ML102390093

8/18/10, Summary of Telephone Conference Call Held Between the Usnrc and PG&E Concerning Responses to Requests for Additional Information Related to the Diablo Canyon Nuclear Power Plant, Units 1 and 2, License Renewal Application

ML102390093
Person / Time
Site:	Diablo Canyon
Issue date:	09/15/2010
From:	Ferrer N B License Renewal Projects Branch 2
To:	Pacific Gas & Electric Co
Ferrer, N B, NRR/DLR, 415-1045
References
Download: ML102390093 (5)

Text

UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 September 15,2010 LICENSEE:

Pacific Gas and Electric Company FACILITY:

Diablo Canyon Nuclear Power Plant, Units 1 and 2 SUB,JECT:

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON AUGUST 18, 2010, BElWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING RESPONSES TO REQUESTS FOR ADDITIONAL INFORIVIATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Pacific Gas and Electric Company (PG&E or the applicant) held a telephone conference call on August 18, 2010, to obtain clarification on the applicant's response to a request for additional information (RAI) regarding the Diablo Canyon Nuclear Power Plant license renewal application.

By letter dated July 7,2010, PG&E sent the staff a response to RAlletter dated June 14,2010, regarding aging management programs.

The staff reviewed the information contained therein, and requested a telephone conference call. The telephone conference call was useful in clarifying the intent of PG&E's response.

Enclosure 1 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. Follow-up RAls, determined to be necessary, will be issued separately by a formal letter. The applicant had an opportunity to comment on this summary. athaniel 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 DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND LICENSE RENEWAL LIST OF AUGUST PARTICIPANTS Nate Ferrer Bart Fu Jim Gavula Dwight Diercks Philippe Soenen James Hill Chris Beard Dan Gibbons AI Saunders David Kunsemiller Rye Davis AFFILIATIONS U.S. Nuclear Regulatory Commission (NRC) NRC NRC Argonne National Laboratory Pacific Gas and Electric Company (PG&E) PG&E PG&E PG&E Strategic Teaming And Resource Sharing (STARS) STARS STARS ENCLOSURE Diablo Canyon Nuclear Power Plant, Units 1 and License Renewal Request for Additional Information (Set Aging Management In its July 7, 2010, response to request for additional information (RAI) 82.1.16-2, the applicant described the details of the One-Time Inspection Program inspection techniques.

However, the staff was not clear if the scope of the program has been defined to include eddy current testing of heat exchanger tubes in an environment comparable to the non-regenerative heat exchangers.

Discussion:

Pacific Gas & Electric Company agreed to supplement the response to RAI 82.1.16-2.

RAI 82.1.19-2 In its July 7, 2010, response to RAI B2.1.19-2, the applicant provided justification for the use of the ASME Code Class 1 Small-Bore Piping Program. However, the staff was unclear of the full history of failures in Class 1 small-bore piping. The staff was also unclear about the sampling size and methodology of the program. Discussion:

The staff will issue a follow-up RAI to clarify the relevant plant-specific operating experience and the program's sampling size and methodology.

ENCLOSURE September 15, 2010 LICENSEE:

Pacific Gas and Electric Company FACILITY:

Diablo Canyon Nuclear Power Plant, Units 1 and 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON AUGUST 18, 2010, BE"TWEEN 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 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Pacific Gas and Electric Company (PG&E or the applicant) held a telephone conference call on August 18, 2010, to obtain clarification on the applicant's response to a request for additional information (RAI) regarding the Diablo Canyon Nuclear Power Plant license renewal application.

By letter dated July 7, 2010, PG&E sent the staff a response to RAlletter dated June 14, 2010, regarding aging management programs.

The staff reviewed the information contained therein, and requested a telephone conference call. The telephone conference call was useful in clarifying the intent of PG&E's response.

Enclosure 1 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. Follow-up RAls, determined to be necessary, will be issued separately by a formal letter. The applicant had an opportunity to comment on this summary. IRA! 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 DISTRIBUTION:

See next page ADAMS Accession No.: ML 102390093 OFFICE LA:DLR PM:RPB2:DLR BC:RPB2:DLR r;;M:RPB2:DLR NAME IKing NFerrer DWrona NFerrer DATE 9/01/10 9/02/10 9/10/10 9/15/10 OFFICIAL RECORD COpy Memorandum to Pacific Gas and Electric Company from N. Ferrer dated September 15.2010

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON AUGUST 18. 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 DISTRIBUTION:

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