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| {{#Wiki_filter:1 NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO) | | {{#Wiki_filter:NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO) |
| Cc: CLARK, ROBERT W; PYLE, STEPHENIE L | | Cc: CLARK, ROBERT W; PYLE, STEPHENIE L |
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| |
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| ==Subject:== | | ==Subject:== |
| 3rd Round Request for Additional Info rmation - ANO-1 NFPA 805 LAR - TAC No. | | 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. |
| MF3419 Attachments: | | MF3419 Attachments: ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) |
| ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Managemen t System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), "Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants," 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). | | Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) |
| | Section 50.48(c). |
| | In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached. A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email. |
| | Sincerely, Andrea George Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081 1 |
|
| |
|
| In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached.
| | Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200) |
| A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email.
| |
| | |
| Sincerely, Andrea George
| |
| | |
| Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081
| |
| | |
| Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200) | |
|
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|
| ==Subject:== | | ==Subject:== |
| 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients: "CLARK, ROBERT W" <RCLARK@entergy.com> Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com> Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com> Tracking Status: None Post Office: Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date: Recipients Received: | | 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. |
| Enclosure REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDM ENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC. ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313
| | MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients: |
| | "CLARK, ROBERT W" <RCLARK@entergy.com> |
| | Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com> |
| | Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com> |
| | Tracking Status: None Post Office: |
| | Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date: |
| | Recipients Received: |
|
| |
|
| By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), | | REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC. |
| submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), "Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants," 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below. | | ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313 By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), |
| | submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below. |
| | In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional information (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e., |
| | a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, Potential for Loss of Remote Capability during a Control Room Fire (ADAMS Accession No. |
| | ML031200481), for several valves at ANO-1. Based on the licensees response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA. |
| | The NRC staff cannot conclude that spurious actuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition risk evaluations (i.e., less than the self-approval risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations. |
| | Enclosure |
|
| |
|
| In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional informat ion (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e., a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, "Potential for Loss of Remote Capability during a Control Room Fire" (ADAMS Accession No.
| | NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO) |
| ML031200481), for several valves at ANO-1. Based on the licensee's response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA.
| | Cc: CLARK, ROBERT W; PYLE, STEPHENIE L |
| The NRC staff cannot conclude that spurious ac tuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition
| |
| | |
| risk evaluations (i.e., less than the self-approv al risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations.
| |
| 1 NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO)
| |
| Cc: CLARK, ROBERT W; PYLE, STEPHENIE L | |
|
| |
|
| ==Subject:== | | ==Subject:== |
| 3rd Round Request for Additional Info rmation - ANO-1 NFPA 805 LAR - TAC No. | | 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. |
| MF3419 Attachments: | | MF3419 Attachments: ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) |
| ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Managemen t System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), "Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants," 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). | | Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) |
| | Section 50.48(c). |
| | In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached. A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email. |
| | Sincerely, Andrea George Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081 1 |
|
| |
|
| In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached.
| | Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200) |
| A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email.
| |
| | |
| Sincerely, Andrea George
| |
| | |
| Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081
| |
| | |
| Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200) | |
|
| |
|
| ==Subject:== | | ==Subject:== |
| 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients: "CLARK, ROBERT W" <RCLARK@entergy.com> Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com> Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com> Tracking Status: None Post Office: Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date: Recipients Received: | | 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. |
| Enclosure REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDM ENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC. ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313
| | MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients: |
| | | "CLARK, ROBERT W" <RCLARK@entergy.com> |
| By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee),
| | Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com> |
| submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), "Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants," 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below.
| | Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com> |
| | | Tracking Status: None Post Office: |
| In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional informat ion (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e., a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, "Potential for Loss of Remote Capability during a Control Room Fire" (ADAMS Accession No.
| | Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date: |
| ML031200481), for several valves at ANO-1. Based on the licensee's response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA.
