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Line 3: |
Line 3: |
| | issue date = 04/12/2018 | | | issue date = 04/12/2018 |
| | title = Request for Additional Information Regarding License Amendment Request to Revise Emergency Action Level Schemes (EPID-L-2017-LLA-0237) | | | title = Request for Additional Information Regarding License Amendment Request to Revise Emergency Action Level Schemes (EPID-L-2017-LLA-0237) |
| | author name = Purnell B A | | | author name = Purnell B |
| | author affiliation = NRC/NRR/DORL/LPLIII | | | author affiliation = NRC/NRR/DORL/LPLIII |
| | addressee name = Gropp R W | | | addressee name = Gropp R |
| | addressee affiliation = Exelon Generation Co, LLC | | | addressee affiliation = Exelon Generation Co, LLC |
| | docket = 05000220, 05000244, 05000317, 05000318, 05000410, 07200008, 07200067, 07201036 | | | docket = 05000220, 05000244, 05000317, 05000318, 05000410, 07200008, 07200067, 07201036 |
Request for Additional Information Regarding License Amendment Request to Revise Emergency Action Level Schemes (EPID-L-2017-LLA-0237)ML18102A237 |
Person / Time |
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Site: |
Calvert Cliffs, Nine Mile Point, Ginna, 07201036 ![Constellation icon.png](/w/images/b/be/Constellation_icon.png) |
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Issue date: |
04/12/2018 |
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From: |
Blake Purnell Plant Licensing Branch III |
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To: |
Gropp R Exelon Generation Co |
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References |
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L-2017-LLA-0237, MF9836, MF9837, MF9838, MF9839, MF9840, NMP1L3158, NMP1L3199 |
Download: ML18102A237 (6) |
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Category:E-Mail
MONTHYEARML24012A0492024-01-11011 January 2024 Request for Additional Information Regarding Final Response to Generic Letter 2004-02 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 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 ML23311A1682023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections (L-2023-LLR-0053 and L-2023-LLR-005 ML23311A1692023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Exam Categories B-B, B-D, and C-A SG Pressure Retaining Welds and Full Penetration Welded Nozzles (L-2023-LLR-0055 and L-2023-LLR-00 ML23312A1302023-11-0707 November 2023 Final Rci/Rai - Constellation R. E. Ginna Nuclear Power Plant - Exemption from Security Rule (EPID L-2023-LLE-0029) (Email) ML23304A0152023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Calvert Cliffs 1 & 2 - Exemption from Security Rule (L-2023-LLE-0033) 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 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) 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) ML23181A0732023-06-30030 June 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs TSTF-59A 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 ML23160A0222023-06-0606 June 2023 NRR E-mail Capture - Calvert Cliffs - Long Term Coupon Surveillance Program RAI ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined ML23156A0102023-06-0404 June 2023 NRR E-mail Capture - Calvert Cliffs - RAI License Amendment Request for Emergency Desiel Generator 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 ML23080A1002023-03-21021 March 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Repair Replacement of Saltwater System Buried Piping ML23080A0672023-03-21021 March 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Unit 1 - LAR to Modify the Long-Term Coupon Surveillance Program 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 ML23026A1332023-01-26026 January 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Deletion of License Condition for Decommissioning Trust LAR ML23019A3032023-01-19019 January 2023 Acceptance Review Determination License Amendment Requets to Adopt TSTF-505 ML23019A3092023-01-19019 January 2023 Acceptance Review Determination License Amendment Request to Adopt 10 CFR 50.69 Categorization Process 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 ML22325A0052022-11-18018 November 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-273-A, Revision 2 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 ML22339A0032022-09-28028 September 2022 R. E. Ginna Nuclear Power Plant - Ginna: Acceptance Review: to Revise Technical Specifications (TS) TS 5.6.5, Core Operating Limits Report ML22269A4522022-09-22022 September 2022 R. E. Ginna Nuclear Power Plant - Acceptance Review: to Revise Technical Specifications (TS) TS 5.6.5, Core Operating Limits Report (COLR) ML22255A0132022-09-0909 September 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood, Byron, Calvert Cliffs, Ginna - License Amendment Request to Adopt TSTF-577 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 2024-01-08
