ML13106A331
| ML13106A331 | |
| Person / Time | |
|---|---|
| Issue date: | 05/07/2013 |
| From: | Leeds E Office of Nuclear Reactor Regulation |
| To: | Joseph E Pollock Nuclear Energy Institute |
| Regner L, NRR/JLD, 415-1906 | |
| Shared Package | |
| ML13114A949 | List: |
| References | |
| Download: ML13106A331 (28) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 7,2013 Mr. Joseph E. Pollock, Executive Director Nuclear Energy Institute 1776 I Street NW, Suite 400 Washington, DC 20006-3708
SUBJECT:
ELECTRIC POWER RESEARCH INSTITUTE FINAL DRAFT REPORT XXXXXX, "SEISMIC EVALUATION GUIDANCE: AUGMENTED APPROACH FOR THE RESOLUTION OF FUKUSHIMA NEAR-TERM TASK FORCE RECOMMENDATION 2.1: SEISMIC," AS AN ACCEPTABLE ALTERNATIVE TO THE MARCH 12, 2012, INFORMATION REQUEST FOR SEISMIC REEVALUATIONS
Dear Mr. Pollock:
On behalf of the U.S. Nuclear Regulatory Commission (NRC), I am responding to the Nuclear Energy Institute's (NEI's) letter1 of April 9, 2013. Your letter included a discussion of the update to the central and eastern United States (CEUS) ground motion model (GMM); an attached final draft of Electric Power Research Institute (EPRI) Report, "Seismic Evaluation Guidance:
Augmented Approach for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic" (hereafter referred to as the EPRI Guidance); and attached proposed schedules accounting for the GMM update, implementation of the EPRI Guidance, and seismic resource limitations.
The NEI letter indicates that industry intends to supplement its use of the staff-endorsed "Seismic Evaluation Guidance: Screening Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic,,,2 with proposed interim actions, as detailed in the EPRI Guidance. The SPID guidance was the product of significant interaction between the NRC, NEI, EPRI, and other stakeholders at numerous public meetings to support licensee responses to Enclosure 1 ofthe March 12, 2012, information requese that was issued by the NRC pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.54(f) (the 50.54(f) letter). As with the SPID guidance, the NRC, NEI, EPRI, and other stakeholders have interacted in several public meetings since November 2012 to discuss the EPRI Guidance document.
The staff has determined that the EPRI Guidance will provide an important demonstration of seismic margin and expedite plant safety enhancements through evaluations and potential near-term modifications of certain core and containment cooling equipment while more comprehensive plant seismic risk evaluations are being performed. The NRC staff has also determined that the schedule modifications provided in the NEI's April 9, 2013, letter are Agencywide Documents Access and Management System (ADAMS) Accession No. ML13101A379.
The SPID guidance document is found in ADAMS under Accession No. ML12333A170. The staff endorsement letter for the SPID guidance is found in ADAMS under Accession No. ML12319A074.
The SO.S4(f) letter is available in ADAMS under Accession No. ML120S3A340.
J. Pollock
- 2 acceptable since the schedule accounts for seismic resource limitations, EPRI's completion of the update to the GMM for the CEUS, and implementation of the EPRI Guidance evaluations and modifications.
Ground Motion Model The SO.S4(f) letter requested that those licensees whose plants are located in the CEUS use NUREG-211S, "Central and Eastern United States Seismic Source Characterization for Nuclear Facilities," and the appropriate EPRI (2004, 2006) GMM to characterize the seismic hazard for their sites.4 Subsequent to the issuance of the SO.S4(f) letter, industry informed the staff that it had undertaken a study and determined that the EPRI (2004, 2006) GMM should be updated.5 In order to facilitate its eventual review of the updated EPRI GMM, the staff has interacted with NEI, EPRI, and other stakeholders in public meetings on industry's efforts to update the EPRI GMM.
By letter dated January 31, 2013,6 NEI transmitted the EPRI draft document, "Draft - EPRI (2004, 2006) Ground-Motion Model (GMM) Review Project" to the NRC, requesting review and approval by February 27,2013. For the update of its earlier GMM, EPRI used a significant amount of additional data, conducted field investigations, and used more recent methods than were previously available. In performing the GMM update, EPRI has also addressed the concerns of an independent peer review panel, which is an important part of the Senior Seismic Hazard Analysis Committee (SSHAC) guidelines (these guidelines are discussed in NRC's NUREG-2117, "Practical Implementation Guidelines for SSHAC Level 3 and 4 Hazard Studies").
Following a review of the NEI submittal, in a public meeting on February 28, 2013,7 the staff expressed concern with EPRI's treatment of uncertainty and the level of documentation in the updated GMM. The staff formally documented these concerns by letter dated March 20, 2013. 8 Subsequently, in a public meeting on March 26, 2013,9 industry presented a revision of its updated EPRI GMM, which demonstrated significant progress towards addressing the staff's concerns with respect to the treatment of uncertainty. Industry also proposed a schedule, including further interactions with NRC staff, for completing the development and documentation of the updated EPRI GMM. In order to complete its update of the EPRI GMM and accompanying documentation, and to allow time for the development of site seismic hazard curves, industry proposed a six month delay from the schedule outlined in the SO.S4(f) letter for the submittal of the seismic hazard reevaluations for CEUS plants.
The staff agrees that updated models, methods, and data will provide licensees with the most current information in order to perform the seismic hazard evaluations requested by the SO.S4(f) letter. The NRC staff intends to complete its review of the industry's updated CEUS GMM by Licensees whose sites are located in the western United States (WUS) were asked to develop a probabilistic seismic hazard analysis consistent with the process used for new reactor licensing under 10 CFR Part 52, "Licenses, Certifications, and Approvals for Nuclear Power Plants."
