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| | author name = Hale S | | | author name = Hale S |
| | author affiliation = NextEra Energy Point Beach, LLC | | | author affiliation = NextEra Energy Point Beach, LLC |
| | addressee name = Jones S R | | | addressee name = Jones S |
| | addressee affiliation = NRC/NRR/DSS/SNPB | | | addressee affiliation = NRC/NRR/DSS/SNPB |
| | docket = 05000266, 05000301 | | | docket = 05000266, 05000301 |
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| =Text= | | =Text= |
| {{#Wiki_filter:From: Hale, Steve [Steve.Hale@nexteraenergy.com] Sent: Friday, September 03, 2010 1:13 PM To: Jones, Steve Cc: Beltz, Terry | | {{#Wiki_filter:From: |
| | Hale, Steve [Steve.Hale@nexteraenergy.com] |
| | Sent: |
| | Friday, September 03, 2010 1:13 PM To: |
| | Jones, Steve Cc: |
| | Beltz, Terry |
|
| |
|
| ==Subject:== | | ==Subject:== |
| RE: Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure Steve, You captured our discussion accurately. Thanks for your time. | | RE: Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure |
| | | : Steve, You captured our discussion accurately. Thanks for your time. |
| Steve From: Jones, Steve [mailto:Steve.Jones@nrc.gov] Sent: Friday, September 03, 2010 12:18 PM To: Beltz, Terry Cc: Hale, Steve | | Steve From: Jones, Steve [mailto:Steve.Jones@nrc.gov] |
| | Sent: Friday, September 03, 2010 12:18 PM To: Beltz, Terry Cc: Hale, Steve |
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| |
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| ==Subject:== | | ==Subject:== |
| Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure The following people participated in a conference call at 9:00am on September 3, 2010, to clarify discussions of dynamic analyses of fast closure of main feedwater valves at Point Beach Nuclear Plant (PBNP): Steve Jones - USNRC - Balance of Plant Branch. | | Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure The following people participated in a conference call at 9:00am on September 3, 2010, to clarify discussions of dynamic analyses of fast closure of main feedwater valves at Point Beach Nuclear Plant (PBNP): |
| | Steve Jones - USNRC - Balance of Plant Branch. |
| Steve Hale - lead for the Point Beach EPU and associated amendments. | | Steve Hale - lead for the Point Beach EPU and associated amendments. |
| Jim Costedio - Point Beach Licensing Manager. | | Jim Costedio - Point Beach Licensing Manager. |
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| The responses to requests for additional information provided by letters dated June 24, 2010, and August 24, 2010, described the feedwater valve dynamic analysis and indicated that the closure of the main feedwater regulating valves (MFRVs) with the feedwater pumps operating was bounding because the MFRVs are faster acting. However, the EPU licensing report provided as an attachment to the license amendment request described that the MFRV operating time would be increased to 10 seconds and the new feedwater isolation valves would have a closure time of no more than 5 seconds. The licensee clarified that the licensing report described the maximum operating time for the valves, which is a consideration in the containment analysis for a the steam line break accident. However, the dynamic valve closure analysis considers the minimum operating time, which the licensee specified as 3 seconds for both valves. Because the MFRVs are control valves, the MFRVs would be only partially open for the initial condition of 100 percent uprated power at steady state, which was the initial condition of the dynamic analyses specified in the August 24, 2010, response. The MFIVs are isolation valves and would be fully open for all normal plant operating states. The licensee explained that the partially open state of the MFRVs was considered in determining the minimum valve closure times for the dynamic analysis. | | The responses to requests for additional information provided by letters dated June 24, 2010, and August 24, 2010, described the feedwater valve dynamic analysis and indicated that the closure of the main feedwater regulating valves (MFRVs) with the feedwater pumps operating was bounding because the MFRVs are faster acting. However, the EPU licensing report provided as an attachment to the license amendment request described that the MFRV operating time would be increased to 10 seconds and the new feedwater isolation valves would have a closure time of no more than 5 seconds. The licensee clarified that the licensing report described the maximum operating time for the valves, which is a consideration in the containment analysis for a the steam line break accident. However, the dynamic valve closure analysis considers the minimum operating time, which the licensee specified as 3 seconds for both valves. Because the MFRVs are control valves, the MFRVs would be only partially open for the initial condition of 100 percent uprated power at steady state, which was the initial condition of the dynamic analyses specified in the August 24, 2010, response. The MFIVs are isolation valves and would be fully open for all normal plant operating states. The licensee explained that the partially open state of the MFRVs was considered in determining the minimum valve closure times for the dynamic analysis. |
