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| | number = ML17037B598 | | | number = ML17037B598 |
| | issue date = 02/28/1978 | | | issue date = 02/28/1978 |
| | title = Nine Mile Point Unit 1 - Letter Regarding Mark I Containment Short Term Program Safety Evaluation Report and a Sample Federal Register Notice | | | title = Letter Regarding Mark I Containment Short Term Program Safety Evaluation Report and a Sample Federal Register Notice |
| | author name = Stello V | | | author name = Stello V |
| | author affiliation = NRC/NRR | | | author affiliation = NRC/NRR |
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Category:Federal Register Notice
MONTHYEARML21294A3762021-11-16016 November 2021 Federal Register Notice for Order Approving Indirect Transfer of Licenses ML21145A0142021-05-26026 May 2021 Fleet and the Associated Independent Spent Fuel Storage Installations - Extension of Comment Period for Notice of Consideration of Approval of Transfer of Licenses and Conforming Amendments and Opportunity to Request a Hearing EPID L-2021-L ML21145A0152021-05-26026 May 2021 FRN Exelon License Transfer - Extend Comment Period ML21102A0752021-04-28028 April 2021 Fleet - Notice of Consideration of Approval of Transfer of Licenses and Conforming Amendments and Opportunity for a Hearing (FRN) ML21061A0672021-04-13013 April 2021 FRN, Exemption from the Requirements of 10 CFR 2.109(b) Related to Submission of Subsequent License Renewal Application ML21060A5962021-03-0909 March 2021 FRN - Notice of Issuance of Multiple COVID-19 Exemptions Regarding 10 CFR Part 26 for February 2021 ML20269A2002020-09-30030 September 2020 Request to Use a Provision of Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI (EPID L2020-LLR-0117 ML20243A0002020-09-23023 September 2020 FRN - Notice of Issuance of Multiple Exemptions Regarding Various Parts of 10 CFR Due to COVID-19 Impacts for August 2020 ML20156A4002020-06-30030 June 2020 Individual Notice of Consideration of Issuance of Amendments to Renewed Facility Operating Licenses, Proposed No Significant Hazards Consideration Determination, Opportunity for Hearing ML20035C4082020-02-18018 February 2020 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 02/25/2020 ML19337A0312019-12-11011 December 2019 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 12/17/2019 ML19238A3692019-09-0303 September 2019 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 09/10/2019 ML19085A2172019-03-29029 March 2019 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 04/09/2019 ML18351A0022019-01-0202 January 2019 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 01/02/2019 NRC-2018-0287, Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 01/02/20192019-01-0202 January 2019 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: 01/02/2019 ML18304A3042018-11-23023 November 2018 Federal Register Notice: Environmental Assessment and Finding of No Significant Impact Regarding Exelon Generation Company, LLC License Amendment Request to Change Emergency Plan Staffing NRC-2018-0262, Federal Register Notice: Environmental Assessment and Finding of No Significant Impact Regarding Exelon Generation Company, LLC License Amendment Request to Change Emergency Plan Staffing2018-11-23023 November 2018 Federal Register Notice: Environmental Assessment and Finding of No Significant Impact Regarding Exelon Generation Company, LLC License Amendment Request to Change Emergency Plan Staffing ML18002A3812018-01-24024 January 2018 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Consideration and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: February 6, NRC-2018-0011, Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Consideration and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: Februar2018-01-24024 January 2018 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Consideration and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: February 6, ML17143A1182017-05-24024 May 2017 FRN Individual Notice of Consideration of Issuance of Amendments to Facility Operating Licenses, Proposed No Sig. Hazards Consideration, and Opportunity for Hearing (CAC Nos. MF9720-21) ML16271A0922016-09-28028 September 2016 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: October 11, 2016 NRC-2016-0202, Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: September 27, 20162016-09-19019 September 2016 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: September 27, 2016 ML16257A5172016-09-19019 September 2016 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: September 27, 2016 ML16004A1182016-01-0707 January 2016 FRN, Issuance