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==SUBJECT:==
==SUBJECT:==
MILLSTONE POWER STATION UNIT NO. 2-AUDIT PLAN REGARDING INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS SUPPORTING INFORMATION FOR SEISMIC SCREENING  
MILLSTONE POWER STATION UNIT NO. 2-AUDIT PLAN REGARDING INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS SUPPORTING INFORMATION FOR SEISMIC SCREENING  


==Dear Mr. Heacock:==
==Dear Mr. Heacock:==
 
On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340), to all power reactor licensees and holders of construction permits. The information request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.
On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f)
For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417), Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.
Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340),
By letter dated July 16, 2014 (ADAMS Accession No. ML 14195A034), the NRC staff issued a request for additional information to Dominion Nuclear Connecticut, Inc., regarding the adequacy of the IPEEE for Millstone Power Station, Unit No. 2 to use for seismic screening purposes.
to all power reactor licensees and holders of construction permits.
The information  
: request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.
For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417),
Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.
By letter dated July 16, 2014 (ADAMS Accession No. ML 14195A034),
the NRC staff issued a request for additional information to Dominion Nuclear Connecticut, Inc., regarding the adequacy of the IPEEE for Millstone Power Station, Unit No. 2 to use for seismic screening purposes.
The letter identified that an audit may be needed to support this activity.
The letter identified that an audit may be needed to support this activity.
The audit plan for the audit is enclosed.
The audit plan for the audit is enclosed.
D. Heacock If you have any questions, please contact me at 301-415-2856 or via email at Michael.
D. Heacock If you have any questions, please contact me at 301-415-2856 or via email at Michael. balazik@nrc.
balazik@nrc.
gov. Docket No. 336  
gov. Docket No. 336  