| Thus, the MFRVs would have the shortest closure time and provide a bounding input with respect to dynamic analysis of feedwater isolation. | | Thus, the MFRVs would have the shortest closure time and provide a bounding input with respect to dynamic analysis of feedwater isolation. |
| Steve Jones Steven R. Jones Sr. Reactor Systems Engineer | | Steve Jones Steven R. Jones Sr. Reactor Systems Engineer |
|
| |
|
| NRR/DSS/SBPB 301-415-2712}} | | NRR/DSS/SBPB 301-415-2712}} |
Letter Sequence Meeting |
|---|
TAC:ME1081, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) TAC:ME1082, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
|
MONTHYEAR05000255/LER-2008-007-01, Potential Loss of a Safety Function Due to Non-Conservative Auxiliary Feedwater Trip Setpoints2009-01-21021 January 2009
Potential Loss of a Safety Function Due to Non-Conservative Auxiliary Feedwater Trip Setpoints
Project stage: Request
NRC 2009-0030, License Amendment Request 261, Extended Power Uprate2009-04-0707 April 2009
License Amendment Request 261, Extended Power Uprate
Project stage: Request
ML0912505692009-04-0707 April 2009
Attachment 5 - Point Beach, Units 1 and 2, License Amendment Request 261, Extended Power Uprate, Licensing Report, Chapter 2, Section 2.5.8 Through Appendices
Project stage: Request
ML0910006472009-04-0808 April 2009
Transmittal of Background Information to Support License Amendment Request 261 Interconnection System Impact Study
Project stage: Request
NRC 2009-0058, Response to Request for Additional Information License Amendment Request 241 Alternative Source Term2009-06-0101 June 2009
Response to Request for Additional Information License Amendment Request 241 Alternative Source Term
Project stage: Response to RAI
NRC 2009-0066, License Amendment Request 261 Supplement 1 Extended Power Uprate2009-06-17017 June 2009
License Amendment Request 261 Supplement 1 Extended Power Uprate
Project stage: Supplement
NRC 2009-0068, License Amendment Request 261 Supplement 2 Extended Power Uprate2009-06-17017 June 2009
License Amendment Request 261 Supplement 2 Extended Power Uprate
Project stage: Supplement
ML0917603382009-06-29029 June 2009
Deferral of the Extended Power Uprate Acceptance Review and Acceptance Review of the Auxiliary Feedwater Modifications and Non Conservative Setpoint Technical Specifications
Project stage: Acceptance Review
ML0921905632009-08-0606 August 2009
Extended Power Uprate and Alternate Source Term Review Planning Meeting Presentation
Project stage: Request
ML0922402982009-08-0606 August 2009
Extended Power Uprate and Alternate Source Term Review Planning Meeting Presentation (Handout 2)
Project stage: Request
ML0922500082009-08-25025 August 2009
Extended Power Uprate (EPU) Acceptance Review
Project stage: Acceptance Review
ML0923104542009-08-26026 August 2009
Request for Additional Information from Electrical Engineering Branch Regarding Auxiliary Feedwater
Project stage: RAI
ML0924305172009-08-31031 August 2009
Notice of Meeting on AFW Modifications, Questions to Be Discussed
Project stage: Meeting
L-2009-207, Units 1 & 2, Update to Decommissioning Funding Status and Financial Assurance Plan2009-09-11011 September 2009
Units 1 & 2, Update to Decommissioning Funding Status and Financial Assurance Plan
Project stage: Request
NRC 2009-0094, License Amendment Request 261 Extended Power Uprate Expedited Review Request2009-09-11011 September 2009
License Amendment Request 261 Extended Power Uprate Expedited Review Request
Project stage: Request
ML0923211842009-09-14014 September 2009
Meeting Summary, Meeting with FPL Energy Point Beach, LLC, on the Extended Power Uprate and Alternate Source Term Amendments
Project stage: Meeting
NRC 2009-0098, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information2009-09-25025 September 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information
Project stage: Response to RAI