of Confirmatory Orders, Authorize Use of Preemption Authority Granted Under Provisions of Section 161A of the Atomic Energy Act of 1954, as Amended ML15356A5992015-12-29029 December 2015 Biweekly Federal Register Notice - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: January 5, 2016 ML15320A2842015-12-0808 December 2015 Final Environmental Assessment and Finding of No Significant Impact Related to Preemption Authority Requests ML15328A5502015-11-27027 November 2015 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: December 8, 2015 NRC-2015-0269, Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: December 8, 20152015-11-27027 November 2015 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: December 8, 2015 ML15279A3362015-10-23023 October 2015 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Considerations and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: November 3, NRC-2015-0240, Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Considerations and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: Novemb2015-10-23023 October 2015 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Considerations and Containing SUNSI and Order Imposing Procedures for Access to SUNSI - Publication Date: November 3, ML15218A6252015-08-14014 August 2015 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: August 14, 2015 ML15148A3762015-06-0101 June 2015 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Published June 9, 2015 ML15120A2272015-05-0101 May 2015 Biweekly FRN - Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: May 12, 2015 NRC-2015-0009, G20110262 - FRN - Paul Gunter and Kevin Kamps Letter 2.206 - Immediately Suspend the Operating License of General Electric Boiling Water Reactors Mark I Units2015-01-15015 January 2015 G20110262 - FRN - Paul Gunter and Kevin Kamps Letter 2.206 - Immediately Suspend the Operating License of General Electric Boiling Water Reactors Mark I Units ML14335A6302015-01-15015 January 2015 G20110262 - Final Response to Paul Gunter and Kevin Kamps Letter 2.206 - Immediately Suspend the Operating License of General Electric Boiling Water Reactors Mark I Units ML14335A6482015-01-15015 January 2015 G20110262 - FRN - Paul Gunter and Kevin Kamps Letter 2.206 - Immediately Suspend the Operating License of General Electric Boiling Water Reactors Mark I Units ML14303A3812014-10-31031 October 2014 Biweekly Sholly FRN - Application and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations - Publication Date: November 12, 2014 NRC-2014-0228, Federal Register Notice License Amendment Application; Opportunity to Comment, Request a Hearing, and Petition for Leave to Intervene; Order for Exelon Generation Company, LLC, Nine Mile Point Nuclear Station, Units 1 and 22014-10-21021 October 2014 Federal Register Notice License Amendment Application; Opportunity to Comment, Request a Hearing, and Petition for Leave to Intervene; Order for Exelon Generation Company, LLC, Nine Mile Point Nuclear Station, Units 1 and 2 ML14282A6282014-10-21021 October 2014 Federal Register Notice License Amendment Application; Opportunity to Comment, Request a Hearing, and Petition for Leave to Intervene; Order for Exelon Generation Company, LLC, Nine Mile Point Nuclear Station, Units 1 and 2 ML14189A6652014-07-24024 July 2014 Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Considerations and Containing Sensitive Unclassified Non-Safeguards Information - August 5, 2014 ML14126A4382014-05-20020 May 2014 Facility Operating and Combined Licenses: Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving Proposed No Significant Hazards Considerations and Containing SUNSI and Order Imposing Procedures for Acces ML14063A1842014-03-25025 March 2014 Order Approving Direct Transfer of Renewed Operating Licenses and Conforming License Amendments ML13294A0702013-12-18018 December 2013 Consideration of Approval of Transfer of Renewed Facility Operating Licenses, Materials Licenses, and Conforming Amendments Containing SUNSI ML13294A0392013-11-0707 November 2013 Notice of Consideration of Approval of Transfer of Renewed Facility Operating Licenses and Conforming Amendments,.. ML13225A5572013-08-12012 August 2013 Rescission of Certain Security Orders Concerning Spent Nuclear Fuel in Transit ML13228A3992013-08-12012 August 2013 Letter to Holders of Independent Spent Fuel Storage Installation (ISFSI) Licenses Re Rescission of Certain Security Orders Concerning Spent Nuclear Fuel in Transit - Rin 3150-AI64 (NRC-2009-0163) EA-02-109 ML13121A4592013-06-0505 June 2013 Order Designating an Interim Class of NRC Licensed Facilities That Are Eligible