==Enclosure:==
==Enclosure:==


Audit Plan cc w/encl: Distribution via Listserv Sincerely, Michael Balazik, Project Manager Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Audit Plan for Millstone Power Station, Unit No. 2 Individual Plant Examination of External Events Supporting Information for Seismic Screening PURPOSE AND SCOPE On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information  
Audit Plan cc w/encl: Distribution via Listserv Sincerely, Michael Balazik, Project Manager Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Audit Plan for Millstone Power Station, Unit No. 2 Individual Plant Examination of External Events Supporting Information for Seismic Screening PURPOSE AND SCOPE On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information , "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340), to all power reactor licensees and holders of construction permits. The information request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.
, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f)
For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417), Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.
Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340),
to all power reactor licensees and holders of construction permits.
The information  
: request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.
For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417),
Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.
The NRC endorsed industry guidance "Seismic Evaluation Guidance:
The NRC endorsed industry guidance "Seismic Evaluation Guidance:
Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic,"
Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," provides the criteria used to determine if the licensee's IPEEE submittal is adequate to use for seismic screening purposes.
provides the criteria used to determine if the licensee's IPEEE submittal is adequate to use for seismic screening purposes.
If one or more of the criteria are not deemed adequate, the staff may still decide that the overall IPEEE analysis is adequate to support its use for seismic screening.
If one or more of the criteria are not deemed adequate, the staff may still decide that the overall IPEEE analysis is adequate to support its use for seismic screening.
The NRC staff reviewed Dominion's submittal and determined that additional information was needed to determine the IPEEE adequacy for seismic screening of Millstone, Unit 2. By letter dated July16, 2014 (ADAMS Accession No. ML 14195A034),
The NRC staff reviewed Dominion's submittal and determined that additional information was needed to determine the IPEEE adequacy for seismic screening of Millstone, Unit 2. By letter dated July16, 2014 (ADAMS Accession No. ML 14195A034), the NRC issued a request for additional information (RAI). Dominion submitted its RAI response by letter dated July 21, 2014 (ADAMS Accession No. ML 14204A620).
the NRC issued a request for additional information (RAI). Dominion submitted its RAI response by letter dated July 21, 2014 (ADAMS Accession No. ML 14204A620).
The scope of this audit will be limited to the information provided and referenced in Dominion's Seismic Hazard and Screening Report and response to the RAI. The purpose of this audit is to enable the NRC staff to come to a better understanding of the differences between the original and reconstituted IPEEE supporting calculations performed on the Chill Water Surge Tank and Enclosure  Battery Rack DB1 and DB2. The information gained from this audit will inform the NRC's seismic screening determination for Millstone Unit No. 2. AUDIT AGENDA The audit is expected to last a total of 3 hours, starting on October 23, 2014 at 2:00pm. The audit will take place at the Nuclear Energy Institute facilities in Rockville, MD. The agenda will include:
The scope of this audit will be limited to the information provided and referenced in Dominion's Seismic Hazard and Screening Report and response to the RAI. The purpose of this audit is to enable the NRC staff to come to a better understanding of the differences between the original and reconstituted IPEEE supporting calculations performed on the Chill Water Surge Tank and Enclosure  Battery Rack DB1 and DB2. The information gained from this audit will inform the NRC's seismic screening determination for Millstone Unit No. 2. AUDIT AGENDA The audit is expected to last a total of 3 hours, starting on October 23, 2014 at 2:00pm. The audit will take place at the Nuclear Energy Institute facilities in Rockville, MD. The agenda will include:
* An understanding of the differences between original and reconstituted IPEEE supporting calculations contained in the RAI Request 1.
* An understanding of the differences between original and reconstituted IPEEE supporting calculations contained in the RAI Request 1.
* Review of reconstituted calculations supporting the RAI Request 1 response related to the Chilled Water Surge Tanks and Battery Racks DB1 and DB2. AUDIT TEAM The audit team will consist of:
* Review of reconstituted calculations supporting the RAI Request 1 response related to the Chilled Water Surge Tanks and Battery Racks DB1 and DB2. AUDIT TEAM The audit team will consist of:
* Michael Balazik, Japan Lessons-Learned  
* Michael Balazik, Japan Lessons-Learned Division, Office of Nuclear Reactor Regulation
: Division, Office of Nuclear Reactor Regulation
* Nilesh Chokshi, Division of Site Safety & Environmental Analysis, Office on New Reactors
* Nilesh Chokshi, Division of Site Safety & Environmental  
: Analysis, Office on New Reactors
* Donnie Harrison, Division of Safety Systems & Risk Assessment, Office on New Reactors
* Donnie Harrison, Division of Safety Systems & Risk Assessment, Office on New Reactors
* Kamal Manoly, Division of Engineering, Office of Nuclear Reactor Regulation
* Kamal Manoly, Division of Engineering, Office of Nuclear Reactor Regulation
* Thomas Weaver, Division of Engineering, Office of Nuclear Regulatory Research
* Thomas Weaver, Division of Engineering, Office of Nuclear Regulatory Research
* Diane Jackson, Division of Site Safety & Environmental  
* Diane Jackson, Division of Site Safety & Environmental Analysis, Office on New Reactors
: Analysis, Office on New Reactors
* Yong Li, Division of Engineering, Office of Nuclear Reactor Regulation DOCUMENTS REQUESTED FOR STAFF EXAMINATION The staff requests that below documents are available for examination and discussion during the audit:
* Yong Li, Division of Engineering, Office of Nuclear Reactor Regulation DOCUMENTS REQUESTED FOR STAFF EXAMINATION The staff requests that below documents are available for examination and discussion during the audit:
* 25203-29033 SH-041 T-98 Chilled Water Surge Tank
* 25203-29033 SH-041 T-98 Chilled Water Surge Tank
Line 77: Line 57:
* Telephone available to call NRC Headquarters if necessary
* Telephone available to call NRC Headquarters if necessary
* Private space for internal NRC staff discussion separate from Dominion DOCUMENTATION OF AUDIT Within 90 days of the audit, the NRC staff will prepare a detailed audit report documenting the information reviewed during the audit, and any open items identified as a result of the audit. The NRC staff will also document its understanding of the proposed resolution of any identified open items.
* Private space for internal NRC staff discussion separate from Dominion DOCUMENTATION OF AUDIT Within 90 days of the audit, the NRC staff will prepare a detailed audit report documenting the information reviewed during the audit, and any open items identified as a result of the audit. The NRC staff will also document its understanding of the proposed resolution of any identified open items.
D. Heacock If you have any questions, please contact me at 301-415-2856 or via emai at Michael.
D. Heacock If you have any questions, please contact me at 301-415-2856 or via emai at Michael. balazik@nrc.gov.
balazik@nrc.gov.
Docket No. 336  
Docket No. 336  


