ML110320677
| ML110320677 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/01/2011 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Division of License Renewal |
| References | |
| Download: ML110320677 (12) | |
Text
1 DiabloCanyonNPEm Resource From:
Ferrer, Nathaniel Sent:
Tuesday, February 01, 2011 4:46 PM To:
Grebel, Terence Cc:
DiabloCanyonNPEm Resource
Subject:
Draft Telecon Summaries Attachments:
Telecon Summary 1-4-11.doc; Telecon Summary 12-14-10.doc
- Terry, Attached are drafts of the Teleconference Summaries for December 14, 2010 and January 4, 2011. Please review and let me know if there are any corrections/changes needed.
Please let me know if you have any questions.
NathanielFerrer ProjectManager DivisionofLicenseRenewal OfficeofNuclearReactorRegulation U.S.NuclearRegulatoryCommission (301)4151045
Hearing Identifier:
DiabloCanyon_LicenseRenewal_NonPublic Email Number:
2460 Mail Envelope Properties (26E42474DB238C408C94990815A02F0927105369B5)
Subject:
Draft Telecon Summaries Sent Date:
2/1/2011 4:45:36 PM Received Date:
2/1/2011 4:45:38 PM From:
Ferrer, Nathaniel Created By:
Nathaniel.Ferrer@nrc.gov Recipients:
"DiabloCanyonNPEm Resource" <DiabloCanyonNPEm.Resource@nrc.gov>
Tracking Status: None "Grebel, Terence" <TLG1@pge.com>
Tracking Status: None Post Office:
HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 416 2/1/2011 4:45:38 PM Telecon Summary 1-4-11.doc 56826 Telecon Summary 12-14-10.doc 98298 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
LICENSEE:
Pacific Gas and Electric Company FACILITY:
Diablo Canyon Nuclear Power Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 4, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING REQUESTS FOR ADDITIONAL INFORMATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NUMBERS ME2896 AND ME2897)
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 January 4, 2011, to obtain clarification on the applicants response to requests for additional information (RAIs) regarding the Diablo Canyon Nuclear Power Plant license renewal application.
By letter dated September 30, 2010, PG&E sent the staff responses to RAIs 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 PG&Es response. Enclosure 1 provides a listing of the participants. Enclosure 2 provides discussions on the RAI responses for which the staff requested clarification.
The applicant had an opportunity to comment on this summary.
Nathaniel B. 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
LICENSEE:
Pacific Gas and Electric Company FACILITY:
Diablo Canyon Nuclear Power Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 4, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING REQUESTS FOR ADDITIONAL INFORMATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NUMBERS ME2896 AND ME2897)
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 January 4, 2011, to obtain clarification on the applicants response to requests for additional information (RAIs) regarding the Diablo Canyon Nuclear Power Plant license renewal application.
By letter dated September 30, 2010, PG&E sent the staff responses to RAIs 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 PG&Es response. Enclosure 1 provides a listing of the participants. Enclosure 2 provides discussions on the RAI responses for which the staff requested clarification.
The applicant had an opportunity to comment on this summary.
Nathaniel B. 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 Number: ML110140008 OFFICE LA: DLR PM: DLR/RPB2 BC: DLR/RPB2 PM: DLR/RPB2 NAME NFerrer DWrona NFerrer DATE 01/ /2011 01/ /2011 01/ /2011 01/ /2011 OFFICIAL RECORD COPY
Letter to Pacific Gas and Electric Company from Nathaniel B. Ferrer dated January XX, 2011
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 4, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING REQUESTS FOR ADDITIONAL INFORMATION RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NUMBERS ME2896 AND ME2897)
DISTRIBUTION:
HARD COPY:
DLR R/F E-MAIL:
PUBLIC [or NON-PUBLIC, if appropriate]
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ENCLOSURE 1 TELEPHONE CONFERENCE CALL DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS JANUARY 4, 2011 PARTICIPANTS:
AFFILIATIONS:
Nate Ferrer U.S. Nuclear Regulatory Commission (NRC)
Terry Grebel Pacific Gas and Electric Company (PG&E)
Kyle Duke PG&E
ENCLOSURE 2 DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION AGING MANAGEMENT PROGRAMS RAI B2.1.32-4 In response to RAI B2.1.32-4, the applicant committed to perform a one-time video inspection of the Unit 2 leak chase channels during the period of extended operation.
Discussion:
The staff was not clear when, during the period of extended operation, the applicant would be performing this inspection. The staff noted that the inspection would need to be done near the beginning of the period of extended operation, in order to provide an indication that the leak chases would remain clear during the period of extended operation. The applicant stated that it would perform the video inspection within 1 year prior to entering the period of extended operation. The applicant stated that it would supplement its response to RAI B2.1.32-4 to indicate this change.
LICENSEE:
Pacific Gas and Electric Company FACILITY:
Diablo Canyon Nuclear Power Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 14, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING REQUESTS FOR ADDITIONAL INFORMATION RESPONSE RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NUMBERS ME2896 AND ME2897)
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 December 14, 2010, to obtain clarification on PG&Es responses to the staffs requests for additional information (RAI) regarding the Diablo Canyon Nuclear Power Plant license renewal application.
By letters dated October 12, 15, 27, November 3, and 8, 2010, PG&E sent the staff its responses to RAIs regarding scoping and screening and TLAAs. The staff reviewed the information contained therein, and requested a telephone conference call. The telephone conference call was useful in clarifying PG&Es response. Enclosure 1 provides a listing of the participants. Enclosure 2 provides discussions on the RAI response for which the staff requested clarification.
