ML102870245

October 13, 2010, Summary of Teleconference Held Between the U.S. NRC and Energy Northwest, Concerning the Draft Request for Additional Information Pertaining to the Columbia Generating Station License Renewal Application

ML102870245
Person / Time
Site:	Columbia
Issue date:	10/25/2010
From:	Gettys E License Renewal Projects Branch 1
To:
Gettys E, NRR/DLR, 415-4029
References
TAC ME3058
Download: ML102870245 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 25, 2010 LICENSEE: Energy Northwest FACILITY: Columbia Generating Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 13, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST, CONCERNING THE DRAFT REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE COLUM BIA GENERATING STATION LICENSE RENEWAL APPLICATION (TAC NO. ME3058)

The U.S. Nuclear Regulatory Comm ission (NRC) and representatives of Energy Northwest, held a telephone conference ca ll on October 13, 2010, to discuss and clarify the NRC's draft request for additional information (D-RAI) concerning the Columbia Generating Station, license renewal application. provides a listing of the participants and Enclosure 2 contains a listing of the D-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.

Evelyn H. Gettys, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-397

Enclosures:

As stated cc w/encls: Distribution via Listserv

TELEPHONE CONFERENCE CALL COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS October 13, 2010 PARTICIPANTS AFFILIATIONS Evelyn Gettys U.S. Nuclear Regulatory Commission (NRC)

Bart Fu NRC Abbas Mostala Energy Northwest (EN)

Scott Wood EN Marsha Eades EN David Lee AREVA ENCLOSURE 1

TELEPHONE CONFERENCE CALL COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION October 13, 2010 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Energy Northwest (the applicant) held a telephone conference call on October 13, 2010, to discuss the following draft request for additional information (D-RAI) concerning the Columbia Generating Station license renewal application (LRA).

Draft Small Bore Piping Program D-RAI B.2.49-2

Background

LRA Section B.2.49 states that the Small Bore Piping Program is a new plant-specific program that wi ll detect and characterize cracking in small-bore piping components that are exposed to reactor coolant. In the "detection of aging effects" program element the applicant stated that in-scope components will be grouped into populations based on component type, material, and environment. The applicant also stated that the sample size will be 10 percent of each population (except for socket welds) with a minimum of one location and a maximum of 20 locations; the socket weld sample will include three locations. Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants Section A.1.2.3.4 states that this program element shou ld describe "when," "where," and "how" program data are collected (i.e. ,

all aspects of activities to collect data as part of the program). It also states that when sampling is used to inspect a group of structures and components, a basis should be provided for the inspection population and sample size that is selected.

The applicant stated the number of socket welds to be examined as a part of the Small Bore Piping Program; however, it does not state the total number of such welds in the plant (i. e., the sample population). The staff is unable to determine the sample size for socket welds as a percentage of the total number of such welds present to assess whether the sample size is sufficient to be representative of the total socket weld sample population.

Reguest Provide and justify the sampling information that is selected, in terms of number of welds and percent of welds to be inspected, for the volumetric examinations of socket welds for both nondestructive and/or destructive examinations.

Discussion: The applicant understands the question and the staff will send a formal RAI.

ENCLOSURE 2

ML102870245 OFFICE PM:RPB1 :DLR LARPOB:DLR BC: RPB1 :DLR PM:RPB1 :DLR NAME EGettys YEdmonds BPham EGettys (Signature)

DATE 10/21/10 10/21/10 10/25/10 10/25/10

Memorandum to Energy Northwest from Evelyn H. Gettys dated October 25,2010

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 13. 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST, CONCERNING THE DRAFT REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION (TAC NO. ME3058)

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