Phased Array Ultrasonic Inspection of Feeder Welds – Regulatory Perspective
9th International Conference on CANDU® Maintenance - 2011 December 04-06

Presented at:
9th International Conference on CANDU® Maintenance
2011 December 04-06
Toronto, Canada
Session Title:
Inspection Tools Session B3

Blair Carroll (Canadian Nuclear Safety Commission)
Ken Kirkhope (Canadian Nuclear Safety Commission)
Lawrence Colligan (Canadian Nuclear Safety Commission)
Burton Valpy (Canadian Nuclear Safety Commission)
Jeff Stevenson (Canadian Nuclear Safety Commission)


The Canadian Nuclear Safety Commission has approved the application of Phased Array Ultrasonic Testing (PAUT) in lieu of Radiographic Testing for feeder piping replacement at the Point Lepreau and Bruce A Units 1 and 2 refurbishment projects.  Background information regarding the principles and elements of the CNSC regulatory approach for the acceptance of PAUT for feeder installation will be discussed, addressing quality management and regulatory oversight activities focused on inspection reliability and dose reduction.  CNSC staff’s views for future direction on the application of PAUT in lieu of RT in regulatory framework and codes and standards are also discussed.

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