By letter dated August 24, 2012, at ADAMS Accession No. ML12240A034, the industry notified staff of its intent to proceed with Phase 2 of the GMM update project.
The letter can be found in ADAMS at Accession No. ML13059A090.
The meeting summary and presentation materials can be found in the package in ADAMS at Accession No.
Ml13106A158.
The letter can be found in ADAMS at Accession No. Ml13078A029.
The meeting summary and presentation material can be found in the package in ADAMS at Accession No.
Ml13081A304.
J. Pollock
- 3 August 30, 2013, if the industry submits the completed documentation of the updated model by June 30, 2013. If the staff is unable to approve the updated EPRI GMM by August 30, 2013, industry is expected to use the staff-approved EPRI (2004, 2006) GMM for the CEUS plant reevaluations.
EPRI Guidance The EPRI Guidance document provides licensees with additional guidance on the performance of an Expedited Seismic Evaluation Process. The Expedited Seismic Evaluation Process is a screening, evaluation, and equipment modification process to be conducted by licensees to provide additional seismic margin and expedite plant safety enhancements for certain core and containment cooling components while more detailed and comprehensive plant seismic risk evaluations are being performed.
The Expedited Seismic Evaluation Process focuses on the equipment needed to maintain or restore reactor and containment cooling during the initial phase of a severe external event causing an extended loss of all alternating current power as identified in Order EA-12-049, "Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design-Basis External Events.,,1o In response to the Order, NEI developed NEI12-06, "Diverse and Flexible Coping Strategies (FLEX) Implementation Guide.,,11 The Expedited Seismic Evaluation Process identifies a subset of FLEX Phase 1 equipment for evaluation and potential modification. This subset of FLEX equipment is installed core and containment cooling equipment and connection points needed during an extended station blackout event.
In particular, the guidance describes a methodology for the evaluation of the seismic capacity of the equipment identified in the Expedited Seismic Evaluation Process. If the seismic capacity of the equipment is inadequate relative to the reevaluated seismic demand, then the guidance provides equipment modification criteria. These modifications will provide additional assurance regarding maintenance of core and containment cooling during beyond-design-basis seismic events. In accordance with the guidance, licensees will submit the results of the evaluations, including required equipment modifications and their implementation schedule, in an Expedited Seismic Evaluation Process report for review by the NRC staff. The letter states that CEUS licensees will submit the reports resulting from the Expedited Seismic Evaluation Process by December 2014 and complete non-outage-related Expedited Seismic Evaluation Process equipment modifications by December 2016. Similarly, the letter states that the western United States (WUS) licensees will submit Expedited Seismic Evaluation Process reports by January 2016 and complete non-outage-related Expedited Seismic Evaluation Process equipment modifications by June 2018.
After review of industry's proposed EPRI Guidance, the NRC staff believes that the evaluations and potential near-term equipment modifications associated with the Expedited Seismic Evaluation Process will provide an important demonstration of seismic margin and enhance plant safety while more detailed plant risk evaluations are being conducted by licensees. The 10 The Order is available in ADAMS under Accession No. ML12054A736.
11 The guidance is available in ADAMS under Accession No. ML12242A378.
J. Pollock
- 4 staff further concludes that the EPRI Guidance provides an appropriate methodology for licensees to implement and complete the Expedited Seismic Evaluation Process according to the schedule provided in the letter.
In accordance with the 50.54(f) letter, each licensee is to submit to the NRC its intention to follow the NRC-endorsed seismic reevaluation guidance (or SPID), or an alternative approach, 60 days after the issuance of the NRC-endorsed guidance. Licensees may use the EPRI Guidance, in addition to the SPID guidance, as an acceptable approach for responding to the information requested in Enclosure 1 of the 50.54(f) letter. Accordingly, the NRC staffs issuance of this letter endorsing the EPRI Guidance is not considered backfitting, as defined in 10 CFR 50.109(a)(1).
The NRC requests that EPRI publish a final version of the EPRI Guidance within one month of receipt of this letter. The final version of the EPRI Guidance should incorporate this letter between the title page and the first section, and EPRI should remove the draft markings from the document.
Schedule Modification As discussed above, the nuclear power industry has proposed two adjustments to the seismic hazard reevaluations at nuclear power plant sites: 1) to complete the update of the EPRI GMM for the CEUS, and 2) to implement the EPRI Guidance. These proposed changes affect the schedule outlined in the 50.54(f) letter.
First, the industry has requested additional time to complete the updated EPRI GMM project, including documentation and interactions with the NRC staff. The project documentation is scheduled to be submitted to the NRC on June 3, 2013. Pending approval by the staff, CEUS licensees will use the updated model to complete the site-specific seismic hazard evaluations specified in Enclosure 1 to the SPID guidance. Currently, the hazard submittals are requested by September 2013; however, the industry has requested to submit the hazard evaluations by March 31, 2014. The industry stated in its letter that it will not delay submittal of items 3.a.
"Description of Subsurface Materials and Properties," and 3.b. "Development of Base Case Profiles and Nonlinear Material Properties" of Section 4 of Enclosure 1 to the SPID guidance.
Licensees intend to submit these items in September 2013 for the staff's review. This will allow the staff to begin its review in accordance with the original schedule and complete a significant portion of the Section 4 review on time.
The staff finds that the schedule modifications discussed above for CEUS plants are acceptable because the updated GMM will provide the CEUS operating nuclear plant fleet with a model developed using the most recent data and methodologies available for their seismic hazard reevaluations. Additionally, the partial submittal in September 2013 will allow the staff to complete a portion of its review as originally scheduled by the 50.54(f) letter.