to Apply to the Commission for Authorization to Use the Authority Granted Under the Provisions of Section 161A of the Atomic Energy Act of 1954, as Amended NRC-2013-0127, Order Designating an Interim Class of NRC Licensed Facilities That Are Eligible to Apply to the Commission for Authorization to Use the Authority Granted Under the Provisions of Section 161A of the Atomic Energy Act of 1954, as Amended2013-06-0505 June 2013 Order Designating an Interim Class of NRC Licensed Facilities That Are Eligible to Apply to the Commission for Authorization to Use the Authority Granted Under the Provisions of Section 161A of the Atomic Energy Act of 1954, as Amended ML12056A0442012-03-12012 March 2012 Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Effective Immediately) - to All Power Reactor Licensees and Holders of Construction Permits in Active or Deferred Status NRC-2012-0069, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents - to All Operating Boiling Water Reactor Licensees with Mark I and Mark Ii Containments2012-03-12012 March 2012 Order Modifying Licenses with Regard to Reliable Hardened Containment Vents - to All Operating Boiling Water Reactor Licensees with Mark I and Mark Ii Containments 2021-05-26
[Table view] Category:Letter
MONTHYEARNMP1L3570, Supplemental Information Letter - Revision to the Technical Specifications Design Features Sections to Remove the Nine Mile 3 Nuclear Project, LLC, Designation2024-02-0101 February 2024 Supplemental Information Letter - Revision to the Technical Specifications Design Features Sections to Remove the Nine Mile 3 Nuclear Project, LLC, Designation IR 05000220/20230042024-02-0101 February 2024 Integrated Inspection Report 05000220/2023004 and 05000410/2023004 NMP1L3569, CFR 50.46 Annual Report2024-01-26026 January 2024 CFR 50.46 Annual Report ML24004A2122024-01-0808 January 2024 Senior Reactor and Reactor Operator Initial License Examinations ML23354A0012024-01-0404 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0059 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) ML23278A1292023-12-14014 December 2023 Units 1 & 2; Limerick, Units 1 & 2; Nine Mile Point, Units 1 & 2; and Peach Bottom, Units 2 & 3 -Revision to Approved Alternatives to Use Boiling Water Reactor Vessel and Internals Project Guidelines NMP1L3566, Radiological Emergency Plan Document Revision. Includes EP-AA-1013, Revision 10, Radiological Emergency Plan Annex for Nine Mile Point Station2023-12-14014 December 2023 Radiological Emergency Plan Document Revision. Includes EP-AA-1013, Revision 10, Radiological Emergency Plan Annex for Nine Mile Point Station IR 05000410/20243012023-12-14014 December 2023 Initial Operator Licensing Examination Report 05000410/2024301 ML23305A1402023-12-13013 December 2023 Units 1 & 2; Nine Mile Point, Unit 2; Peach Bottom, Units 2 & 3; and Quad Cities, Units 1 and 2 - Issuance of Amendments to Adopt Traveler TSTF-580 NMP1L3564, Supplemental Response to Part 73 Exemption Request - Withdrawal of Request for Exemption from 10 CFR 73, Subpart B, Preemption Authority Requirements2023-12-0707 December 2023 Supplemental Response to Part 73 Exemption Request - Withdrawal of Request for Exemption from 10 CFR 73, Subpart B, Preemption Authority Requirements ML23291A4642023-12-0707 December 2023 Issuance of Amendment No. 251 Regarding the Adoption of Title 10 the Code of Federal Regulations Section 50.69, Risk-Informed Categorization and Treatment of SSC for Nuclear Power Plants ML23289A0122023-12-0606 December 2023 Issuance of Amendment No. 250 Regarding the Revision to Technical Specifications to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b NMP1L3563, Submittal of Relief Request I5R-12, Revision 0, Concerning the Installation of a Full Structural Weld Overlay on Reactor Pressure Vessel Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld (32-WD-208)2023-12-0404 December 2023 Submittal of Relief Request I5R-12, Revision 0, Concerning the Installation of a Full Structural Weld Overlay on Reactor Pressure Vessel Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld (32-WD-208) IR 05000220/20234022023-11-28028 November 2023 Security Baseline Inspection Report 05000220/2023402 and 05000410/2023402 NMP1L3557, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-11-22022 November 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23317A1192023-11-10010 November 2023 Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums IR 05000220/20234202023-11-0101 November 2023 Security Baseline Inspection Report 05000220/2023420 and 05000410/2023420 ML23305A0052023-11-0101 November 2023 Operator Licensing