Letter Sequence Approval |
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Results
Other: L-MT-13-015, Plants Overall Integrated Plan in Response to March 12. 2012 Commission Order Modifying Licenses with Regard to Requirements for Reliable Hardened Containment Vents (Order Number EA-12-050), L-MT-13-017, Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), L-MT-13-079, Monticellos First Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), L-MT-14-014, Plants Second Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049), L-MT-14-073, Plants Third Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), L-MT-15-004, Fourth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Mitigation Strategies for Beyond-Design-Basis External Events (EA-12-049), L-MT-15-047, Update of Information Related to NRC Order Update of Information Related to NRC Order EA-12-049, Mitigation Strategies for Beyond-Design-Basis External Events, L-MT-15-059, Fifth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), L-MT-16-009, Sixth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), L-MT-16-038, Seventh Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049), ML13197A116, ML13220A139, ML14290A367, ML15072A098
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MONTHYEARL-MT-13-015, Plants Overall Integrated Plan in Response to March 12. 2012 Commission Order Modifying Licenses with Regard to Requirements for Reliable Hardened Containment Vents (Order Number EA-12-050)2013-02-28028 February 2013
Plants Overall Integrated Plan in Response to March 12. 2012 Commission Order Modifying Licenses with Regard to Requirements for Reliable Hardened Containment Vents (Order Number EA-12-050)
Project stage: Other
L-MT-13-017, Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2013-02-28028 February 2013
Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
Project stage: Other
ML13182A0512013-07-0202 July 2013
Online Reference Portal for Review of Mitigation Strategies Submittal in Response to Order EA-12-049
Project stage: Approval
ML13197A1162013-07-15015 July 2013
Online Reference Portals for NRC Review of Mitigating Strategies Submittals (Order EA-12-049)
Project stage: Other
L-MT-13-079, Monticellos First Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2013-08-28028 August 2013
Monticellos First Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
Project stage: Other
ML13220A1392013-11-25025 November 2013
Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 - Mitigation Strategies
Project stage: Other
L-MT-14-014, Plants Second Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049)2014-02-28028 February 2014
Plants Second Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049)
Project stage: Other
L-MT-14-073, Plants Third Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2014-08-28028 August 2014
Plants Third Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
Project stage: Other
ML14290A3672014-10-22022 October 2014
Plan for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Pool Instrumentation Related to Order EA-12-049 and EA-12-051
Project stage: Other
ML14294A0612014-11-21021 November 2014
Relaxation of Certain Schedules Requirements for Order EA-12-049 Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events
Project stage: Approval
L-MT-15-004, Fourth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Mitigation Strategies for Beyond-Design-Basis External Events (EA-12-049)2015-02-24024 February 2015
Fourth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Mitigation Strategies for Beyond-Design-Basis External Events (EA-12-049)
Project stage: Other
ML15072A0982015-03-17017 March 2015
Report for the Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Pool Instrumentation Related to Orders EA-12-049 and EA-12-051
Project stage: Other
L-MT-15-059, Fifth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-08-20020 August 2015
Fifth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
Project stage: Other
L-MT-15-047, Update of Information Related to NRC Order Update of Information Related to NRC Order EA-12-049, Mitigation Strategies for Beyond-Design-Basis External Events2015-10-12012 October 2015
Update of Information Related to NRC Order Update of Information Related to NRC Order EA-12-049, Mitigation Strategies for Beyond-Design-Basis External Events
Project stage: Other
L-MT-16-009, Sixth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2016-02-22022 February 2016
Sixth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
Project stage: Other
L-MT-16-038, Seventh Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049)2016-08-19019 August 2016
Seventh Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order No. EA-12-049)
Project stage: Other
L-MT-17-066, Supplemental Information for the Notification of Full Compliance of Required Action for NRC Order EA-12-049 Mitigation Strategies for Beyond-Design-Basis External Events2017-09-28028 September 2017
Supplemental Information for the Notification of Full Compliance of Required Action for NRC Order EA-12-049 Mitigation Strategies for Beyond-Design-Basis External Events
Project stage: Supplement
2014-02-28
[Table View] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mrs. Karen D. Fili Site Vice-President November 21, 2014 Northern States Power Company - Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362-9637
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT-RELAXATION OF CERTAIN SCHEDULE REQUIREMENTS FOR ORDER EA-12-049 "ISSUANCE OF ORDER TO MODIFY LICENSES WITH REGARD TO REQUIREMENTS FOR MITIGATION STRATEGIES FOR BEYOND DESIGN BASIS EXTERNAL EVENTS" (TAC NO. MF0923)
Dear Mrs. Fili:
By letter dated March 12, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12054A735), the U.S. Nuclear Regulatory Commission (NRC) ordered Northern States Power Company (NSPM, the licensee), a Minnesota corporation, doing business as Xcel Energy, to take certain actions at Monticello Nuclear Generating Plant (Monticello), associated with the Fukushima Near-Term Task Force Recommendations. Order EA-12-049 directed that actions be taken by licensees to develop and implement strategies to maintain or restore core cooling, reactor coolant system inventory, containment cooling, and spent fuel pool cooling capabilities during beyond design basis external events (BDBEEs). By letter dated March 12, 2012 (ADAMS Accession No. ML12054A694), the NRC ordered NSPM to install a reliable hardened containment vent system at Monticello, via Order EA-12-050. By letter dated June 6, 2013 (ADAMS Accession No. ML13143A321), the NRC superseded the requirements of Order EA-12-050, with Order EA-13-109, which requires the installation of reliable hardened containment vents capable of operation under severe accident conditions.
