ML11195A240

Request for Additional Information for the Review of the Columbia Generating Station, License Renewal Application Regarding High Voltage Porcelain Insulators

ML11195A240
Person / Time
Site:	Columbia
Issue date:	07/19/2011
From:	Cunanan A License Renewal Projects Branch 1
To:	Swank D Energy Northwest
Cunanan A
References
TAC ME3058
Download: ML11195A240 (4)

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July 19, 2011

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Mr. David A. Swank, Vice President of Engineering Columbia Generating Station Energy Northwest MD PE23 P.O. Box 968 Richland, WA 99352

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION REGARDING HIGH VOLTAGE PORCELAIN INSULATORS (TAC NO. ME3058)

Dear Mr. Swank:

By letter dated January 19, 2010, Energy Northwest submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54, to renew operating license NPF-21 for Columbia Generating Station, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review. Further requests for additional information may be issued in the future.

Items in the enclosure were discussed with Abbas Mostala and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-3897 or bye-mail at arthur.cunanan@nrc.gov.

Sincerely,

~~

Arthur D. Cunanan, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-397

Enclosure:

As stated cc w/encl: Listserv

COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION RAI B.2.31-1

Background:

During the Columbia License Renewal Inspection that concluded on November 4,2010, the U.S. Nuclear Regulatory Commission issued a License Renewal Inspection Report dated December 17,2010. In the report, the staff noted that Energy Northwest (the applicant) appropriately included the in-scope 115 kV station post insulators into the High-Voltage Porcelain Insulators AMP because they provided power required during a station blackout and would be subject to hard water deposits caused by spray drift from the cooling towers.

Issue:

The inspection team determined that the applicant did not include the in-scope high-voltage station post insulators at the 230 kV ASHE A809 Breaker located in the Ashe Substation in the High-Voltage Porcelain Insulators AMP, even though this breaker provided an alternate path of power during a station blackout. The applicant stated that it did not include these station post insulators because it concluded that the hard water deposits spray drift phenomenon would not occur due to the significant distance between the circulating water system cooling towers and Ashe Substation.

The applicant could not provide any other information to support their conclusions and issued Action Requests 228661 and 228673 to resolve the concern. The applicant indicated that it would either establish appropriate coating or cleaning tasks or develop information that would demonstrate why the phenomenon would not affect the 230 kV switchyard station post insulators.

Request:

Explain why the high-voltage post insulators at the 230kV ASHE A809 Breaker located in the ASHE Substation are not subject to circulating water system cooling tower spray drift and do not require a coating or cleaning aging management program.

ENCLOSURE

July 19, 2011 Mr. David A. Swank, Vice President of Engineering Columbia Generating Station Energy Northwest MD PE23 P.O. Box 968 Richland, WA 99352

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION REGARDING HIGH VOLTAGE PORCELAIN INSULATORS (TAC NO. ME3058)

Dear Mr. Swank:

By letter dated January 19, 2010, Energy Northwest submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54, to renew operating license NPF-21 for Columbia Generating Station, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review. Further requests for additional information may be issued in the future.

Items in the enclosure were discussed with Abbas Mostala and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-3897 or bye-mail at arthur.cunanan@nrc.gov.

Sincerely, IRA!

Arthur D. Cunanan, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-397

Enclosure:

As stated cc w/encl: Listserv DISTRIBUTION:

See next page ADAMS Accession No.: ML11195A240

• concurrence via e-mail OFFICE LA: DLRIRPB 1 PM: DLR/RPB1 BC: DLRIRPB 1 LA: DLR/RPB1 PM: DLRIRPB 1

.NAME SFigueroa ACunanan DMorey SFigueroa ACunanan DATE 07/18/2011 07/18/2011 07/18/2011 07/19/2011 07/19/2011

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II OFFICIAL RECORD COpy

Letter to David A. Swank from Arthur D. Cunanan dated July 19, 2011

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION REGARDING HIGH VOLTAGE PORCELAIN INSULATORS (TAC NO. ME3058)

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