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML24012A0492024-01-11011 January 2024 Request for Additional Information Regarding Final Response to Generic Letter 2004-02 ML23312A1302023-11-0707 November 2023 Final Rci/Rai - Constellation R. E. Ginna Nuclear Power Plant - Exemption from Security Rule (EPID L-2023-LLE-0029) (Email) 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 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 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) ML23160A0222023-06-0606 June 2023 NRR E-mail Capture - Calvert Cliffs - Long Term Coupon Surveillance Program RAI ML23156A0102023-06-0404 June 2023 NRR E-mail Capture - Calvert Cliffs - RAI License Amendment Request for Emergency Desiel Generator 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 ML23012A2002023-01-13013 January 2023 Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 05000220/2023401 and 05000410/2023401 ML22207A2162022-07-26026 July 2022 Information Request to Support Triennial Baseline Design-Basis Capability of Power-Operated Valves Inspection; Inspection Report 05000220/2022010 and 05000410/2022010 ML22194A9412022-07-13013 July 2022 Request for Additional Information Relief Request CS-PR-02 (7/13/2022 e-mail) ML22179A2112022-06-28028 June 2022 Notification of Conduct of a Fire Protection Team Inspection ML22160A3962022-06-0909 June 2022 R. E. Ginna Nuclear Power Plant, LLC - Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000244/2022010 ML22129A0132022-05-0606 May 2022 NRR E-mail Capture - Draft RAIs for Requests for Alternatives I4R-17, I4R-23, ISI-05-018, I6R-10 ML22271A0772022-05-0606 May 2022 NRR E-mail Capture - Final RAIs 9.1.2021 Constellation Relief Request ML22091A0852022-04-0101 April 2022 NRR E-mail Capture - Braidwood and Byron - Final RAI Regarding Proposed Alternative for Various Pressurizer Welds (EPID L-2021-LLR-0035 and 0036) ML22091A2392022-04-0101 April 2022 NRR E-mail Capture - Calvert Cliffs - Formal RAI for Proposed Alternative for Examinations of Certain Pressurizer Welds 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 ML22020A0642022-01-13013 January 2022 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21320A3472021-11-16016 November 2021 Request for Additional Information LAR to Revise TSs to Adopt TSTF-582, Revision 0 ML21308A5592021-11-0404 November 2021 NRR E-mail Capture - NRC Request for Additional Information for Ginna Biennial EP Exercise Exemption Request ML21306A3312021-11-0202 November 2021 Request for Additional Information Alternative Request GV-RR-10 (11/2/2021 e-mail) ML21287A0322021-10-13013 October 2021 Request for Additional Information Re Proposed Alternative for Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds ML21287A0932021-10-0505 October 2021 Request for Additional Information: Calvert Cliffs 1 & 2 LAR to Revise Spent Fuel Pool Cooling - Shutdown Cooling Systems Licensing Basis (EPID L-2021-LLA-0112) (Email) ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21187A2232021-07-29029 July 2021 Temporary Instruction 2515/194 Inspection Documentation Request ML21189A1602021-07-0808 July 2021 NRR E-mail Capture - Request for Additional Information - Braidwood, Byron, and Ginna - Amendment to Address the Issues in Westinghouse NSALs ML21180A1562021-06-28028 June 2021 Request for Additional Information Regarding License Amendment Request Concerning Containment Sump ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21130A0382021-05-21021 May 2021 Memo to File - Draft Request for Additional Information Relief Request CISI-03-01 Concerning Containment Unbonded Post-Tensioning System Inservice Inspection Requirements ML21117A0342021-05-0505 May 2021 Request for Additional Information Regarding Proposed Alternative to Use ASME Code Case N-893 ML21125A1282021-05-0404 May 2021 OPC Document Request - Feb 2021 ML21119A1082021-04-27027 April 2021 Ti 2515/194 Inspection Documentation Request ML21110A5112021-04-20020 April 2021 Request for Additional Information Review of License Amendment Request to Revise Technical Specifications to Adopt TSTF-582 ML21088A2682021-03-30030 March 2021 Notification of Conduct of a Fire Protection Team Inspection ML21076A5152021-03-17017 March 2021 R. E. Ginna Nuclear Power Plant - RAI Steam Generator LAR to Revise Technical Specifications for Steam Generator Tube Inspection Frequency (EPID L-2020-LLA-0207) (e-mail) ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21053A3142021-02-22022 February 2021 Information Request for a Triennial Baseline