Letter Sequence Acceptance Review |
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MONTHYEARML1009004602010-03-30030 March 2010 Submittal of License Amendment Request, Extension of Completion Time for an Inoperable Diesel Generator - Technical Specification 3.8.1, AC Sources - Operating Project stage: Request ML1011803792010-04-28028 April 2010 Unit No.2 - E-mail from R. Guzman to J. Dosa Acceptance Review for LAR - Inoperable DG 14-Day Completion Time Extension Project stage: Acceptance Review ML1012601662010-05-0606 May 2010 E-mail from R. Guzman to J. Dosa Acceptance Review Revised Questions for License Amendment Requesting 14 Day Completion Time Extension for Inoperable EDG Project stage: Acceptance Review ML1012307272010-05-11011 May 2010 Acceptance Review Determination of License Amendment Request Extension of Completion Time for Inoperable Diesel Generator Project stage: Acceptance Review ML1016004522010-06-0101 June 2010 Submittal of Supplemental Information in Support of License Amendment Extension of Completion Time for an Inoperable Diesel Generator Project stage: Supplement ML1016003832010-06-11011 June 2010 Acceptance Review of License Amendment Request and Supplemental Information Extension of Completion Time for an Inoperable Diesel Generator Project stage: Acceptance Review ML1031302612010-11-0909 November 2010 Request for Additional Information, Extension of Completion Time for Inoperable Diesel Generator, Electrical Engineering Review Project stage: RAI ML1031303272010-12-15015 December 2010 Request for Additional Information Extension of Allowed Outage Time for Inoperable Diesel Generator, Probabilistic Risk Assessment Project stage: RAI ML1101101652010-12-29029 December 2010 Response to NRC Request for Additional Information on License Amendment Request Pursuant to 10 CFR 50.90: Extension of the Completion Time for an Inoperable Diesel Generator Project stage: Response to RAI ML1102502712011-01-14014 January 2011 License Amendment Request Pursuant to 10 CFR 50.90: Extension of the Completion Time for an Inoperable Diesel Generator - Response to NRC Request for Additional Information Project stage: Response to RAI ML1103906562011-02-0808 February 2011 E-mail from R.Guzman to D.Vandeputte - Request for Additional Information Div 3 EDG CT Extension LAR - PRA Review Project stage: RAI ML1105305442011-02-22022 February 2011 E-mail from R. Guzman to D. Vandeputte - Supplemental Request for Additional Information Extension of Completion Time for Inoperable DG Project stage: RAI ML1106704242011-02-25025 February 2011 License Amendment Request Pursuant to 10 CFR 50.90: Extension of the Completion Time for an Inoperable Diesel Generator - Supplemental Information Responding to NRC Follow-up Probabilistic Risk Assessment Review Question Project stage: Supplement ML1107006342011-03-11011 March 2011 E-mail from R. Guzman to S. Som Regarding Supplemental Information from Licensee Regarding License Amendment Request for Completion Time Extension - Division 3 DG Project stage: Other ML1106910202011-03-15015 March 2011 Supplemental Request for Additional Information, Extension of Completion Time for Inoperable Diesel Generator, Electrical Engineering Review Project stage: RAI ML11119A1372011-04-27027 April 2011 License Amendment Request Pursuant to 10 CFR 50.90: Extension of Completion Time for Inoperable Diesel Generator-Supplemental Information Responding to NRC Follow-up Electrical Engineering Branch Review Questions Project stage: Supplement ML1117414582011-06-23023 June 2011 E-mail from R. Guzman to J. Dosa Requesting Supplemental Information Boral Monitoring Program NMP2 Extended Power Uprate LAR Project stage: Other ML1116603882011-07-11011 July 2011 Request for Additional Information, Extension of Completion Time for Inoperable Diesel Generator, Technical Specifications Review Project stage: RAI ML11214A2142011-07-25025 July 2011 License Amendment Request, Extension of the Completion Time for Inoperable Diesel Generator - Response to NRC Request for