Overview of the U.S. inspection capability demonstration program for CRDM penetrations

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:72574

Melton, M ^[1]; Whitaker, D ^[2]; Ammirato, F ^[3]; Spry, T ^[4]; Pathania, R ^[5]

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1. Arizona Public Service, Phoenix, AZ (United States)
2. Duke Power Co., Charlotte, NC (United States)
3. Electric Power Research Inst., Charlotte, NC (United States). Nondestructive Evaluation Center
4. Commonwealth Edison Co., Downers Grove, IL (United States)
5. Electric Power Research Inst., Palo Alto, CA (United States)

The US PWR Owners have developed a coordinated program to demonstrate the effectiveness of procedures for inspection of the Control Rod Drive Mechanism (CRDM) nozzle penetrations. The purpose of the inspections is to detect inside surface Primary Water Stress Corrosion Cracking (PWSCC). Reactor vessel manufacturers, PWR Owners Groups, and EPRI are participating in this cooperative program. Flaw detection, sizing, and location capability will be assessed in the program using realistic full-scale mockups containing intentional defects. The program is expected to be completed by January 1, 1994 and be available for qualification work at that time. The demonstration program is scheduled to become operational in 1993 to support 1994 and future inspections.

• OSTI ID: 72574
• Report Number(s): CONF-931061--; ISBN 0-87170-506-0
• Country of Publication: United States
• Language: English

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