United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for May 25, 2006

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PART 21 2006-0010 - UNAPPROVED WELD REPAIRS TO CASTINGS REPORTED BY SULZER PUMPS, INC

Licensee/Facility:

SULZER PUMPS, INC
SULZER PUMPS, INC
Chattanooga, Tennessee
Dockets:

License No:
Notification:

MR Number: H-2006-0011
Date: 05/20/2006


Source Document: Fax

Reviewer: SIELLER, NICOLE S

Discussion:

On May 7, 2006, during manufacturing, Sulzer Pumps, Inc. discovered weld repairs to two pump bowl castings provided by Stainless Steel Foundry and Engineering to be used in a replacement Essential Service Water Pump for the J. M. Farley Nuclear Power Plant.

The Sulzer Pumps procurement documents to the foundry required weld repairs to the castings be preceded by notification to Sulzer, submission for approval of both the proposed weld procedure (WPS) to be used, and the weld procedure qualification record (PQR). Weld maps were also required by their procurement documents.

Sulzer Pumps received material certifications from Stainless Steel Foundry and Engineering which certified no welding was performed to the Farley castings. However, during inspection processes, Sulzer discovered what appeared to be weld repairs. Subsequent investigation by Sulzer Pumps and foundry representatives concluded that undocumented and unapproved weld repairs were performed by the foundry.

Stainless Steel Foundry and Engineering previously provided impeller castings to Sulzer Pumps for orders that were shipped to Hatch and Indian Point. In light of the undocumented and unapproved weld repairs identified in the castings for the Farley order, the Hatch and Indian Point orders may also contain undocumented weld repairs.

All other castings from Stainless Steel Foundry and Engineering have been placed on hold and will be returned to the foundry.

The entire Part 21 report is available on the NRC public webpage at: http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2006/20060522en.html#en42591

Contacts:

Name Office Abbrev Phone No E-Mail
TABATABAI, OMID NRR (301) 415-6616 OTY@nrc.gov
SIELLER, NICOLE S NRR (301) 415-3139 NSS@nrc.gov
Page Last Reviewed/Updated Thursday, March 29, 2012