Additional Information Project stage: Response to RAI ML1122200812011-08-0909 August 2011 E-mail from Alyse Peterson to Richard Guzman NRC Request for State Consultation for Proposed Amendment Regarding Allowed Outage Time Extension for Division 1 or Division 2 Diesel Generator Inoperable Project stage: Request ML1130400692011-10-31031 October 2011 E-mail from R. Guzman to A. Peterson NRC Response to State Comments for Proposed Amendment Regarding Allowed Outage Time Extension for Division 1 or Division 2 Diesel Generator Inoperable Project stage: Other ML1122001552011-10-31031 October 2011 Issuance of Amendment Regarding Extension of Completion Time for Inoperable Division 1 or Division 2 Diesel Generator Project stage: Approval 2011-10-31
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Category:Acceptance Review Letter
MONTHYEARML24008A2622024-01-0808 January 2024 Acceptance Review Determination for Relief Request I5R-12, Concerning Installation of a FSWOL on RPV Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld ML23019A3092023-01-19019 January 2023 Acceptance Review Determination License Amendment Request to Adopt 10 CFR 50.69 Categorization Process ML23019A3032023-01-19019 January 2023 Acceptance Review Determination License Amendment Requets to Adopt TSTF-505 ML22252A1522022-09-0909 September 2022 Acceptance Review Determination Partial Adoption of TSTF-568 to Revise TS 3.3.1 for Primary Containment Oxygen Concentration ML22207A0122022-07-26026 July 2022 Acceptance Review Determination Revision to Alternative Source Term Analysis for Containment Leakage ML22173A0802022-06-22022 June 2022 E-mail Dated 6/22/2022, Acceptance of Requested License Amendment Request to Revise Surveillance Requirements to Reduce Number of Fast Starts of EDGs ML22075A0362022-03-16016 March 2022 Acceptance Review Determination - Relief Request CS-PR-02 Associated with Pump Periodic Verification Test of Core Spray System Pumps, E-mail Dated 3/16/2022 ML21278A6872021-10-0505 October 2021 Acceptance Review Determination - Relief Request GV-RR-10 ML21077A1772021-04-0808 April 2021 Withdrawal of Requested Exemption from Certain Requirement in 10 CFR 50.55a (Epids L-2021-LLE-0014, 0015, & 0016) ML21033A9432021-02-0202 February 2021 Correction to Acceptance of Requested License Amendment to Adopt Technical Specification Task Force Traveler 582 ML20294A4242020-10-20020 October 2020 Acceptance of Requested Licensing Action Relief Requests CTNSP-PR-01 and CS-PR-01 (EPIDs L-2020-LLR-0136 and L-2020-LLR-0137) ML20262H0322020-09-18018 September 2020 Acceptance Email of Requested Licensing Actions Concerning Surveillance Frequency for Excess Flow Check Valve Testing Frequency (EPIDs L-2020-LLA-0188 and L-2020-LLR-0114) ML20262G9372020-09-17017 September 2020 Acceptance of Requested Licensing Action End of Interval Relief Request Associated with the Fourth Ten-Year Inservice Inspection (ISI) Interval ML19339E8542019-12-0505 December 2019 Supplemental Information Needed for Acceptance of Requested Licensing Action Adoption of Risk-Informed Completion Times ML19301C3162019-10-28028 October 2019 Acceptance of Requested Licensing Action Relief Request 2ISI - 014 ML18206A7172018-07-25025 July 2018 Acceptance of Requested Licensing Action Revision to Technical Specification for Primary Containment Oxygen Concentration ML18190A1402018-07-0909 July 2018 Acceptance of Requested Licensing Action Relief Requests I5R-05 and I4R-05 Threads in Flange ML18190A0922018-07-0606 July 2018 Acceptance of Requested Licensing Action Relief Requests I5R-06 and I4R-06 - Use of Encoded Phased Array ML18192B8582018-07-0606 July 2018 L-2018-LLR-0085 - Acceptance Email for RR BWRVIP Requirements 2018-07-06 ML18186A5352018-07-0505 July 2018 Acceptance of Requested Licensing Action Relief Requests I5R-04 and I4R-04 - N-513-4 ML18107A0252018-04-16016 April 2018 Acceptance of License Amendment Request Relocation of Surveillance Requirement Frequencies to Inservice Testing Program ML18071A1582018-03-12012 March 2018 Acceptance