Examination Approval IR 05000220/20230032023-10-25025 October 2023 Integrated Inspection Report 05000220/2023003 and 05000410/2023003 IR 05000220/20235012023-10-17017 October 2023 Emergency Preparedness Biennial Exercise Inspection Report 05000220/2023501 and 05000410/2023501 IR 05000220/20230112023-10-16016 October 2023 Comprehensive Engineering Team Inspection Report 05000220/2023011 and 05000410/2023011 RS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023 Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans NMP1L3554, Submittal of Revision 28 to the Final Safety Analysis Report (Updated), Fire Protection Design Criteria Document, 10CFR50.59 Evaluation Summary Report, 10CFR54.37(b) Aging Management Review, and Technical Specifications with Revised Bases2023-10-0606 October 2023 Submittal of Revision 28 to the Final Safety Analysis Report (Updated), Fire Protection Design Criteria Document, 10CFR50.59 Evaluation Summary Report, 10CFR54.37(b) Aging Management Review, and Technical Specifications with Revised Bases C IR 05000220/20233032023-09-20020 September 2023 Retake Operator Licensing Examination Report 05000220/2023303 ML23250A0822023-09-19019 September 2023 Regulatory Audit Summary Regarding LARs to Adopt TSTF-505, Rev. 2, and 10 CFR 50.69 ML23257A1732023-09-14014 September 2023 Requalification Program Inspection IR 05000220/20230052023-08-31031 August 2023 Updated Inspection Plan for Nine Mile Point Nuclear Station, Units 1 and 2 (Report 05000220/2023005 and 05000410/2023005) RS-23-080, Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs2023-08-30030 August 2023 Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs NMP2L2851, Relief Request Associated with Successive Inspections for Generic Letter 88-01 / BWRVIP-75-A Augmented Examinations2023-08-25025 August 2023 Relief Request Associated with Successive Inspections for Generic Letter 88-01 / BWRVIP-75-A Augmented Examinations ML23151A3472023-08-21021 August 2023 Issuance of Amendments to Adopt TSTF-295-A, Modify Note 2 to Actions of PAM Table to Allow Separate Condition Entry for Each Penetration NMP1L3534, License Amendment Request - Revision to the Technical Specifications Design Features Sections to Remove the Nine Mile 3 Nuclear Project, LLC, Designation2023-08-18018 August 2023 License Amendment Request - Revision to the Technical Specifications Design Features Sections to Remove the Nine Mile 3 Nuclear Project, LLC, Designation ML23220A0262023-08-0808 August 2023 Licensed Operator Positive Fitness-for-Duty Test IR 05000220/20234012023-08-0808 August 2023 Cyber Security Inspection Report 05000220/2023401 and 05000410/2023401 (Cover Letter Only) NMP1L3545, Supplemental Information Letter to Adopt TSTF-505, Provide Risk- Informed Extended Completion Times - 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RS-23-087, Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor2023-08-0404 August 2023 Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor IR 05000220/20230022023-08-0101 August 2023 Integrated Inspection Report 05000220/2023002 and 05000410/2023002 ML23207A0762023-07-14014 July 2023 EN 56557 - Update to Part 21 Report Re Potential Defect with Trane External Auto/Stop Emergency Stop Relay Card Pn: XI2650728-06 NMP1L3544, Fifth Inservice Inspection Interval, First Inservice Inspection Period 2023 Owner'S Activity Report for RFO-27 Inservice Examinations2023-07-14014 July 2023 Fifth Inservice Inspection Interval, First Inservice Inspection Period 2023 Owner'S Activity Report for RFO-27 Inservice Examinations ML23186A1642023-07-0606 July 2023 Operator Licensing Retake Examination Approval NMP2L2846, Nine Mire Point Nuclear Station, Units 1 and 2, General License 30-day Cask Registration Notifications2023-07-0505 July 2023 Nine Mire Point Nuclear Station, Units 1 and 2, General License 30-day Cask Registration Notifications ML23192A0622023-06-30030 June 2023 Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance, Report No. 10CFR21-0136, Rev. 0 IR 05000220/20230102023-06-29029 June 2023 Biennial Problem Identification and Resolution Inspection Report 05000220/2023010 and 05000410/2023010 ML23131A4242023-06-23023 June 2023 Issuance of Amendment No. 249 Regarding the Revision to Technical Specification 3.3.1 to Adopt Technical Specifications Task Force Traveler TSTF-568 RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023 Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations NMP1L3539, Day Commitment Response - Relief Request I5R-11 Concerning the Installation of a Weld Overlay on Reactor Pressure Vessel Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld (32-WD-208)2023-06-0909 June 2023 Day Commitment Response - Relief Request I5R-11 Concerning the Installation of a Weld Overlay on Reactor Pressure Vessel Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld (32-WD-208) ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined RS-23-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-05-25025 May 2023 Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling IR 05000410/20233022023-05-15015 May 2023 Initial Operator Licensing Examination Report 05000410/2023302 2024-02-01
