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| {{#Wiki_filter:2010OverviewAmeren MissouriCallaway Plant Class 1E Electrical Equipment Air-Conditioning System August 2012 2AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010: Class 1E Electrical Equipment A/C 3AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/CClass 1E Electrical Equipment A/C trains (SGK05A/B) support DC Sources, Inverters, and Distribution SystemsCurrently governed by FSAR Section 16.7.13 (Callaway's TRM equivalent)LAR will discuss the following areas of need as well as industry interest:TS 1.1 Definition of OPERABLE-OPERABILITYApplication of LCO 3.0.6Single failure criterionRoom temperature rise analysisRecent Industry LERs and License Amendment Precedents 4AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/CDefinition of OPERABLE-OPERABILITY:"A system, subsystem, train, component, or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified safety function(s) and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its specified safety function(s) are also capable of performing their related support function(s)." [emphasis added] The DC sources, inverters, and distribution systems supported by SGK05A/B have their own TS 3.8 LCOs. | | {{#Wiki_filter:Overview Ameren Missouri Callaway Plant Class 1E Electrical Equipment Air-Conditioning System August 2010 2012 |
| The SGK05A/B trains do notcurrently have their own TS LCO, nor are they discussed in the TS 3.8 Specifications or Bases. | | |
| 5When a supported system LCO is not met solely due to an inoperable support system, LCO 3.0.6 allows the inoperability to be addressed only within the support system LCO if the support system has a TS LCO.LCO 3.0.6 cannot be applied to non-TS support systems. Given the requirements of TS 3.8.7 (covering only one inoperable inverter), Callaway currently enters LCO 3.0.3 for one inoperable train of Class 1E electrical equipment A/C until room doors are opened.Similarly, the rules of usage for TS Conditions stipulate that a single failure need not be postulated when operating with an inoperability covered by a TS Condition entry.The single failure provision does not apply to non-TS LCOs. AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 6ESF Switchgear RoomsAMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 7AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/CDC Switchgear and Battery Rooms 8Proposed resolution is to add new TS LCO 3.7.20.Conditions and Required Actions to be structured similarly to TS 3.7.10 (Control Room Emergency Ventilation System) and TS 3.7.11 (Control Room Air Conditioning System) with respect to Applicability and corresponding actions.With one train (SGK05A or SGK05B) inoperable, recurring Required Action to verify room temperatures are within limits.Directed cascade Note to enter LCO 3.8.4, 3.8.7, or 3.8.9 if room temperatures are not within limits. The limits will be based on manufacturer design/purchase specification requirements, EQ test results, and the EQ discussions in FSAR Sections 3.11(B).2.3 and 3.11(B).5.7 on control building electrical equipment and mild environments.7-day A/C train restoration Completion Time (much less than 30-day CT for CRACS in TS 3.7.11).AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 9GOTHIC 7.2(b) room temperature rise calculation for various door opening times and HVAC air delivery temperatures. Updated since 11/3/11 LAR to reflect current design heat loads and HVAC parameters. Final update prior to submittal.This is notaloss of safety function issue. Opening room doors will allow the operable Class 1E electrical equipment A/C train to serve both trains of supported electrical equipment.HVAC design temperature for delivered air flow is 60F. Calculation assumes a conservative initial temperature for all air and concrete. Additional equipment modeling still ongoing.Room temperatures will stay below values that would challenge equipment operability for 30-day ESFAS loading if compensatory measures