of License Amendment Request Concerning Proposed Changes to Remove Boraflex Credit ML17340A9542017-12-0505 December 2017 Acceptance of License Amendment Request Concerning Changes to Safety Limit Minimum Critical Power Ratios for Cycle 17 ML17192A1752017-07-11011 July 2017 Plants, Units 1 and 2; Calvert Cliffs Independent Spent Fuel Storage Installation; Nine Mile Point Nuclear Station, Units 1 and 2; R. E. Ginna - Acceptance of License Amendment Request to Revise Emergency Action Level Schemes ML17167A2192017-06-21021 June 2017 Acceptance of Requested Licensing Action Amendment to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-522 ML17143A0412017-05-23023 May 2017 Acceptance of Requested Licensing Action Amendments to Revise Emergency Action Level ML17143A2642017-05-23023 May 2017 Acceptance of Requested Licensing Action Amendment to Revise Emergency Action Level ML17117A3622017-05-0202 May 2017 Acceptance of Requested Licensing Action Amendment to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-283A, Revision 3 ML17083A3652017-03-31031 March 2017 Acceptance of Requested Licensing Action Relief Request to Utilize Code Case N-702 ML17058A4342017-03-0202 March 2017 Acceptance of Requested Licensing Action Reduce Steam Dome Pressure in Reactor Core Safety Limits ML17019A0532017-01-31031 January 2017 Supplemental Information Needed for Acceptance of Requested Licensing Action Amendment to Reduce Steam Dome Pressure in Reactor Core Safety Limits ML17017A1092017-01-24024 January 2017 Acceptance of Requested Licensing Action Partial Length Fuel Rod Burnup ML13022A3252013-01-22022 January 2013 MF0345 - Acceptance of Requested Licensing Action License Amendment Request- Relocation of PT Limit Curves to PTLR ML12222A0292012-08-0909 August 2012 Correction to Acceptance Letter - Nine Mile Point Nuclear Station, Unit No. 1 - License Amendment Request Pursuant to 10CFR 50.90: Adoption of NFPA 805, Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generat ML1213004912012-05-0909 May 2012 ME8534, E-mail to Licensee for Acceptance of Relief Request RR-PTRR-02 ML1115905522011-06-0707 June 2011 E-mail from R.Guzman to J.Dosa - Acceptance Review Determination for Request to Revise Emergency Action Levels in Accordance with NEI-99-01 ML1109502922011-04-0505 April 2011 Acceptance Review Determination Relief Request for Repair of CRD Housing Penetrations ML1036103342011-01-0505 January 2011 Acceptance Review Determination of License Amendment Request Revisions to Average Power Range Monitor Instrumentation Operability Requirements TS 3.6.2 ML1012601662010-05-0606 May 2010 E-mail from R. Guzman to J. Dosa Acceptance Review Revised Questions for License Amendment Requesting 14 Day Completion Time Extension for Inoperable EDG ML1011803792010-04-28028 April 2010 Unit No.2 - E-mail from R. Guzman to J. Dosa Acceptance Review for LAR - Inoperable DG 14-Day Completion Time Extension ML1011209872010-04-22022 April 2010 E-mail from R. Guzman to J. Dosa Acceptance Review Determination for LAR to Modify Technical Specifications for Inoperable Snubbers and Add LCO 3.0.8 ML0918906662009-07-0808 July 2009 E-mail from R. Guzman to J. Dosa Acceptance Review Results of NMP2 Extended Power Uprate Application ML0905703152009-02-26026 February 2009 Acceptance Review Constellation and Edf Development - Application for Approval of License Transfers and Conforming License Amendment Request-Calvert Cliffs Nuclear Power Plant 1 and 2, Nine Mile Point Nuclear Station 1 and 2, and R.E. Ginna 2024-01-08
[Table view] Category:E-Mail
