Letter Sequence Response to RAI |
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TAC:ME2531, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) |
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MONTHYEARML0931404632009-11-0303 November 2009 License Amendment Request Regarding Power Range Neutron Monitoring System Upgrade Project stage: Request ML0934100662009-12-10010 December 2009 Acceptance Review of License Amendment Request for Power Range Neutron Monitoring System - Includes Revised Schedule for Completion Based on Late Submittal Project stage: Acceptance Review ML1004308252010-02-0808 February 2010 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1010902452010-04-22022 April 2010 Request for Additional Information Power Range Neutron Monitoring System Project stage: RAI ML1014100942010-05-18018 May 2010 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1014704032010-05-25025 May 2010 Affidavit for 5/25/10 NRC Meeting to Discuss Response to Requests for Additional Information on License Amendment Request for Digital Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2010/00040, Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2010-06-0303 June 2010 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1018001492010-06-18018 June 2010 Schedule for Responding to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Request ML1017904372010-06-30030 June 2010 0000-0102-0888-RI, Plant-Specific Responses Required by Numac Prnm Retrofit Plus Option III Stability Trip Function Topical Report, (NEDC-3241OP-A) Project stage: Other ML1021500292010-07-29029 July 2010 Responses to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2010/00064, Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2010-09-29029 September 2010 Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2010/00075, Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2010-12-13013 December 2010 Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2010/00070, Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2010-12-14014 December 2010 Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1111704322011-04-27027 April 2011 Request for Additional Information, Round 4, License Amendment Request for Power Range Neutron Monitoring System Project stage: RAI ML1111704242011-04-27027 April 2011 E-mail, Request for Additional Information, Round 4, License Amendment Request for Power Range Neutron Monitoring System Project stage: RAI GNRO-2011/00032, Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-05-0303 May 2011 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1113204932011-05-12012 May 2011 E-mail, Request for Additional Information, Round 5, License Amendment Request for Power Range Neutron Monitoring System Project stage: RAI GNRO-2011/00038, Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-05-16016 May 2011 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2011/00039, Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-05-26026 May 2011 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2011/00042, Responses to NRC Requests for Additional Information Re License Amendment Request for Power Range Neutron Monitoring System2011-05-31031 May 2011 Responses to NRC Requests for Additional Information Re License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1113906562011-06-0202 June 2011 Request for Withholding Information from Public Disclosure, 5/11/2011 Affidavit Executed by J. Harrison, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00038 Project stage: Withholding Request Acceptance ML1113905962011-06-0202 June 2011 Request for Withholding Information from Public Disclosure, 4/28/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00032 Project stage: Withholding Request Acceptance GNRO-2011/00044, Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-06-13013 June 2011 Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML1117402132011-06-23023 June 2011 Email, Request for Additional Information, Round 6, License Amendment Request for Power Range Neutron Monitoring System Project stage: RAI GNRO-2011/00045, Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-06-28028 June 2011 Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Supplement GNRO-2011/00057, Response to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-07-22022 July 2011 Response to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2011/00066, Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-09-28028 