are implemented (e.g., opening room doors). Specified safety functions will be accomplished. AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 10New structure of proposed TS 3.7.20 Condition A will address several NRC concerns on the 11/3/11 LAR. The rest of new TS 3.7.20 will remain the same.Instead of specifying Required Actions to implement mitigating measures within 8 hours, the revised Condition A will specify Required Action A.1 to periodically verify room temperatures are within limits.The room temperature limits will be located in FSAR Table 16.7-2 (consistent with their relocation under Callaway License Amendment 103 dated 10/20/95). The verification is accelerated from once per 12 hours under normal plant operation.Prior to LA103 the Area Temperature Monitoring specification allowed a room to exceed the listed temperature limit by up to 30F for 8 hours while invoking a Special Report. If the limit was exceeded by more than 30F, room temperature had to be restored within 4 hours otherwise affected equipment was declared inoperable.AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 11Callaway LER 2010-010-00 (ULNRC-05760 dated 3-31-11). LAR dated 11/3/11 withdrawn on 4/30/12.We are aware of at least 3 other utilities that have filed LERs in 2012 and one other utility that has withdrawn an amendment request this year.AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 12Precedents include:Joseph M. Farley Nuclear Plant Amendment 176/169 dated June 27, 2008: The NRC approved a non-STS LCO 3.7.19 entitled "Engineered Safety Feature (ESF) Room Coolers." The NRC Safety Evaluation cited VogtleElectric Generating Plant TS 3.7.14, "Engineered Safety Features (ESF) Room Cooler and Safety Related Chiller System."Kewaunee Power Station ITS Conversion Amendment 207 dated February 2, 2011: The NRC approved non-STS ACTIONS Notes in TSs 3.8.4, 3.8.7, and 3.8.9 that allow a 24-hour delay time prior to ACTION entry when the supported electrical equipment is inoperable solely due to non-functional room cooling.TSTF-477-A Revision 3, "Add Actions for Two Inoperable Control Room AC Subsystems," which revised the BWR STS to allow all control room A/C to be lost for 72 hours as long as temperature was verified to be within limits every 4 hours. Approved for Hope Creek in Amendment 191 dated February 8, 2012.AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C 13AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010: Class 1E Electrical Equipment A/CQuestions?}}
| | AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010: |
| | Class 1E Electrical Equipment A/C 2 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Class 1E Electrical Equipment A/C trains (SGK05A/B) support DC Sources, Inverters, and Distribution Systems Currently governed by FSAR Section 16.7.13 (Callaways TRM equivalent) |
| | LAR will discuss the following areas of need as well as industry interest: |
| | TS 1.1 Definition of OPERABLE-OPERABILITY Application of LCO 3.0.6 Single failure criterion Room temperature rise analysis Recent Industry LERs and License Amendment Precedents 3 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Definition of "A system, subsystem, train, component, or device OPERABLE- shall be OPERABLE or have OPERABILITY when it OPERABILITY: is capable of performing its specified safety function(s) and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its specified safety function(s) are also capable of performing their related support function(s). [emphasis added] |
| | The DC sources, inverters, and distribution systems supported by SGK05A/B have their own TS 3.8 LCOs. |
| | The SGK05A/B trains do not currently have their own TS LCO, nor are they discussed in the TS 3.8 Specifications or Bases. |
| | 4 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C When a supported system LCO is not met solely due to an inoperable support system, LCO 3.0.6 allows the inoperability to be addressed only within the support system LCO if the support system has a TS LCO. |