MONTHYEARML24312A1662024-11-0707 November 2024 Request for Additional Information (11/7/2024 E-mail) - LAR to Revise TSs to Adopt TSTF-230, Revision 1, Add New Condition B to LCO 3.6.2.3 ML24250A1062024-09-0606 September 2024 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC - Fleet Request - Proposed Alternative to Utilize Code Case OMN-32 (L-2024-LLR-0030) ML24249A1362024-09-0404 September 2024 EN 57304 - Westinghouse Electric Company, LLC, Final Report - No Embedded Files. Notification of the Potential Existence of Defects Pursuant to 10 CFR Part 21 ML24234A2772024-08-21021 August 2024 NRR E-mail Capture - Final RAI - Constellation Energy, LLC - Fleet Request - Proposed Alternative Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds (L-2024-LLR-0031) ML24240A1902024-08-12012 August 2024 E-mail (8/12/2024) from R. Reynolds (CEG) to R. Guzman (NRC) - Corrected TS Pages for LAR TS Design Features Section to Remove the Nine Mile Point Unit 3 Nuclear Project, LLC ML24213A2202024-07-31031 July 2024 Updated Change in Estimated Review Schedule Revision to TS Design Features Section to Remove the Nine Mile Point Unit 3 Nuclear Project, LLC ML24197A0092024-07-15015 July 2024 Acceptance Review Determination for LAR to Adopt TSTF-230, Revision 1, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling ML24197A0162024-07-12012 July 2024 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC - Fleet Request - License Amendment Request to Adopt TSTF-591 ML24156A0082024-05-31031 May 2024 NRR E-mail Capture - Constellation Energy, LLC - Fleet Request - Acceptance of Proposed Alternative Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds (L-2024-LLR-0031 ML24131A0612024-05-10010 May 2024 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Proposed Alternative to Utilize Code Case OMN-32 (L-2024-LLR-0030) ML24122B5072024-05-0101 May 2024 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-591, Revision 0 ML24008A0592024-01-0808 January 2024 E-mail Dated 1-8-2024 from R. Guzman to R. Reynolds Correct TS Page 204 for License Amendment No. 250 Adoption of TSTF-505 ML24008A2622024-01-0808 January 2024 Acceptance Review Determination for Relief Request I5R-12, Concerning Installation of a FSWOL on RPV Recirculation Inlet Nozzle N2E Safe End-to-Nozzle Dissimilar Metal Weld ML23268A0022023-09-22022 September 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-264-A, Revision 0 ML23264A7992023-09-21021 September 2023 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC – Fleet Request – License Amendment Request to Adopt TSTF-580, Revision 1 ML23255A2872023-09-12012 September 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Alternative to Use the Successive Inspection Requirements of BWRVIP-75-A ML23237B3972023-08-24024 August 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Alternative Request to Use Updated BWRVIP Guidelines ML23205A2432023-07-19019 July 2023 NRC Staff Follow-up Question on Audit Question 18 TSTF-505 and 50.69 Regulatory Audit (E-mail Dated 7/19/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) 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 ML23205A2412023-07-11011 July 2023 NRC Staff Follow-up Comments on Audit Questions 6a, 6b, and 6c TSTF-505 and 50.69 Regulatory Audit (E-mail Dated 7/11/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23205A2422023-07-11011 July 2023 NRC Staff Follow-up Comments on Audit Questions 17 and 19 TSTF-505 and 50.69 Regulatory Audit (E-mail Dated 7/11/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23209A7692023-06-14014 June 2023 Draft Audit Results File TSTF-505 and 50.69 (E-mail Dated 6/14/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23209A7672023-06-13013 June 2023 Share File Observations on Response to Question 06 and 22 TSTF-505 and 50.69 (E-mail Dated 6/13/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23163A2292023-06-12012 June 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-580, Revision 1 ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined ML23149A0012023-05-29029 May 2023 Audit Agenda TSTF-505 and 50.69 (E-mail Dated 5/29/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23142A0222023-05-22022 May 2023 Regulatory Audit Questions (PRA) TSTF-505 and 50.69 (E-mail Dated 5/22/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23118A3882023-04-28028 April 2023 Regulatory Audit Questions TSTF-505 and 50.69 (E-mail Dated 4/28/2023) (EPIDs L-2022-LLA-0185 and L-2022-LLA-0186) ML23104A3472023-04-14014 April 2023 Verbal Authorization for Relief Request I5R-14, Proposed Alternative Associated with N2E Dissimilar Metal Weld Overlay Repair with Laminar Indication ML23093A1782023-04-0303 April 2023 E-mail from T. Loomis to R. Guzman Proposed Alternative to Utilize Specific Provisions of Code Case N-716-3 ML23090A1302023-03-31031 March 2023 Verbal Authorization for Relief Request I5R-11, Proposed Alternative Repair of Recirculation Inlet Nozzle N2E Dissimilar Metal Weld ML23087A2912023-03-28028 March 2023 Request for Additional Information (3/28/2023 E-mail) - Proposed Emergent I5R-11 Alternative Associated with a Weld Overlay on RPV Recirculation Nozzle N2E DM Weld ML23061A0522023-03-0202 March 2023 Request for Additional Information (3/2/2023 E-mail) - Proposed Alternative Associated with a Weld Overlay Repair to the Torus ML23047A3832023-02-15015 February 2023 (2-15-2023 Email from J. Nelson to R. Guzman) Long Island Power Authority and Long Island Lighting Company Request for Threshold Determination ML23033A0142023-02-0202 February 2023 E-mail Dated 2-2-2023 from R.Guzman to R.Reynolds Correction to Error in NMP1 TSTF-505 and 50.69 Audit Plan ML23019A3092023-01-19019 January 2023 Acceptance Review Determination License Amendment Request to Adopt 10 CFR 50.69 Categorization Process ML23019A3032023-01-19019 January 2023 Acceptance Review Determination License Amendment Requets to Adopt TSTF-505 ML23013A3332023-01-13013 January 2023 Acceptance Review Determination Proposed Alternative for Weld Overlay Repair to the Torus ML22354A2622022-12-20020 December 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Request to Use Certain Provisions of the 2019 Edition of the ASME BPV Code, Section XI ML22342B1462022-11-21021 November 2022 NRR E-mail Capture - Acceptance Review for TSTF 295A ML22314A2262022-11-10010 November 2022 E-mail Dated 11/10/2022 Relief Request Associated with Pump Periodic Verification Tests of Core Spray System Pumps ML22301A0902022-10-28028 October 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-301, Revision 2 ML22252A1522022-09-0909 September 2022 Acceptance Review Determination Partial Adoption of TSTF-568 to Revise TS 3.3.1 for Primary Containment Oxygen Concentration ML22207A0192022-07-26026 July 2022 (E-mail Dated 7/26/2022) Setup of Online Reference Portal for Revision to Alternative Source Term Calculation for MSIV and Non-MSIV Leakage ML22207A0122022-07-26026 July 2022 Acceptance Review Determination Revision to Alternative Source Term Analysis for Containment Leakage ML22200A0782022-07-19019 July 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request to Use Honeywell Mururoa V4F1 R Supplied Air Suits ML22194A9412022-07-13013 July 2022 Request for Additional Information Relief Request CS-PR-02 (7/13/2022 e-mail) ML22173A0802022-06-22022 June 2022 E-mail Dated 6/22/2022, Acceptance of Requested License Amendment Request to Revise Surveillance Requirements to Reduce Number of Fast Starts of EDGs ML22075A0362022-03-16016 March 2022 Acceptance Review Determination - Relief Request CS-PR-02 Associated with Pump Periodic Verification Test of Core Spray System Pumps, E-mail Dated 3/16/2022 ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 2024-09-06
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Text
From: Guzman, Richard Sent: Thursday, May 06, 2010 11:25 AM To: Guzman, Richard; 'Dosa, John J'; 'Vandeputte, Dennis E'
Subject:
RE: LIC-109 Non-Acceptance Determination w/Opportunity to Supplement -
ME3736 Nine Mile Point 2 - Inop DG 14-day Completion Time Extension (application dated 3/30/10)
- John, As we discussed, see revised question nos. 1 and 8 (in bold) below. No. 1 was modified to specify Rev. 2 as the applicable RG 1.200 for providing PRA quality information needed for fire and seismic risk models. The rationale from the staff is that after reviewing RG 1.200 and the associated RIS 2007-06 which discusses implementation, Rev. 2 of RG 1.200 was delayed for implementation for one year only for the purpose of requiring the use of endorsed standards.
