ML102460151

Summary of Telephone Conference Call Held on 9/2/10 Between Us NRC and Pacific Gas and Electric Company Concerning the Response to RAIs Related to the Diablo Canyon Nuclear Power Plant Units 1 and 2 LRA

ML102460151
Person / Time
Site:	Diablo Canyon
Issue date:	09/28/2010
From:	Ferrer N License Renewal Projects Branch 2
To:	Office of Nuclear Reactor Regulation
Nate Ferrer, DLR/RPB2 415-1045
References
TAC ME2896, TAC ME2897
Download: ML102460151 (5)

Text

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NUCLEAR REGULATORY COMMISSION

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WASHINGTON, D.C. 20555-0001

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September 28,2010

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Pacific Gas and Electric Company FACILITY:

Diablo Canyon Nuclear Power Plant, Units 1 and 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON SEPTEMBER 2, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING RESPONSES TO REQUESTS FOR ADDITIONAL INFORMATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. ME2896 AND ME2897)

The U.S. Nuclear Regulatory Commission (!\\IRC or the staff) and representatives of Pacific Gas and Electric Company (PG&E or the applicant) held a telephone conference call on September 2,2010, to obtain clarification on the applicant's response to request for additional information (RAI) regarding the Diablo Canyon Nuclear Power Plant license renewal application.

By letters dated June 3, 2010, July 7,2010, and August 17, 2010. PG&E sent the staff a response to RAlletters dated May 18. 2010. June 14,2010, and July 20.2010, respectively.

The staff reviewed the information contained therein, and requested a telephone conference call. The telephone conference call was useful in clarifying the intent of the PG&E's response. provides a listing of the participants. Enclosure 2 provides discussions on RAI responses for which the staff requested clarification. PG&E will submit supplemental responses, as necessary, within 30 days of the issuance of this summary.

The applicant had an opportunity to comment on this summary.

Nathaniel Ferrer, Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosures:

As stated cc w/encls: Distribution via Listserv

TELEPHONE CONFERENCE CALL DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS SEPTEMBER 2, 2010 PARTICIPANTS Nate Ferrer Bill Holston Michelle Kichline Jim Gavula Andrew Prinaris Omesh Chopra Dwight Diercks Philippe Soenen Miranda Tan Dan Hromyak Kevin Braico Chris Beard David Kunsemiller Bill Boydo Mo Palmowski Rye Davis AFFILIATIONS U.S. Nuclear Regulatory Commission (NRC)

NRC NRC NRC NRC Argonne National Laboratory (ANL)

ANL Pacific Gas and Electric Company (PG&E)

PG&E PG&E PG&E PG&E Strategic Teaming And Resource Sharing (STARS)

STARS STARS STARS ENCLOSURE 1

Diablo Canyon Nuclear Power Plant, Units 1 and 2 License Renewal Application Request for Additional Information (Sets 1, 4, and 12)

Aging Management Programs RAI B2.1.13-2 In its June 3, 2010, response to RAI B2.1.13-2, the applicant provided details of the basis for maintaining the 18-month inspection frequency for Fire Water System Program. However, the staff was unclear how the operating experience was applied as part of the basis for the inspection frequency.

Discussion:

PG&E agreed to supplement its response to RAI B2.1.13-2 to clarify how operating experience was considered as part of the basis for the 18-month inspection freq uency.

RAI B2.1.13-4 In its August 17, 2010, response to RAI B2.1.13-4, the applicant provided details of the methodology and inspection techniques used for the firewater tank. However, the staff was unclear if the underside of the tank was accessible for the inspections described.

Discussion:

PG&E agreed to supplement its response to RAI B2.1.13-4 to clarify how the underside of firewater tank will be inspected.

RAI 82.1.16-1 In its July 7, 2010, response to RAI B2.1.16-1, the applicant provided details of the sampling procedure that will be used for the One-Time Inspection Program. However, the staff was unclear on the basis for the sampling sizes selected for the various aging effects.

Discussion:

PG&E agreed to supplement its response to RAI B2.1.16-1 to provide additional information on the basis for the sampling size and criteria for the program.

ENCLOSURE 2

. ML102460151 Ir;;FICE LA:DLR PM:RPB2:DLR BC:RPB2:DLR PM:RPB2:DLR NAME YEdmonds NFerrer DWrona NFerrer DATE 09/21/10 09/22/10 09/22/10 09/28/10

Letter to Pacific Gas and Electric Company from Nathaniel Ferrer dated September 28,2010.

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON SEPTEMBER 2, 2010, BElWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING RESPONSES TO REQUESTS FOR ADDITIONAL INFORMATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION DISTRIBUTION:

HARDCOPY:

DLR RF E-MAIL:

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