection, far-side inspection, and false call rate, the overall performance was found to be best in clad ferritic, less effective in wrought stainless steel and the worst in cast stainless steel. Depth sizing performance showed little correlation with the true crack depths.
Authors:
;  [1]
  1. Pacific Northwest National Lab., Richland, WA (United States)
Publication Date:
OSTI Identifier:
219360
Report Number(s):
NUREG/CR--5068; PNNL--10475
ON: TI96009923; TRN: 96:011337
DOE Contract Number:
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Apr 1996
Research Org:
Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering Technology; Pacific Northwest National Lab., Richland, WA (United States)
Sponsoring Org:
Nuclear Regulatory Commission, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; PIPES; ULTRASONIC TESTING; PERFORMANCE; WATER COOLED REACTORS; STEELS; IN-SERVICE INSPECTION; CRACK PROPAGATION; CRACKS; RECOMMENDATIONS; ERRORS; PROTECTIVE COATINGS; FERRITIC STEELS; CARBON STEELS; STAINLESS STEELS; DATA