The applicant had an opportunity to comment on this summary.
Nathaniel B. 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
LICENSEE:
Pacific Gas and Electric Company FACILITY:
Diablo Canyon Nuclear Power Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 14, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND PACIFIC GAS AND ELECTRIC COMPANY CONCERNING REQUESTS FOR ADDITIONAL INFORMATION RESPONSE RELATED TO THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NUMBERS ME2896 AND ME2897)
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 December 14, 2010, to obtain clarification on PG&Es responses to the staffs requests for additional information (RAI) regarding the Diablo Canyon Nuclear Power Plant license renewal application.
By letters dated October 12, 15, 27, November 3, and 8, 2010, PG&E sent the staff its responses to RAIs regarding scoping and screening and TLAAs. The staff reviewed the information contained therein, and requested a telephone conference call. The telephone conference call was useful in clarifying PG&Es response. Enclosure 1 provides a listing of the participants. Enclosure 2 provides discussions on the RAI response for which the staff requested clarification.
The applicant had an opportunity to comment on this summary.
Nathaniel B. 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 Number: ML110120418 OFFICE LA: DLR PM: DLR/RPB2 BC: DLR/RPB2 PM: DLR/RPB2 NAME NFerrer DWrona NFerrer DATE 01/ /2011 01/ /2011 01/ /2011 01/ /2011 OFFICIAL RECORD COPY
ENCLOSURE 1 TELEPHONE CONFERENCE CALL DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS DECEMBER 14, 2010 PARTICIPANTS:
AFFILIATIONS:
Nate Ferrer U.S. Nuclear Regulatory Commission (NRC)
Bill Rogers NRC Stan Gardocki NRC Garry Armstrong NRC John Tsao NRC Carol Nove NRC Terry Grebel Pacific Gas and Electric Company (PG&E)
Dan Gibbons PG&E Brandy Sizemore PG&E Kevin Braico PG&E Chris Beard PG&E David Gonzalez PG&E Miranda Tan PG&E Sid Bowern PG&E Greg Porter PG&E Larry Price PG&E Phillipe Soenen PG&E David Kunsemiller Strategic Teaming And Resource Sharing (STARS)
Stan Shepard STARS Al Saunders STARS Rye Davis STARS
ENCLOSURE 2 Diablo Canyon Nuclear Power Plant, Units 1 and 2 License Renewal Application Request for Additional Information Scoping/Screening and TLAA RAI 2.1-1 In its supplemental response to request for additional information (RAI) 2.1-1, the applicant provided its Title 10 of the Code of Federal Regulations (10 CFR) 54.4(a)(2) evaluation for nonsafety-related, fluid-filled components in the vicinity of safety-related components in the turbine building.
Discussion:
The staff was not clear on whether nonsafety-related, fluid-filled components could affect the HVAC supply and exhaust ducts in the 480V switchgear rooms. The staff was also not sure whether nonsafety-related, fluid-filled components could affect the CRPS supply fans, controls, and instrumentation. The applicant agreed to supplement its response to RAI 2.1-1 to address the staffs concerns.
RAI 2.3-1 In its supplemental response to RAI 2.3-1, the applicant provided justification for not including nonsafety-related piping directly attached to safety-related solenoid-operated valves in the compressed air system. The applicant referenced Nuclear Energy Institute (NEI) 95-10, Appendix F, Section 5.2.3.1, as part of its justification.
Discussion:
The staff noted that NEI 95-10, Appendix F, Section 5 applies to nonsafety-related structures and components (SCs) that are not directly attached to safety-related SCs; therefore, the staff was not clear why this section of NEI 95-10 applies to the nonsafety-related piping. The applicant agreed to supplement its response to RAI 2.3-1 to address the staffs concerns.
RAI 2.3-3 In its supplemental response to RAI 2.3-1, the applicant provided justification for not including nonsafety-related, fluid-filled components located in the fuel oil transfer pump vaults.
Discussion:
The staff could not determine, based on the applicants justification, why the nonsafety-related, fluid-filled components would not affect the safety-related components located in the vaults.
The applicant agreed to supplement its response to RAI 2.3-1 to address the staffs concerns.
RAI 2.3.3.7-1 In its supplemental response to RAI 2.3.3.7-1, the applicant provided justification for not including water traps in the compressed air system within the scope of license renewal.
Discussion:
The staff was not clear on whether a complete failure of the water traps could affect safety-related components that are located in the vicinity of the traps. The applicant agreed to supplement its response to RAI 2.3.3.7-1 to address the staffs concerns.
RAI 2.3.3.14-1 In its supplemental response to RAI 2.3.3.14-1, the applicant provided justification for why the diesel air start unloader line was in scope for 10 CFR 54.4(a)(2).
Discussion:
The staff was not clear why the unloader line was not considered as part of the pressure boundary and relied upon to perform a safety-related function. The applicant agreed to supplement its response to RAI 2.3.3.14-1 to address the staffs concerns.
RAI 4.7.5-2 In its supplemental response to RAI 4.7.5-2, the applicant provided details of the flaw evaluation for RHR piping well WIC-95.
Discussion:
The staff noted that based on the indication from the flaw evaluation, the flaw should be considered surface connected per the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI IWA-3310. The staff also noted that the applicant did not consider the flaw surface connected in its evaluation. The applicant agreed to supplement its response to RAI 4.7.5-2 to address the staffs concern.