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| | number = ML101330272 | | | number = ML101330272 |
| | issue date = 05/13/2010 | | | issue date = 05/13/2010 |
| | title = River Bend, Unit 1, Request for Additional Information Regarding 24 Month Cycle | | | title = Request for Additional Information Regarding 24 Month Cycle |
| | author name = Wang A B | | | author name = Wang A |
| | author affiliation = NRC/NRR/DORL/LPLIV | | | author affiliation = NRC/NRR/DORL/LPLIV |
| | addressee name = Burmeister B M, Lorfing C | | | addressee name = Burmeister B, Lorfing C |
| | addressee affiliation = Entergy Operations, Inc | | | addressee affiliation = Entergy Operations, Inc |
| | docket = 05000458 | | | docket = 05000458 |
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| =Text= | | =Text= |
| {{#Wiki_filter:From: Wang, Alan Sent: Thursday, May 13, 2010 9:48 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com) Cc: WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet | | {{#Wiki_filter:From: Wang, Alan Sent: Thursday, May 13, 2010 9:48 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com) |
| | Cc: WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet |
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| ==Subject:== | | ==Subject:== |
| River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872) | | River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872) |
| Barry and Dave, By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months. | | Barry and Dave, By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months. |
| The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov. This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as "18 months" by revising them to "24 months" in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values: | | The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov. |
| : 1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus. | | This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as 18 months by revising them to 24 months in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values: |
| : 2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values. | | : 1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus. |
| E-mail Properties Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6) | | : 2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values. |
| | E-mail Properties |
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| | Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6) |
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| ==Subject:== | | ==Subject:== |
| River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872) | | River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872) |
| | | Sent Date: 5/13/2010 9:51:32 AM Received Date: 5/13/2010 9:51:32 AM From: Wang, Alan Created By: Alan.Wang@nrc.gov Recipients: |
| Sent Date: 5/13/2010 9:51:32 AM Received Date: 5/13/2010 9:51:32 AM From: Wang, Alan | |
| | |
| Created By: Alan.Wang@nrc.gov | |
| | |
| Recipients: | |
| BBURMEI@entergy.com (BURMEISTER, BARRY M) | | BBURMEI@entergy.com (BURMEISTER, BARRY M) |
| Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com)) | | Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com)) |
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| Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan) | | Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan) |
| Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet) | | Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet) |
| Tracking Status: None | | Tracking Status: None Post Office: |
| | | HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 8587 5/13/2010 Options Expiration Date: |
| Post Office: | | Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received:}} |
| HQCLSTR02.nrc.gov | |
| | |
| Files Size Date & Time | |
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| MESSAGE 8587 5/13/2010 | |
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| Options Expiration Date: | |
| Priority: olImportanceNormal ReplyRequested: False Return Notification: False | |
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| Sensitivity: olNormal Recipients received:}} | |
Letter Sequence RAI |
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TAC:ME1872, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) |