The high level requirements found in Section 1.2 were revised in Rev. 2, and these reflect the information needed by the staff to review the PRA. Therefore, the staff requests that the submitted information be consistent w/Rev. 2 of RG 1.200 sections 1.2.4 and 1.2.6, although the submitted information does not have to provide NMPNS's assessment of the models against the endorsed standards. Question No. 8 was revised to indicate that staff's concerns for electric grid stability/performance concerns were considered as part of this additional information need.
Please advise a time/date you can support a follow-up call to discuss these revised questions.
Early next week works for us at this time.
- Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov
DRAFT Rev.1 -------
PRA Licensing Review
- 1. The submittal identifies that fire and seismic risk are included in the PRA model. A single paragraph referring to the IPEEE submittal and to the NRC IPEEE evaluation is provided, along with a table of the NRC review comments and their disposition from the IPEEE. The purpose of the IPEEE and the NRC Research Office staff evaluation was to identify significant plant vulnerabilities, not to establish that the analyses were state-of-the art risk analyses to support licensing actions. This level of quality is not acceptable to support a risk-informed TS change. The licensee will need to submit PRA quality information on its fire and seismic risk models consistent with RG 1.200, Revision 2, Section 1.2.4 (fires) and 1.2.6 (seismic) to demonstrate that these quantitative models are adequate for this application. The licensee should also submit confirmation that the
existing fire and seismic models, stated to be based on the IPEEE, still adequately reflect the current plant configuration with regards to mitigation of these events.
- 2. Other plant hazards are not identified as included in the quantitative risk analyses, nor are qualitative dispositions provided to determine that the risk from these hazard groups is insignificant. This is inconsistent with RG 1.174 which requires all hazards to be addressed.
The licensee will need to address these external hazards unless they are included in the quantitative results; if so, then the technical adequacy of these PRA models will then need to be addressed per RG 1.200 Section 1.2.
- 3. The evaluation of the internal events PRA model using RG 1.200 and the applicable PRA standard does not identify the relevant capability category(ies) associated with this application, nor is the capability category(ies) of the PRA model identified in the submittal. This is inconsistent with RG 1.200 Section 4.2. The licensee will need to supplement their submittal to address the capability category(ies) of the standard applicable to this analysis.
- 4. There is no statement regarding any permanent plant changes implemented but not incorporated into the PRA model used to support this risk analysis. This is inconsistent with RG 1.200 Section 4.2. The licensee will need to supplement their submittal to address this issue.
- 5. The submittal makes extensive commitments to Tier 2 equipment restrictions (Section 3.2.5) which are credited in the risk analyses. These restrictions are to be incorporated into plant procedures and the TS bases, but not into the TS action requirements. There are no sensitivity analyses provided to allow the staff to determine which, if any, of these restrictions are critical to the acceptance of this change. The licensee will need to provide appropriate sensitivity analyses to permit staff review of the acceptability of these restrictions and their control in procedures and TS bases rather than in the TS actions.