Second, the industry has requested modifications to the 50.54(f) letter schedule to allow for implementation of the Expedited Seismic Evaluation Process for those nuclear power plants where the reevaluated seismic hazard exceeds the plant's design basis. These schedule modifications allow for completion of the Expedited Seismic Evaluation Process for CEUS plants
J. Pollock
- 5 by December 2016, if the equipment modifications do not require a plant shutdown to access equipment. 12 For WUS plants, the Expedited Seismic Evaluation Process modifications will be completed by June 2018, if the modifications do not require a plant shutdown to access equipment.
For plants requiring a seismic risk analysis, the 50.54(f) letter states that the staff will perform a prioritization for both the CEUS and WUS plants into two priority groups, and possibly a third, if needed. Under industry's proposed schedule, the higher priority CEUS plants will complete their risk evaluations by June 2017 (originally scheduled for October 2016). This delay is primarily due to the additional time needed to complete the EPRI GMM update project. The second group of CEUS plants will complete their risk evaluations by December 2019. This is about a two-year delay from the schedule specified in the 50.54(f) letter for the lower priority plants to complete their risk evaluations. Conversely, the letter proposes an earlier completion date of June 2017 for the risk evaluations for the higher priority WUS plants.
The staff finds that the schedule modifications discussed above for CEUS and WUS plants are acceptable, because the Expedited Seismic Evaluation Process provides for near-term seismic evaluations and expedited equipment modifications at the plants that will offer additional assurance that plants will operate safely during a beyond-design-basis seismic event.
Furthermore, the schedule modifications account for limited seismic resources available to both the NRC and the industry. The schedule modifications provide for completion of the higher priority CEUS plant risk evaluations by the end of June 2017, which is not a significant extension of the original 50. 54(f) letter schedule of October 2016. In addition, the schedule proposes an earlier completion date for the higher priority risk evaluations for the WUS plants.
The industry noted in its letter that if a large number of plants need to perform the risk evaluations, additional time may be needed which may extend the completion of some risk evaluations for a third tier of lower priority plants until December 2020. The NRC staff finds that the additional time to complete these lower priority plant risk evaluations is acceptable because limited seismic resources will likely impact the number of risk evaluations that can be completed by 2019.
Conclusion In conclusion, the staff has determined that the proposed EPRI Guidance and the schedule modifications described in the NEl's April 9, 2013, letter are acceptable since they provide for implementation of the expedited interim actions and near-term plant safety enhancements, as well as EPRl's completion of the update to the GMM for the CEUS. The industry proposal also provides a reasonable approach and schedule which accounts for the considerable seismic resources needed to complete the seismic reevaluations.
If outages are required, the plants are allowed two outages from the completion of the Expedited Seismic Evaluation Process report. which are to be submitted to the NRC staff for review by December 31,2014.
12
J. Pollock
-6 If you or your staff have additional questions, please contact my office; alternatively, you can contact Mrs. Lisa Regner of my staff by phone at 301-415-1906, or bye-mail at Lisa. Regner@nrc.gov.
Sincerely,
- LE Office of Nuclear Reactor Regulation
Enclosure:
Federal Register Notice cc: See enclosed list Listserv
POWER REACTOR LICENSEES AND HOLDERS OF CONSTRUCTION PERMITS IN ACTIVE OR DEFERRED STATUS Arkansas Nuclear One Entergy Operations, Inc.
Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 Mr. Jeremy Browning Site Vice President Entergy Operations, Inc.
Arkansas Nuclear One 1448 S.R 333 Russellville, AR 72802 Beaver Valley Power Station First Energy Nuclear Operating Co.
Docket Nos. 50-334 and 50-412 License Nos. DPR-66 and NPF-73 Mr. Eric A. Larson Beaver Valley Power Station P.O. Box 4, Route 168 Shippingport, PA 15077 Bellefonte Nuclear Power Station Tennessee Valley Authority Docket Nos. 50-438 and 50-439 Construction Permit Nos. CPPR-122 and CPPR-123 Mr. Michael D. Skaggs Senior Vice President, Nuclear Construction Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Braidwood Station Exelon Generation Co., LLC Docket Nos. STN 50-456 and STN 50-457 License Nos. NPF-72 and NPF-77 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Browns Ferry Nuclear Plant Tennessee Valley Authority Docket Nos. 50-259, 50-260 and 50-296 License Nos. DPR-33, DPR-52 and DPR-68 Mr. Joseph W. Shea Vice President, Nuclear licenSing Tennessee Valley Authority 1101 Market Street, EB 9W Chattanooga, TN 37402*2801 Brunswick Steam Electric Plant Carolina Power & Light Co.
Docket Nos. 50-325 and 50-324 License Nos. DPR-71 and DPR-62 Mr. Michael J. Annacone Vice President Carolina Power &Light Company Brunswick Steam Electric Plant P.O. Box 10429 Southport, NC 28461
Byron Station Exelon Generation Co., LLC Docket Nos. STN 50-454 and STN 50-455 License Nos. NPF-37 and NPF-66 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Callaway Plant Union Electric Company Docket No. 50-483 License No. NPF-30 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company Ameren Missouri P.O. Box 620 Fulton, MO 65251 Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. George H. Gellrich Vice President Calvert Cliffs Nuclear Power Plant, LLC Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 Catawba Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-413 and 50-414 License Nos. NPF-35 and NPF-52 Mr. Kelvin Henderson Site Vice President Duke Energy Carolinas, LLC Catawba Nuclear Station 4800 Concord Road York, SC 29745 Clinton Power Station Exelon Generation Co., LLC Docket No. 50-461 License No. NPF-62 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear Clinton Power Station 4300 Winfield Road Warrenville, IL 60555 Columbia Generating Station Energy Northwest Docket No. 50-397 License No. NPF-21 Mr. Mark E. Reddemann Chief Executive Officer Energy Northwest MD 1023 North Power Plant Loop P.O. Box 968 Richland, WA 99352
- 3 Comanche Peak Nuclear Power Plant Luminant Generation Co., LLC Docket Nos. 50-445 and 50-446 License Nos. NPF-87 and NPF-89 Mr. Rafael Flores Senior Vice President and Chief Nuclear Officer Attn: Regulatory Affairs Luminant Generation Company, LLC P.O. Box 1002 Glen Rose, TX 76043 Cooper Nuclear Station Nebraska Public Power District Docket No. 50-298 License No. DPR-46 Mr. Oscar A. Limpias Vice President Nuclear and Chief Nuclear Officer Nebraska Public Power District 72676 648A Avenue P.O. Box 98 Brownville, NE 68321 Crystal River Nuclear Generating Plant Florida Power Corp.