| | LCO 3.0.6 cannot be applied to non-TS support systems. Given the requirements of TS 3.8.7 (covering only one inoperable inverter), Callaway currently enters LCO 3.0.3 for one inoperable train of Class 1E electrical equipment A/C until room doors are opened. |
| | Similarly, the rules of usage for TS Conditions stipulate that a single failure need not be postulated when operating with an inoperability covered by a TS Condition entry. |
| | The single failure provision does not apply to non-TS LCOs. |
| | 5 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C ESF Switchgear Rooms 6 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C DC Switchgear and Battery Rooms 7 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Proposed resolution is to add new TS LCO 3.7.20. |
| | Conditions and Required Actions to be structured similarly to TS 3.7.10 (Control Room Emergency Ventilation System) and TS 3.7.11 (Control Room Air Conditioning System) with respect to Applicability and corresponding actions. |
| | With one train (SGK05A or SGK05B) inoperable, recurring Required Action to verify room temperatures are within limits. |
| | Directed cascade Note to enter LCO 3.8.4, 3.8.7, or 3.8.9 if room temperatures are not within limits. The limits will be based on manufacturer design/purchase specification requirements, EQ test results, and the EQ discussions in FSAR Sections 3.11(B).2.3 and 3.11(B).5.7 on control building electrical equipment and mild environments. |
| | 7-day A/C train restoration Completion Time (much less than 30-day CT for CRACS in TS 3.7.11). |
| | 8 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C GOTHIC 7.2(b) room temperature rise calculation for various door opening times and HVAC air delivery temperatures. Updated since 11/3/11 LAR to reflect current design heat loads and HVAC parameters. Final update prior to submittal. |
| | This is not a loss of safety function issue. Opening room doors will allow the operable Class 1E electrical equipment A/C train to serve both trains of supported electrical equipment. |
| | HVAC design temperature for delivered air flow is 60F. Calculation assumes a conservative initial temperature for all air and concrete. Additional equipment modeling still ongoing. |
| | Room temperatures will stay below values that would challenge equipment operability for 30-day ESFAS loading if compensatory measures are implemented (e.g., opening room doors). Specified safety functions will be accomplished. |
| | 9 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C New structure of proposed TS 3.7.20 Condition A will address several NRC concerns on the 11/3/11 LAR. The rest of new TS 3.7.20 will remain the same. |
| | Instead of specifying Required Actions to implement mitigating measures within 8 hours, the revised Condition A will specify Required Action A.1 to periodically verify room temperatures are within limits. |
| | The room temperature limits will be located in FSAR Table 16.7-2 (consistent with their relocation under Callaway License Amendment 103 dated 10/20/95). The verification is accelerated from once per 12 hours under normal plant operation. |
| | Prior to LA103 the Area Temperature Monitoring specification allowed a room to exceed the listed temperature limit by up to 30F for 8 hours while invoking a Special Report. If the limit was exceeded by more than 30F, room temperature had to be restored within 4 hours otherwise affected equipment was declared inoperable. |
| | 10 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Callaway LER 2010-010-00 (ULNRC-05760 dated 3-31-11). LAR dated 11/3/11 withdrawn on 4/30/12. |
| | We are aware of at least 3 other utilities that have filed LERs in 2012 and one other utility that has withdrawn an amendment request this year. |
| | 11 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Precedents Joseph M. Farley Nuclear Plant Amendment 176/169 dated June 27, include: 2008: The NRC approved a non-STS LCO 3.7.19 entitled Engineered Safety Feature (ESF) Room Coolers. The NRC Safety Evaluation cited Vogtle Electric Generating Plant TS 3.7.14, Engineered Safety Features (ESF) Room Cooler and Safety Related Chiller System. |
