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31 March 1998 SAFT inspections for developing empirical database of fabrication flaws in nuclear reactor pressure vessels
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Abstract
The Pacific Northwest National Laboratory (PNNL) is developing a methodology for estimating the size and density distribution of fabrication flaws in U.S. nuclear reactor pressure vessels. This involves the nondestructive evaluation (NDE) of reactor pressure vessel materials and the destructive validation of the flaws found. NDE has been performed on reactor pressure vessel material made by Babcock & Wilcox and Combustion Engineering. A metallographic analysis is being performed to validate the flaw density and size distributions estimated from the 2500 indications of fabrication flaws that were detected and characterized in the very sensitive SAFT-UT (synthetic aperture focusing technique for ultrasonic testing) inspection data from the Pressure Vessel Research User Facility (PVRUF) vessel at Oak Ridge National Laboratory. Research plans are also described for expanding the work to include other reactor pressure vessel materials.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Steven R. Doctor, George J. Schuster, and Allan F. Pardini "SAFT inspections for developing empirical database of fabrication flaws in nuclear reactor pressure vessels", Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); https://doi.org/10.1117/12.301507
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