September 2011 Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2011/00089, Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System2011-10-18018 October 2011 Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI GNRO-2011/00090, Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) - Software Evaluation Report2011-10-26026 October 2011 Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) - Software Evaluation Report Project stage: Supplement GNRO-2011/00091, Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) V&V Summary Test Report2011-11-0808 November 2011 Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) V&V Summary Test Report Project stage: Supplement GNRO-2011/00110, Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) V&V Summary Test Report2011-12-0101 December 2011 Supplemental Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531) V&V Summary Test Report Project stage: Supplement ML1204406602012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 11/29/2011 Affidavit Executed by J. Harrison, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00110 Project stage: Withholding Request Acceptance ML1204406382012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 9/22/2011 Affidavit Executed by J. Harrison, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00066 Project stage: Withholding Request Acceptance ML1204406532012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 11/3/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00091 Project stage: Withholding Request Acceptance ML1204406022012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 5/19/2011 Affidavit Executed by J. Harrison, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00039 Project stage: Withholding Request Acceptance ML1204406162012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 5/25/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00042 Project stage: Withholding Request Acceptance ML1204406232012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 6/23/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00045 Project stage: Withholding Request Acceptance ML1204406272012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 7/21/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00057 Project stage: Withholding Request Acceptance ML1204406462012-02-27027 February 2012 Request for Withholding Information from Public Disclosure, 10/20/2011 Affidavit Executed by E. Schrull, GE-Hitachi Nuclear Energy Americas LLC, Attachment 1 to GNRO-2011/00090 Project stage: Withholding Request Acceptance ML1210701392012-04-0202 April 2012 Email Correction to Technical Specification Table 3.3.1-1 Project stage: Other ML1209403902012-04-16016 April 2012 Correction to Technical Specification (TS) Page 3.3-6 for Amendment No. 188, Revise TSs to Reflect Installation of Digital GE-Hitachi Nuclear Measurement Analysis and Control Power Range Neutron Monitoring System Project stage: Other GNRO-2012/00031, Supplemental Information - License Conditions, Extended Power Uprate2012-04-26026 April 2012 Supplemental Information - License Conditions, Extended Power Uprate Project stage: Supplement GNRO-2013/00031, Corrected Response to NRC Request for Additional Information Regarding License Amendment Request for Power Range Neutron Monitoring System2013-05-22022 May 2013 Corrected Response to NRC Request for Additional Information Regarding License Amendment Request for Power Range Neutron Monitoring System Project stage: Response to RAI ML13149A2252013-06-24024 June 2013 Correction to Safety Evaluation Page 60 (Redacted) for Amendment No. 188, Revise TSs to Reflect Installation of Digital GE-Hitachi Nuclear Measurement Analysis and Control Power Range Neutron Monitoring System Project stage: Approval 2011-04-27
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Category:Letter type:GNRO
MONTHYEARGNRO-2023/00014, License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2023-06-0606 June 2023 License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b GNRO-2023/00015, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2023-06-0606 June 2023 Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors GNRO-2021/00037, 2021 Annual Report of Changes and Errors to 10 CFR 50.46 Analysis Grand Gulf Nuclear Station, Unit 12021-11-30030 November 2021 2021 Annual Report of Changes and Errors to 10 CFR 50.46 Analysis Grand Gulf Nuclear Station, Unit 1 GNRO-2021/00017, Notification of Readiness for Supplemental Inspection2021-06-22022 June 2021 Notification of Readiness for Supplemental Inspection GNRO-2021/00014, Inservice Testing Program Relief Request VRR-GGNS-2021-1 Pressure Isolation Valve Testing Frequency2021-06-0101 June 2021 Inservice Testing Program Relief Request VRR-GGNS-2021-1 Pressure Isolation Valve Testing Frequency GNRO-2021/00015, Annual Radioactive Effluent Release Report2021-04-28028 April 2021 Annual Radioactive Effluent Release Report GNRO-2021/00011, Revision of Original Report of 10CFR50.59 and Commitments Change Evaluations - July 1, 2018 Through May 21, 20202021-04-19019 April 2021 Revision of Original Report of 10CFR50.59 and Commitments Change Evaluations - July 1, 2018 Through May 21, 2020 GNRO-2021/00012, Annual Report of Individual Monitoring - NRC Form 5 for 2020 Per 10 CFR 20.22062021-04-13013 April 2021 Annual Report of Individual Monitoring - NRC Form 5 for 2020 Per 10 CFR 20.2206 GNRO-2020/00045, 2020 Report of Changes and Errors to 10 CFR 50.46 Analysis2020-12-16016 December 2020 2020 Report of Changes and Errors to 10 CFR 50.46 Analysis GNRO-2020/00034, Notification of Spent Fuel Cask Use2020-10-0808 October 2020 Notification of Spent Fuel Cask Use GNRO-2020/00033, Response to NRC Integrated Inspection Report 05000416/20200022020-09-10010 September 2020 Response to NRC Integrated Inspection Report 05000416/2020002 GNRO-2020/00029, Report of 10 CFR 72.48 Evaluations July 1, 2018 Through June 30, 20202020-08-18018 August 2020 Report of 10 CFR 72.48 Evaluations July 1, 2018 Through June 30, 2020 GNRO-2020/00022, Report of Technical Specification Bases Changes2020-07-21021 July 2020 Report of Technical Specification Bases Changes GNRO-2020/00027, Core Operating Limits Report (COLR) Cycle 23 Revision 1 for Grand Gulf Nuclear Station, Unit 1 (GGNS)2020-07-16016 July 2020 Core Operating Limits Report (COLR) Cycle 23 Revision 1 for Grand Gulf Nuclear Station, Unit 1 (GGNS) GNRO-2020/00023, Response to Request for Additional Information - License Amendment Request for Permanent Extension of Appendix J Type a Integrated Leakage Rate Test Frequencies2020-06-26026 June 2020 Response to Request for Additional Information - License Amendment Request for Permanent Extension of Appendix J Type a Integrated Leakage Rate Test Frequencies GNRO-2020/00020, Core Operating Limits Report (COLR) Cycle 23, and Pressure and Temperature Limits Report (PTLR) Update for Grand Gulf Nuclear Station, Unit 1 (GGNS)2020-05-0505 May 2020 Core Operating Limits Report (COLR) Cycle 23, and Pressure and Temperature Limits Report (PTLR) Update for Grand Gulf Nuclear Station, Unit 1 (GGNS) GNRO-2020/00018, Annual Radiological Effluent Release Report2020-04-30030 April 2020 Annual Radiological Effluent Release Report GNRO-2020/00016, Annual Report of Individual Monitoring -NRC Form 5 for 2019 Per 10 CFR 20.22062020-04-16016 April 2020 Annual Report of Individual Monitoring -NRC Form 5 for 2019 Per 10 CFR 20.2206 GNRO-2020/00015, Response to Request for Additional Information - License Amendment Request for One-Cycle Extension of Appendix J Type a Integrated Leakage Rate Test and Drywell Bypass Leakage Rate Test2020-04-0707 April 2020 Response to Request for Additional Information - License Amendment Request for One-Cycle Extension of Appendix J Type a Integrated Leakage Rate Test and Drywell Bypass Leakage Rate Test GNRO-2020/00007, Spent Fuel Storage Radioactive Effluent Release Report for 20192020-02-20020 February 2020 Spent Fuel Storage Radioactive Effluent Release Report for 2019 GNRO-2020/00006, License Amendment Request for Permanent Extension of Appendix J Type a Integrated Leakage Rate Test Frequencies2020-02-19019 February 2020 License Amendment Request for Permanent Extension of Appendix J Type a Integrated Leakage Rate Test Frequencies GNRO-2019/00052, Report of Changes and Errors to 10 CFR 50.46 Analysis2019-12-13013 December 2019 Report of Changes and Errors to 10 CFR 50.46 Analysis GNRO-2019/00051, Notification of Readiness of 92723 Inspection2019-12-11011 December 2019 Notification of Readiness of 92723 Inspection GNRO-2019/00045, Emergency Plan, Revision 792019-10-29029 October 2019 Emergency Plan, Revision 79 GNRO-2019/00037, Notification of Spent Fuel Cask Use2019-09-20020 September 2019 Notification of Spent Fuel Cask Use GNRO-2019/00036, Correction to Gnro 2019-00017 Emergency Plan Revision 782019-08-0808 