| | Kewaunee Power Station ITS Conversion Amendment 207 dated February 2, 2011: The NRC approved non-STS ACTIONS Notes in TSs 3.8.4, 3.8.7, and 3.8.9 that allow a 24-hour delay time prior to ACTION entry when the supported electrical equipment is inoperable solely due to non-functional room cooling. |
| | TSTF-477-A Revision 3, Add Actions for Two Inoperable Control Room AC Subsystems, which revised the BWR STS to allow all control room A/C to be lost for 72 hours as long as temperature was verified to be within limits every 4 hours. Approved for Hope Creek in Amendment 191 dated February 8, 2012. |
| | 12 |
| | |
| | AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010: |
| | Class 1E Electrical Equipment A/C Questions? |
| | 13}} |
Letter Sequence Meeting |
|---|
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|
MONTHYEARML12227A3472012-08-14014 August 2012
8/29/2012 Notice of Preapplication Meeting with Union Electric Company to Discuss Request for New Technical Specification Related to Class 1E Electrical Equipment Air Conditioning System at Callaway Plant, Unit 1
Project stage: Meeting
ML12241A2922012-08-29029 August 2012
Class 1E AC Meeting Slides August 29, 2012
Project stage: Meeting
ML12243A3922012-09-18018 September 2012
Meeting Summary with Union Electric Company to Discuss Request for New Technical Specification Related to Class 1E Electrical Equipment Air Conditioning System at Callaway Plant, Unit 1
Project stage: Meeting
2012-08-29
[Table View] |
|
|---|
Category:Meeting Briefing Package/Handouts
MONTHYEARML24157A0642024-06-13013 June 2024
Earls 2024 Workshop Presentation
ML22249A3292022-09-0606 September 2022
Presentation Information for Planned Pre-Application Meeting
ML22174A3472022-06-23023 June 2022
Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis
ML22047A0952022-02-15015 February 2022
Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML22047A0942022-02-15015 February 2022
Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML21271A6132021-09-28028 September 2021
Enclosure 2: Callaway Unit 1 Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML21271A6122021-09-28028 September 2021
Enclosure 1: Callaway Unit 1 Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML21211A0712021-07-30030 July 2021
Meeting Slides for Pre-submittal Teleconference to Discuss EP Revision LAR
ML21123A2622021-05-0303 May 2021
Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML21123A2602021-05-0303 May 2021
Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML21050A2042021-03-31031 March 2021
March 2021 Meeting Slides
ML20248H4672020-09-0404 September 2020
Rict & 50.69 LARs - NRC Pre-Submittal Meeting Slides
ML20170A2032020-06-24024 June 2020
6/24/2020 - Pre-Submittal Meeting for Callaway Plant License Amendment Request to Defer Steam Generator Eddy Current Testing
ML19247B3842019-09-12012 September 2019
GSI-191 / GL 2004-02 Licensing Amendment Request
ML18158A5532018-06-14014 June 2018
Pre-Submittal Meeting for Full Implementation of Alternative Source Term
ML16236A0952016-08-25025 August 2016
and Wolf Creek Generating Station - August 25, 2016, Class 1E Electrical Equipment Air Conditioning System Pre-Application Meeting
ML16152A1232016-06-0101 June 2016
Strainer Testing for GSI-191
ML14050A4022014-02-20020 February 2014
License Renewal Public Meeting Slides 2 20 2014
ML13042A1882013-02-11011 February 2013
01/31/2013 Summary of the Public Meeting to Discuss the Results of the Grand Gulf Nuclear Station License Renewal Inspection
IR 05000483/20120092013-01-25025 January 2013
1/17/2013 - Summary of Public Meeting to Discuss the Results of the Callaway Nuclear Plant License Renewal Inspection (05000483-12-009)
ML12320A3052012-11-15015 November 2012
Licensee Slides for November 15, 2012 Public Meeting to Discuss License Amendment to Use Reg Guide 1.6 Revision 1
