ML11314A189: Difference between revisions

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| document type = Letter, Request for Additional Information (RAI)
| document type = Letter, Request for Additional Information (RAI)
| page count = 4
| page count = 4
| project = TAC:ME6456, TAC:ME6455
| project = TAC:ME6455, TAC:ME6456
| stage = RAI
| stage = RAI
}}
}}
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==Dear Mr. Heacock:==
==Dear Mr. Heacock:==
On May 11. 2011, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2011-01, "Mitigating Strategies" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 1112S0360), to all holders of operating licenses for nuclear power reactors, except those that have permanently ceased operation and have certified that fuel has been removed from the reactor vessel. The purpose of the bulletin was to obtain a comprehensive verification that licensees' mitigating strategies to maintain or restore core cooling, spent fuel cooling. and containment following a large explosion or fire were compliant with Title 10 of the Code ofFederal Regulations (10 CFR), Part SO, Section SO.S4(hh)(2). The bulletin requested information on licensee 10 CFR SO.S4(hh)(2) mitigating strategies in light of the recent events at Japan's Fukushima Daiichi facility to determine if (1) additional assessment of program implementation is needed, (2) the current inspection program should be enhanced, or (3) further regulatory action is warranted. The bulletin required two sets of responses pursuant to the provisions of 10 CFR SO.54(f). The first responses were due 30 days after issuance of the bulletin (June 10. 2011). By letter dated June 7,2011 (ADAMS Accession No. ML 11164A020), you provided a response to the first set of questions for North Anna Power Station, Units 1 and 2. The second responses were due 60 days after issuance of the bulletin (July 11. 2011). By letter dated July 11. 2011 (ADAMS Accession No. ML 11194A011). you responded to this second set of questions.
On May 11. 2011, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2011-01, "Mitigating Strategies" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 1112S0360), to all holders of operating licenses for nuclear power reactors, except those that have permanently ceased operation and have certified that fuel has been removed from the reactor vessel. The purpose of the bulletin was to obtain a comprehensive verification that licensees' mitigating strategies to maintain or restore core cooling, spent fuel cooling. and containment following a large explosion or fire were compliant with Title 10 of the Code of Federal Regulations (10 CFR), Part SO, Section SO.S4(hh)(2).
D. Heacock -2 The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin. Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597. Sincerely, V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via REQUEST FOR ADDITIONAL INFORMATION NRC BULLETIN 2011-01, "MITIGATING STRATEGIES" NORTH ANNA POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-338 AND 50-339 Describe in detail the maintenance or testing of monitor nozzles, spray nozzles, or similar devices to ensure that they will be functional when needed. The bulletin requested that each licensee describe in detail the maintenance and testing on equipment procured to support the mitigating strategies to ensure that it will be functional when needed. In the context of the mitigating strategies, these devices are commonly used for firefighting, spent fuel pool spray strategies, and as a means to reduce the magnitude of fission product releases. The Nuclear Regulatory Commission staff could not determine if you performed activities to ensure that these devices will be functional when needed. Enclosure D. Heacock -The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin. Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597. Sincerely, IRA! by KCotton for V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via DISTRIBUTION: PUBLIC BPurnell EBowman SRosenberg RidsNrrLAMOBrien Resource RidsNrrPMNorthAnna Resource LPL 11-1 RlF RidsNrrDorlLpl 2-1 Resource RidsOgcRp Resource RidsNrrDorlDpr Resource RidsAcrsAcnw_MailCTR Resource RidsRgn2MailCenter Resource ADAMS Accession No*.. ML 11314A 189 NRR-106 uFFICE LPL 11-1 :PM LPL 1I-1:LA DPRPGCB:PM NAME VSreenivas (KCotton for) MOBrien (BClayton for) BPurneli DATE 11/10/11 11/10/11 11/15/11 OFFICE DPRPGCB:BC LPL 11-1 :BC LPL 11-1:PM NAME SRosenberg GKulesa (DJaffe for) VSreenivas (KCotton for) DATE 11/15/11 11/17/11 11/17/11 OFFICIAL RECORD COpy
The bulletin requested information on licensee 10 CFR SO.S4(hh)(2) mitigating strategies in light of the recent events at Japan's Fukushima Daiichi facility to determine if (1) additional assessment of program implementation is needed, (2) the current inspection program should be enhanced, or (3) further regulatory action is warranted.
}}
The bulletin required two sets of responses pursuant to the provisions of 10 CFR SO.54(f).
The first responses were due 30 days after issuance of the bulletin (June 10. 2011). By letter dated June 7,2011 (ADAMS Accession No. ML 11164A020), you provided a response to the first set of questions for North Anna Power Station, Units 1 and 2. The second responses were due 60 days after issuance of the bulletin (July 11. 2011). By letter dated July 11. 2011 (ADAMS Accession No. ML 11194A011).
you responded to this second set of questions.
D. Heacock -2 The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin.
Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597.
Sincerely, V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via REQUEST FOR ADDITIONAL INFORMATION NRC BULLETIN 2011-01, "MITIGATING STRATEGIES" NORTH ANNA POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-338 AND 50-339 Describe in detail the maintenance or testing of monitor nozzles, spray nozzles, or similar devices to ensure that they will be functional when needed. The bulletin requested that each licensee describe in detail the maintenance and testing on equipment procured to support the mitigating strategies to ensure that it will be functional when needed. In the context of the mitigating strategies, these devices are commonly used for firefighting, spent fuel pool spray strategies, and as a means to reduce the magnitude of fission product releases.
The Nuclear Regulatory Commission staff could not determine if you performed activities to ensure that these devices will be functional when needed. Enclosure D. Heacock -The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin.
Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597.
Sincerely, IRA! by KCotton for V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via DISTRIBUTION:
PUBLIC BPurnell EBowman SRosenberg RidsNrrLAMOBrien Resource RidsNrrPMNorthAnna Resource LPL 11-1 RlF RidsNrrDorlLpl 2-1 Resource RidsOgcRp Resource RidsNrrDorlDpr Resource RidsAcrsAcnw_MailCTR Resource RidsRgn2MailCenter Resource ADAMS Accession No*.. ML 11314A 189 NRR-106 uFFICE LPL 11-1 :PM LPL 1I-1:LA DPRPGCB:PM NAME VSreenivas (KCotton for) MOBrien (BClayton for) BPurneli DATE 11/10/11 11/10/11 11/15/11 OFFICE DPRPGCB:BC LPL 11-1 :BC LPL 11-1:PM NAME SRosenberg GKulesa (DJaffe for) VSreenivas (KCotton for) DATE 11/15/11 11/17/11 11/17/11 OFFICIAL RECORD COpy}}