Docket No. 50-302 License No. DPR-72 Terry Hobbs Decommissioning Director Crystal River Nuclear Plant (NA2C) 15760 West Power Line Street Crystal River, FL 34428-6708 Davis-Besse Nuclear Power Station First Energy Nuclear Operating Co.
Docket No. 50-346 License No. NPF-3 Mr. Ray Lieb Site Vice President FirstEnergy Nuclear Operating Company c/o Davis-Besse NPS 5501 N. State Route 2 Oak Harbor, OH 43449-9760 Diablo Canyon Power Plant Pacific Gas & Electric Co.
Docket Nos. 50-275 and 50-323 License Nos. DPR-80 and DPR-82 Mr. Edward D. Halpin Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56, Mail Code 104/6 Avila Beach, CA 93424 Donald C. Cook Nuclear Plant Indiana Michigan Power Company Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 Mr. Lawrence J. Weber Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI49106 Dresden Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-237 and 50-249 License Nos. DPR-19 and DPR-25 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
- 4 Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Rich Anderson Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785 Edwin I. Hatch Nuclear Plant Southern Nuclear Operating Co.
Docket Nos. 50-321 and 50-366 License Nos. DPR-57 and NPF-5 Mr. C.R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
P.O. Box 1295/BI N B038 Birmingham, AL 35201-1295 Fermi Detroit Edison Co.
Docket No. 50-341 License No. NPF-43 Mr. Joseph H. Plona Senior Vice President and Chief Nuclear Officer Detroit Edison Company Fermi 2 - 210 NOC 6400 North Dixie Highway Newport, M I 48166 Fort Calhoun Station Omaha Public Power District Docket No. 50-285 License No. DPR-40 Mr. Louis CortopaSSi Vice President and Chief Nuclear Officer Omaha Public Power District Fort Calhoun Station Mail Stop FC-2-4 9610 Power Lane Blair, NE 68008 Grand Gulf Nuclear Station Entergy Operations, Inc.
Docket No. 50-416 License No. NPF-29 Vice President, Operations Entergy Operations, Inc.
Grand Gulf Nuclear Station P.O. Box 756 Port Gibson, MS 39150 H. B. Robinson Steam Electric Plant Carolina Power & Light Co.
Docket No. 50-261 License No. DPR-23 Mr. William R. Gideon Vice President H.B. Robinson Steam Electric Plant Carolina Power & Light Company 3581 West Entrance Road Hartsville, SC 29550 Hope Creek Generating Station PSEG Nuclear, LLC Docket No. 50-354 License No. NPF-57 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. O. Box 236, Hancocks Bridge, NJ 08038 Indian Point Energy Center Entergy Nuclear Operations, Inc.
Docket Nos. 50-247 and 50-286 License Nos. DPR-26 and DPR-64 Vice President, Operations Entergy Nuclear Operations, Inc.
Indian Point Energy Center 450 Broadway, GSB P.O. Box 249 Buchanan, NY 10511-0249
James A FitzPatrick Nuclear Power Plant Entergy Nuclear Operations, Inc.
Docket No. 50-333 License No. DPR-59 Site Vice President Entergy Nuclear Operations, Inc.
James A FitzPatrick Nuclear Power Plant P.O. Box 110 Lycoming, NY 13093 Joseph M. Farley Nuclear Plant Southern Nuclear Operating Co.
Docket Nos. 50-348 and 50-364 License Nos. NPF-2 and NPF-8 Mr. C. R Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295 Kewaunee Power Station Dominion Energy Kewaunee, Inc.
Docket No. 50-305 License No. DPR-43 Mr. David A Heacock President and Chief Nuclear Officer Dominion Energy Kewaunee, Inc.
Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 LaSalle County Station Exelon Generation Co., LLC Docket Nos. 50-373 and 50-374 License Nos. NPF-11 and NPF-18 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
- 5 Limerick Generating Station Exelon Generation Co., LLC Docket Nos. 50-352 and 50-353 License Nos. NPF-39 and NPF-85 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Millstone Nuclear Power Station Dominion Nuclear Connecticut, Inc.
Docket Nos. 50-336 and 50-423 License Nos. DPR-65 and NPF-49 Mr. David A Heacock President and Chief Nuclear Officer Dominion Nuclear Connecticut, Inc.
Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Monticello Nuclear Generating Plant Northern States Power Company Docket No. 50-263 License No. DPR-22 Mr. Mark A Schimmel Site Vice President Northern States Power Company - Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362-9637 Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and I\\IPF-69 Mr. Christopher Costanzo Vice President Nine Mile Point Nine Mile Point Nuclear Station, LLC P.O. Box 63 Lycoming, NY 13093
- 6 North Anna Power Station Virginia Electric & Power Co.
Docket Nos. 50-338 and 50-339 License Nos. NPF-4 and NPF-7 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Oconee Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-269, 50-270 and 50-287 License Nos. DPR-38, DPR-47 and DPR-55 Mr. Scott Batson Vice President, Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672 Oyster Creek Nuclear Generating Station Exelon Generation Co., LLC Docket No. 50-219 License No. DPR-16 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Palisades Nuclear Plant Entergy Nuclear Operations, Inc.