| | Recipients Received: |
| The NRC staff cannot conclude that spurious ac tuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition
| |
|
| |
|
| risk evaluations (i.e., less than the self-approv al risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations.}} | | REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC. |
| | ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313 By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), |
| | submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below. |
| | In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional information (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e., |
| | a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, Potential for Loss of Remote Capability during a Control Room Fire (ADAMS Accession No. |
| | ML031200481), for several valves at ANO-1. Based on the licensees response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA. |
| | The NRC staff cannot conclude that spurious actuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition risk evaluations (i.e., less than the self-approval risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations. |
| | Enclosure}} |
Letter Sequence RAI |
|---|
|
|
MONTHYEARML14139A2702014-05-20020 May 2014
One. Unit 1 - Acceptance of Licensing Action, Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
Project stage: Acceptance Review
ML14139A2752014-05-30030 May 2014
One. Unit 1 - Online Reference Portal for License Amendment Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
Project stage: Other
ML15086A0492015-03-27027 March 2015
Regulatory Audit Plan for 4/20-23/15 Audit in Support of Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
Project stage: Other
ML15091A4312015-05-0505 May 2015
Request for Additional Information, Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
Project stage: RAI
ML15128A1782015-05-0808 May 2015
NRR E-mail Capture - Corrections to ANO-1 NFPA 805 Requests for Additional Information - TAC No MF3419
Project stage: RAI
1CAN061501, 60-Day Response to Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-8052015-06-16016 June 2015
60-Day Response to Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-805
Project stage: Response to RAI
ML15225A2542015-08-14014 August 2015
Summary of 4/20-23/2015 Audit in Support of Request to Adopt National Fire Protection Association NFPA 805, Performance-Based Standard for Fire Protection for LWR Generating Plants (2001 Edition)
Project stage: Other
ML15251A2202015-09-0808 September 2015
NRR E-mail Capture - 2nd Round Requests for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419
Project stage: RAI
ML15280A1142015-10-0606 October 2015
NRR E-mail Capture - Second Round Follow-up Requests for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419 (Formal Transmittal)
Project stage: RAI
1CAN111501, Second Set of Round 2 Responses to Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-8052015-11-0404 November 2015
Second Set of Round 2 Responses to Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-805
Project stage: Response to RAI
1CAN111502, Clarification of Response to Round 2 Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-8052015-11-17017 November 2015
Clarification of Response to Round 2 Request for Additional Information Adoption of National Fire Protection Association Standard NFPA-805
Project stage: Request
ML16012A0492016-01-12012 January 2016
NRR E-mail Capture - 3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419
Project stage: RAI
ML16070A1312016-03-10010 March 2016
NRR E-mail Capture - 4th Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No. MF3419
Project stage: RAI
2015-05-05
[Table View] |
|
|---|
Category:E-Mail
MONTHYEARML24218A0652024-08-0202 August 2024
NRR E-mail Capture - LIC-109 Acceptance Review - Arkansas Nuclear One, Unit 1 - License Amendment Request - Request for Review and Approval Changes to SAR and to a Confirmatory Order - Pzr Htr Emergency Power Supply - EPID L-2024-LLA-0092
