GO2-13-062, Response to Request for Additional Information Regarding Proposed Alternative to Use Code Case N-795

Response to Request for Additional Information Regarding Proposed Alternative to Use Code Case N-795

ML13122A162
Person / Time
Site:	Columbia
Issue date:	04/23/2013
From:	Javorik A Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GO2-13-062, Code Case N-795
Download: ML13122A162 (4)

Text

~, a, Alex L Javoik Coumbia GenerawStation P.O. Box 968, PE04 o.-W Ep Richiand. WA 99352-0968 Ph. 509.3"7.855 IF. 509.377.2354 aordk@ enewgy-nofie0t.com 10 CFR 50.55a April 23,2013 G02-13-062 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50497 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED ALTERNATIVE TO USE CODE CASE N-795

References:

1) Letter, G02-12-171, dated November 27, 2012, AL Javorik (Energy Northwest) to NRC, "Proposed Alternative To Utilize Code Case N-795,

'Alternative Requirements For BWR Class 1 System Leakage Test Pressure Following Repair/Replacement Activities, Section Xl, Division 1'" (ADAMS Accession No. ML12340A066)

2) Letter dated March 14, 2013, NRC to ME Reddemann (Energy Northwest), "Columbia Generating Station - Request for Additional Information Regarding Proposed Alternative to Use Code Case N-795 (TAC No. MF0319)" (ADAMS Accession No. ML13071A322)

Dear Sir or Madam:

By Reference 1, Energy Northwest submitted a proposed alternative to utilize code case N-795. By Reference 2, the Nuclear Regulatory Commission (NRC) requested additional information related to the Energy Northwest submittal. Transmitted herewith in Attachment 1 is the Energy Northwest response to the request for additional information.

New regulatory commitments made in this submittal are identified in Attachment 2.

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

Respectfully, (7 A A.L. Javorik Vice President, Engineering

RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING REGARDING PROPOSED ALTERNATIVE TO USE CODE CASE N-7M Page 2 of 2 - Response to Request for Additional Information - Ust 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

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RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING REGARDING PROPOSED ALTERNATIVE TO USE CODE CASE N795 Attachment 1 Page I of I ftam 12ongo forhuftbal In9on, Uon

1. Code Case N-795 has not been accepted by the NRC staff in the latest revision to Regulatory Guide 1.147, "Inservece Inspection Code Case Acceptability, ASME Section Xl, Division 1." It Is the NRC staff's position that after pressurization, a hold time of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> for non-insulated components and 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for insulated components is required prior to conducting the required VT-2 visual examination.

If the shorter hold times specified InASME Code Case N-795 are to be used, please provide the technical basis for their use.

Energy Northwest agrees to the NRC staff's position that after pressurization, a I hour hold time for non-insulated components and 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> hold time for insulated components is required prior to conducting the required VT-2 visual examination. The shorter hold times specified in ASME Code Case N-795 shall not be used.

RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING REGARDING PROPOSED ALTERNATIVE TO USE CODE CASE N-79M Page 1 of I

~ist of -Com-a The following table identifies the regulatory commitments in this document. Any other statements in this submittal regarding intended or planned actions are provided for information purposes and are not considered to be regulatory commitments.

Commitment_ _Date Scheduled Completion Energy Northwest commits to the following exception when utilizing Code Case N-795:

After pressurization, a I hour hold time for non- Upon NRC approval insulated components and an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> hold time for insulated components is required prior to conducting the required VT-2 examination.