[Table view] |
Text
8 REG Og~o Cy A O+~O~+*+<<I UNITED STATES NUCLEAR REGULATORY COMMlsslON WASHINGTON, D.C.20555 February 28, 1978 All Operating BWR Licensees (Except for Humboldt)Gentlemen:
The NRC staff has completed its review of the generic Mark I Containment Short Term Program conducted by the Mark I Owners Group'nd the associated plant-unique information which you provided with respect to your facility's containment system.The results of our review are documented in the staff's"Mark I Containment Short Term Program Safety Evaluation Report," NUREG-0408, December 1977.A copy.of this document is enclosed for your i nformati on.Based upon our review, we have concluded that licensed Mark I BWR facilities can continue to operate safely, without undue risk to the health and safety of the public, during an interim period of approximately two years while a methodical, comprehensive Lonq Term Program (LTP)is conducted.
This conclu-sion has been made based on our determination (1)that the magnitude and character of each of the hydrodynamic loads resulting from a postulated de-sign basis loss of coolant accident (LOCA)have been adequately defined for use in the Short Term Program (STP)structural assessment of the Mark I containment system;and (2)that, for the most probable loads induced by a postulated design basis LOCA, a safety factor to failure of at least two exists for the weakest structural or mechanical component in the contain-ment system for each operating Mark I BWR facility.As described in Section IV of NUREG-0408, our evaluation of the capability of your faci'lity's Mark I containment system to withstand the recently identified'OCA-related hydrodynamic suppression pool loads indicates that, although each of the structural and mechanical components of your contain-ment system meet the STP structural acceptance criteria (i.e., a safety factor to failure of at least two), the demonstrated safety margins of certain components under these loading conditions is less than.that which is necessary to satisfy the requirements of Section III of the ASME Boiler and Pressure Vessel Code.Consequently, we have concluded that the
demonstrated safety margin of your facility's containment system with respect to such loading conditions does not comply with our current interpretation of"sufficient margin" as prescribed in General Design Criterion (GDC)50,"Containment Design Basis", of Appendix A to 10 CFR Part 50.For long term operation of your facility, we will require that the structural and mechanical components-of your facility's con-tainment system meet the acceptance criteria of the ASME Boiler and Pressure Vessel Code to the maximum extent practicable for the loads and loading combinations identifieg jn the Mark I Containment Long Term Program and approved by the NRC staff.However, we find that: (1)your facility's containment system design still retains sufficient margin under present conditions to preclude failure and thus provides reasonable assurance of no undue risk to the health and safety of the public, (2)the objective of the Hark I Con-tainment LTP, i.e., to restore the originally intended design safety margins for each Hark I containment system, is acceptable, and (3)the Hark I Owner's Program Action Plan for the LTP is reasonably designed to satisfy the LTP objectives.
Therefore, we find that operation of your facility, in conformance with the conditions specified in NUREG-0408, will not endanger life or property or the common defense and security.In the absence of any safety problem associated with operation of your facility until the LTP is completed, there appears to be no public interest consi deration favoring restriction of the operation of your facility.Accordingly, pursuant to 10 CFR Part 50, Section 50.12, you're hereby.granted an exemption from GDC-50, with respect to LOCA-related hydrodynamic suppression pool loads, for an interim period until completion of the LTP (approximately two years), provided that the conditions specified in NUREG-0408 and any resulting Technical Specification requirements are maintained.
To this extent, this exemp-tion encompasses any related requirements of 10 CFR Part 50, Section 50.55(a), and GDC-l.A sample FEDERAL REGISTER Notice related to this action is also enclosed The Notice that is filed with the Office of the Federal Register for each individual plant will be provided at a later date.As discussed in Section III.C.of NUREG-0408, operating and surveillance requirements on drywe11/wetwell differe'ntial pressure and torus water levels will be incorporated, by license amendment, into your facility Technical Specifications in the near future
Enclosures:
See Page 3 V or Stell , Jr., rector Division o pe n Reactors Office of Nuclear Reactor Regulation
Enclosures:
l.NUREG-0408,"Nark I Containment Short Term Program Safety Evaluation Report" 2.Federal Re ister Notice
+C SAMPLE FEDERAL REGISTER NOTICE UNITED STATES NUCLEAR REGULATORY COMMISSION DOCKET NO.LICENSEE NOTICE OF GRANTING AN EXEMPTION FROM THE RE UIREMENTS OF ENERAL DESIGN CRI ER 0 50 CONTAINMENT DESIGN BASIS OF APPENDI A TO 1 CFR PART 5 The U.S.Nuclear.Regulatory Commission (The Commission) has granted an exemption from the requirements of General Desiqn Criterion 50,"Contain-ment Design Basis", of Appendix A to 10 CFR Part 50 to (Licensee)(the Licensee).
This exemption relates to the demonstrated safety margin of the Mark I containment system for (Facilit Name)for recently identified hydrodynamic supppression pool loads associated with a postulated design basis loss of coolant acci.dent and provides for operation under the conditions specified in the NRC staff's"Mark I Con-tainment Short Term Program Safety Evaluation Report" and under any resulting Technical Specification requirements.
To this extent, this exemption encompasses any related requirements of 10 CFR Part 50, Sec-tion 50.55(a), and General Design Criterion 1.This exemption is effective as of the date of its issuance.The Commission has evaluated the demonstrated safety margin of the containment system for (Facilit Name)under present
conditions and has concluded that sufficient margin exists to preclude undue risk to the health and safety of the public.This evalua-tion is documented in the staff's"Hark I Containment Short Term Program.Safety Evaluation Report," NUREG-0408, Pecember 1977.This exemption is granted for an interim period of approximately two years while a more detailed review i's conducted.
At the conclusion of this re-view, the design safety margin of the containment system for (Facilit Name will be restored to that which was originally intended at the time (Facilit Name)was licensed for operation.
The basis for this exemption is set forth in the letter to the licensee granting the exemption, dated February, 1978.The Commission has determined that the granting of this exemption will not result in any significant environmental impact and that pursuant to 10 CFR Section 51.5(d)(4) an environmental impact statement or negative declara-tion and environmental impact appraisal need not be prepared in connection with this action.For further details with respect to this action, see (1)the Commission's letter to the licensee dated February , 1978, and (2)the Commission'
)~H,~"1 I ll II "Mark I Containment Short Term Program Safety Evaluation Report," NUREG-0408, December 1977.These items are available for public inspection at the Commission's Public Document Room, 1717 H Street, N.W., Washington, D.C.and at the (LPDR)A copy of item (1)may be obtained upon request addressed to the U.S.Nuclear Regulatory Commission, Washinq-ton, D.C.20555,, Attention:
Director, Division of Operating Reactors.A copy of item (2)may be obtained upon request addressed to the National Technical Information Service, Sprinqfield, Virginia 22161.Dated at Bethesda, Maryland this FOR THE NUCLEAR REGULATORY COMMISSION
, Chief Operatinq Reactors Branch Division of Operating Reactors Cl Niagara Mohawk Power Corporation cc: Eugene B.Thomas, Jr., Esquire LeBoeuf, Lamb, Leiby 5 MacRae 1757 N Street, N.W.Washington, D.C.20036 Anthony Z.Roisman Natural Resources Defense Council 917 15th Street, N.W.Washington, D.C.20005 Oswego County Office Building 46 E.Bridge Street Oswego, New York 13126