August 2019 Correction to Gnro 2019-00017 Emergency Plan Revision 78 GNRO-2019/00027, Notification of Readiness of 95001 Supplemental Inspections2019-07-0303 July 2019 Notification of Readiness of 95001 Supplemental Inspections GNRO-2019/00031, Annual Report of Individual Monitoring - NRC Form 5 for 2018 Per 10 CFR 20.2206 - Corrected Report2019-06-25025 June 2019 Annual Report of Individual Monitoring - NRC Form 5 for 2018 Per 10 CFR 20.2206 - Corrected Report GNRO-2019/00028, Supplement to Revise Technical Specification (TS) 3.3.1.1, Reactor Protection System (RPS) Instrumentation, and TS 3.3.4.1, End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation.2019-06-13013 June 2019 Supplement to Revise Technical Specification (TS) 3.3.1.1, Reactor Protection System (RPS) Instrumentation, and TS 3.3.4.1, End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation. GNRO-2019/00026, Response to Requests for Additional Information Regarding Relief Request Number GG-ISI-023, Inservice Inspection Impracticality - Limited Coverage Examinations During the Third 10-Year Inservice Inspection Interval2019-05-0606 May 2019 Response to Requests for Additional Information Regarding Relief Request Number GG-ISI-023, Inservice Inspection Impracticality - Limited Coverage Examinations During the Third 10-Year Inservice Inspection Interval GNRO-2019/00024, Annual Radioactive Effluent Release Report2019-04-30030 April 2019 Annual Radioactive Effluent Release Report GNRO-2019/00020, Annual Radiological Operating Report (AREOR)2019-04-30030 April 2019 Annual Radiological Operating Report (AREOR) GNRO-2019/00022, Annual Report of Individual Monitoring - NRC Form 5 for 2018 Per 10 CFR 20.22062019-04-22022 April 2019 Annual Report of Individual Monitoring - NRC Form 5 for 2018 Per 10 CFR 20.2206 GNRO-2019/00017, Emergency Plan, Revision 782019-03-14014 March 2019 Emergency Plan, Revision 78 GNRO-2019/00014, Snubber Testing Program for Fourth Inspection Interval2019-03-13013 March 2019 Snubber Testing Program for Fourth Inspection Interval GNRO-2019/00012, Internal Events Probabilistic Risk Assessment (PRA) Sensitivity Study Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequency Requirements to a Licensee Controlled Program2019-03-0606 March 2019 Internal Events Probabilistic Risk Assessment (PRA) Sensitivity Study Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequency Requirements to a Licensee Controlled Program GNRO-2019/00016, Spent Fuel Storage Radioactive Effluent Release Report for 20182019-02-21021 February 2019 Spent Fuel Storage Radioactive Effluent Release Report for 2018 GNRO-2019/00003, Application to Revise Technical Specification (TS) 3.3.1.1, Reactor Protection System (RPS) Instrumentation, and TS 3.3.4.1, End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation2019-01-23023 January 2019 Application to Revise Technical Specification (TS) 3.3.1.1, Reactor Protection System (RPS) Instrumentation, and TS 3.3.4.1, End of Cycle Recirculation Pump Trip (EOC-RPT) Instrumentation GNRO-2018/00057, Submittal of Revision 17 to the Grand Gulf Nuclear Station Physical Security, Safeguards Contingency, and Training and Qualification Plan2018-12-0404 December 2018 Submittal of Revision 17 to the Grand Gulf Nuclear Station Physical Security, Safeguards Contingency, and Training and Qualification Plan GNRO-2018/00055, Response to Request for Additional Information for Technical Specification Change Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequency Requirements to a ...2018-11-30030 November 2018 Response to Request for Additional Information for Technical Specification Change Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequency Requirements to a ... GNRO-2018/00054, Relief Request No. GG-ISI-023, Inservice Inspection Impracticality: Limited Coverage Examination During the Third 10-Year Inservice Inspection Interval2018-11-30030 November 2018 Relief Request No. GG-ISI-023, Inservice Inspection Impracticality: Limited Coverage Examination During the Third 10-Year Inservice Inspection Interval GNRO-2018/00052, License Amendment Request to Incorporate Tornado Missile Risk Evaluator Into Licensing Basis - Partial Response to Request for Additional Information and Extension of Response to Request for Additional Information2018-10-24024 October 2018 License Amendment Request to Incorporate Tornado Missile Risk Evaluator Into Licensing Basis - Partial Response