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Proceedings Paper

SAFT inspections for developing empirical database of fabrication flaws in nuclear reactor pressure vessels
Author(s): Steven R. Doctor; George J. Schuster; Allan F. Pardini
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Paper 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.

Paper Details

Date Published: 31 March 1998
PDF: 10 pages
Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); doi: 10.1117/12.301507
Show Author Affiliations
Steven R. Doctor, Pacific Northwest National Lab. (United States)
George J. Schuster, Pacific Northwest National Lab. (United States)
Allan F. Pardini, Pacific Northwest National Lab. (United States)

Published in SPIE Proceedings Vol. 3396:
Nondestructive Evaluation of Materials and Composites II
Steven R. Doctor; Carol A. Nove; George Y. Baaklini, Editor(s)

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