GO2-16-128, Response to Request for Additional Information Related to Relief Request 4ISI-06 Regarding Code Case N-666-1

Response to Request for Additional Information Related to Relief Request 4ISI-06 Regarding Code Case N-666-1

ML16264A482
Person / Time
Site:	Columbia
Issue date:	09/20/2016
From:	Javorik A Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
4ISI-06, CAC MF7368, GO2-16-128, N-666-1
Download: ML16264A482 (2)

Text

Alex L. Javorik Vice President, Engineering ENERGY P.O. Box 968, Mail Drop PE04 Richland, WA 99352-0968 NORTHWEST Ph. 509-377-8555 F. 509-377-2354 aljavorik@energy-northwest.com 10 CFR 50.55a September 20, 2016 G02-16-128 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION RELATED TO RELIEF REQUEST 41Sl-06 REGARDING CODE CASE N-666-1

References:

1. Letter G02-16-027 from A. L. Javorik (Energy Northwest) to NRC: "Fourth Ten-Year Interval lnservice Inspection (ISi) Program Relief Request 41Sl-06," dated February 17, 2016 (ADAMS Accession No. ML16053A183)

2. E-mail from NRC to L. L. Williams (Energy Northwest), "Request for Additional Information, Columbia N-666-1 , Relief Request 41Sl-06, Use of Code Case N-666-1 on Socket Welded Connections CAC MF7368," dated August23,2016

Dear Sir or Madam:

By Reference 1, Energy Northwest submitted Relief Request 41Sl-06.

In Reference 2, the U.S. Nuclear Regulatory Commission (NRC) requested additional information related to Energy Northwest's submittal. The attachment to this letter provides the requested information.

No new commitments are being made by this letter or the attachment. If you should have any questions regarding this submittal, please contact Mr. R. M Garcia, Licensing Supervisor, at 509-377- 8463.

Executed this '). {) (!!: day of 5e-efeif£b~2016 Respectfully, Vice Presi

Attachment:

As stated.

cc: NRC Region IV Administrator NRC NRR Project Manager NRC Sr. Resident Inspector - 988C CD Sonoda - BPA/1399 (email)

WA Horin - Winston & Strawn (email)

GO2-16-128 Attachment Page 1 of 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION In response to the August 23, 2016, letter transmitted by e-mail, Energy Northwest submits the following response.

NRC Request 1:

To complete its review NRC staff requests the following additional information.

The NRC requests that the licensee verify that the code of construction for all components that the proposed alternative may be applied to require a surface examination (magnetic particle or liquid penetrant) of socket welds in Class 1 and 2, nominal pipe size 2 and smaller piping. If this is not the case, the NRC requests that the applicant modify its alternative to require a surface examination of all completed ASME [American Society of Mechanical Engineers] Code Class 1 and 2 socket weld overlays performed in accordance with the proposed alternative and provide the applicable acceptance criteria.

Energy Northwest Response to RAI 1:

Energy Northwest has reviewed that the code of construction, ASME Section III, 1971 Edition through Winter 1973 Addenda (Class 1and 2) and ASME Section III, 1974 Edition through Winter 1975 Addenda (Class 1 and 2) and verified that a surface examination (magnetic particle or liquid penetrant) of socket welds in Class 1 and 2 nominal pipe size 2 and smaller piping at Columbia Generating Station is required. Therefore, no modification to Relief Request 4ISI-06 is required.