Revision as of 13:51, 31 July 2018

North Anna Power Station, Unit Nos. 1 and 2, Request for Additional Information Regarding 60-Day Response to Bulletin 2011-01, Mitigating Strategies, (TAC Nos. ME6455 and ME6456)
ML11314A189
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 11/17/2011
From: V Sreenivas
Plant Licensing Branch II
To: Heacock D A
Virginia Electric & Power Co (VEPCO)
Cotton K R, 415-1438
References
TAC ME6455, TAC ME6456
Download: ML11314A189 (4)
v • d • e


Text

UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 November 17. 2011 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center SOOO Dominion Boulevard Glen Allen, VA 23060-6711 NORTH ANNA POWER STATION, UNIT NOS. 1 AND 2 -REQUEST FOR ADDITIONAL INFORMATION REGARDING 60-DAY RESPONSE TO BULLETIN 2011-01. "MITIGATING STRATEGIES" (TAC NOS. ME64SS AND ME64S6)

Dear Mr. Heacock:

On May 11. 2011, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2011-01, "Mitigating Strategies" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 1112S0360), to all holders of operating licenses for nuclear power reactors, except those that have permanently ceased operation and have certified that fuel has been removed from the reactor vessel. The purpose of the bulletin was to obtain a comprehensive verification that licensees' mitigating strategies to maintain or restore core cooling, spent fuel cooling. and containment following a large explosion or fire were compliant with Title 10 of the Code of Federal Regulations (10 CFR), Part SO, Section SO.S4(hh)(2).

The bulletin requested information on licensee 10 CFR SO.S4(hh)(2) mitigating strategies in light of the recent events at Japan's Fukushima Daiichi facility to determine if (1) additional assessment of program implementation is needed, (2) the current inspection program should be enhanced, or (3) further regulatory action is warranted.

The bulletin required two sets of responses pursuant to the provisions of 10 CFR SO.54(f).

The first responses were due 30 days after issuance of the bulletin (June 10. 2011). By letter dated June 7,2011 (ADAMS Accession No. ML 11164A020), you provided a response to the first set of questions for North Anna Power Station, Units 1 and 2. The second responses were due 60 days after issuance of the bulletin (July 11. 2011). By letter dated July 11. 2011 (ADAMS Accession No. ML 11194A011).

you responded to this second set of questions.

D. Heacock -2 The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin.

Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597.

Sincerely, V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via REQUEST FOR ADDITIONAL INFORMATION NRC BULLETIN 2011-01, "MITIGATING STRATEGIES" NORTH ANNA POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-338 AND 50-339 Describe in detail the maintenance or testing of monitor nozzles, spray nozzles, or similar devices to ensure that they will be functional when needed. The bulletin requested that each licensee describe in detail the maintenance and testing on equipment procured to support the mitigating strategies to ensure that it will be functional when needed. In the context of the mitigating strategies, these devices are commonly used for firefighting, spent fuel pool spray strategies, and as a means to reduce the magnitude of fission product releases.

The Nuclear Regulatory Commission staff could not determine if you performed activities to ensure that these devices will be functional when needed. Enclosure D. Heacock -The NRC staff has reviewed the submitted information and determined that it needs additional information regarding your 60-day response to the bulletin.

Please respond to the enclosed request for additional information within 30 days of the date of this letter. If you have any questions regarding this letter, please feel free to contact V. Sreenivas at (301) 415-2597.

Sincerely, IRA! by KCotton for V. Sreenivas, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-338 and Request for Additional cc w/encl: Distribution via DISTRIBUTION:

PUBLIC BPurnell EBowman SRosenberg RidsNrrLAMOBrien Resource RidsNrrPMNorthAnna Resource LPL 11-1 RlF RidsNrrDorlLpl 2-1 Resource RidsOgcRp Resource RidsNrrDorlDpr Resource RidsAcrsAcnw_MailCTR Resource RidsRgn2MailCenter Resource ADAMS Accession No*.. ML 11314A 189 NRR-106 uFFICE LPL 11-1 :PM LPL 1I-1:LA DPRPGCB:PM NAME VSreenivas (KCotton for) MOBrien (BClayton for) BPurneli DATE 11/10/11 11/10/11 11/15/11 OFFICE DPRPGCB:BC LPL 11-1 :BC LPL 11-1:PM NAME SRosenberg GKulesa (DJaffe for) VSreenivas (KCotton for) DATE 11/15/11 11/17/11 11/17/11 OFFICIAL RECORD COpy

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