Revision as of 11:59, 9 July 2018

Audit Plan for Millstone Unit 2 Regarding Individual Plant Examination of External Events Supporting Information for Seismic Screening
ML14295A085
Person / Time
Site: Millstone Dominion icon.png
Issue date: 10/22/2014
From: Balazik M F
Japan Lessons-Learned Division
To: Heacock D A
Dominion Nuclear Connecticut
Balazik M F, NRR/JLD, 415-2856
References
Download: ML14295A085 (6)
v • d • e


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. David A Heacock President and Chief Nuclear Officer Dominion Nuclear Connecticut, Inc. lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060 October 22, 2014

SUBJECT:

MILLSTONE POWER STATION UNIT NO. 2-AUDIT PLAN REGARDING INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS SUPPORTING INFORMATION FOR SEISMIC SCREENING

Dear Mr. Heacock:

On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340), to all power reactor licensees and holders of construction permits. The information request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.

For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417), Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.

By letter dated July 16, 2014 (ADAMS Accession No. ML 14195A034), the NRC staff issued a request for additional information to Dominion Nuclear Connecticut, Inc., regarding the adequacy of the IPEEE for Millstone Power Station, Unit No. 2 to use for seismic screening purposes.

The letter identified that an audit may be needed to support this activity.

The audit plan for the audit is enclosed.

D. Heacock If you have any questions, please contact me at 301-415-2856 or via email at Michael. balazik@nrc.

gov. Docket No. 336

Enclosure:

Audit Plan cc w/encl: Distribution via Listserv Sincerely, Michael Balazik, Project Manager Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Audit Plan for Millstone Power Station, Unit No. 2 Individual Plant Examination of External Events Supporting Information for Seismic Screening PURPOSE AND SCOPE On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information , "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident" (hereafter referred to as the 50.54(f) letter) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 12053A340), to all power reactor licensees and holders of construction permits. The information request, in part, requested that licensees reevaluate the seismic hazards at their sites against present-day NRC requirements.

For central and eastern United States sites, the information request required licensees to submit a seismic hazard evaluation to the NRC by March 31, 2014. By letter dated March 31, 2014 (ADAMS Accession No. ML 14092A417), Dominion Nuclear Connecticut, Inc. (Dominion) submitted its Seismic Hazard and Screening Report for Millstone Power Station, Units 2 and 3 to the NRC. Dominion concluded in the report that the Individual Plant Examination of External Events (IPEEE) is adequate for seismic screening purposes and that both Millstone Unit 2 and 3 screen out of conducting additional seismic risk evaluations.

The NRC endorsed industry guidance "Seismic Evaluation Guidance:

Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," provides the criteria used to determine if the licensee's IPEEE submittal is adequate to use for seismic screening purposes.

If one or more of the criteria are not deemed adequate, the staff may still decide that the overall IPEEE analysis is adequate to support its use for seismic screening.

The NRC staff reviewed Dominion's submittal and determined that additional information was needed to determine the IPEEE adequacy for seismic screening of Millstone, Unit 2. By letter dated July16, 2014 (ADAMS Accession No. ML 14195A034), the NRC issued a request for additional information (RAI). Dominion submitted its RAI response by letter dated July 21, 2014 (ADAMS Accession No. ML 14204A620).