Design Bases Assurance Inspection (Team); Inspection Report 05000317/2021010 and 05000318/2021010 ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21029A3302021-01-29029 January 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Fleet Alternative Request to Use ASME Code Case N-885 ML20365A0092020-12-30030 December 2020 Request for Additional Information Concerning Review of License Amendment Request and Relief Request to Change Excess Flow Check Valve Testing Frequency (EPIDs L-2020-LLA-0188 and L-2020-LLR-0114) ML20358A2602020-12-28028 December 2020 Changes to Draft Request for Additional Information Regarding License Amendment Request and Relief Request to Change Excess Flow Check Valve Testing Frequency ML20357A2232020-12-17017 December 2020 Update on Ginna POV - 3504A and 4562 (Email Request for Inspection Information) ML20275A0032020-09-30030 September 2020 Request for Additional Information Regarding Alternative Request Re Inservice Inspection Impracticality (L-2020-LLR-0089) ML20272A2802020-09-28028 September 2020 Withdrawal and Replacement of Request for Additional Information to Support Review of License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times ML20248H5192020-09-28028 September 2020 Changes to Draft Request for Additional Information Regarding Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times ML20246G6362020-09-0202 September 2020 Request for Additonal Information to Support Review of License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times NMP2L2739, Request for Additional Information for Nine Mile Point Nuclear Station, Unit 2, to Adopt TSTF-505, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b, Revision 22020-08-28028 August 2020 Request for Additional Information for Nine Mile Point Nuclear Station, Unit 2, to Adopt TSTF-505, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b, Revision 2 ML20239A7982020-08-25025 August 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2 2024-01-11
[Table view] |
Text
REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO REVISE EMERGENCY ACTION LEVEL SCHEMES CALVERT CLIFFS NUCLEAR POWER PLANT, UNITS 1 AND 2 CALVERT CLIFFS INDEPENDENT SPENT FUEL STORAGE INSTALLATION NINE MILE POINT NUCLEAR STATION, UNITS 1 AND 2 R. E. GINNA NUCLEAR POWER PLANT DOCKET NOS. 50-317, 50-318, 72-8, 50-220, 50-410, 72-1036, 50-244, and 72-67 By application dated May 31, 2017 (Agencywide Documents Access and Management System (ADAMS) Package Accession No. ML17164A149), as supplemented by letter dated January 31, 2018, (ADAMS Package Accession No. ML18037A653), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Calvert Cliffs Nuclear Power Plant (CCNPP), Units 1 and 2; Nine Mile Point Nuclear Station, Units 1 and 2 (NMP-1 and NMP-2, respectively); and R. E. Ginna Nuclear Power Plant (Ginna). The amendments would revise the emergency plans by changing the emergency action level (EAL) schemes for these facilities. The proposed changes are based on the Nuclear Energy Institute's (NEI's) guidance in NEI 99-01, Revision 6, "Development of Emergency Action Levels for Non-Passive Reactors" (henceforth referred to as NEI 99-01), which was endorsed by the U.S. Nuclear Regulatory Commission (NRC) by letter dated March 28, 2013 (ADAMS Accession No. ML12346A463).
The NRC has reviewed the application and determined that the information below is needed to complete its review. The numbering is continued from the previous request for additional information (RAI) issued on December 12, 2017 (ADAMS Accession No. ML17331B134).
RAI-28 (NMP-1)
In the January 31, 2018, letter Exelon provided a revised fission product barrier threshold CT5 for the drywell radiation monitor reading in NMP-1. The proposed potential loss threshold is "Drywell radiation reading > 1.1 E+04 R/hr (1100 R/hr)."
1 The two numerical expressions are not equivalent. Provide the correct value for the NMP-1 CT5 threshold.
RAI-29 (CCNPP, Ginna, NMP-1, and NMP-2)
For each facility, Exelon's proposed EALs MA5 and CA2 establish the alert threshold for a hazardous event affecting safety systems needed for the current operating mode. In its January 31, 2018, response to RAI-27, the licensee stated it revised EALs MA5 and CA2 for each facility based on the NRC staff's response to emergency plan frequently asked question (EPFAQ) 2016-002 (ADAMS Accession No. ML17195A299). For example, Exelon EAL MA5 is based on EPFAQ 2016-02 EAL SA9. The licensee states: "The wording has been modified from the NRC recommended language contained in EPFAQ 2016-002 to better clarify the intent
1 The units are roentgen per hour (R/hr). of EPFAQ 2016-002, and these would be considered as deviations from NEI 99-01, Revision 6 as discussed in EPFAQ 2016-002."
EPFAQ 2016-02 EALs SA9 and CA6 EPFAQ 2016-02 EAL SA9 and CA6 have similar wording, but apply to different operating modes. SA9 states, in part:
Notes: If the affected SAFETY SYSTEM train was already inoperable or out of service before the hazardous event occurred, then this emergency classification is not warranted.
If the hazardous event only resulted in VISIBLE DAMAGE, with no indications of degraded performance to at least one train of a SAFETY SYSTEM, then this emergency classification is not warranted.
(1) a. The occurrence of ANY of the following hazardous events: [bulleted list of hazardous events]
AND b. 1. Event damage has caused indications of degraded performance on one train of a SAFETY SYSTEM needed for the current operating mode.
AND
- 2. EITHER of the following: Event damage has caused indications of degraded performance to a second train of the SAFETY SYSTEM needed for the current operating mode, or Event damage has resulted in VISIBLE DAMAGE to the second train of a SAFETY SYSTEM needed for the current operating mode.
Exelon Proposed EALs MA5 and CA2 Exelon's proposed EALs MA5 and CA2 have similar wording, but apply to different operating modes. Exelon proposed EAL MA5 states, in part (emphasis added):
Notes: If the only affected SAFETY SYSTEM train was already inoperable or out of service before the hazardous event occurred, then this emergency classification is not warranted.
For SAFETY SYSTEMS with multiple trains if the hazardous event only resulted in VISIBLE DAMAGE or degraded performance to the one train, then this emergency classification is not warranted.
If it is determined that the conditions of MA5 are not met then assess the event via HU3, HU4, or HU6.
- 1. The occurrence of ANY of the following hazardous events: [bulleted list of hazardous events]
AND 2. a. Event damage has caused indications of degraded performance or VISIBLE DAMAGE to one train of a SAFETY SYSTEM required by Technical Specifications for the current operating mode.
AND
- b. ANY of the following for SAFETY SYSTEMS with multiple trains:
Event damage has caused indications of degraded performance to a second train of the SAFETY SYSTEM required by Technical Specifications for the current operating mode. OR Event damage has resulted in VISIBLE DAMAGE to a second train of the SAFETY SYSTEM required by Technical Specifications for the current operating mode. OR An additional train of the SAFETY SYSTEM is inoperable or out of service.
Discussion
Rather than clarify the intent of EPFAQ 2016-002, Exelon EALs MA5 and CA2 appear to be inconsistent with EPFAQ 2016-002. The text in bold above for Exelon EAL MA5 is significantly different than EPFAQ 2016-002 EAL SA9. This also appears to be the case for Exelon EAL CA2. The EPFAQ EALs result in an alert only when event damage has caused: (1) indications of degraded performance in one train needed for the current operating mode and (2) indications of degraded performance or visible damage to a second train needed for the current operating mode. Exelon's proposed EALs MA5 and CA2 appear to require an alert for other conditions.
EXAMPLE 1: A hazardous event causes only visible damage to two trains of a safety system needed for the current mode of operation. The EPFAQ EAL would not require an event declaration but Exelon's EAL MA5 or CA2 would result in an alert declaration.
EXAMPLE 2: A hazardous event caused indications of degraded performance in only one train while a second train was out of service. The EPFAQ EAL would not require an event declaration. The second note for Exelon EAL MA5 or CA2 suggests no event declaration is needed. However, the logic for Exelon's EALs (criteria 2.a and 3 rd bullet of Item 2.b) suggests an alert should be declared.
Request For Exelon EALs MA5 and CA2, provide justification to support the deviation from the guidance in NEI 99-01, Revision 6. Describe the difference between "SAFETY SYSTEM required by Technical Specifications for the current operating mode" and "SAFETY SYSTEM needed for the current operating mode." Explain how emergency directors will be able to accurately and consistently apply EALs MA5 and CA2.