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MONTHYEARML0926604942009-09-23023 September 2009 Acceptance Review Email, License Amendment Request, Modify Technical Specification Surveillance Requirement Frequencies from 18- to 24-Month Fuel Cycle Intervals Project stage: Acceptance Review RBG-46985, Unit 1, Supplement to License Amendment Request (LAR) LAR 2009-05, Dated August 10, 2009 Regarding 24-Month Fuel Cycles2009-12-0808 December 2009 Unit 1, Supplement to License Amendment Request (LAR) LAR 2009-05, Dated August 10, 2009 Regarding 24-Month Fuel Cycles Project stage: Supplement RBG-47021, Response to Request for Additional Information on License Amendment Request 2009-05, 24-Month Fuel Cycles2010-04-22022 April 2010 Response to Request for Additional Information on License Amendment Request 2009-05, 24-Month Fuel Cycles Project stage: Response to RAI ML1013302722010-05-13013 May 2010 Request for Additional Information Regarding 24 Month Cycle Project stage: RAI RBG-47043, Modification of License Amendment Request by Withdrawing the Proposed Changes Related to TS 3.3.8.1, Loss of Power Instrumentation.2010-06-16016 June 2010 Modification of License Amendment Request by Withdrawing the Proposed Changes Related to TS 3.3.8.1, Loss of Power Instrumentation. Project stage: Request ML1019300932010-07-12012 July 2010 E-mail, Bases Markups Related to License Amendment Request to Modify Technical Specification Surveillance Requirement Frequencies from 18- to 24-Month Fuel Cycle Intervals Project stage: Request ML1019301002010-07-12012 July 2010 Bases Markups Related to License Amendment Request to Modify Technical Specification Surveillance Requirement Frequencies from 18- to 24-Month Fuel Cycle Intervals Project stage: Request ML1023501552010-08-17017 August 2010 Response to Request for Additional Information on License Amendment Request 2009-05, 24-month Fuel Cycles Project stage: Response to RAI ML1023502662010-08-31031 August 2010 Issuance of Amendment No. 168, Modify Technical Specification Surveillance Requirement Frequencies from 18- to 24-Month Fuel Cycle Intervals Project stage: Approval ML13350A1612015-02-10010 February 2015 Correction to Safety Evaluation Related to Amendment No. 168 Which Modified Techical Specification Surveillance Requirement Frequencies from 18- to 24-Month Fuel Cycle Intervals; Enclosed New SE Section 3.1.7B Project stage: Approval 2010-06-16
[Table View] |
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Category:E-Mail
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Est Hours for Review of Relief Request (RR) - ASME Code RR Safety Eval with NRC-Approved Rev of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML21099A0312021-03-30030 March 2021 Email 3-30-2021 - Request for Information_ RBS EP Exercise Inspection (Week of 5_10_2021) ML21109A2132021-03-23023 March 2021 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Relief Request (RR) Associated with ASME Code RR Safety Evaluations with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML21068A4092021-03-0909 March 2021 NRR E-mail Capture - Entergy Fleet (GGNS and RBS) -Approval of TSTF-501 LAR, Relocate Sored Fuel Oil and Lube Oil Volume Values to Licensee Control ML21022A1692021-01-22022 January 2021 NRR E-mail Capture - Entergy Fleet (ANO, Grand Gulf, River Bend, and Waterford) - Acceptance Review for RR EN-20-RR-003, Proposed Alternative to Use ASME Code Case N-711-2 ML21015A3452021-01-14014 January 2021 NRR E-mail Capture - Grand Gulf and River Bend - Revised Estimated Hours for Relief Request Associated with ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20337A1382020-11-23023 November 2020 Acceptance of License Amendment Request to Adopt GL 86-10 Standard License Condition for Fire Protection ML20329A1442020-11-20020 November 2020 Terrapower QAPD Preliminary Questions Email ML20317A2922020-10-15015 October 2020 Entergy Operations, Inc. (River Bend Station, Unit 1) - Acceptance Review of License Amendment Request to Revise Technical Specifications to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements ML20289A3542020-10-14014 October 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of TSTF-563 LAR, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program ML20255A1892020-09-0909 September 2020 Email 09Sept2020 - RFI for RBS EP Exercise Inspection ML20260H4422020-09-0808 September 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Official RAIs for RR Associated with Updating ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20169A3782020-06-16016 June 2020 Email-20-0196-NRC Riv Response V. Dricks to Tom Gurdziel Inquiry: Extent of Condition Flex Equipment ML20169A6752020-05-20020 May 2020 Email-20-0196, Tom Gurdziel Inquiry to NRC Chairman Resource, Extent of Condition FLEX Equipment, 05/20/2020 ML20093C3072020-04-0101 April 2020 NRR E-mail Capture - (External_Sender) Entergy Fleet - Performance-Based Cyber Security Testing Plan Fee Waiver Response Letter (EPID P-2020-PRF-0000; CAC No. 001648) ML20086J6572020-03-26026 March 2020 NRR E-mail Capture - River Bend Station, Unit 1 -Acceptance Review of the LAR Associated with Extending the Implementation Date from 5/13/2020 to 9/30/2020 for Emergency Action Level Scheme ML20079D9302020-03-19019 March 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with Adopting TSTF-501, Relocate Stored Fuel Oil and Lube Oil Volumes to Licensee Control ML20057G1752020-02-24024 February 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with TSTF-566, Revise Actions for Inoperable RHR-Shutdown Cooling Subsystems ML20057G1592020-02-24024 February 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO ML20038A2092020-02-0404 February 2020 05000458 Request for Information IR2020-001 Occupational Radiation Safety ML19352F5222019-12-17017 December 2019 NRR E-mail Capture - Acceptance Review Results for License Amend Request to Revise TS 3.3.5.2 to Adopt TSTF-425, Rev 3, Relocate Surveillance Frequencies to Licensee Control - RITSTF Initiative 5b, for River Bend, ML19102A0722019-04-11011 April 2019 NRR E-mail Capture - River Bend Station, Unit 1 - Final Request for Additional Information Relief Request RBS-ISI-021 ML19095B7622019-04-0303 April 2019 Acceptance Review Results for License Amendment Request to Adopt TSTF-564, Revision 2, Safety Limit MCPR (Minimum Critical Power Ratio), for Grand Gulf Nuclear Station, Unit 1 and River Bend Station, Unit 1 (EPID L-22019-LLA-0051) ML19059A1782019-02-28028 February 2019 Acceptance Review Results for Relief Request No. EN-19-RR-1 to Use ASME Code Case N-831-1 for Entergy Fleet ML19059A0292019-02-27027 February 2019 NRR E-mail Capture - Acceptance Review Results for License Amendment Request to Adopt TSTF-529, Revision 4, Clarify Use and Application Rules, for Entergy Fleet ML19008A3592019-01-0808 January 2019 NRR E-mail Capture - Acceptance Review: RR Volumetric Exams (L-2018-LLR-0388) ML18365A1422018-12-28028 December 2018 NRR E-mail Capture - Acceptance Review Results - Removal of TS Table of Contents (L-2018-LLA-0489) ML18337A0052018-11-30030 November 2018 Acceptance Review Results: River Bend Station License Amendment Request New Spent Fuel Pool Criticality Analysis ML18337A3422018-11-14014 November 2018 Email from EPA Region 6 to David Drucker Nrr/Dmlr/Mrpb Acknowledging Receipt of Link to Generic Environmental Impact Statement for License Renewal of Nuclear Plants, Supplement 58, Regarding River Bend Station, Unit 1 ML18304A4612018-10-31031 October 2018 NRR E-mail Capture - Final RAI River Bend TSFTF-425 (L-2018-LLA-0056) 2024-05-16
[Table view] Category:Request for Additional Information (RAI)
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RFI for RBS EP Exercise Inspection ML20260H4422020-09-0808 September 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Official RAIs for RR Associated with Updating ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20162A1122020-06-10010 June 2020 Notification of Inspection (NRC Inspection Report 05000458/2020003) and Request for Information ML20126G3922020-05-0101 May 2020 Request for Information, May 01, 2020, River Bend Station Special Inspection, NRC Inspection Report 2020050 ML20038A2092020-02-0404 February 2020 05000458 Request for Information IR2020-001 Occupational Radiation Safety ML19102A0722019-04-11011 April 2019 NRR E-mail Capture - River Bend Station, Unit 1 - Final Request for Additional Information Relief Request RBS-ISI-021 ML18250A3112018-09-0404 September 2018 NRR E-mail Capture - Final RAI - RBS EAL Scheme Change LAR (L-2018-LLA-0130) ML18229A0082018-08-16016 August 2018 NRR E-mail Capture - Final Request for Additional Information for P-T Curves - NON-PROPRIETARY Version ML18250A3102018-08-0101 August 2018 NRR E-mail Capture - Draft RAI - RBS EP EAL Scheme Change LAR (L-2018-LLA-0130) ML18151A0822018-05-30030 May 2018 Summary of a Telephone Conference Call Held on May 21, 2018, Between NRC and Entergy Regarding the Need for Additional Information to Support the River Bend Station License Renewal Application RBG-47861, Response to License Renewal Application NRC Request for Additional Information Sets 14,15 and Operating Experience Review Clarification2018-05-29029 May 2018 Response to License Renewal Application NRC Request for Additional Information Sets 14,15 and Operating Experience Review Clarification ML18149A2882018-05-24024 May 2018 NRR E-mail Capture - River Bend Station Request for Additional Information - Reactor Core Isolation Cooling Piping Modification (L-2018-LLA-0029) ML18141A3172018-05-21021 May 2018 OE Draft RAI 3-0-5 Rogers ML18141A4882018-05-21021 