ML13109A005

Relief Request 3IS1-13 for Temporary Non-Code Repair of Reactor Water Cleanup System Piping - Comment Change

ML13109A005
Person / Time
Site:	Columbia
Issue date:	04/06/2013
From:	Javorik A Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
G02-13-056
Download: ML13109A005 (2)

Text

Alex L. Javorik ENERGY Columbia Generating Station P.O. Box 968, PE04 NORTHWEST Richland, WA 99352-0968 Ph. 509.377.8555 1F. 509.377.2354 aljavorik@ energy-northwest.com April 6, 2013 G02-13-056 10 CFR 50.55a U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 RELIEF REQUEST 31S1-13 FOR TEMPORARY NON-CODE REPAIR OF REACTOR WATER CLEANUP SYSTEM PIPING - COMMITMENT CHANGE

Reference:

Letter G02-13-055, AL Javorik (Energy Northwest) to NRC, "Relief Request IS13-13 for Temporary Non-Code Repair of Reactor Water Cleanup System Piping," dated April 5, 2013

Dear Sir or Madam:

In the referenced letter, Energy Northwest provided a relief request to perform a temporary non-code repair of reactor water cleanup system piping. This letter revises commitments made in the referenced letter. Attachment 1 contains a revised list of commitments.

If you have any questions or require additional information regarding this matter, please contact Ms. LL Williams, Licensing Supervisor, at (509) 377-8148.

Respectfully, A.L. Javori Vice President, Engineering : List of Commitments cc: NRC RIV Regional Administrator NRC NRR Project Manager NRC Senior Resident Inspector/988C AJ Rapacz - BPA/1 399 WA Horin - Winston & Strawn D4-

RELIEF REQUEST 31SI-13 FOR TEMPORARY NON-CODE REPAIR OF REACTOR WATER CLEANUP SYSTEM PIPING - COMMITMENT CHANGE Page 1 of 1 List of Commitments The following table is a revision to regulatory commitments identified in the referenced letter.

Scheduled Completion Commitment Date The post-maintenance testing will include a VT-2 Prior to return of RWCU to examination, service Energy Northwest will perform an augmented inspection via UT or RT to assess the overall degradation of the affected system. The inspection of at least 10 susceptible Prior to startup from (and accessible) locations for high energy lines will be Refueling Outage 21 performed. Locations that were re-welded during initial (June 2013) fabrication of the RWCU regenerative heat exchanger skid will be included in this augmented inspection.

Energy Northwest will install a camera in the RWCU heat exchanger room to provide leak monitoring until the outage. April 8, 2013 The non-code repair will be replaced with an ASME Code Prior to startup from repair. Refueling Outage 21 (June 2013)

Energy Northwest will perform a surface examination of the Prior to return of RWCU to fillet weld associated with the repair. service Energy Northwest will obtain additional wall thickness Prior to return of RWCU to measurements along the circumference of the elbow service downstream of the weld.

Reference:

Letter G02-13-055, AL Javonk (Energy Northwest) to NRC, "Relief Request IS13-13 for Temporary Non-Code Repair of Reactor Water Cleanup System Piping," dated April 5, 2013