ML24180A0022024-06-26026 June 2024
NRR E-mail Capture - LIC-109 Acceptance - ANO 1 and 2 - Proposed Alternatives for Examinations of SG Pressure Retaining Welds and Full Penetrations Nozzles - EPID L-2024-LLR-0038
ML24117A0262024-04-26026 April 2024
NRR E-mail Capture - ANO Unit 2 - Acceptance of Requested Licensing Action License Amendment Request to Revise Typographical Errors in Technical Specifications
ML24088A0082024-03-27027 March 2024
NRR E-mail Capture - ANO-2 -- TSTF-505 Post-Audit Final RAI (L-2023-LLA-0052)
ML23269A0232023-09-22022 September 2023
NRR E-mail Capture - Arkansas Nuclear One, Unit 2 - TSTF-505 Audit Questions
ML23240A3412023-08-28028 August 2023
NRR E-mail Capture - ANO-2, Grand Gulf, and River Bend - Acceptance Review of LAR Revising TSs to Adopt TSTF-205, Revision of Channel Calibration, Channel Functional Test, and Related Definitions
ML23194A1752023-07-13013 July 2023
NRR E-mail Capture - ANO-1 - Acceptance Review of Alternative Request ANO1-ISI-037
ML23187A0432023-07-0303 July 2023
NRR E-mail Capture - Arkansas Nuclear One, Unit 1 - TSTF-505 Audit Agenda
ML23166A0132023-06-14014 June 2023
NRR E-mail Capture - Arkansas Nuclear One, Unit 1 - TSTF-505 Audit Questions
ML23130A2752023-05-10010 May 2023
NRR E-mail Capture - ANO Unit 2- Acceptance of Requested Licensing Action LAR to Adopt TSTF-505 Revision 2
ML23118A0692023-04-28028 April 2023
NRR E-mail Capture - ANO Unit 1 - Acceptance of Requested Licensing Action LAR to Modify ANO-1 TS 3.3.1, Reactor Protection System Instrumentation (L-2023-LLA-0048)
ML23104A1052023-03-10010 March 2023
NRR E-mail Capture - ANO-2 Final RAI Alternative Request for Life-of-Repair of RVCH Pen. 46
ML23072A3672023-03-0909 March 2023
NRR E-mail Capture - Entergy Fleet - Acceptance Review of Quality Assurance Program Manual Reduction in Commitment
ML23039A0872023-02-0808 February 2023
NRR E-mail Capture - Arkansas Nuclear One, Unit 2 - Acceptance Review of Relief Request ANO2-RR-23-001, Half-Nozzle Repair of RVCH Penetration 46 (L-2023-LLR-0000)
ML23026A1322023-01-26026 January 2023
NRR E-mail Capture - ANO Unit 1 - Acceptance of Requested Licensing Action LAR to Adopt TSTF-505 Revision 2
ML22354A0122022-12-19019 December 2022
NRR E-mail Capture - ANO-1 and ANO-2 - Acceptance Review of Request for Alternative ANO-CISI-002 Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (L-2022-LLR-0080)
ML22349A0112022-12-14014 December 2022
NRR E-mail Capture - Final RAI Relief Request ANO1-ISI-035
ML22341A1202022-12-0707 December 2022
NRR E-mail Capture - ANO Unit 1 - Acceptance of Requested Licensing Action LAR to to Remove Technical Specification Condition Allowing Two Reactor Coolant Pump Operation (L-2022-LLA-0161)
ML22273A0982022-09-30030 September 2022
NRR E-mail Capture - ANO Units 1 and 2 - Acceptance of Requested Licensing Action Emergency Plan Staffing Requirements
ML22265A2012022-09-22022 September 2022
NRR E-mail Capture - ANO-1 - Acceptance Review of Relief Request ANO1-ISI-036
ML22188A1782022-07-0707 July 2022
NRR E-mail Capture - ANO-1 - Acceptance Review of Relief Request ANO1-ISI-035
ML22174A1362022-06-23023 June 2022
NRR E-mail Capture - ANO-2 Final RAI Relief Requests ANO2-ISI-023 Through -028 (EPIDs L-2022-LLR-0022 Through -0027)
ML22151A3262022-05-31031 May 2022
August 2022 Emergency Preparedness Exercise Inspection - Request for Information
ML22124A2452022-05-0404 May 2022
NRR E-mail Capture - ANO-1 and ANO-2 - Final RAI 2 License Amendment Requests to Implement Provisions of 10 CFR 50.69 (L-2021-LLA-0105/-0106)
ML22108A1642022-04-18018 April 2022
NRR E-mail Capture - ANO-1: Final RAI License Amendment Request Concerning TS Changes Due to Revised Dose Calculations (L-2021-LLA-0181)
ML22081A3902022-03-22022 March 2022