- 6. The risk analyses are dependent upon the once-per-two-year use of the extended CTs, but there is no justification as to why this assumption is valid. The licensee proposes to control voluntary use of the CT to once- per-two-years, but this is to be addressed in the TS bases, not in the TS action. Emergent repairs may result in additional use of the extended CT. The licensee will need to provide a technical justification for this assumption, and will need to provide sensitivity studies to address emergent repair use of the extended CT considering the increased probability of common cause failures (consistent with RG 1.177 Appendix A).
Electrical Engineering Review
- 7. In the LAR, the licensee did not provide adequate justification for amending TS Section 3.8.1 to extend the Completion time for an inoperable Division 1 or 2 diesel generator from 72 hours3 days <br />0.429 weeks <br />0.0986 months <br /> to 14 days. Specifically, the licensee states " the 2-year DG inspections (which typically require 5 days to complete) and the 6-year DG overhauls (which typically require 7 days to complete)."
Provide the basis for the proposed extended Completion Time of 14 days.
- 8. It appears that the capacity of the proposed alternate AC power source to replace the inoperable EDG (Division 1 or 2) is not adequate to support a LOOP event with a unit trip.
Considering the changes in electric grid performance post-deregulation, the duration of loss of offsite power events has increased and that the probability of a LOOP as a consequence of a reactor trip has increased. As a deterministic measure to ensure adequate defense in depth given the changes in the electric grid performance post-deregulation, the staff requires the replacement power source has adequate capacity of
handling station blackout and loss-of-offsite power loads, to supplement the existing EDGs during the extended 14-day AOT. Provide justification to demonstrate that the proposed diesel is adequate to maintain the defense-in-depth philosophy of the emergency power system.
DRAFT Rev.1 -------
From: Guzman, Richard Sent: Wednesday, April 28, 2010 2:18 PM To: Dosa, John J
Subject:
LIC-109 Non-Acceptance Determination w/Opportunity to Supplement - ME3736 Nine Mile Point 2 - Inop DG 14-day Completion Time Extension (application dated 3/30/10)
- John, By letter dated March 30, 2010, Nine Mile Point Nuclear Station, LLC (NMPNS) submitted a license amendment request (LAR) for Nine Mile Point, Unit No. 1 (NMP2). The purpose of this e-mail is to provide the results of the NRC staff's acceptance review. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review.
The NRC staff has reviewed NMPNS's LAR and has found it unacceptable for review with the opportunity for the licensee to supplement. We would like to set up a conference call to discuss the identified information insufficiencies which is provided below in draft form. Please let me know your availability for a teleconference for sometime next week but no later than 5/5/10. I'd like to propose Tuesday anytime between 9a - 11a or 1p - 3p for the call. Please contact me if you have any questions.
- Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov
DRAFT----------------
PRA Licensing Review
- 1. The submittal identifies that fire and seismic risk are included in the PRA model. A single paragraph referring to the IPEEE submittal and to the NRC IPEEE evaluation is provided, along with a table of the NRC review comments and their disposition from the IPEEE. The purpose of the IPEEE and the NRC Research Office staff evaluation was to identify significant plant
vulnerabilities, not to establish that the analyses were state-of-the art risk analyses to support licensing actions. This level of quality is not acceptable to support a risk-informed TS change.
The licensee will need to submit PRA quality information on its fire and seismic risk models consistent with RG 1.200 Section 1.2.4 (fires) and 1.2.6 (seismic) to demonstrate that these quantitative models are adequate for this application. The licensee should also submit confirmation that the existing fire and seismic models, stated to be based on the IPEEE, still adequately reflect the current plant configuration with regards to mitigation of these events. The staff will be using the RG 1.200 endorsed standards to evaluate portions of the IPEEE PRA for fires relevant to this amendment request.
- 2. Other plant hazards are not identified as included in the quantitative risk analyses, nor are qualitative dispositions provided to determine that the risk from these hazard groups is insignificant. This is inconsistent with RG 1.174 which requires all hazards to be addressed.