The compliance date requirements of Order EA-13-109, Phase I (wetwell vent), extend beyond those of Order EA-12-049 for Monticello.
Section IV of Order EA-12-049 states that licensees proposing to deviate from requirements of the order may request that the Director, Office of Nuclear Reactor Regulation, relax or rescind certain requirements. By letter dated October 1, 2014 (ADAMS Accession No. ML14289A512),
the licensee requested schedule relaxation from the final compliance dates of Order EA-12-049.
Specifically, the licensee requested an extension of one refueling cycle for Monticello, to complete full implementation of the hardened severe accident capable containment wetwell vent. The extension request was proposed because the installation of a containment wetwell vent that meets the requirements of Order EA-13-109, Phase I, will take additional time to complete, as compared to the compliance dates associated with Order EA-12-049.
To allow the time to design and install the severe accident capable hardened containment wetwell vent, and integrate it into the mitigating strategies required for Order EA-12-049, the licensee requests relaxation of the Order EA-12-049 full implementation date from the
completion of the spring 2015 refueling outage for Monticello, to the completion of the spring 2017 refueling outage.
In light of the facts presented in the licensee's letter dated October 1, 2014, the NRC staff has determined that the licensee has presented good cause for a relaxation of the order implementation date. The licensee proposes the equipment and modifications required to implement the mitigating strategies required by Order EA-12-049 will be completed and available for use in accordance with the original implementation schedule requirements, except for a fully severe accident capable hardened containment wetwell vent. Until the full containment wetwell venting capability required by Order EA-13-1 09 is implemented, Monticello will maintain a containment venting strategy in accordance with existing torus (wetwell) venting capabilities. By completing the specified plant configuration changes (other than the severe accident capable containment wetwell vent), and maintaining the ability to vent containment in accordance with existing capabilities, a significant portion of the desired increase in capability to respond to a BDBEE will be realized within the timeframe specified in Order EA-12-049. The requested extension allows the licensee sufficient time to install the enhanced containment wetwell vent capability necessary for full Order EA-12-049 compliance within an appropriate amount of time, consistent with the requirements of Order EA-13-1 09. The NRC staff also considered that, following the accident at Fukushima Dai-ichi, the NRC concluded that a sequence of events such as the Fukushima Dai-ichi accident is unlikely to occur in the United States based on the current regulatory requirements and existing plant capabilities. The NRC staff therefore approves the relaxation of the order implementation date.
Accordingly, based upon the authority granted to the Director, Office of Nuclear Reactor Regulation, the requirement of the order for full implementation is relaxed until the completion of the spring 2017 refueling outage for Monticello, to allow the licensee sufficient time to implement a severe accident capable hardened containment wetwell vent.
If you have any questions, please contact Peter Bamford at 301-415-2833.
Sincerely, U/)1 tfJ-----
William M. Dean, Director Office of Nuclear Reactor Regulation Docket No. 50-263 cc: Listserv
ML14294A061 OFFICE NRR/JLD/JOMB/PM NRR/JLD/LA NAME PBamford Slent DATE 10/21/2014 10/21/2014 OFFICE OE OGC NAME RFretz DCylkowski DATE 10/29/2014 11/13/2014 Sincerely, IRA/
William M. Dean, Director Office of Nuclear Reactor Regulation RidsNrrLASLent Resource PBamford, NRR/JLD RidsNrrDorllpl3-1 Resource CRoque-Cruz, NRR/JLD NRR/JLD/JCBB/BC NRR/JLD/JOMB /BC(A)
SBailey CRoque-Cruz 10/22/2014 10/27/2014 NRR/JLD/0 NRR/D JDavis (MFranovich for) WDean 11/08/2014 11/21/2014