NRR E-mail Capture - ANO-2 - Acceptance Review of Relief Requests ANO2-ISI-023, -024, -025, -026, -027, and -028 (Epids: L-2022-LLR-022, -023, -024, -025, -026, and -027)
ML22034A5482022-02-0303 February 2022
NRR E-mail Capture - Final RAI License Amendment Requests to Implement Provisions of 10 CFR 50.69 (L-2021-LLA-0105/-0106)
ML22020A0822022-01-19019 January 2022
NRR E-mail Capture - ANO-1 and 2 - Final RAI 2 License Amendment Requests to Allow the ECP to Remain Operable on a One-Time Basis for Up to 65 Days to Perform Piping Upgrade (L-2021-LLA-0015)
ML22020A0742022-01-13013 January 2022
NRR E-mail Capture - ANO Unit 2 - Acceptance of Requested Licensing Action Alternative ANO2-PT-003
ML21314A1212021-11-0909 November 2021
Verbal Authorization of Relief Request ANO2-RR-21-002
ML21312A4792021-11-0505 November 2021
Email: NRC Staff Preliminary Questions Regarding X Energy LLC Xe-100 Topical Report: Risk-Informed Performance-Based Licensing Basis Development
ML21312A0382021-11-0505 November 2021
NRR E-mail Capture - ANO-2 RAI Relief Request ANO2-RR-21-002
ML21308A5602021-11-0404 November 2021
NRR E-mail Capture - Arkansas Nuclear One, Units 1 and 2, Grand Gulf, River Bend, and Waterford, Unit 3 - Acceptance Review of LAR to Adopt TSTF-554, Revise Reactor Coolant Leakage Requirements
ML21292A0112021-10-18018 October 2021
NRR E-mail Capture - ANO, 1 and 2, Grand Gulf, River Bend, Waterford, 3 - Acceptance Review of LAR to Adopt TSTF-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position
ML21287A1692021-10-13013 October 2021
Record of 10-13-21 Verbal Authorization of ANO2-R&R-012 (L-2021-LLR-0082)
ML21298A1562021-10-11011 October 2021
NRR E-mail Capture - ANO-2 Final RAI Relief Request ANO2-R&R-012 Concerning Rv Closure Head Penetration 46
ML21273A0672021-09-29029 September 2021
NRR E-mail Capture - ANO-2 Final RAI 2 License Amendment Request to Adopt a Safety Function Determination Program
ML21238A3742021-08-23023 August 2021
RFI Email - Cyber PI&R Inspection (ANO)
ML21252A0052021-08-20020 August 2021
NRR E-mail Capture - ANO-1 and 2 Final RAI License Amendment Request to Allow the ECP to Remain Operable on a One-Time Basis for Up to 65 Days to Perform Piping Upgrade (L-2021-LLA-0015)
ML21217A3302021-08-0505 August 2021
(ANO) Problem Identification and Resolution (PIR) Request for Information Combined
ML21202A1662021-07-20020 July 2021
NRR E-mail Capture - ANO Unit 2 - Acceptance of Requested Licensing Action Alternative ANO2-PT-003
ML21201A0062021-07-19019 July 2021
NRR E-mail Capture - Arkansas Nuclear One, Units 1 and 2, and Waterford, Unit 3 - Acceptance Review of LAR to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
ML21197A0372021-07-16016 July 2021
NRR E-mail Capture - ANO-1 and 2 - Final RAI Final Response to GL 2004-02
ML21179A0042021-06-25025 June 2021
NRR E-mail Capture - ANO Unit 1 - Acceptance of Requested Licensing Action License Amendment Request to Adopt 10 CFR 50.69
ML21179A0052021-06-25025 June 2021
NRR E-mail Capture - ANO Unit 2 - Acceptance of Requested Licensing Action License Amendment Request to Adopt 10 CFR 50.69
ML21174A0342021-06-22022 June 2021
NRR E-mail Capture - Entergy Fleet (ANO, Ggulf, Rbend, & Waterford) - Acceptance Review for Relief Request to Use a Provision of a Later Edition of the ASME Code, Section XI for Periodic System Pressure Tests Exemptions
ML21116A1092021-04-26026 April 2021
NRR E-mail Capture - ANO-1 and ANO-2: Final Supplemental RAI Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of ECP Supply Piping
ML21105A0122021-04-0909 April 2021
NRR E-mail Capture - ANO-2 Final RAI License Amendment Request to Adopt a Safety Function Determination Program
ML21074A2552021-03-15015 March 2021
NRR E-mail Capture - ANO-1 and ANO-2 - Acceptance of Requested Licensing Action LAR for One-Time Change to Support Upgrade of the ECP Supply Piping
ML21071A2172021-03-10010 March 2021
NRR E-mail Capture - ANO-1 and ANO-2 - Final RAI Proposed Change to Quality Assurance Program Manual
2024-08-02
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24143A0632024-05-22022 May 2024
Notification of Inspection (NRC Inspection Report 05000368/2024003) and Request for Information
ML24107A0282024-04-17017 April 2024
Notification of Comprehensive Engineering Team Inspection (05000313/2024011 and 05000368/2024011) and Request for Information
ML24088A0082024-03-27027 March 2024
NRR E-mail Capture - ANO-2 -- TSTF-505 Post-Audit Final RAI (L-2023-LLA-0052)
ML23130A2972023-05-17017 May 2023
Notification of Inspection (NRC Inspection Report 05000313/2023003) and Request for Information
ML23104A1052023-03-10010 March 2023
NRR E-mail Capture - ANO-2 Final RAI Alternative Request for Life-of-Repair of RVCH Pen. 46
ML23019A0672023-01-19019 January 2023
Inservice Inspection Request for Information
ML22349A0112022-12-14014 December 2022
NRR E-mail Capture - Final RAI Relief Request ANO1-ISI-035
ML22213A1662022-08-0101 August 2022
Information Request, Security IR 2022401
ML22208A0542022-07-26026 July 2022
Request for Information
ML22174A1362022-06-23023 June 2022
NRR E-mail Capture - ANO-2 Final RAI Relief Requests ANO2-ISI-023 Through -028 (EPIDs L-2022-LLR-0022 Through -0027)
ML22159A3242022-06-0909 June 2022
Notification of NRC Triennial Heat Exchanger/Sink Performance Inspection (05000313/2022003 and 05000368/2022003) and Request for Information
ML22151A3262022-05-31031 May 2022
August 2022 Emergency Preparedness Exercise Inspection - Request for Information
ML22124A2452022-05-0404 May 2022
NRR E-mail Capture - ANO-1 and ANO-2 - Final RAI 2 License Amendment Requests to Implement Provisions of 10 CFR 50.69 (L-2021-LLA-0105/-0106)
ML22122A2952022-05-0404 May 2022
Notification of Inspection NRC Inspection Report 05000368/2022003 and Request for Information
ML22108A1642022-04-18018 April 2022
NRR E-mail Capture - ANO-1: Final RAI License Amendment Request Concerning TS Changes Due to Revised Dose Calculations (L-2021-LLA-0181)
ML22034A5482022-02-0303 February 2022
NRR E-mail Capture - Final RAI License Amendment Requests to Implement Provisions of 10 CFR 50.69 (L-2021-LLA-0105/-0106)
ML22020A0822022-01-19019 January 2022
NRR E-mail Capture - ANO-1 and 2 - Final RAI 2 License Amendment Requests to Allow the ECP to Remain Operable on a One-Time Basis for Up to 65 Days to Perform Piping Upgrade (L-2021-LLA-0015)
ML21312A0382021-11-0505 November 2021
NRR E-mail Capture - ANO-2 RAI Relief Request ANO2-RR-21-002
ML21286A7132021-10-15015 October 2021
ANO2022010 Tfp RFI Stg, Arkansas Nuclear One, Units 1 and 2 - Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000313/2022010 and 05000368/2022010) and Request for Information
ML21273A0672021-09-29029 September 2021
NRR E-mail Capture - ANO-2 Final RAI 2 License Amendment Request to Adopt a Safety Function Determination Program
ML21236A3222021-09-19019 September 2021
Request for Information
ML21252A0052021-08-20020 August 2021
NRR E-mail Capture - ANO-1 and 2 Final RAI License Amendment Request to Allow the ECP to Remain Operable on a One-Time Basis for Up to 65 Days to Perform Piping Upgrade (L-2021-LLA-0015)
ML21217A3302021-08-0505 August 2021
(ANO) Problem Identification and Resolution (PIR) Request for Information Combined
ML21204A0842021-07-28028 July 2021
ANO Phase 4 2021013 RFI Gap
ML21197A0372021-07-16016 July 2021
NRR E-mail Capture - ANO-1 and 2 - Final RAI Final Response to GL 2004-02
0CAN042105, Supplement to Response to Request for Additional Information Reduction of Commitment to the Entergy Operation'S Quality Assurance Program Manual Description2021-04-30030 April 2021
Supplement to Response to Request for Additional Information Reduction of Commitment to the Entergy Operation'S Quality Assurance Program Manual Description
ML21116A1092021-04-26026 April 2021
NRR E-mail Capture - ANO-1 and ANO-2: Final Supplemental RAI Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of ECP Supply Piping