The licensee will need to address these external hazards unless they are included in the quantitative results; if so, then the technical adequacy of these PRA models will then need to be addressed per RG 1.200 Section 1.2.
- 3. The evaluation of the internal events PRA model using RG 1.200 and the applicable PRA standard does not identify the relevant capability category(ies) associated with this application, nor is the capability category(ies) of the PRA model identified in the submittal. This is inconsistent with RG 1.200 Section 4.2. The licensee will need to supplement their submittal to address the capability category(ies) of the standard applicable to this analysis.
- 4. There is no statement regarding any permanent plant changes implemented but not incorporated into the PRA model used to support this risk analysis. This is inconsistent with RG 1.200 Section 4.2. The licensee will need to supplement their submittal to address this issue.
- 5. The submittal makes extensive commitments to Tier 2 equipment restrictions (Section 3.2.5) which are credited in the risk analyses. These restrictions are to be incorporated into plant procedures and the TS bases, but not into the TS action requirements. There are no sensitivity analyses provided to allow the staff to determine which, if any, of these restrictions are critical to the acceptance of this change. The licensee will need to provide appropriate sensitivity analyses to permit staff review of the acceptability of these restrictions and their control in procedures and TS bases rather than in the TS actions.
- 6. The risk analyses are dependent upon the once-per-two-year use of the extended CTs, but there is no justification as to why this assumption is valid. The licensee proposes to control voluntary use of the CT to once- per-two-years, but this is to be addressed in the TS bases, not in the TS action. Emergent repairs may result in additional use of the extended CT. The licensee will need to provide a technical justification for this assumption, and will need to provide sensitivity studies to address emergent repair use of the extended CT considering the increased probability of common cause failures (consistent with RG 1.177 Appendix A).
- 7. In addition to the deficiencies in PRA, it is noted that NMP2 has not proposed an alternate AC power source (AAC) to support this amendment request.
Electrical Engineering Review
- 8. In the LAR, the licensee did not provide adequate justification for amending TS Section 3.8.1 to extend the Completion time for an inoperable Division 1 or 2 diesel generator from 72 hours3 days <br />0.429 weeks <br />0.0986 months <br /> to 14 days. Specifically, the licensee states " the 2-year DG inspections (which typically require
5 days to complete) and the 6-year DG overhauls (which typically require 7 days to complete)."
Provide the basis for the proposed extended Completion Time of 14 days.
- 9. It appears that the capacity of the proposed alternate AC power source (HPCS EDG) to replace the inoperable EDG (Division 1 or 2) is not adequate to support a LOOP event with a unit trip. The NRC staff's position is that the replacement power source must have at least the same capability as the inoperable EDG (Division 1 or 2). Also, the LAR does not provide details regarding the methods and the time limitation for cross-connecting the power source to the Division 1 or 2 buses and its affect on plant shutdown. Explain why the proposed diesel is adequate to maintain the defense-in-depth philosophy of the emergency power system.
DRAFT----------------
E-mail Properties Mail Envelope Properties (F5A4366DF596BF458646C9D433EA37D7292F476A99)
Subject:
RE: LIC-109 Non-Acceptance Determination w/Opportunity to Supplement -
ME3736 Nine Mile Point 2 - Inop DG 14-day Completion Time Extension (application dated 3/30/10)
Sent Date: 5/6/2010 11:24:43 AM Received Date: 5/6/2010 11:24:43 AM From: Guzman, Richard Created By: Richard.Guzman@nrc.gov Recipients:
Richard.Guzman@nrc.gov (Guzman, Richard)
Tracking Status: None John.Dosa@cengllc.com ('Dosa, John J')
Tracking Status: None Dennis.Vandeputte@cengllc.com ('Vandeputte, Dennis E')
Tracking Status: None Post Office:
HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 30508 5/6/2010 Options Expiration Date:
Priority: olImportanceNormal
ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: