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MONTHYEARML16326A2682016-11-21021 November 2016 2016/11/21 E-mail from R.Guzman to E.Villar - Acceptance Review Determination - Control Room Emergency Ventilation System LAR Project stage: Acceptance Review ML17304A0202017-10-31031 October 2017 Licensing Basis Charge for Evaluating the Need for Tornado Generated Missile Barriers - Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 (TAC Nos. M90621 and M90622) Project stage: Other ML17304A9412017-11-13013 November 2017 Request for Additional Information Regarding Risk-Informed Technical Specification Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-0001) Project stage: RAI ML17346A9092017-12-21021 December 2017 Request for Additional Information Regarding Risk-Informed Technical Specification Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-0001) Project stage: RAI ML18011A6652018-01-11011 January 2018 Response to Request for Additional Information License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk-Informed Extended Completion Times. Project stage: Response to RAI ML18018B3402018-01-18018 January 2018 Response to Request for Additional Information License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk-Informed Extended Completion Times. Project stage: Response to RAI ML18128A3842018-05-0808 May 2018 Plants, Units 1 and 2 - Draft Request for Additional Information Regarding Risk-Informed Technical Specification Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-0001) Project stage: Draft RAI ML18138A1372018-05-22022 May 2018 Plants, Units 1 and 2 - Request for Additional Information Regarding Risk Informed Technical Specification Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-0001) Project stage: RAI ML18143A3102018-05-24024 May 2018 Plants, Units 1 and 2 - Audit Plan in Support of the Review of the License Amendment Request to Allow the Use of Risk-Informed Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-001) Project stage: Other ML18172A1452018-06-21021 June 2018 Response to Request for Additional Information License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk-Informed ... Project stage: Response to RAI ML18239A2602018-08-27027 August 2018 Supplement to Response to Request for Additional Information License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 1, Provide Risk .. Project stage: Supplement ML18270A1302018-10-30030 October 2018 Issuance of Amendment Nos. 326 and 304 to Add Risk-Informed Completion Time Program Project stage: Approval ML18318A0142018-11-30030 November 2018 Correction to Amendment Nos. 326 and 304 Add Risk-Informed Completion Time Program Project stage: Other 2018-10-30
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Category:Audit Plan
MONTHYEARML22214A0042022-08-0202 August 2022 Audit Plan to Support the Review of Amendments to Revise Criticality Safety Analysis Methodologies (Epids L-2022-LLA-0085, L-2021-LLA-0124, and L-2021-LLA-0159) ML21200A0742021-07-20020 July 2021 Audit Plan in Support of Review of License Amendment Request Regarding Change Spent Fuel Pool Cooling Design Basis ML20174A0592020-06-30030 June 2020 Regulatory Audit Summary Regarding License Amendment Request for Revision to Technical Specification Surveillance Requirements Relating to Emergency Diesel Generator ML20098G9652020-05-18018 May 2020 Audit Plan in Support of Review of License Amendment Request Regarding Accident Tolerant Fuel Lead Test Assemblies ML20052E9852020-02-28028 February 2020 Audit Plan in Support of Review of License Amendment Request to Revise Technical Specification Surveillance Requirements Relating to Emergency Diesel Generator ML19065A0442019-03-20020 March 2019 Audit Plan in Support of Review of License Amendment Request to Allow Use of Risk-Informed Categorization and Treatment of Structures, Systems, and Components ML18345A1942018-12-21021 December 2018 Plants, Units 1 and 2 - Regulatory Audit Risk-Informed Approach to License Amendment Request for Closure of Generic Safety Issue-191 ML18143A3102018-05-24024 May 2018 Plants, Units 1 and 2 - Audit Plan in Support of the Review of the License Amendment Request to Allow the Use of Risk-Informed Completion Times (CAC Nos. MF7415 and MF7416; EPID L-2016-LLA-001) ML16259A1892016-12-0505 December 2016 Nuclear Regulatory Commission Plan for the Audit of Mitigation Strategies Assessment Submittals Related to Order EA-12-049, Order to Modify Licenses With Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events ML16249A0032016-09-15015 September 2016 Regulatory Audit Plan for September 19-21, 2016, Audit at Kennett Square, PA in Support of the License Amendment Request to Implement Risk-Informed TS Initiative 4B ML15083A0182015-05-26026 May 2015 Regulatory Audit Regarding the Pressurizer Safety Valves License Amendment Request (Tac No. MF3541) ML14356A0032015-02-10010 February 2015 Audit of Licensee Responses to the Expedited Seismic Evaluation Process to Support Implementation of Near-Term Task Force Recommendation 2.1, Seismic ML14336A2562014-12-0404 December 2014 Regulatory Audit Plan Regarding the National Fire Protection Association Standard 805 Transition License Amendment Request (Tac Nos. MF2993 and MF2994) ML14210A4492014-08-0505 August 2014 Plan for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Instrumentation Related to Orders EA-12-049 and EA-12-051 ML14083A6202014-03-26026 March 2014 Nuclear Regulatory Commission Audits of Licensee Responses to Reliable Spent Fuel Pool Instrumentation Order EA-12-051 2022-08-02
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MONTHYEARIR 05000317/20230042024-02-0101 February 2024 Integrated Inspection Report 05000317/2023004 and 05000318/2023004 ML24029A0102024-01-29029 January 2024 Request for Information and Notification of Conduct of IP 71111.21.N.04, Age-Related Degradation, Reference Inspection Report 05000317/2024010 and 05000318/2024010 ML24003A8872024-01-19019 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0033 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) 05000318/LER-2023-004, Submittal of LER 2023-004-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Submittal of Automatic Reactor Trip from Reactor Protection System Actuation Due to Loss of Unit Service Transformer2024-01-16016 January 2024 Submittal of LER 2023-004-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Submittal of Automatic Reactor Trip from Reactor Protection System Actuation Due to Loss of Unit Service Transformer ML24011A0732024-01-11011 January 2024 Proposed Alternative to the Requirements for Repair/Replacement of Saltwater (SW) System Buried Piping 05000318/LER-2023-002, Forward LER 2023-002-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Automatic Reactor Trip from Reactor Protection System Actuation Due to Loss of Unit Service Transformer2024-01-0808 January 2024 Forward LER 2023-002-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Automatic Reactor Trip from Reactor Protection System Actuation Due to Loss of Unit Service Transformer 05000318/LER-2023-003, Forward LER 2023-003-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Manual Actuation of Auxiliary Feedwater System Due to 22 Steam Generator Feedwater Pump Trip2024-01-0808 January 2024 Forward LER 2023-003-00 for Calvert Cliffs Nuclear Power Plant, Unit 2, Manual Actuation of Auxiliary Feedwater System Due to 22 Steam Generator Feedwater Pump Trip ML24005A0222024-01-0505 January 2024 Revised Steam Generator Tube Inspection Reports ML23304A0642024-01-0202 January 2024 Issuance of Amendment No. 349 to Modify the Long-Term Coupon Surveillance Program RS-23-125, Request for Exemption from 10 CFR 2.109(b)2023-12-0707 December 2023 Request for Exemption from 10 CFR 2.109(b) ML23331A2992023-11-27027 November 2023 Submittal of Condition Prohibited by Technical Specifications Due to Failure to Sample Diesel Generator Fuel Oil Storage Tank IR 05000317/20230102023-11-20020 November 2023 Biennial Problem Identification and Resolution Inspection Report 05000317/2023010 and 05000318/2023010 ML23318A4722023-11-14014 November 2023 Supplement to License Amendment Request to Adopt TSTF-59-A ML23317A1032023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information ML23317A1192023-11-10010 November 2023 Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums ML23310A0442023-11-0707 November 2023 Project Manager Assignment IR 05000317/20230402023-11-0202 November 2023 95001 Supplemental Inspection Report 05000317/2023040 and Follow-Up Assessment Letter IR 05000317/20230032023-11-0101 November 2023 Integrated Inspection Report 05000317/2023003 and 05000318/2023003 IR 05000317/20230902023-10-26026 October 2023 Final Significance Determination of a White Finding with Assessment Follow-Up and Notice of Violation; Inspection Report 05000317/2023090 ML23289A1202023-10-16016 October 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation 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 RS-23-108, Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles2023-10-11011 October 2023 Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles RS-23-105, Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections2023-10-10010 October 2023 Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections ML23279A1202023-10-0606 October 2023 Response to NRC Inspection Report and Preliminary White Finding IR 05000317/20230502023-09-29029 September 2023 Special Inspection Report 05000317/2023050 and Preliminary White Finding and Apparent Violation ML23272A1032023-09-29029 September 2023 Condition Prohibited by Technical Specifications Due to Inoperable Nuclear Instrumentation at Very Low Power IR 05000317/20234012023-09-18018 September 2023 Cyber Security Inspection Report 05000317/2023401 and 05000318/2023401 ML23254A0012023-09-0505 September 2023 Registration of Use of Casks to Store Spent Fuel IR 05000317/20230052023-08-31031 August 2023 Updated Inspection Plan for Calvert Cliffs Nuclear Power Plant, Units 1 and 2 (Report 05000317/2023005 and 05000318/2023005) ML23158A1952023-08-30030 August 2023 R. E. Ginna - Issuance of Amendments to Adopt TSTF-273-A, Revision 2, Safety Function Determination Program Clarifications ML23241A8412023-08-29029 August 2023 Response to Request for Additional Information - Proposed Alternative to the Requirements for Repair/Replacement of Saltwater (SW) System Buried Piping ML23240A3872023-08-28028 August 2023 Senior Reactor and Reactor Operator Initial License 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 ML23219A1662023-08-16016 August 2023 Request for Additional Information Regarding Proposed Alternative to the Requirements for Repair/Replacement of Saltwater (SW) System Buried Piping (EPID: L-2023-LLR-0006) - Non-proprietary ML23228A1002023-08-15015 August 2023 Notification of Readiness for NRC 95001 Inspection ML23188A0402023-08-0808 August 2023 Issuance of Amendment Nos. 346 and 324 Adoption of TSTF-577, Revised Frequencies for Steam Generator Tube Inspections, Revision 1 ML23214A1572023-08-0707 August 2023 Correction to the Renewed Facility Operating License Page 3 in Amendment No 345 IR 05000317/20230022023-08-0303 August 2023 Integrated Inspection Report 05000317/2023002 ML23188A0512023-07-13013 July 2023 Correction to the Renewed Facility Operating License Pages in Amendment Nos. 336 and 314 ML23186A0372023-07-13013 July 2023 Correction to the Renewed Facility Operating License Pages in Amendment Nos. 340 and 318 IR 05000317/20233012023-07-12012 July 2023 Initial Operator Licensing Examination Report 05000317/2023301 and 05000318/2023301 IR 05000317/20230122023-07-10010 July 2023 Commercial Grade Dedication Report 05000317/2023012 and 05000318/2023012 ML23180A2362023-06-29029 June 2023 Correction of Errors on Technical Specification Pages RS-23-083, Withdrawal - Proposed Alternatives Related to the Steam Generators2023-06-27027 June 2023 Withdrawal - Proposed Alternatives Related to the Steam Generators ML23156A6752023-06-20020 June 2023 Request for Withholding Information from Public Disclosure for Proposed Alternative to the Requirements for Repair/Replacement of Saltwater System Buried Piping 2024-02-01
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Bryan C. Hanson Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 May 24, 2018
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNITS 1 AND 2 -AUDIT PLAN IN SUPPORT OF THE REVIEW OF THE LICENSE AMENDMENT REQUEST TO ALLOW THE USE OF RISK-INFORMED COMPLETION TIMES (CAC NOS. MF7415 AND MF7416; EPID L-2016-LLA-0001)
Dear Mr. Hanson:
By letter dated February 25, 2016 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 16060A223), as supplemented by letters dated April 3, 2017 (ADAMS Accession No. ML 17094A591 ), January 11, 2018 (ADAMS Accession No. ML 18011A665), and January 18, 2018 (ADAMS Accession No. ML 180186340), Exelon Generation Company, LLC submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) proposing to modify the Calvert Cliffs Nuclear Power Plant, Units 1 and 2, Technical Specification (TS} requirements to permit the use of risk-informed completion times. The proposed changes would impact the following electrical power systems TS: TS 3.8.1, "AC Sources -Operating," TS 3.8.4, "DC Sources -Operating," TS 3.8.7, "Inverters -Operating," and TS 3.8.9, "Distribution Systems -Operating." The NRC staff will conduct a regulatory audit to support its review of the license amendment request. The audit will be conducted at Calvert Cliffs Nuclear Power Plant in Lusby, MD on May 25, 2018. The audit plan is enclosed. The logistics and scope of the audit was discussed with your staff on May 23, 2018.
B. Hanson If you have any questions, please contact me by telephone at 301-415-2871 or by e-mail at Michael.Marshall@nrc.gov. Docket Nos. 50-317 and 50-318
Enclosure:
Audit Plan cc: Listserv Sincerely, Michael L. Marshall, Jr., Senior Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation AUDIT PLAN REGARDING RISK-INFORMED TECHNICAL SPECIFICATION COMPLETION TIMES EXELON GENERATION COMPANY, LLC CALVERT CLIFFS NUCLEAR POWER PLANT, UNITS 1 AND 2 DOCKET NOS. 50-317 AND 50-318 I. BACKGROUND By letter dated February 25, 2016 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 16060A223), as supplemented by letters dated April 3, 2017 (ADAMS Accession No. ML 17094A591 ), January 11, 2018 (ADAMS Accession No. ML 18011A665), and January 18, 2018 (ADAMS Accession No. ML 18018B340), Exelon Generation Company, LLC submitted a license amendment request (LAR) to the U.S. Nuclear Regulatory Commission (NRC) proposing to modify the Calvert Cliffs Nuclear Power Plant, Units 1 and 2 (Calvert Cliffs), Technical Specification (TS} requirements to permit the use of risk-informed completion times (RICTs). The proposed changes would impact the following electrical power systems TS: TS 3.8.1, "AC Sources -Operating," TS 3.8.4, "DC Sources -Operating," TS 3.8.7, "Inverters -Operating," and TS 3.8.9, "Distribution Systems -Operating." II. REGULATORY AUDIT BASES Section 36(c)(2) of Title 10 of Code of Federal Regulation Part 50 requires in part that limiting conditions of operations be included in TSs and that licensees shall follow any remedial action permitted by the TS until the condition can be met. The TSs for Calvert Cliffs, Units 1 and 2, contain limiting conditions of operations (LCOs) that prescribe completion times for remedial actions. The licensee has proposed using its probabilistic risk assessment to determine informed completion times that may be used in lieu of the prescribed completion times. Regulatory Guide (RG) 1.174, Revision 3, "An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis," January 2018 (ADAMS Accession No. ML 17317A256), describes an acceptable risk-informed approach for assessing the nature and impact of proposed permanent licensing basis changes by considering engineering issues and applying risk insights. One of the principles of risk-informed decsionmaking, as described in the RG, is for the change to be consistent with the defense-in-depth philosophy. The NRC staff reviewed the defense-in-depth of the electrical power systems for the TS conditions that would be impacted by the proposed RICT program with respect to the following description of defense-in-depth: Defense-in-depth is an approach to designing and operating nuclear facilities that prevents and mitigates accidents that release radiation or hazardous materials. The key is creating multiple independent and redundant layers of defense to compensate for potential human and mechanical failures so that no single layer, Enclosure no matter how robust, is exclusively relied upon. Defense-in-depth includes the use of access controls, physical barriers, redundant and diverse key safety functions, and emergency response measures. The defense-in-depth philosophy is incorporated into the design of the electrical power systems by having multiple or redundant and independent layers of electrical power sources or subsystems to ensure power to equipment required to prevent and mitigate postulated design basis accidents, events, transients, and abnormal occurrences assuming a single failure. The LCOs for the electrical power systems TS (in operating modes) require redundant electrical power sources or equipment that are capable of performing necessary safety functions assuming a single failure to be operable. If an electrical power source or equipment required by a TS LCO is inoperable, the required redundancy (i.e., defense-in-depth) will be reduced or lost, the LCO will not be met, and an applicable TS condition will be entered for remedial actions. The NRC staff is evaluating the proposed change to confirm that sufficient defense-in-depth associated with each electrical TS condition is maintainted during the RICT program entry for the specific TS condition. As part of evaluation, the NRC staff is considering supplemental electrical power sources or equipment (not necessarily required by the LCOs) that are available at Calvert Cliffs and capable of performing the same safety function of the inoperable electrical power source or equipment. Ill. REGULATORY AUDIT SCOPE AND METHODOLOGY The scope of the audit includes the following to support the defense-in-depth evaluation:
- Identification of equipment or power sources that can provide the same function as the equipment or power source credited in the LAR design success criteria. These equipment or power sources (1) can be either safety or non-safety related and (2) have not been identified or credited either in the plant's licensing basis, the LAR design success criteria, or the LCO required equipment or power sources.
- Identification of additional Risk Management Actions (RMAs) for TS conditions considered low defense-in-depth.
- Approaches to address the time dependency (e.q., how the battery's capacity during discharge is monitored) for TS conditions that may have time dependency. IV. INFORMATION AND OTHER MATERIAL NECESSARY FOR THE REGULATORY AUDIT Documentation A hardcopy or electronic copy of the following documents should be available to the audit team:
- Procedure(s) or other document(s) that contain information related to the operation of the SMECO line.
- Procedure(s) or other document(s) that contain information related to station slackout (SBO) diesel generator (DG).
- Procedure(s) or other document(s) that contain information related to FLEX DGs.
- Procedure(s) or other document(s) that contain information related to the monitoring of battery's capacity during discharge. Discussion Topics 1. How much time is required to connect the SMECO line to the 13 kV busses? Does this timeline meet the Chapter 14 timeline for the design basis accident? 2. Given the timeline to start the SBO DG is within one hour, as specified in Calvert Cliffs updated final safety analysis report, Chapter 14, prior to an entry of TS 3.8.1, Condition B or H, can the SBO DG be ready, as a RMA, to accept loads within 10 seconds as the emergency DGs? 3. For the following TS conditions, please provide the other available equipment or power sources that can provide the same function as the equipment/power source credited in the LAR design success criteria. These equipment or power sources (1) can be either safety or non-safety related and (2) should not be credited either in the LAR design success criteria or the LCO required equipment/power sources:
- TS 3.8.9 Conditions A, B, and C 4. For each of the TS conditions listed in question #3 above, which the defense-in-depth found to be low, please provide RMAs specifically addressing additional measures that need to be in place. 5. For TS conditions that may have time dependency (e.g., batteries), please describe how the proposed RICT address the time dependency (e.g., how the battery's capacity during discharge is monitored). V. AUDIT TEAM ASSIGNMENTS The members of the audit team will be:
- Michael Marshall, project manager and team lead, NRR VI. LOGISTICS The audit will be conducted at Calvert Cliffs Nuclear Power Plant in Lusby, MD on May 25, 2018. The audit entrance is scheduled to start at 10:00 am. The NRC project manager will coordinate any changes to the audit schedule and location with the licensee. VII. SPECIAL REQUESTS The NRC staff would like access to the following equipment and services:
- Enclosed room (or comparable space) with a table, chairs, and white board. VIII. DELIVERABLES An audit summary, which may be non-public, will be prepared within 90 days of the completion of the audit.
ML 18143A310 OFFICE DORL/LPL 1 /PM DORL/LPL 1 /LA DE/EE OB/BC TMartinez -Navedo NAME MMarshall I Betts (for JQuichoch) DATE 05/23/18 05/23/18 05/24/18