NRC 2009-0108, License Amendment Request 261, Extended Power Uprate Response to Acceptance Review Questions2009-10-0909 October 2009
License Amendment Request 261, Extended Power Uprate Response to Acceptance Review Questions
Project stage: Request
ML0928005432009-10-19019 October 2009
Nonacceptance with the Opportunity to Supplement Letter for Extended Power Uprate
Project stage: Other
ML0929305162009-10-22022 October 2009
Request for Additional Information from Mechanical and Civil Engineering Branch Auxiliary Feedwater Modification
Project stage: RAI
ML0929308342009-10-22022 October 2009
Request for Additional Information from Balance of Plant Branch Auxiliary Feedwater Modification
Project stage: RAI
ML0929201272009-10-28028 October 2009
Summary of Meeting with FPL Energy Point Beach, LLC on the Auxiliary Feedwater Modification Amendment
Project stage: Meeting
ML0930205422009-11-0404 November 2009
Acceptance Review of Requested Licensing Action Regarding Extended Power Uprate
Project stage: Acceptance Review
ML0930603312009-11-0505 November 2009
Request for Additional Information from Technical Specification Branch Non-conservative Setpoint Changes (TAC Nos. ME1083 & ME1084)
Project stage: RAI
ML0930603012009-11-0606 November 2009
Request for Additional Information from Technical Specifications Branch Regarding Auxiliary Feedwater
Project stage: RAI
NRC 2009-0114, Transmittal of Background Information to Support License Amendment Request 261 Final Interconnection System Impact Study2009-11-13013 November 2009
Transmittal of Background Information to Support License Amendment Request 261 Final Interconnection System Impact Study
Project stage: Request
ML0931402312009-11-16016 November 2009
Request for Additional Information from Balance of Plant Branch Regarding Main Feedwater Isolation Valves
Project stage: RAI
NRC 2009-0125, License Amendment Request 261 Re Extended Power Uprate, Response to Request for Additional Information on Auxiliary Feedwater System2009-11-20020 November 2009
License Amendment Request 261 Re Extended Power Uprate, Response to Request for Additional Information on Auxiliary Feedwater System
Project stage: Response to RAI
NRC 2009-0123, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information for Calculation of the Auxiliary Feedwater Pump Low Suction Pressure Setpoint2009-11-20020 November 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information for Calculation of the Auxiliary Feedwater Pump Low Suction Pressure Setpoint
Project stage: Response to RAI
NRC 2009-0116, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information2009-11-21021 November 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information
Project stage: Response to RAI
NRC 2009-0115, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information2009-11-21021 November 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information
Project stage: Response to RAI
ML0932400282009-11-24024 November 2009
Request for Additional Information from Reactor Systems Branch Regarding Extended Power Uprate
Project stage: RAI
NRC 2009-0124, License Amendment Request 261 Extended Power Uprate Response to Request for Additional Information2009-11-30030 November 2009
License Amendment Request 261 Extended Power Uprate Response to Request for Additional Information
Project stage: Response to RAI
NRC 2009-0120, License Amendment Request 261, Supplement 3 Extended Power Uprate2009-12-0808 December 2009
License Amendment Request 261, Supplement 3 Extended Power Uprate
Project stage: Supplement
NRC 2009-0122, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information2009-12-16016 December 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information
Project stage: Response to RAI
NRC 2009-0128, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information2009-12-21021 December 2009
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Information
Project stage: Response to RAI
ML0935002032009-12-22022 December 2009
Request for Additional Information from Reactor Systems Branch EPU Expedited Portions
Project stage: RAI
NRC 2010-0003, License Amendment Request 261, Extended Power Uprate Auxiliary Feedwater System Pipe Stress Analysis Information2010-01-0808 January 2010
License Amendment Request 261, Extended Power Uprate Auxiliary Feedwater System Pipe Stress Analysis Information
Project stage: Request
ML1000800812010-01-13013 January 2010
Request for Additional Information from Balance of Plant Branch Extended Power Uprate
Project stage: RAI
NRC 2010-0005, License Amendment Request 261 Extended Power Uprate Response to Request for Additional Information2010-01-13013 January 2010