Docket No. 50-255 License No. DPR-20 Vice President, Operations Entergy Nuclear Operations, Inc.
Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, MI 49043 Palo Verde Nuclear Generating Station Arizona Public Service Company Docket Nos. STN 50-528, STN 50-529 and STN 50-530 License Nos. NPF-41, NPF-51 and NPF-74 Mr. Randall K. Edington Executive Vice President Nuclear and Chief Nuclear Officer Arizona Public Service Co.
P.O. Box 52034, MS 7602 Phoenix, AZ 85072-2034 Peach Bottom Atomic Power Station Exelon Generation Co., LLC Docket Nos. 50-277 and 50-278 License Nos. DPR-44 and DPR-56 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Perry Nuclear Power Plant FirstEnergy Nuclear Operating Co.
Docket No. 50-440 License No. NPF-58 Mr. Vito A. Kaminskas Site Vice President - Nuclear - Perry FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant 10 Center Road, A290 Perry, OH 44081
- 7 Pilgrim Nuclear Power Station Unit No.1 Entergy Nuclear Operations, Inc.
Docket No. 50-293 License No. DPR-35 Mr. John Dent, Jr.
Vice President and Site Vice President Entergy Nuclear Operations, Inc.
Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508 Point Beach Nuclear Plant NextEra Energy Point Beach, LLC Docket Nos. 50-266 and 50-301 License Nos. DPR-24 and DPR-27 Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC Point Beach Nuclear Plant, Units 1 & 2 6610 Nuclear Road Two Rivers, WI 54241-9516 Prairie Island Nuclear Generating Plant Northern States Power Co. Minnesota Docket Nos. 50-282 and 50-306 License Nos. DPR-42 and DPR-60 Mr. James E. Lynch Site Vice President Northern States Power Company - Minnesota Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 Quad Cities Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-254 and 50-265 License Nos. DPR-29 and DPR-30 Mr. Michael J. Paciliio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 R E. Ginna Nuclear Power Plant RE. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Joseph E. Pacher Vice President RE. Ginna Nuclear Power Plant, LLC RE. Ginna Nuclear Power Plant 1503 Lake Road Ontario, NY 14519 River Bend Station Entergy Operations, Inc.
Docket No. 50-458 License No. NPF-47 Vice President, Operations Entergy Operations, Inc.
River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear, LLC.
Docket Nos. 50-272 & 50-311 License Nos. DPR-70 and DPR-75 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P.O. Box 236, Hancocks Bridge, NJ 08038 San Onofre Nuclear Generating Station Southern California Edison Company Docket Nos. 50-361 and 50-362 License Nos. NFP-10 and NFP-15 Mr. Peter T. Dietrich Senior Vice President and Chief Nuclear Officer Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92674-0128
Seabrook Nuclear Plant NextEra Energy Seabrook, LLC Docket No 50-443 License No. NFP-86 Mr. Kevin Walsh Vice President, Seabrook Nuclear Plant clo Mr. Michael O'Keefe NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 03874 Sequoyah Nuclear Plant Tennessee Valley Authority Docket Nos. 50-327 and 50-328 License Nos. DPR-77 and DPR-79 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Shearon Harris Nuclear Power Plant Carolina Power & Light Co.
Docket No. 50-400 License No. NPF-63 Mr. George T. Hamrick Vice President Carolina Power and Light Company Shearon Harris Nuclear Power Plant P.O. Box 165, Mail Zone 1 New Hill, NC 27562-0165 South Texas Project STP Nuclear Operating Co.
Docket Nos. 50-498 and 50-499 License Nos. NPF-76 and NPF-80 Mr. Dennis L. Koehl President and CEO/CNO STP Nuclear Operating Company South Texas Project Electric Generating Station P.O. Box 289 Wadsworth, TX 77483 St. Lucie Plant Florida Power & Light Co.
Docket Nos. 50-335 and 50-389 License Nos. DPR-67 and NPF-16 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy P.O. Box 14000 700 Universe Boulevard Juno Beach, FL 33408-0420 Surry Power Station Virginia Electric & Power Co.
Docket Nos. 50-280 and 50-281 License Nos. DPR-32 and DPR-37 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear Virginia Electric & Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Susquehanna Steam Electric Station PPL Susquehanna, LLC Docket Nos. 50-387 and 50-388 License Nos. NPF-14 and NPF-22 Mr. Timothy S. Rausch Senior Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467
- 9 Three Mile Island, Unit 1 Exelon Nuclear Docket No. 50-289 License No. DPR-50 Mr. Michael J. Pacillio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Office (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Turkey Point Florida Power & Light Co.
Docket Nos. 50-250 and 50-251 License Nos. DPR-31 and DPR-41 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy P.O. Box 14000 700 Universe Boulevard Juno Beach, FL 33408-0420 Vermont Yankee Nuclear Power Station Entergy Nuclear Operations, Inc.
Docket No. 50-271 License No. DPR-28 Site Vice President, Operations Entergy Nuclear Operations, Inc.
Vermont Yankee Nuclear Power Station P.O. Box 250, Governor Hunt Road Vernon, VT 05354 Virgil C. Summer Nuclear Station South Carolina Electric &Gas Co.
Docket No. 50-395 License No. NPF-12 Mr. Thomas D. Gatlin Vice President Nuclear Operations South Carolina Electric &Gas Company Virgil C. Summer Nuclear Station Post Office Box 88, Mail Code 800 Jenkinsville, SC 29065 Vogtle Electric Generating Plant Southern Nuclear Operating Co.
Docket Nos. 50-424 and 50-425 License Nos. NPF-68 and NPF-81 Mr. C.R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
P.O. Box 1295/Bin 038 Birmingham, AL 35201 Waterford Steam Electric Station Entergy Operations, Inc.
Docket No. 50-382 License No. NPF-38 Vice President, Operations Entergy Operations, Inc.
Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-0751 Watts Bar Nuclear Plant, Units 1 and 2 Watts Bar Nuclear Plant, Unit 1 Tennessee Valley Authority Docket No. 50-390 License No. NPF-90 Watts Bar Nuclear Plant, Unit 2 Tennessee Valley Authority Docket No. 50-391 Construction Permit No. CPPR No. 092 Mr. Joseph W. Shea Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37402-2801
- 10 William B. McGuire Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-369 and 50-370 License Nos. NPF-9 and NPF-17 Mr. Steven D. Capps Duke Energy Carolinas, LLC McGuire Nuclear Station 12700 Hagers Ferry Road Huntersville, NC 28078-8985 Wolf Creek Generating Station Wolf Creek Nuclear Operating Corp.
Docket No. 50-482 License No. NPF-42 Mr. Matthew W. Sunseri President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839
[7590-01-P]
NUCLEAR REGULATORY COMMISSION
[NRC-2013-0038]
Electric Power Research Institute; Seismic Evaluation Guidance AGENCY: U.S. Nuclear Regulatory Commission.
ACTION: Endorsement letter; issuance.
SUMMARY
- The U.S. Nuclear Regulatory Commission (NRC) is issuing an endorsement letter of Electric Power Research Institute (EPRI) Report, "Seismic Evaluation Guidance: EPRI Guidance for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1:
Seismic," Draft Report, hereafter referred to as the EPRI Guidance. This EPRI Guidance provides additional information, to be used in combination with the staff-endorsed Screening Prioritization and Implementation Details (SPID) report1, on an acceptable strategy to implement interim actions in accordance with item (6) of the Requested Information in Enclosure 1 "Recommendation 2.1: Seismic," of the NRC staff's request for information (SO.S4(f) letter),
"Request for Information Pursuant to Title 10 of the Code of Federal Regulations (10 CFR), Part SO.S4(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of InSights from the Fukushima Dai-ichi Accident," dated March 12, 2012. In addition, in its April 9, 2013 letter, the Nuclear Energy Institute (!\\lEI) requested modifications to the schedule The SPID report is available in the NRC's Agencywide Documents Access and Management System (ADAMS) under Accession No. ML12333A170. The staff endorsement letter for the SPID report is available in ADAMS under Accession No. ML12319A074.
The NElletter, with attachments, is available in ADAMS in a package with Accession No. ML13101A345.
established in the staffs 50.54(f) letter. The NRC staff has found the schedule modifications to be acceptable since they account for completion of the EPRI central and eastern United States (CEUS) ground motion model (GMM) update, completion of potential interim actions provided in the EPRI Guidance, and limited available seismic resources.
ADDRESSES: You may access information related to this document, which the NRC possesses and is publicly available, by searching on http://wwwregu/ations.gov under Docket ID NRC-2013-0038.
Federal Rulemaking Web site: Go to http://wwwregu/ations.gov and search for Docket ID NRC-2013-0038. Address questions about NRC dockets to Carol Gallagher; telephone: 301-492-3668; e-mail: Carol.Gallagher@nrc.gov.
NRC's Agencywide Documents Access and Management System (ADAMS):
You may access publicly-available documents online in the NRC Library at http://wwwnrc.aov/readina-rmladams.f7tm/. To begin the search, select "ADAMS Public Documents" and then select "Begin Web-based ADAMS Search." For problems with ADAMS, please contact the NRC's Public Document Room (PDR) reference staff at 1-800-397-4209, 301-415-4737, or bye-mail to PDRResources@nrc.qov. The NRC staffs endorsement letter of the EPRI Guidance is available under ADAMS Accession No. ML13106A331. The NRC staff's request for information dated March 12,2012, is available under ADAMS Accession No. ML12053A340.
NRC's PDR: You may examine and purchase copies of public documents at the NRC's PDR, Room 01-F21, One White Flint North, 11555 Rockville Pike, Rockville, Maryland 20852.
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FOR FURTHER INFORMATION CONTACT: Ms, Lisa M. Regner, Japan Lessons-Learned Project Directorate, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; telephone: 301-415-1906; e-mail: Lisa.Regner@nrc.gov.
SUPPLEMENTARY INFORMATION:
I. Background Information Pursuant to 10 CFR Part 50,54(f), the NRC issued a 50.54(f) letter dated March 12, 2012, regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force (NTTF) Review of Insights from the Fukushima Dai-ichi Accident. 3 The NRC issued the 50.54(f) letter following the staff's evaluation of the earthquake and tsunami, and resulting nuclear accident, at the Fukushima Dai-ichi nuclear power plant in March 2011. Enclosure 1 to the 50.54(f) letter requests licensees and holders of construction permits under 10 CFR Part 50, "Domestic Licensing of Production and Utilization Facilities," to reevaluate the seismic hazards at their sites using present-day NRC requirements and guidance, and to identify actions taken or planned to address plant-specific vulnerabilities associated with the updated seismic hazards.
Based on this information, the NRC staff will determine if additional regulatory actions are necessary to protect against the updated hazards.
By letter dated February 15, 2013, the NRC staff issued an endorsement letter, with clarifications, of EPRI-1025287, "Seismic Evaluation Guidance: Screening, Prioritization, and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," referred to as the SPID report. This SPID report describes The NTTF Report is available under ADAMS Accession No. ML111861807, The SO.S4(f) letter is available under ADAMS Accession No, ML12053A340,
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strategies for the screening, prioritization, and implementation of seismic risk evaluations that are acceptable to the NRC staff, and will assist nuclear power reactor licensees when responding to Enclosure 1 of the SO.S4(f) letter.