May 2018 Draft Response (RAI 3.6.2.2.2.2-1a) from LRA Review Revised After the May 17, 2018 Call ML18131A2412018-05-11011 May 2018 RBS 012 Item 158a Response (RAI 3.2.2.3.2-1a) Revised - Received on 05/10/2018 ML18124A0092018-05-0303 May 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 15 ML18122A2312018-05-0202 May 2018 Draft Response to NRC Request for Additional Information (RAI) B.1.40-5 Service Water Integrity Generated from Staffs Review on the River Bend Station, Unit 1 License Renewal Application ML18122A1262018-05-0202 May 2018 RAI B.1.17-1 Revised - w- header-footer-watermark ML18121A3022018-05-0101 May 2018 Draft Response to NRC Request for Additional Information (RAI) 4.6-2a Generated from Staff'S Review on the River Bend License Renewal Application ML18121A0292018-04-30030 April 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 14 ML18115A1632018-04-25025 April 2018 Draft Response on RBS LRA RAI B.1.21-2 Flow Accelerated Corrosion ML18113A3322018-04-23023 April 2018 035 RB Buried Pipe 3rd Round RAI - Allik Holston ML18103A0152018-04-12012 April 2018 NRR E-mail Capture - Summary of Public Telephone Conference Call Held on March 27, 2018, Between the U.S. Nuclear Regulatory Commission and Entergy and Final Requests for Additional Information for the Safety Review of the River Bend Statio ML18073A0912018-03-14014 March 2018 NRC and Energy Public Meeting on Fatigue Analysis Related to River Bend License Renewal ML18068A1872018-03-0909 March 2018 Revision of Final Request for Additional Information (RAI 2.3.3.17-2) for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 RBG-47834, Response to License Renewal Application NRC Request for Additional Information (RAI) Set 92018-03-0808 March 2018 Response to License Renewal Application NRC Request for Additional Information (RAI) Set 9 ML18065A2132018-03-0606 March 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 12 ML18060A1532018-03-0101 March 2018 NRR E-mail Capture - River Bend Station: Request for Additional Information Concerning New Technical Specification for Control Building Air Conditioning (L-2017-LLA-0291) ML18058A0572018-02-23023 February 2018 Enclosurequest for Additional Information (Letter to J. Giddens Request for Additional Information Regarding Entergy Operations, Inc.'S Decommissioning Funding Plan Update) ML18043A3512018-02-12012 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 ML18043A0082018-02-0808 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 10 ML18038B4702018-02-0707 February 2018 NRR E-mail Capture - Fyi_River Bend Station RAIs Set 9 ML18022A9412018-01-22022 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 8 ML18011A0462018-01-10010 January 2018 Notification of Cyber Security Inspection (NRC Inspection Report 05000458/2018406) and Request for Information IR 05000458/20184062018-01-10010 January 2018 River Bend Station - Notification of Cyber Security Inspection (NRC Inspection Report 05000458/2018406) and Request for Information ML18009A9092018-01-0909 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 7 ML17361A3962017-12-27027 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 6 ML17347B4242017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 4 ML17347B4322017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 5 2023-07-24
[Table view] |
Text
From: Wang, Alan Sent: Thursday, May 13, 2010 9:48 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com)
Cc: WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet
Subject:
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)
Barry and Dave, By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months.
The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov.
This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as 18 months by revising them to 24 months in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values:
- 1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus.
- 2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values.
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Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6)
Subject:
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)
Sent Date: 5/13/2010 9:51:32 AM Received Date: 5/13/2010 9:51:32 AM From: Wang, Alan Created By: Alan.Wang@nrc.gov Recipients:
BBURMEI@entergy.com (BURMEISTER, BARRY M)
Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com))
Tracking Status: None DWILL21@entergy.com (WILLIAMSON, DANNY H)
Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)
Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 8587 5/13/2010 Options Expiration Date:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: