The discovery of primary water stress corrosion cracking (PWSCC) in control rod drive mechanisms (CRDM) penetrations in U.S. and European plants prompted the U.S. nuclear industry to focus considerable effort on development and implementation of effective inspection methods. In particular, cracking was discovered in butt welds connecting reactor vessel nozzles to main coolant piping and in control rod drive mechanism (CRDM) head penetration base material and attachment welds. The EPRI Materials Reliability Program (EPRI-MRP) formed an Inspection Committee to address development of industry guidance for inspection of these components, development of effective non-destructive examination (NDE) methods, and demonstration of inspection processes. This paper discusses the MRP activities pertaining to inspection of CRDM penetrations. Results of demonstrations and field inspections conducted will also be summarized.
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10th International Conference on Nuclear Engineering
April 14–18, 2002
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-3598-7
PROCEEDINGS PAPER
U.S. Industry Activities on Inspection of CRDM Penetrations
Kim Kietzman,
Kim Kietzman
Electric Power Research Institute, Charlotte, NC
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Frank Ammirato
Frank Ammirato
Electric Power Research Institute, Charlotte, NC
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Tom Alley
Duke Energy Company, Charlotte, NC
Kim Kietzman
Electric Power Research Institute, Charlotte, NC
Frank Ammirato
Electric Power Research Institute, Charlotte, NC
Paper No:
ICONE10-22477, pp. 545-551; 7 pages
Published Online:
March 4, 2009
Citation
Alley, T, Kietzman, K, & Ammirato, F. "U.S. Industry Activities on Inspection of CRDM Penetrations." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 4. Arlington, Virginia, USA. April 14–18, 2002. pp. 545-551. ASME. https://doi.org/10.1115/ICONE10-22477
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