The scope of this audit will be limited to the information provided and referenced in Dominion's Seismic Hazard and Screening Report and response to the RAI. The purpose of this audit is to enable the NRC staff to come to a better understanding of the differences between the original and reconstituted IPEEE supporting calculations performed on the Chill Water Surge Tank and Enclosure Battery Rack DB1 and DB2. The information gained from this audit will inform the NRC's seismic screening determination for Millstone Unit No. 2. AUDIT AGENDA The audit is expected to last a total of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, starting on October 23, 2014 at 2:00pm. The audit will take place at the Nuclear Energy Institute facilities in Rockville, MD. The agenda will include:

  • An understanding of the differences between original and reconstituted IPEEE supporting calculations contained in the RAI Request 1.
  • Review of reconstituted calculations supporting the RAI Request 1 response related to the Chilled Water Surge Tanks and Battery Racks DB1 and DB2. AUDIT TEAM The audit team will consist of:
  • Michael Balazik, Japan Lessons-Learned Division, Office of Nuclear Reactor Regulation
  • Nilesh Chokshi, Division of Site Safety & Environmental Analysis, Office on New Reactors
  • Donnie Harrison, Division of Safety Systems & Risk Assessment, Office on New Reactors
  • Kamal Manoly, Division of Engineering, Office of Nuclear Reactor Regulation
  • Thomas Weaver, Division of Engineering, Office of Nuclear Regulatory Research
  • Diane Jackson, Division of Site Safety & Environmental Analysis, Office on New Reactors
  • Yong Li, Division of Engineering, Office of Nuclear Reactor Regulation DOCUMENTS REQUESTED FOR STAFF EXAMINATION The staff requests that below documents are available for examination and discussion during the audit:
  • 25203-29033 SH-041 T-98 Chilled Water Surge Tank
  • Drawing 25203-33027-00002-Battery Rack Modification
  • Drawings 25203-39020 Sheet 2 2A 7 11
  • ETE-CEM-2014-0001 RO Excerpt for Evaluation of IPEEE Open Items
  • S&A Calculation C015 (Chilled Water Storage Tank)
  • S&A Calculation COO? (Battery Racks DB1 and DB2)
  • MMOD M2-96568 (Battery Rack Modification)
  • Any referenced and/or supporting calculations in the Seismic Hazard and Screening Report and RAI response for the Chilled Water Storage Tank and Battery Racks DB1 and DB2 LOGISTICAL CONSIDERATIONS The following logistics are also requested:
  • Telephone available to call NRC Headquarters if necessary
  • Private space for internal NRC staff discussion separate from Dominion DOCUMENTATION OF AUDIT Within 90 days of the audit, the NRC staff will prepare a detailed audit report documenting the information reviewed during the audit, and any open items identified as a result of the audit. The NRC staff will also document its understanding of the proposed resolution of any identified open items.

D. Heacock If you have any questions, please contact me at 301-415-2856 or via emai at Michael. balazik@nrc.gov.

Docket No. 336

Enclosure:

Audit Plan cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC LPL 1-1 Reading RidsNrrDorllpl1-1 Resource RidsNrrPMMillstone Resource RidsNrrLASLent Resource ADAMS Accession No.* ML 14295A085 OFFICE NRR/JLD/JHMB/PM NAME MBalazik (NDiFrancesco for) DATE 10/22/14 OFFICE NRO/DSEAIRGS2/BC NAME DJackson DATE 10/22/14 Sincerely, IRA by Nicholas DiFrancesco for! Michael Balazik, Project Manager Japan Lessons-Learned Division Office of Nuclear Reactor Regulation NRR/JLD/LA NRR/DORL/LPL 1-1/PM SLent MThadani 10/22/14 10/22/14 NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM SWhaley MBalazik (NDiFrancesco for) 10/22/14 10/22/14 OFFICIAL RECORD COPY

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