License Amendment Request 261 Extended Power Uprate Response to Request for Additional Information
Project stage: Response to RAI
ML1002500112010-01-22022 January 2010
Response Request for Additional Information License Amendment Request 261 Extended Power Uprate
Project stage: Request
NRC 2010-0013, License Amendment Request 264 - Diesel Fuel Oil Storage Requirements2010-01-27027 January 2010
License Amendment Request 264 - Diesel Fuel Oil Storage Requirements
Project stage: Request
ML1001203312010-02-0101 February 2010
Request for Additional Information from Electrical Engineering Branch Auxiliary Feedwater - Round 2
Project stage: RAI
NRC 2010-0022, License Amendment Request 261, Extended Power Uprate & Transmittal of Proposed Technical Specifications for Reactor Protection System & Engineered Safety Features Setpoints Not Associated with Extended Power Uprate2010-02-25025 February 2010
License Amendment Request 261, Extended Power Uprate & Transmittal of Proposed Technical Specifications for Reactor Protection System & Engineered Safety Features Setpoints Not Associated with Extended Power Uprate
Project stage: Request
NRC 2010-0012, License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Lnformation2010-03-0303 March 2010
License Amendment Request 261, Extended Power Uprate, Response to Request for Additional Lnformation
Project stage: Request
ML1006803682010-03-10010 March 2010
Notice of Meeting with FPL Energy Point Beach, LLC, to Discuss the Alternative Source Term, Auxiliary Feedwater, and Extended Power Uprate Amendments
Project stage: Meeting
ML1007806102010-03-25025 March 2010
Request for Additional Information, Extended Power Uprate
Project stage: RAI
ML1007506852010-03-25025 March 2010
Request for Additional Information, Extended Power Uprate
Project stage: RAI
ML1008103682010-03-25025 March 2010
Request for Additional Information, Extended Power Uprate
Project stage: RAI
ML1007804772010-03-31031 March 2010
Request for Additional Information, Extended Power Uprate
Project stage: RAI
2009-04-08
[Table View] |
Text
From:
Hale, Steve [Steve.Hale@nexteraenergy.com]
Sent:
Friday, September 03, 2010 1:13 PM To:
Jones, Steve Cc:
Beltz, Terry
Subject:
RE: Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure
- Steve, You captured our discussion accurately. Thanks for your time.
Steve From: Jones, Steve [1]
Sent: Friday, September 03, 2010 12:18 PM To: Beltz, Terry Cc: Hale, Steve
Subject:
Summary of Teleconference to Clarify RAI Response Regarding Dynamic Analysis of Feedwater Valve Fast Closure The following people participated in a conference call at 9:00am on September 3, 2010, to clarify discussions of dynamic analyses of fast closure of main feedwater valves at Point Beach Nuclear Plant (PBNP):
Steve Jones - USNRC - Balance of Plant Branch.
Steve Hale - lead for the Point Beach EPU and associated amendments.
Jim Costedio - Point Beach Licensing Manager.
Harv Hanneman - Licensing Engineer.
Jim Connolly, Norm Hanley and Allan Traft - contract engineers from Shaw, Inc.
The responses to requests for additional information provided by letters dated June 24, 2010, and August 24, 2010, described the feedwater valve dynamic analysis and indicated that the closure of the main feedwater regulating valves (MFRVs) with the feedwater pumps operating was bounding because the MFRVs are faster acting. However, the EPU licensing report provided as an attachment to the license amendment request described that the MFRV operating time would be increased to 10 seconds and the new feedwater isolation valves would have a closure time of no more than 5 seconds. The licensee clarified that the licensing report described the maximum operating time for the valves, which is a consideration in the containment analysis for a the steam line break accident. However, the dynamic valve closure analysis considers the minimum operating time, which the licensee specified as 3 seconds for both valves. Because the MFRVs are control valves, the MFRVs would be only partially open for the initial condition of 100 percent uprated power at steady state, which was the initial condition of the dynamic analyses specified in the August 24, 2010, response. The MFIVs are isolation valves and would be fully open for all normal plant operating states. The licensee explained that the partially open state of the MFRVs was considered in determining the minimum valve closure times for the dynamic analysis.
Thus, the MFRVs would have the shortest closure time and provide a bounding input with respect to dynamic analysis of feedwater isolation.
Steve Jones Steven R. Jones Sr. Reactor Systems Engineer
NRR/DSS/SBPB 301-415-2712