to Request for Additional Information and Extension of Response to Request for Additional Information GNRO-2018/00051, Supplement to Revise Technical Specifications to Adopt Technical Specification Task Force Traveler TSTF-542, Reactor Pressure Vessel Water Inventory Control2018-10-23023 October 2018 Supplement to Revise Technical Specifications to Adopt Technical Specification Task Force Traveler TSTF-542, Reactor Pressure Vessel Water Inventory Control GNRO-2018/00046, Submittal of 2018 Report of Changes and Errors to 10CFR50.462018-10-16016 October 2018 Submittal of 2018 Report of Changes and Errors to 10CFR50.46 GNRO-2018/00047, Submittal of 2018 Inservice Inspection Summary Report2018-10-16016 October 2018 Submittal of 2018 Inservice Inspection Summary Report GNRO-2018/00048, Response to Request for Additional Information License Amendment Request, Adoption of Emergency Action Level Scheme Pursuant to NEI 99-01, Revision 62018-10-10010 October 2018 Response to Request for Additional Information License Amendment Request, Adoption of Emergency Action Level Scheme Pursuant to NEI 99-01, Revision 6 GNRO-2018/00042, Core Operating Limits Report Cycle 22, Revision 12018-09-18018 September 2018 Core Operating Limits Report Cycle 22, Revision 1 GNRO-2018/00043, Revised Offsite Dose Calculation Manual2018-09-18018 September 2018 Revised Offsite Dose Calculation Manual GNRO-2018/00039, Report of Technical Specification Bases Changes2018-08-20020 August 2018 Report of Technical Specification Bases Changes GNRO-2018/00040, Report of 10CFR50.59 Evaluations and Commitment Change Evaluations - July 1, 2016 Through June 30, 20182018-08-20020 August 2018 Report of 10CFR50.59 Evaluations and Commitment Change Evaluations - July 1, 2016 Through June 30, 2018 2023-06-06
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Text
Entergy Operations, Inc.
P. O. Box 756 Port Gibson, MS 39150 Michael A. Krupa Director, Extended Power Uprate Grand Gulf Nuclear Station Tel. (601) 437-6694 GNRO-2011/00089 October 18, 2011 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
SUBJECT:
Response to NRC Request for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531)
Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29
REFERENCES:
- 1. Entergy Operations, Inc. letter to the NRC (GNRO-2009/00054),
License Amendment Request Power Range Neutron Monitoring System Upgrade, November 3, 2009 (ADAMS Accession No. ML093140463)
- 2. Entergy Operations, Inc. letter to the NRC (GNRO-2011/00042),
Responses to NRC Requests for Additional Information Pertaining to License Amendment Request for Power Range Neutron Monitoring System (TAC No. ME2531), May 31, 2011 (ADAMS Accession No. ML111520123)
Dear Sir or Madam:
In Reference 1, Entergy Operations, Inc. (Entergy) submitted to the NRC a license amendment request (LAR), which proposes to revise the Grand Gulf Nuclear Station (GGNS)
Technical Specifications (TS) to reflect installing the digital General Electric-Hitachi (GEH)
Nuclear Measurement Analysis and Control (NUMAC) Power Range Neutron Monitoring (PRNM) System.
In Reference 2, Entergy submitted to the NRC responses to several Requests for Additional Information (RAIs) to support the staff s review and approval of Reference 1. In a telephone conversation held on October 12, 2011, Entergy discussed with the NRC Project Manager for GGNS an error discovered in the response to RAI 24, which was included in Attachment 1 of Reference 2. Specifically, a statement provided in the response to RAI 24 incorrectly denoted the reactor power level at which the Oscillation Power Range Monitor (OPRM) is enabled at GGNS to be 24%. The correct level is 29%.
GNRO-2011/00089 Page 2 of 2 Entergy is providing a corrected, revised page of the response in Attachment 1. The change is indicated by a revision bar in the margin of the replacement page. This page replaces the page of the original response. Note the page number in Attachment 1 is consistent with the page number in Attachment 1 of Reference 2.
The No Significance Hazards Determination and the Environmental Consideration provided in Reference 1 are not impacted by any information contained in this letter.
This letter contains no new commitments.
If you have any questions or require additional information, please contact Mr. Guy Davant at (601) 368-5756.
I declare under penalty of perjury that the foregoing is true and correct; executed on October 18, 2011.
Sincerely, MAK/ghd
Attachment:
Changed Page to the Response to NRC RAI 24 Pertaining to License Amendment Request for the Power Range Neutron Monitoring System Upgrade cc: Mr. Elmo E. Collins, Jr.
Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4005 U. S. Nuclear Regulatory Commission ATTN: Mr. A. B. Wang, NRR/DORL (w/2)
ATTN: ADDRESSEE ONLY ATTN: Courier Delivery Only Mail Stop OWFN/8 B1 11555 Rockville Pike Rockville, MD 20852-2378 State Health Officer Mississippi Department of Health P. O. Box 1700 Jackson, MS 39215-1700 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150
ATTACHMENT GRAND GULF NUCLEAR STATION GNRO-2011/00089 CHANGED PAGE TO THE RESPONSE TO NRC RAI 24 PERTAINING TO LICENSE AMENDMENT REQUEST FOR THE POWER RANGE NEUTRON MONITORING SYSTEM UPGRADE Notes The page number specified in this attachment is consistent with the page number in Attachment 1 of the original RAI response submittal (NRC ADAMS Accession No. ML1111520123).
The original page of the RAI response was marked GEH Proprietary ; however, this replacement page contains no such information.
Revised Page 71 of 101 The OPRM is a sub-system within PRNMS for stability monitoring and mitigation, which is enabled above a predetermined power level (29% for GGNS). OPRM trip setpoints correspond to a pre-determined number of confirmed oscillations and pre-determined oscillation amplitude, and are not calculated by GEH setpoint methodology. These OPRM setpoints do not have ALs, AVs, and NTSPs with margins based on instrument error and GEH setpoint methodology. This was explained in the response to RAI 10 of Reference 2.
The following information is excerpted from that response:
The OPRM setpoints are nominal setpoints, which are established using a comprehensive BWR Owners Group (BWROG) methodology for stability analysis approved by the NRC.
There is no AL or AV with defined instrument error margins to the NTSP for the OPRM setpoints. Note that OPRM setpoints are not considered to be Limiting Safety System Settings (LSSSs) since stability is a special event, and not an Anticipated Operational Occurrence (AOO), which defines LSSSs.
These OPRM setpoints are established as nominal values based on cycle specific reload stability analysis and are included in the Core Operating Limits Report (COLR).
Use of nominal setpoints for the OPRM Upscale function has been addressed during the licensing of PRNMS at Browns Ferry Unit 1 and at Monticello, previously. Note also that the OPRM trip setpoints are not listed in the BWR/6 Standard Technical Specifications.
Demonstration calculations for the nominal setpoints of the OPRM Upscale function are available for review. They may be viewed by the NRC at a GEH office, upon request.
The power level at which OPRM is enabled is also a nominal setpoint determined by stability methodology and not by GEH setpoint methodology. This enabling setpoint is considered a permissive and is not annotated in TSTF-493.
(d) How the performance data is used to establish the final setpoint, and as-left and as-found tolerances Setpoint Calculations The PRNM setpoints are calculated as described in the General Description section, above, using errors specified in the PRNM specifications as described Section (a), above. The specified PRNM errors are conservative and have high confidence (95%). Thus, the PRNM setpoint calculations based on specified PRNM errors and the approved GEH setpoint methodology meet the RG 1.105 95/95 requirements for AL/NTSPF margin. Specifically, since NTSP1 (LTSP) has the required margin to the AL to meet RG 1.105 requirements and since NTSPF is equal or more conservative than NTSP1, it also meets RG 1.105 requirements.
The equations for calculating the setpoints (AV, NTSP1, and NTSPF) and relevant explanations are given in the response to RAI 10 of Reference 2. In that response, the final setpoint is referred to as NTSP(Adj) whereas in this response it is referred to as NTSPF for clarity. Because NTSP1 (LTSP) meets the RG 1.105 requirements and NTSPF is generally more and never less conservative than NTSP1, it also meets RG 1.105 requirements. As an example, according to GEH methodology, the AL/NTSP1 margin is the algebraic addition of the bias errors plus a random error margin equal to 1.645
- StndDev of the total channel