By letter dated April 9, 2013, the NEI submitted additional guidance to be used to supplement the SPID report for NRC endorsement. The letter also documented the industry's proposed plan to update the GMM for CELIS plants, and proposed modifications to the schedule for plant seismic reevaluations established in the SO.54(f) letter. The NEI letter, the EPRI Guidance, and additional attachments addressing proposed schedule changes are available in ADAMS under package Accession No. ML 13101 A34S.
II. Ground Motion Model The SO.S4(f) letter requested that the licensees whose plants are located in the CELIS use NUREG-211S, "Central and Eastern Llnited States [CELIS} Seismic Source Characterization for Nuclear Facilities" and the appropriate EPRI (2004, 2006) GMM to characterize the seismic hazard for their sites. The industry is currently completing a study to update the EPRI (2004, 2006) GMM based on current data and new ground motion prediction equations developed by seismic experts.
The NRC staff has interacted with NEI, EPRI, and other stakeholders in public meetings since November 2012, for status updates on industry's efforts to update the CELIS GMM. By letter dated January 31, 2013, the NEI transmitted the EPRI draft document, "Draft - EPRI (2004, 2006) Ground Motion Model (GMM) Review Project" to the NRC, requesting review and approval by February 27, 2013. For the update of its earlier GMM, EPRI used a significant amount of additional data, conducted field investigations, and used more recent methods than were previously available. In performing the GMM update, EPRI has also addressed the
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concerns of an independent peer review panel, which is an important part of the Senior Seismic Hazard Analysis Committee (SSHAC) guidelines (these guidelines are discussed in NRC's NUREG 2117, "Practical Implementation Guidelines for SSHAC Level 3 and 4 Hazard Studies").
Following a review of the NEI submittal, in a public meeting on February 28, 2013, the staff expressed concern with EPRI's treatment of uncertainty and the level of documentation in the proposed updated GMM. The staff formally documented these concerns by letter dated March 20, 2013.
Subsequently, in a public meeting on March 26, 2013, industry presented a revision of its updated EPRI GMM, which demonstrated significant progress toward addressing the staff's concerns with respect to the treatment of uncertainty. Industry also proposed a schedule, including further interactions with NRC staff, for completing the development and documentation of the updated EPRI GMM. In order to complete its update of the EPRI GMM and accompanying documentation, and to allow time for the development of site-specific seismic hazard curves, industry proposed a 6 month delay from the schedule outlined in the 50.54(f) letter for the submittal of the seismic hazard reevaluations for CEUS plants.
The staff agrees that updated models, methods, and data will provide licensees with the most current information in order to perform the seismic hazard evaluations requested by the 50.54(f) letter.
III. EPRI Guidance The EPRI Guidance document provides licensees with information on the performance of an Expedited Seismic Evaluation Process. The Expedited Seismic Evaluation Process is a screening, evaluation, and equipment modification process to be conducted by licensees to
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provide additional seismic margin and expedite plant safety enhancements while more detailed and comprehensive plant seismic risk evaluations are being performed.
The Expedited Seismic Evaluation Process evaluations would be conducted on plants with a new seismic hazard that exceeds their current seismic design basis, and necessary modifications would be made to certain core and containment cooling components used during the initial plant coping time following a severe external event. The letter states that CEUS licensees will complete non-outage-related Expedited Seismic Evaluation Process equipment modifications by December 2016. Western United States (WUS) licensees will complete non-outage-related Expedited Seismic Evaluation Process equipment modifications by June 2018.
After review of industry's proposed EPRI Guidance, the NRC staff believes that the evaluations and potential near-term equipment modifications associated with the Expedited Seismic Evaluation Process will provide an important demonstration of seismic margin and enhance plant safety while more detailed plant risk evaluations are being conducted by licensees. The staff further concludes that the seismic evaluation guidance for the EPRI Guidance provides an appropriate methodology for licensees to implement and complete the Expedited Seismic Evaluation Process according to the schedule provided in the letter.
IV. Schedule Modifications The NEI has proposed two adjustments to the seismic hazard reevaluations at nuclear power plant sites: (1) to complete the update of the EPRI GMM for the CEUS, and (2) to implement the EPRI Guidance. These proposed changes affect the schedule outlined in the 50.54(f) letter.
First, the industry has requested additional time to complete the updated EPRI GMM project, including documentation and interactions with the NRC staff. The project
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documentation is scheduled to be submitted to the NRC on June 3, 2013. Pending approval by the staff, the CEUS licensees will use the updated model to complete the site-specific seismic hazard reevaluations specified in Enclosure 1 to the SPID guidance. Currently, the hazard submittals are requested by September 2013; however, industry has requested to submit the hazard evaluations by March 31,2014. The industry stated in its letter that it will not delay submittal of items 3.a. "Description of Subsurface Materials and Properties," and 3.b.
"Development of Base Case Profiles and Nonlinear Material Properties" of Section 4 of to the SPI D guidance. Licensees intend to submit these items in September 2013 for the staff's review. This will allow the staff to begin its review in accordance with the original schedule and complete a significant portion of the Section 4 review on time.
The staff finds that the schedule modifications discussed above for CEUS plants are acceptable because the updated GMM will provide the CEUS operating nuclear plant fleet with a model developed using the most recent data and methodologies available for their seismic hazard reevaluations. Additionally, the partial submittal in September 2013 will allow the staff to complete a portion of its CEUS review as originally scheduled by the 50.54(f) letter.
Second, the industry has requested modifications to the 50.54(f) letter schedule to allow for implementation of the EPRI Guidance interim actions for those nuclear power plants where the reevaluated seismic hazard exceeds the plant's design basis. These schedule modifications allow for completion of Expedited Seismic Evaluation Process for CEUS plants by December 2016, if the modifications do not require a plant shutdown to access equipment. For WUS plants, the Expedited Seismic Evaluation Process modifications will be completed by June 2018, if the modifications do not require a plant shutdown to access equipment.
For plants requiring a seismic risk analysis (i.e., those with a reevaluated seismic hazard that exceeds the current seismic design basis), the 50.54(f) letter states that the staff will perform a prioritization for both the CEUS and WUS plants into two priority groups, and possibly
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a third, if needed. Under industry's proposed schedule, the higher priority CEUS plants will complete their risk evaluations by June 2017 (originally scheduled for October 2016). This delay is primarily due to the additional time needed to complete the EPRI GMM update project.
The second group of CEUS plants will complete their risk evaluations by December 2019. This is about a two-year delay from the schedule specified in the 50.54(f) letter for the lower priority plants to complete their risk evaluations. Conversely, the letter proposes an earlier completion date of June 2017 for the risk evaluations for the higher priority WUS plants.
The staff finds that the schedule modifications discussed above for CEUS and WUS nuclear power plants are acceptable, since the Expedited Seismic Evaluation Process provides for near-term seismic evaluations and expedited equipment modifications at the plants that will offer additional assurance that plants will operate safely during a beyond design basis seismic event. Furthermore, the schedule modifications account for limited seismic resources available to both the NRC and the industry. The schedule modifications provide for completion of the higher priority CEUS plant risk evaluations by the end of June 2017, which is not a significant extension of the original 50.54(f) letter schedule of October 2016. In addition, the schedule proposes an earlier completion date for the higher priority risk evaluations for the WUS plants.
V. Basis for Endorsement The NRC staff interacted with the stakeholders on development of the EPRI Guidance report with a focus on guidance on potential interim actions to be implemented for plants where the reevaluated seismic hazard exceeds the current seismic design basis. The EPRI Guidance report is the product of considerable interaction between the NRC, NEI, EPRI, and other
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stakeholders at five public meetings4 over a 5-month period. These interactions and the insights gained from the meetings allowed for the development of this document in a very short time frame. The meetings helped develop the expectations for how licensees would perform potential interim actions after updating their seismic hazard information. At each meeting, the NRC staff provided its comments on the current version of the EPRI Guidance and discussed with stakeholders subsequent proposed revisions to the document. This iterative process, over several months, resulted in the final version of the document. The NRC staff's endorsement of the EPRI Guidance is based on this cumulative development process resulting from the interactions between stakeholders and the NRC staff. This is the same process employed successfully in the development of the SPID guidance.
The staff has determined that the EPRI Guidance will provide an important demonstration of seismic margin and enhanced plant safety through evaluations and potential near-term modifications of certain core and containment cooling equipment while more comprehensive plant seismic risk evaluations are being performed. The NRC staff also has determined that the schedule modifications provided in the NEI's April 9, 2013, letter are acceptable because the schedule accounts for seismic resource limitations, EPRl's completion of the update to the GMM for the CEUS, and implementation of the EPRI Guidance evaluations and actions.
VI. 8ackfitting and Issue Finality This endorsement letter does not constitute backfitting as defined in 10 CFR 50.109, "Backfitting" (the Back'fit Rule). This endorsement letter provides additional guidance on an
~...............
Public meetings were held on November 2 and 14 and December 13, 2012; and February 14 and March 26, 2013
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acceptable method for implementing the interim actions described in item (6) of the Requested Information in Enclosure 1, "Recommendation 2.1: Seismic," of the 50.54(f) letter. Licensees and construction permit holders may voluntarily use the guidance in the EPRI Guidance to comply with the requested interim action portion of the 50.54(f) letter. Methods, analyses, or solutions that differ from those described in the EPRI Guidance report may be deemed acceptable if they provide sufficient basis and information for the NRC staff to verify that the proposed alternative is acceptable.
VII. Congressional Review Act This endorsement letter is a rule as designated in the Congressional Review Act (5 U.S.C. 801-808). The Office of Management and Budget has found that this is a major rule in accordance with the Congressional Review Act.
Dated at Rockville, Maryland, this 7~ day of ~ 2013.
For the Nuclear Regulatory cIo'mmission c/~~
2j 7
Eric J. L~ s, Director Office o(Nuciear Reactor Regulation
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J. Pollock
-6 If you or your staff have additional questions, please contact my office; alternatively, you can contact Mrs. Lisa Regner of my staff by phone at 301-415-1906, or bye-mail at Lisa.Regner@nrc.gov.
Sincerely, Ira!
Eric J. Leeds, Director Office of Nuclear Reactor Regulation
Enclosure:
Federal Register Notice cc: See enclosed list Listserv DISTRIBUTION:
See next page ADAMS Accession No.: ML13114A949 (Pkg.); ML13106A331 (Letter); ML13109A594 (FRN1*via e-mail OFFICE LA: NRRIDORL
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PM: NRR/,ILD/PMB NRO/DSEA*
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- NAME KGoldstein CHsu LRegner CMunson NChokshi DATE 05/01/2013 04/24/2013 04/19/2013 05/02/2013 05/02/2013 OFFICE D: NRRlDE*
BC:NRR/JLD/PMB OGC*
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D: NRR NAME PHiland MMitcheli GMizuno DSkeen ELeeds DATE 04/29/2013 04/26/2013 05/02/2013 05/03/2013 05/07/2013 OFFICIAL RECORD COpy
Letter to Joseph E. Pollock from Eric J. Leeds dated May 7,2013
SUBJECT:
ELECTRIC POWER RESEARCH INSTITUTE FINAL DRAFT REPORT XXXXXX, "SEISMIC EVALUATION GUIDANCE: AUGMENTED APPROACH FOR THE RESOLUTION OF FUKUSHIMA NEAR-TERM TASK FORCE RECOMMENDATION 2.1: SEISMIC" AS ACCEPTABLE ALTERNATIVE TO THE MARCH 12, 2012, INFORMATION REQUEST FOR SEISMIC REEVALUATIONS DISTRIBUTION:
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