ML11220A010

February 3, 2011, Summary of Telephone Conference Call Held Between NRC and Energy Northwest, Concerning the Responses to the RAI Pertaining to the Columbia Generating Station, LRA

ML11220A010
Person / Time
Site:	Columbia
Issue date:	08/11/2011
From:	Cunanan A License Renewal Projects Branch 1
To:
Cunanan A
References
TAC ME3058
Download: ML11220A010 (6)

Text

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NUCLEAR REGULATORY COMMISSION

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August 11, 2011

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• • • • i' APPLICANT: Energy Northwest FACILITY:

Columbia Generating Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON FEBRUARY 3,2011, BElWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST, CONCERNING THE RESPONSES TO THE REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION (TAC NO. ME3058)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Energy Northwest (the applicant), held a telephone conference call on February 3, 2011, to discuss and clarify the responses to the NRC's request for additional information (RAI) concerning the Columbia Generating Station, license renewal application. provides a listing of the participants and Enclosure 2 contains a listing of the responses to the RAls discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

~~

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

Enclosures:

As stated cc w/encls: Listserv

TELEPHONE CONFERENCE CALL COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION PARTICIPANTS:

Arthur Cunanan Abdul Sheikh Christopher Sydnor John Twomey Marsha Eades Douglas Ramey LIST OF PARTICIPANTS February 3, 2011 AFFILIATIONS:

U.S. Nuclear Regulatory Commission (NRC)

NRC NRC Energy Northwest (EN)

EN EN ENCLOSURE 1

TELEPHONE CONFERENCE CALL COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATIONS February 3, 2011 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Energy Northwest, held telephone conference calls on February 3, 2011, to discuss the following responses to the request for additional information (RAI) concerning the Columbia Generating Station (CGS) license renewal application (LRA).

Response to follow up RAI 8.2.35-2 Discussion: The staff discussed clarifying the inspection frequency of the Service Water (SW) spray header support.

The applicant clarified that the spray pond circular header supports in LRA Table 3.5.2-3, line items 4 and 5 is the SW spray header support and credits both the Structures Monitoring Program (SMP) and the Inservice Inspection Program-IWF (lSI-IWF) for the portions of the ring header above and below the water line. The portion above the water line is defined by the environment air-outdoor (line item 4) and the portion below the water line is defined by the environment raw water (line item 5). The applicant also clarified that the Spray pond circular header is treated as a single item (support) and both the above and below water line portions are inspected under ISI-IWF on a ten year frequency per the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. The inspection of the above water line portion is performed by a qualified civil engineer on a four year frequency under the SMP and is credited in addition to the inspection performed under ISI-IWF.

The staff notes that other RAI responses submitted by the applicant require cross reference of the LRA and the RAI responses submitted on the docket in order to adequately answer the question.

The staff understands the applicant's response and no additional RAls are required.

ENCLOSURE 2

- 2 Response to RAI B.2.8*1 through RAI B.2.8*5 Discussion: The staff discussed Generic Letter 88-1 (GL 88-1) and inspection schedules for boiling water reactor (BWR) piping weldments, specifically the stainless steel recirculation system piping-to-valve weld 20RRC(6)-8 for the period of 1996 through 2001.

The applicant discussed following the requirements of GL 88-1. The applicant confirmed that it conducted an inspection of the 20RRC(6)-8 weld in 1996, resulting in no change in flaw size indicated, and therefore changed the weld category from Category F to Category E. Based on Category E schedule requirements in GL 88-01 (every two refueling cycles) the applicant conducted inspections of the subject weld in 1998 and 2001 with no indications of change. The applicant concluded in 2001 that the flaw was not due to intergranular stress corrosion cracking (IGSCC) and therefore was due to a fabrication defect. The applicant changed the weld category again from Category E to Category B the same year. The applicant continues to follow GL 88-01 requirements with an inspection of the subject weld scheduled for mid-2011.

The staff understands the applicant's response and no additional RAls are required.

August 11, 2011 APPLICANT: Energy Northwest FACILITY:

Columbia Generating Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON FEBRUARY 3, 2011, BETWEEN THE U. S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST, CONCERNING THE RESPONSES TO THE REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION (TAC NO. ME3058)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Energy Northwest (the applicant), held a telephone conference call on February 3, 2011, to discuss and clarify the responses to the NRC's request for additional information (RAI) concerning the Columbia Generating Station, license renewal application. provides a listing of the participants and Enclosure 2 contains a listing of the responses to the RAls discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

IRA!

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

Enclosures:

As stated cc w/encls: Listserv DISTRIBUTION:

See next page ADAMS Accession No.: ML 11220AO 10

• concurrence via e-mail OFFICE LA: DLR/RPB1* PM: DLR/RPB1 BC: DLRIRPB 1 LA: DLR/RPB1 PM: DLRlRPB1 NAME SFigueroa ACunanan DMorey SFigueroa ACunanan DATE 08/08/2011 08/08/2011 08/11/2011 08/11/2011

08/11/2011.

OFFICIAL RECORD COpy

Letter to Energy Northwest from Arthur D. Cunanan dated August 11,2010.

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON FEBRUARY 3,2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST, CONCERNING THE RESPONSES TO THE REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE COLUMBIA GENERATING STATION, LICENSE RENEWAL APPLICATION (TAC NO. ME3058)

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