ML21105A0122021-04-0909 April 2021
NRR E-mail Capture - ANO-2 Final RAI License Amendment Request to Adopt a Safety Function Determination Program
ML21071A2172021-03-10010 March 2021
NRR E-mail Capture - ANO-1 and ANO-2 - Final RAI Proposed Change to Quality Assurance Program Manual
ML21026A2682021-01-26026 January 2021
Request for Information
ML21022A0842021-01-22022 January 2021
Request for Additional Information - Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of Emergency Cooling Pond Supply Piping - Arkansas Nuclear One,Units 1 and 2 -Entergy Operations, Inc. NON-PROPRIETARY Redacted
ML21019A5142021-01-14014 January 2021
March 2021 Emergency Preparedness Exercise Inspection - Request for Information
ML20324A6412020-11-19019 November 2020
NRR E-mail Capture - ANO-1 - Final RAI Relief Request ANO1-ISI-034
ML20316A0102020-11-0202 November 2020
NRR E-mail Capture - ANO-1 and ANO-2 - Final RAI Concerning Relief Request EN-20-RR-01
ML20262H0752020-09-17017 September 2020
NRR E-mail Capture - ANO-2 Final RAI 2 License Amendment Request Concerning Proposed Technical Specification Additions, Deletions, and Relocations
ML20260H4762020-09-0909 September 2020
NRR E-mail Capture - ANO-1 Final RAI License Amendment Request to Revise Lov Relay Allowable Values
ML20154K7622020-06-0101 June 2020
NRR E-mail Capture - ANO-2 Final RAI License Amendment Request Concerning Proposed Technical Specification Additions, Deletions, and Relocations
ML20119A0982020-04-28028 April 2020
Notification of Inspection (NRC Inspection Report 05000368/2020003 and Request for Information
ML20106E8522020-04-13013 April 2020
Information Request, NRC Inspection Report 05000313/2020410 and 05000368/2020410
ML20065H7992020-03-0606 March 2020
Supplemental Information Needed for Acceptance of Requested Licensing Action License Amendment Request to Revise Loss of Voltage Relay Allowable Values
ML20055E9092020-02-24024 February 2020
NRR E-mail Capture - ANO-2 Final RAI License Amendment Request to Revise Control Element Assembly Drop Time
ML20036D3092020-02-0505 February 2020
NRR E-mail Capture - ANO-2 - Final RAI Alternative Request VRR-ANO2-2019-1
ML20013C7472020-01-10010 January 2020
NRR E-mail Capture - ANO-1 and 2 -- Final RAI #2 LAR to Incorporate Tornado Missile Risk Evaluator (TMRE) Into Licensing Basis
ML19316A0242019-11-0707 November 2019
NRR E-mail Capture - ANO-1 - - Final RAI Concerning Relief Request ANO1-ISI-033 (L-2019-LLR-0100)
ML19280A0402019-10-0707 October 2019
NRR E-mail Capture - ANO-1 and 2 - Final RAI #1 License Amendment Request to Incorporate Tornado Missile Risk Evaluator (TMRE) Into Licensing Basis
ML19339F5902019-09-23023 September 2019
Request for Information: Arkansas Nuclear One, IR 05000313/2019-004 Occupational Radiation Safety Inspection
ML19281E0032019-08-0505 August 2019
ANO 2019 PIR Request for Information
ML19203A0122019-07-16016 July 2019
Request for Information - Inservice Inspection Activities (NRC Inspection Report 05000313/2019004)
ML19106A4322019-04-16016 April 2019
NRR E-mail Capture - ANO-2 Final RAI Re LAR to Add TS Actions to Address Inoperability of the Containment Building Sump
ML19058A8332019-02-27027 February 2019
NRR E-mail Capture - ANO-1 - Final RAI Relief Request ANO1-ISI-032
2024-05-22
[Table view] |
Text
NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO)
Cc: CLARK, ROBERT W; PYLE, STEPHENIE L
Subject:
3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No.
MF3419 Attachments: ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR)
Section 50.48(c).
In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached. A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email.
Sincerely, Andrea George Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081 1
Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200)
Subject:
3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No.
MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients:
"CLARK, ROBERT W" <RCLARK@entergy.com>
Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com>
Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC.
ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313 By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee),
submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below.
In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional information (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e.,
a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, Potential for Loss of Remote Capability during a Control Room Fire (ADAMS Accession No.
ML031200481), for several valves at ANO-1. Based on the licensees response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA.
The NRC staff cannot conclude that spurious actuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition risk evaluations (i.e., less than the self-approval risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations.
Enclosure
NRR-PMDAPEm Resource From: George, Andrea Sent: Tuesday, January 12, 2016 7:33 AM To: BICE, DAVID B (ANO)
Cc: CLARK, ROBERT W; PYLE, STEPHENIE L
Subject:
3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No.
MF3419 Attachments: ANO-1 SSA 11-01 RAI response clarification.docx Mr. Bice, By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee), submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO 1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR)
Section 50.48(c).
In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation. Please treat this email as formal transmittal of the third round RAI which is attached. A clarification call was held with your staff on January 6, 2016, during which it was agreed that a response would be provided by January 20, 2016. If there are difficulties in meeting this date, please call or email.
Sincerely, Andrea George Project Manager Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission 301-415-1081 1
Hearing Identifier: NRR_PMDA Email Number: 2588 Mail Envelope Properties (Andrea.George@nrc.gov20160112073200)
Subject:
3rd Round Request for Additional Information - ANO-1 NFPA 805 LAR - TAC No.
MF3419 Sent Date: 1/12/2016 7:32:58 AM Received Date: 1/12/2016 7:32:00 AM From: George, Andrea Created By: Andrea.George@nrc.gov Recipients:
"CLARK, ROBERT W" <RCLARK@entergy.com>
Tracking Status: None "PYLE, STEPHENIE L" <SPYLE@entergy.com>
Tracking Status: None "BICE, DAVID B (ANO)" <DBICE@entergy.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1490 1/12/2016 7:32:00 AM ANO-1 SSA 11-01 RAI response clarification.docx 28785 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS ENTERGY OPERATIONS, INC.
ARKANSAS NUCLEAR ONE, UNIT 1 DOCKET NO. 50-313 By letter dated January 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14029A438), as supplemented by letters dated May 19, June 16, July 21, August 12, September 22, November 4, and November 17, 2015 (ADAMS Accession Nos. ML15139A196, ML15167A503, ML15203A205, ML15224A729, ML15265A113, ML15308A452, and ML15321A076, respectively), Entergy Operations, Inc. (the licensee),
submitted a license amendment request (LAR) to change the Arkansas Nuclear One, Unit 1 (ANO-1), fire protection program to one based on the National Fire Protection Association Standard 805 (NFPA 805), Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, 2001 Edition, as incorporated into Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(c). In the course of its review, the U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required in order to complete its evaluation, as detailed below.
In its letter dated November 4, 2015, the license submitted a response to Safe Shutdown Analysis (SSA) request for additional information (RAI) 11.01. Specifically, the licensee provided an extensive qualitative explanation concluding that installation of an inhibit circuit (i.e.,
a shorting switch) addresses the circuit failure modes identified in Information Notice (IN) 92-18, Potential for Loss of Remote Capability during a Control Room Fire (ADAMS Accession No.
ML031200481), for several valves at ANO-1. Based on the licensees response to SSA RAI 11.01, it appears that these shorting switches are credited with precluding spurious actuations of the IN 92-18 valves, and so fire-induced damage on DC control circuits located in the vicinity of cables having fusing greater than 10 amps of the inhibit circuits is not modeled in the Fire PRA.
The NRC staff cannot conclude that spurious actuations can be precluded without additional information. As an alternative to concluding that spurious actuation is precluded, spurious actuation need not be modelled if the risk is insignificant for both transition and post-transition risk evaluations (i.e., less than the self-approval risk guidelines); however, the NRC staff cannot reach this conclusion with the limited risk information provided by the licensee. Please provide a sensitivity study demonstrating that the risk impact of failing the protected valves is insignificant, or that the risk of the excluded scenarios in which a fire causes a spurious actuation and the inhibit switch fails is insignificant with regard to the plant change evaluations.
Enclosure