ML12241A2912012-08-29029 August 2012
UHS Meeting Slides August 29, 2012
ML12241A2922012-08-29029 August 2012
Class 1E AC Meeting Slides August 29, 2012
ML1115400922011-06-0303 June 2011
Summary of Annual Performance Assessment Meeting with Union Electric Company to Discuss the Callaway Plant Performance for the NRC Inspection Period Ending December 31, 2010
ML1115304052011-05-26026 May 2011
Licensee Slide'S from 5/26/11 Pre-Application Meeting
ML1008804082010-03-25025 March 2010
Licensee Slides Pre-LAR Submittal Telecon
ML0933801482009-11-20020 November 2009
Licensee Handouts from November 20, 2009, Public Meeting with Union Electric Company and Wolf Creek Nuclear Operating Company to Discuss GL 2004-02 Response Rai'S
ML0932104872009-11-17017 November 2009
Summary of Regulatory Conference with Ameren Ue Regarding Callaway Plant
ML0927302752009-10-15015 October 2009
Summary of Meeting with Union Electric Company to Discuss Proposed Risk-Informed Technical Specification License Amendment for Callaway Plant, Unit 1, and Future Adoption of Initiative 4b
ML0916002532009-06-0808 June 2009
Summary of Annual Performance Assessment Meeting with Amerenue for Callaway Plant
ML0910502042009-04-14014 April 2009
Summary of Meeting with Amerenue to Discuss Engineering Related Topics Pertaining to Callaway
ML0904400462009-01-13013 January 2009
Public Scoping Meeting Presentation Slides
ML0815404352008-06-0202 June 2008
Summary of Meeting to Discuss Annual Safety Performance Assessment for Callaway for 2007
ML0802504052008-01-23023 January 2008
Licensee Handout for Meeting with Union Electric Company on the Callaway Plant Relief Request I3R-10 to Use Plastic Pipe in the Safety-Related Essential Service Water (ESW) System
ML0729505272007-10-22022 October 2007
Summary of Meeting with Amerenue Callaway Plant to Discuss Various Topics, Including: Essential Service Water; Current Problem Identification & Resolution Crosscutting Issue; Recent Human Performance Improvements
ML0721102382007-07-24024 July 2007
Performanc Contracting, Inc.'S Powerpoint Slide, Proposed Wolf Creek/Callaway Test Configuration
ML0716000102007-06-0707 June 2007
Summary of Meeting with Union Electric Co Re Callaway Annual Performance Assessment
ML0628602302006-10-12012 October 2006
Handout for Meeting with Nuclear Energy Institute (NEI) to Discuss Concerns Related to Operability Determination of Main Steam and Feedwater Isolation Valves with Dual Actuator Trains
ML0622804372006-08-16016 August 2006
Handouts from Wolf Creek Nuclear Operating Corporation and from Union Electric Company for Meeting with NRC on the Main Steam Isolation Valve (MSIV) Operability Determination
ML0613001302006-05-0909 May 2006
Meeting Summary of 05/04/2006 end-of-cycle Performance Assessment
ML0520804072005-07-27027 July 2005
Summary of Meeting with Union Electric Company Concerning Callaway Plant
ML0330402882003-10-30030 October 2003
Meeting Handout Materials Regarding STARS-IRAG/NRC Meeting to Discuss Topics Taken from the June 10.11, 2003, Workshop
ML0319206482003-06-10010 June 2003
Meeting Handouts for STARS-IRAG/NRC Workshop to Discuss Selected Topics Listed in the Agenda Attached to Meeting Notice
ML0310604602003-04-15015 April 2003
Meeting Handout to Discuss Licensee'S Program to Replace the Steam Generators at Callaway
ML0231200242002-11-0707 November 2002
Meeting Handouts - Meeting with Strategic Teaming and Resources Sharing - Integrated Regulatory Affairs Group
ML0208705662002-04-15015 April 2002
Meetingsummary with Stars and the NRC to Inform the NRC About Current Stars Activities
ML0208107562002-03-19019 March 2002
Operator Licensing Workshop Meeting Summary
2024-06-13
[Table view]
Category:Slides and Viewgraphs
MONTHYEARML24157A0642024-06-13013 June 2024
Earls 2024 Workshop Presentation
ML22249A3292022-09-0606 September 2022
Presentation Information for Planned Pre-Application Meeting
ML22174A3472022-06-23023 June 2022
Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis
ML22047A0942022-02-15015 February 2022
Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML22047A0952022-02-15015 February 2022
Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML21271A6122021-09-28028 September 2021
Enclosure 1: Callaway Unit 1 Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML21271A6132021-09-28028 September 2021
Enclosure 2: Callaway Unit 1 Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML21211A6012021-07-30030 July 2021
Annual Assessment Meeting (Public)
ML21123A2622021-05-0303 May 2021
Presentation Information for Planned Pre-Application Meeting (Closed Meeting), Non-Proprietary (Redacted) Version for Closed Meeting
ML21123A2602021-05-0303 May 2021
Presentation Information for Planned Pre-Application Meeting (Public Meeting)
ML20248H4672020-09-0404 September 2020
Rict & 50.69 LARs - NRC Pre-Submittal Meeting Slides
ML20170A2032020-06-24024 June 2020
6/24/2020 - Pre-Submittal Meeting for Callaway Plant License Amendment Request to Defer Steam Generator Eddy Current Testing
ML19247B3842019-09-12012 September 2019
GSI-191 / GL 2004-02 Licensing Amendment Request
ML18158A5532018-06-14014 June 2018
Pre-Submittal Meeting for Full Implementation of Alternative Source Term
ML16236A0952016-08-25025 August 2016
and Wolf Creek Generating Station - August 25, 2016, Class 1E Electrical Equipment Air Conditioning System Pre-Application Meeting
ML16152A1232016-06-0101 June 2016
Strainer Testing for GSI-191
ML14050A4022014-02-20020 February 2014
License Renewal Public Meeting Slides 2 20 2014
ML13042A1882013-02-11011 February 2013
01/31/2013 Summary of the Public Meeting to Discuss the Results of the Grand Gulf Nuclear Station License Renewal Inspection
IR 05000483/20120092013-01-25025 January 2013
1/17/2013 - Summary of Public Meeting to Discuss the Results of the Callaway Nuclear Plant License Renewal Inspection (05000483-12-009)
ML12320A3052012-11-15015 November 2012
Licensee Slides for November 15, 2012 Public Meeting to Discuss License Amendment to Use Reg Guide 1.6 Revision 1
ML12241A2912012-08-29029 August 2012
UHS Meeting Slides August 29, 2012
ML12241A2922012-08-29029 August 2012
Class 1E AC Meeting Slides August 29, 2012
ML12096A3942012-03-14014 March 2012
Enclosure 5: Callaway Public Meeting Slides
ML1115400922011-06-0303 June 2011
Summary of Annual Performance Assessment Meeting with Union Electric Company to Discuss the Callaway Plant Performance for the NRC Inspection Period Ending December 31, 2010
ML1115304052011-05-26026 May 2011
Licensee Slide'S from 5/26/11 Pre-Application Meeting
ML1008804082010-03-25025 March 2010
Licensee Slides Pre-LAR Submittal Telecon
ML0933801482009-11-20020 November 2009
Licensee Handouts from November 20, 2009, Public Meeting with Union Electric Company and Wolf Creek Nuclear Operating Company to Discuss GL 2004-02 Response Rai'S
ML0932104872009-11-17017 November 2009
Summary of Regulatory Conference with Ameren Ue Regarding Callaway Plant
ML0927302752009-10-15015 October 2009
Summary of Meeting with Union Electric Company to Discuss Proposed Risk-Informed Technical Specification License Amendment for Callaway Plant, Unit 1, and Future Adoption of Initiative 4b
ML0910502042009-04-14014 April 2009
Summary of Meeting with Amerenue to Discuss Engineering Related Topics Pertaining to Callaway
ML0904400462009-01-13013 January 2009
Public Scoping Meeting Presentation Slides
ML0815404352008-06-0202 June 2008
Summary of Meeting to Discuss Annual Safety Performance Assessment for Callaway for 2007
ML0802504052008-01-23023 January 2008
Licensee Handout for Meeting with Union Electric Company on the Callaway Plant Relief Request I3R-10 to Use Plastic Pipe in the Safety-Related Essential Service Water (ESW) System
ML0729505272007-10-22022 October 2007
Summary of Meeting with Amerenue Callaway Plant to Discuss Various Topics, Including: Essential Service Water; Current Problem Identification & Resolution Crosscutting Issue; Recent Human Performance Improvements
ML0721102382007-07-24024 July 2007
Performanc Contracting, Inc.'S Powerpoint Slide, Proposed Wolf Creek/Callaway Test Configuration
ML0628602302006-10-12012 October 2006
Handout for Meeting with Nuclear Energy Institute (NEI) to Discuss Concerns Related to Operability Determination of Main Steam and Feedwater Isolation Valves with Dual Actuator Trains
ML0622804372006-08-16016 August 2006
Handouts from Wolf Creek Nuclear Operating Corporation and from Union Electric Company for Meeting with NRC on the Main Steam Isolation Valve (MSIV) Operability Determination
ML0615106012006-05-23023 May 2006
EPRI HRA Users Group Review of Draft NUREG-1842
ML0611002222006-04-18018 April 2006
Summary of Meeting with Union Electric Company Regarding Callaway Plant, Which Discussed Recent Plant Performance and Various Topics
ML0533202252005-12-0101 December 2005
Ri Schedule 05- Mcmurtray; Lessons Learned from Security-Based Table Top Drills
ML0520804072005-07-27027 July 2005
Summary of Meeting with Union Electric Company Concerning Callaway Plant
ML0430903882004-11-0404 November 2004
Docket No. 50-483 - Licensee'S Slides for Meeting Held on November 4, 2004, to Discuss Its Application on the Steam Generators Replacement in Fall 2005 (Tac No. MC4437)
ML0422602762004-08-12012 August 2004
Meeting Summary of the August 8, 2004 Public Workshop - Region IV Operator Licensing Feedback
ML0408501912004-03-23023 March 2004
Docket No. 50-483 - Slides from Meeting Held on March 23, 2004, to Discuss Licensee'S License Amendment Request Application Dated December 17, 2003
ML0316806212003-07-17017 July 2003
Licensee'S Handouts, Slides and Viewgraphs, 53 Pages, S107210
ML0316806062003-07-17017 July 2003
NRC Handout, Slides and Viewgraphs, 103 Pages, S107211
ML0211402982002-04-24024 April 2002
Annual Performance Assessment Meeting for Callaway Plant
ML0206503632002-03-0606 March 2002
02-27-02 Callaway/Ameren Ue Meeting Summary
2024-06-13
[Table view] |
Text
Overview Ameren Missouri Callaway Plant Class 1E Electrical Equipment Air-Conditioning System August 2010 2012
AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010:
Class 1E Electrical Equipment A/C 2
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Class 1E Electrical Equipment A/C trains (SGK05A/B) support DC Sources, Inverters, and Distribution Systems Currently governed by FSAR Section 16.7.13 (Callaways TRM equivalent)
LAR will discuss the following areas of need as well as industry interest:
TS 1.1 Definition of OPERABLE-OPERABILITY Application of LCO 3.0.6 Single failure criterion Room temperature rise analysis Recent Industry LERs and License Amendment Precedents 3
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Definition of "A system, subsystem, train, component, or device OPERABLE- shall be OPERABLE or have OPERABILITY when it OPERABILITY: is capable of performing its specified safety function(s) and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its specified safety function(s) are also capable of performing their related support function(s). [emphasis added]
The DC sources, inverters, and distribution systems supported by SGK05A/B have their own TS 3.8 LCOs.
The SGK05A/B trains do not currently have their own TS LCO, nor are they discussed in the TS 3.8 Specifications or Bases.
4
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C When a supported system LCO is not met solely due to an inoperable support system, LCO 3.0.6 allows the inoperability to be addressed only within the support system LCO if the support system has a TS LCO.
LCO 3.0.6 cannot be applied to non-TS support systems. Given the requirements of TS 3.8.7 (covering only one inoperable inverter), Callaway currently enters LCO 3.0.3 for one inoperable train of Class 1E electrical equipment A/C until room doors are opened.
Similarly, the rules of usage for TS Conditions stipulate that a single failure need not be postulated when operating with an inoperability covered by a TS Condition entry.
The single failure provision does not apply to non-TS LCOs.
5
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C ESF Switchgear Rooms 6
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C DC Switchgear and Battery Rooms 7
AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Proposed resolution is to add new TS LCO 3.7.20.
Conditions and Required Actions to be structured similarly to TS 3.7.10 (Control Room Emergency Ventilation System) and TS 3.7.11 (Control Room Air Conditioning System) with respect to Applicability and corresponding actions.
With one train (SGK05A or SGK05B) inoperable, recurring Required Action to verify room temperatures are within limits.
Directed cascade Note to enter LCO 3.8.4, 3.8.7, or 3.8.9 if room temperatures are not within limits. The limits will be based on manufacturer design/purchase specification requirements, EQ test results, and the EQ discussions in FSAR Sections 3.11(B).2.3 and 3.11(B).5.7 on control building electrical equipment and mild environments.
7-day A/C train restoration Completion Time (much less than 30-day CT for CRACS in TS 3.7.11).
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AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C GOTHIC 7.2(b) room temperature rise calculation for various door opening times and HVAC air delivery temperatures. Updated since 11/3/11 LAR to reflect current design heat loads and HVAC parameters. Final update prior to submittal.
This is not a loss of safety function issue. Opening room doors will allow the operable Class 1E electrical equipment A/C train to serve both trains of supported electrical equipment.
HVAC design temperature for delivered air flow is 60F. Calculation assumes a conservative initial temperature for all air and concrete. Additional equipment modeling still ongoing.
Room temperatures will stay below values that would challenge equipment operability for 30-day ESFAS loading if compensatory measures are implemented (e.g., opening room doors). Specified safety functions will be accomplished.
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AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C New structure of proposed TS 3.7.20 Condition A will address several NRC concerns on the 11/3/11 LAR. The rest of new TS 3.7.20 will remain the same.
Instead of specifying Required Actions to implement mitigating measures within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, the revised Condition A will specify Required Action A.1 to periodically verify room temperatures are within limits.
The room temperature limits will be located in FSAR Table 16.7-2 (consistent with their relocation under Callaway License Amendment 103 dated 10/20/95). The verification is accelerated from once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> under normal plant operation.
Prior to LA103 the Area Temperature Monitoring specification allowed a room to exceed the listed temperature limit by up to 30F for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> while invoking a Special Report. If the limit was exceeded by more than 30F, room temperature had to be restored within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> otherwise affected equipment was declared inoperable.
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AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Callaway LER 2010-010-00 (ULNRC-05760 dated 3-31-11). LAR dated 11/3/11 withdrawn on 4/30/12.
We are aware of at least 3 other utilities that have filed LERs in 2012 and one other utility that has withdrawn an amendment request this year.
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AMEREN MISSOURI CALLAWAY PLANT Class 1E Electrical Equipment A/C Precedents Joseph M. Farley Nuclear Plant Amendment 176/169 dated June 27, include: 2008: The NRC approved a non-STS LCO 3.7.19 entitled Engineered Safety Feature (ESF) Room Coolers. The NRC Safety Evaluation cited Vogtle Electric Generating Plant TS 3.7.14, Engineered Safety Features (ESF) Room Cooler and Safety Related Chiller System.
Kewaunee Power Station ITS Conversion Amendment 207 dated February 2, 2011: The NRC approved non-STS ACTIONS Notes in TSs 3.8.4, 3.8.7, and 3.8.9 that allow a 24-hour delay time prior to ACTION entry when the supported electrical equipment is inoperable solely due to non-functional room cooling.
TSTF-477-A Revision 3, Add Actions for Two Inoperable Control Room AC Subsystems, which revised the BWR STS to allow all control room A/C to be lost for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> as long as temperature was verified to be within limits every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. Approved for Hope Creek in Amendment 191 dated February 8, 2012.
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AMEREN MISSOURI CALLAWAY PLANT License Amendment Request 11-0010:
Class 1E Electrical Equipment A/C Questions?
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