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Category:CORRESPONDENCE-LETTERS
MONTHYEARPLA-5120, Forwards Change J to SSES Security Training & Qualification Plan.Without Encl1999-10-22022 October 1999 Forwards Change J to SSES Security Training & Qualification Plan.Without Encl ML18040B2951999-09-0808 September 1999 Requests Info Re Any NRC or Susquehanna Documented Concerns with MSIV Reliability Prior to Plant Trip & Assurance to Public That NRC Able to Detect Mgt Problems Early PLA-5094, Forwards,For Review,Change 00 to SSES Physical Security Plan.Without Encl1999-08-24024 August 1999 Forwards,For Review,Change 00 to SSES Physical Security Plan.Without Encl ML18040A9741999-07-0808 July 1999 Forwards Rev 30 to SSES Emergency Plan, Adding EAL to Account for Potential Conditions Associated with Dry Cask Storage Sys Being Installed at Plant ML20207G5051999-06-0707 June 1999 Informs That NRC Office of NRR Reorganized Effective 990328.As Part of Reorganization,Divison of Licensing Project Management Created PLA-5072, Forwards Change Nn to SSES Physical Security Plan.Util Determined That Changes Do Not Decrease Safeguards Effectiveness of Plan,Per 10CFR50.54(p).Encl Withheld from Public Disclosure,Per 10CFR73.211999-06-0404 June 1999 Forwards Change Nn to SSES Physical Security Plan.Util Determined That Changes Do Not Decrease Safeguards Effectiveness of Plan,Per 10CFR50.54(p).Encl Withheld from Public Disclosure,Per 10CFR73.21 ML18040A9731999-05-24024 May 1999 Submits Response to RAI Re Exemption from Biennial Exercise Schedule.Changing of Drill Date Will Not Reduce Level of Emergency Preparedness at Plant ML20195B2181999-05-20020 May 1999 Forwards Proprietary Decommissioning Status Rept for 10% Interest in Sses,Units 1 & 2.Proprietary Info Withheld,Per 10CFR2.790 ML18040B2901999-04-30030 April 1999 Forwards Summary Rept of Safety Evaluations Approved During Period from 961024-981029,per 10CFR50.59(b).Format of Rept, Listed PLA-5041, Forwards Proprietary & Redacted Decommissioning Rept of Financial Assurance for Util 90% Interest in Sses,Units 1 & 2,per 10CFR50.75(f)(1).Proprietary Info Withheld,Per 10CFR2.7901999-03-29029 March 1999 Forwards Proprietary & Redacted Decommissioning Rept of Financial Assurance for Util 90% Interest in Sses,Units 1 & 2,per 10CFR50.75(f)(1).Proprietary Info Withheld,Per 10CFR2.790 ML18040A9691999-03-12012 March 1999 Forwards Revised Proposed Amend 227 to License NPF-14, Proposing Changes to ANFB-10 Critical Power Correlation & MCPR Safety Limits ML17164A9891999-03-12012 March 1999 Informs That Util 990312 Ltr (PLA-5040) Submitted to NRC, Missing Encl C.Requests to Replace Package in Entirety with Encl ML18040A9721999-03-11011 March 1999 Requests That Date for full-participation SSES Exercise, Scheduled for Week of 991115,be Changed Due to FEMA Region III Scheduling Conflicts.Fema Requests That Exercise Date Be Changed to Week of 001031 PLA-4852, Forwards non-redacted Version of Pp&L,Inc Corporate Auditing Rept 739459-2-98,dated 980210.Informs That Document Contains Info to Be Withheld IAW 10CFR2.7901999-02-18018 February 1999 Forwards non-redacted Version of Pp&L,Inc Corporate Auditing Rept 739459-2-98,dated 980210.Informs That Document Contains Info to Be Withheld IAW 10CFR2.790 ML20203G5821999-02-17017 February 1999 Second Final Response to FOIA Request for Documents. Documents Listed in App C Being Released in Entirety. Documents Listed in App D Being Withheld in Part (Ref FOIA Exemption 5) ML20202F4761999-01-29029 January 1999 First Partial Response to FOIA Request for Documents.Records in App a Encl & Being Released in Entirety.App B Records Being Withheld in Part (Ref FOIA Exemption 7C) ML18040A9671999-01-29029 January 1999 Notifies That Util Implemented Severe Accident Mgt Strategy in Accordance with Ltr Dtd 950327.Emegency Plan Revs Which Were Required to Implement Strategy Were Submitted by Ltr Dtd 981125 ML18040A9681999-01-29029 January 1999 Requests Exemption from Requirements of 10CFR50 App E,Items IVF.2.b & C,To Allowed to Reschedule Federally Observed Full Participation Emergency Exercise for SSES from Wk of 991115 to Wk of 001031 ML18040A9651999-01-12012 January 1999 Submits Addl Info Re Proposed Amend 184 to License NPF-22 for ANFB-10 Critical Power Correlation & MCPR Safety Limits ML18030A1021998-12-16016 December 1998 Forwards Tables as Requested During 981202 Telcon Re Proposed Amend 184,dtd 980804,re ANFB-10 Critical Power Correlation & MCPR Safety Limits.Tables Provide Roadmap Identifying Applicability of References to TSs ML18030A4331998-11-25025 November 1998 Forwards Rev 29 to SSES Emergecny Plan.Changes Has Been Made Without Commission Approval as It Does Not Decrease Effectiveness of Plan & Plan as Changed Continues to Satisfy Applicable Requirements of App E to 10CFR50 ML20195J9101998-11-18018 November 1998 Forwards Notice of Withdrawal of Application for Amends to Facility Operating Licenses (Notice).Notice Has Been Filed with Ofc of Fr.Amends Would Have Revised TS to Eliminate HPCI Pump auto-transfer on High Suppression Pool Level ML20155F7201998-11-0303 November 1998 Final Response to FOIA Request for Documents.Documents Listed in App B Being Encl & Being Released in Entirety. Documents Listed in App C Being Withheld in Part (Ref Exemption 7C) ML18026A2941998-10-19019 October 1998 Forwards SSES ISI Outage Summary Rept for Unit 1 Tenth Refueling & Insp Outage ML18030A4321998-10-12012 October 1998 Forwards Rev 28 to SSES Emergency Plan, IAW Requirements of 10CFR50.54q.Change Is Summarized PLA-4993, Forwards Change Mm to SSES Physical Security Plan.Encl Withheld,Per 10CFR73.211998-10-12012 October 1998 Forwards Change Mm to SSES Physical Security Plan.Encl Withheld,Per 10CFR73.21 ML18030A1001998-10-12012 October 1998 Forwards Rev 27 to SSES Emergency Plan. Changes Become Effective Upon Implementation of Improved Tech Specs ML18030A4311998-09-29029 September 1998 Forwards Rev 27 & 28 to SSES Emergency Plan ML20151W4951998-09-10010 September 1998 Informs That as Part of NRC Probabilistic Risk Assessment Implementation Plan,Commission Assigned Two Senior Reactor Analysts (Sras) to Each Regional Ofc.T Shedlosky & J Trapp Has Been Assigned SRAs for Region I IR 05000387/19980081998-09-0808 September 1998 Provides Response to Violations Noted in Insp Repts 50-387/98-08 & 50-388/98-08.Corrective Actions:Current Administrative Controls on Fuel Level in EDG Day Tanks Will Remain in Effect Until TS Change is Approved ML18030A0991998-09-0808 September 1998 Provides Response to Violations Noted in Insp Repts 50-387/98-08 & 50-388/98-08.Corrective Actions:Current Administrative Controls on Fuel Level in EDG Day Tanks Will Remain in Effect Until TS Change Is Approved ML18026A4961998-08-31031 August 1998 Responds to NRC 980731 Ltr Re Violations Noted in Insp Repts 50-387/98-03 & 50-388/98-03.Corrective Actions:Procurement & Affected User Group Personnel Visited EDG Vendor Facilities to Appraise Vendor Work Practices & Discuss Expectations IR 05000387/19980031998-08-31031 August 1998 Responds to NRC 980731 Ltr Re Violations Noted in Insp Repts 50-387/98-03 & 50-388/98-03.Corrective Actions:Procurement & Affected User Group Personnel Visited EDG Vendor Facilities to Appraise Vendor Work Practices & Discuss Expectations ML20202F5501998-07-17017 July 1998 Responds to PP&L Corp Auditing Repts 739459-97,739459-1-97 & 739459-2-98 Re SSES Investigations Into Missed Alarm Tests ML20236P9451998-07-15015 July 1998 Forwards Emergency Response Data Sys Implementation Documents Including Data Point Library Updates for Oconee (Number 255),Dresden (Number 257) & Susquehanna (Number 258) ML18030A4291998-07-0808 July 1998 Forwards Final Version of SSES TS Implementing Improved TS of NUREG-1433.Implementation of Proposed Amend Is Predicted on NRC Issuance of Amends & Proposed to Not Exceed 90 Days from Date of Amend Issue ML18017A2181998-07-0808 July 1998 Forwards Final Version of SSES TS Implementing Improved Tech Specs of NUREG 1433.Implementation of Proposed Amend Is Predicated on NRC Issuance of Amends & Is Proposed to Not Exceed 90 Days from Date of Amend Issuance ML18026A2901998-06-0909 June 1998 Forwards Rev 26 to Emergency Plan IAW 10CFR50.54q.Summary of Changes Listed ML18026A2891998-05-22022 May 1998 Submits Withdrawal of Expedited Review/Approval of Tech Specs/Bases 3/4.3.7.11 & 3/4.11.2.6 & Response to Request for Addl Info Re Offgas Sys Mods ML18026A4941998-05-12012 May 1998 Responds to NRC Request to Resubmit Proposal to Change TS for Plant,Units 1 & 2,to Support Implementation of Improved TS & to Implement Provisions of GL 86-10 Re Relocation of Plant'S Fire Protection Program from TS to Another Document ML20202H1331998-04-16016 April 1998 Partially Deleted Ltr Re Concerns Raised to NRC Concerning PP&L Susquehanna Facility NUREG-0619, Informs That Staff Finds PP&L 980330 Request for Relief from Requirements of Section 4.3 of NUREG-0619,exams of Feedwater Nozzle Bore & Inner Radius for Another Operating Cycle to Be Acceptable1998-04-15015 April 1998 Informs That Staff Finds PP&L 980330 Request for Relief from Requirements of Section 4.3 of NUREG-0619,exams of Feedwater Nozzle Bore & Inner Radius for Another Operating Cycle to Be Acceptable ML20216B6811998-04-0101 April 1998 First Partial Response to FOIA Request for Documents. Forwards Documents Listed in App a Being Released in Entirety ML17159A2341998-03-30030 March 1998 Forwards LER 97-007-01,per 10CFR50.73(a)(2)(i)(B).Revised LER Submitted to Modify Previous Position W/Regards to Entry Into TS 3.0.3 for Event PLA-4865, Forwards Listed non-redacted Pp&L,Inc Corporate Auditing Repts.Informs That Document Contains Info to Be Withheld IAW 10CFR2.7901998-03-11011 March 1998 Forwards Listed non-redacted Pp&L,Inc Corporate Auditing Repts.Informs That Document Contains Info to Be Withheld IAW 10CFR2.790 ML17159A1781998-03-0202 March 1998 Forwards Proposed Amends 203 & 161 to License NPF-14 & NPF-22,revising Tech Specs to Be Consistent w/NUREG-1433,rev 1, Std Tech Specs for GE Plants,Bwr 4. PLA-4856, Forwards Proposed Amends to Licenses NPF-14 & NPF-22, Revising TS to Be Consistent w/NUREG-1433,rev 1, Std TS for GE Plants,Bwr 4. Proposed TS Consistent w/NUREG-1433,rev 1, Encl1998-03-0202 March 1998 Forwards Proposed Amends to Licenses NPF-14 & NPF-22, Revising TS to Be Consistent w/NUREG-1433,rev 1, Std TS for GE Plants,Bwr 4. Proposed TS Consistent w/NUREG-1433,rev 1, Encl PLA-4854, Provides Summary of Investigations That PP&L Performed in Response to Concerns Identified by Former Nuclear Plant Operator.Summary Requested by Cj Anderson on 9802131998-02-27027 February 1998 Provides Summary of Investigations That PP&L Performed in Response to Concerns Identified by Former Nuclear Plant Operator.Summary Requested by Cj Anderson on 980213 ML20203M5071998-02-26026 February 1998 Final Response to FOIA Request for Documents.Records in App a Being Placed in PDR & Encl.Records in App B Partially Withheld (Ref FOIA Exemption 6) ML20203B5931998-02-23023 February 1998 Ack Receipt of & Wire in Amount of $55,000 in Payment for Civil Penatly Proposed by NRC Ltr . Corrective Actions Will Be Examined During Future Inspections 1999-09-08
[Table view] Category:INCOMING CORRESPONDENCE
MONTHYEARPLA-5120, Forwards Change J to SSES Security Training & Qualification Plan.Without Encl1999-10-22022 October 1999 Forwards Change J to SSES Security Training & Qualification Plan.Without Encl ML18040B2951999-09-0808 September 1999 Requests Info Re Any NRC or Susquehanna Documented Concerns with MSIV Reliability Prior to Plant Trip & Assurance to Public That NRC Able to Detect Mgt Problems Early PLA-5094, Forwards,For Review,Change 00 to SSES Physical Security Plan.Without Encl1999-08-24024 August 1999 Forwards,For Review,Change 00 to SSES Physical Security Plan.Without Encl ML18040A9741999-07-0808 July 1999 Forwards Rev 30 to SSES Emergency Plan, Adding EAL to Account for Potential Conditions Associated with Dry Cask Storage Sys Being Installed at Plant PLA-5072, Forwards Change Nn to SSES Physical Security Plan.Util Determined That Changes Do Not Decrease Safeguards Effectiveness of Plan,Per 10CFR50.54(p).Encl Withheld from Public Disclosure,Per 10CFR73.211999-06-0404 June 1999 Forwards Change Nn to SSES Physical Security Plan.Util Determined That Changes Do Not Decrease Safeguards Effectiveness of Plan,Per 10CFR50.54(p).Encl Withheld from Public Disclosure,Per 10CFR73.21 ML18040A9731999-05-24024 May 1999 Submits Response to RAI Re Exemption from Biennial Exercise Schedule.Changing of Drill Date Will Not Reduce Level of Emergency Preparedness at Plant ML20195B2181999-05-20020 May 1999 Forwards Proprietary Decommissioning Status Rept for 10% Interest in Sses,Units 1 & 2.Proprietary Info Withheld,Per 10CFR2.790 ML18040B2901999-04-30030 April 1999 Forwards Summary Rept of Safety Evaluations Approved During Period from 961024-981029,per 10CFR50.59(b).Format of Rept, Listed PLA-5041, Forwards Proprietary & Redacted Decommissioning Rept of Financial Assurance for Util 90% Interest in Sses,Units 1 & 2,per 10CFR50.75(f)(1).Proprietary Info Withheld,Per 10CFR2.7901999-03-29029 March 1999 Forwards Proprietary & Redacted Decommissioning Rept of Financial Assurance for Util 90% Interest in Sses,Units 1 & 2,per 10CFR50.75(f)(1).Proprietary Info Withheld,Per 10CFR2.790 ML17164A9891999-03-12012 March 1999 Informs That Util 990312 Ltr (PLA-5040) Submitted to NRC, Missing Encl C.Requests to Replace Package in Entirety with Encl ML18040A9691999-03-12012 March 1999 Forwards Revised Proposed Amend 227 to License NPF-14, Proposing Changes to ANFB-10 Critical Power Correlation & MCPR Safety Limits ML18040A9721999-03-11011 March 1999 Requests That Date for full-participation SSES Exercise, Scheduled for Week of 991115,be Changed Due to FEMA Region III Scheduling Conflicts.Fema Requests That Exercise Date Be Changed to Week of 001031 PLA-4852, Forwards non-redacted Version of Pp&L,Inc Corporate Auditing Rept 739459-2-98,dated 980210.Informs That Document Contains Info to Be Withheld IAW 10CFR2.7901999-02-18018 February 1999 Forwards non-redacted Version of Pp&L,Inc Corporate Auditing Rept 739459-2-98,dated 980210.Informs That Document Contains Info to Be Withheld IAW 10CFR2.790 ML18040A9681999-01-29029 January 1999 Requests Exemption from Requirements of 10CFR50 App E,Items IVF.2.b & C,To Allowed to Reschedule Federally Observed Full Participation Emergency Exercise for SSES from Wk of 991115 to Wk of 001031 ML18040A9671999-01-29029 January 1999 Notifies That Util Implemented Severe Accident Mgt Strategy in Accordance with Ltr Dtd 950327.Emegency Plan Revs Which Were Required to Implement Strategy Were Submitted by Ltr Dtd 981125 ML18040A9651999-01-12012 January 1999 Submits Addl Info Re Proposed Amend 184 to License NPF-22 for ANFB-10 Critical Power Correlation & MCPR Safety Limits ML18030A1021998-12-16016 December 1998 Forwards Tables as Requested During 981202 Telcon Re Proposed Amend 184,dtd 980804,re ANFB-10 Critical Power Correlation & MCPR Safety Limits.Tables Provide Roadmap Identifying Applicability of References to TSs ML18030A4331998-11-25025 November 1998 Forwards Rev 29 to SSES Emergecny Plan.Changes Has Been Made Without Commission Approval as It Does Not Decrease Effectiveness of Plan & Plan as Changed Continues to Satisfy Applicable Requirements of App E to 10CFR50 ML18026A2941998-10-19019 October 1998 Forwards SSES ISI Outage Summary Rept for Unit 1 Tenth Refueling & Insp Outage ML18030A4321998-10-12012 October 1998 Forwards Rev 28 to SSES Emergency Plan, IAW Requirements of 10CFR50.54q.Change Is Summarized ML18030A1001998-10-12012 October 1998 Forwards Rev 27 to SSES Emergency Plan. Changes Become Effective Upon Implementation of Improved Tech Specs PLA-4993, Forwards Change Mm to SSES Physical Security Plan.Encl Withheld,Per 10CFR73.211998-10-12012 October 1998 Forwards Change Mm to SSES Physical Security Plan.Encl Withheld,Per 10CFR73.21 ML18030A4311998-09-29029 September 1998 Forwards Rev 27 & 28 to SSES Emergency Plan ML18030A0991998-09-0808 September 1998 Provides Response to Violations Noted in Insp Repts 50-387/98-08 & 50-388/98-08.Corrective Actions:Current Administrative Controls on Fuel Level in EDG Day Tanks Will Remain in Effect Until TS Change Is Approved IR 05000387/19980081998-09-0808 September 1998 Provides Response to Violations Noted in Insp Repts 50-387/98-08 & 50-388/98-08.Corrective Actions:Current Administrative Controls on Fuel Level in EDG Day Tanks Will Remain in Effect Until TS Change is Approved ML18026A4961998-08-31031 August 1998 Responds to NRC 980731 Ltr Re Violations Noted in Insp Repts 50-387/98-03 & 50-388/98-03.Corrective Actions:Procurement & Affected User Group Personnel Visited EDG Vendor Facilities to Appraise Vendor Work Practices & Discuss Expectations IR 05000387/19980031998-08-31031 August 1998 Responds to NRC 980731 Ltr Re Violations Noted in Insp Repts 50-387/98-03 & 50-388/98-03.Corrective Actions:Procurement & Affected User Group Personnel Visited EDG Vendor Facilities to Appraise Vendor Work Practices & Discuss Expectations ML18017A2181998-07-0808 July 1998 Forwards Final Version of SSES TS Implementing Improved Tech Specs of NUREG 1433.Implementation of Proposed Amend Is Predicated on NRC Issuance of Amends & Is Proposed to Not Exceed 90 Days from Date of Amend Issuance ML18030A4291998-07-0808 July 1998 Forwards Final Version of SSES TS Implementing Improved TS of NUREG-1433.Implementation of Proposed Amend Is Predicted on NRC Issuance of Amends & Proposed to Not Exceed 90 Days from Date of Amend Issue ML18026A2901998-06-0909 June 1998 Forwards Rev 26 to Emergency Plan IAW 10CFR50.54q.Summary of Changes Listed ML18026A2891998-05-22022 May 1998 Submits Withdrawal of Expedited Review/Approval of Tech Specs/Bases 3/4.3.7.11 & 3/4.11.2.6 & Response to Request for Addl Info Re Offgas Sys Mods ML18026A4941998-05-12012 May 1998 Responds to NRC Request to Resubmit Proposal to Change TS for Plant,Units 1 & 2,to Support Implementation of Improved TS & to Implement Provisions of GL 86-10 Re Relocation of Plant'S Fire Protection Program from TS to Another Document ML17159A2341998-03-30030 March 1998 Forwards LER 97-007-01,per 10CFR50.73(a)(2)(i)(B).Revised LER Submitted to Modify Previous Position W/Regards to Entry Into TS 3.0.3 for Event PLA-4865, Forwards Listed non-redacted Pp&L,Inc Corporate Auditing Repts.Informs That Document Contains Info to Be Withheld IAW 10CFR2.7901998-03-11011 March 1998 Forwards Listed non-redacted Pp&L,Inc Corporate Auditing Repts.Informs That Document Contains Info to Be Withheld IAW 10CFR2.790 PLA-4856, Forwards Proposed Amends to Licenses NPF-14 & NPF-22, Revising TS to Be Consistent w/NUREG-1433,rev 1, Std TS for GE Plants,Bwr 4. Proposed TS Consistent w/NUREG-1433,rev 1, Encl1998-03-0202 March 1998 Forwards Proposed Amends to Licenses NPF-14 & NPF-22, Revising TS to Be Consistent w/NUREG-1433,rev 1, Std TS for GE Plants,Bwr 4. Proposed TS Consistent w/NUREG-1433,rev 1, Encl ML17159A1781998-03-0202 March 1998 Forwards Proposed Amends 203 & 161 to License NPF-14 & NPF-22,revising Tech Specs to Be Consistent w/NUREG-1433,rev 1, Std Tech Specs for GE Plants,Bwr 4. PLA-4854, Provides Summary of Investigations That PP&L Performed in Response to Concerns Identified by Former Nuclear Plant Operator.Summary Requested by Cj Anderson on 9802131998-02-27027 February 1998 Provides Summary of Investigations That PP&L Performed in Response to Concerns Identified by Former Nuclear Plant Operator.Summary Requested by Cj Anderson on 980213 ML20216B7031998-02-22022 February 1998 Partially Deleted Ltr Requesting Copy of OI Rept on Plant, Unit 2,case 1-96-039 PLA-4851, Provides Info That Was Requested by Cj Anderson on 980213 Re Former Util Employee Concern on Radwaste Control Room Offgas Panel Alarm Testing1998-02-18018 February 1998 Provides Info That Was Requested by Cj Anderson on 980213 Re Former Util Employee Concern on Radwaste Control Room Offgas Panel Alarm Testing ML20203M5791998-02-10010 February 1998 Enters Appeal Due to Lack of Response to FOIA Request 97-473 ML18030A0971998-02-0202 February 1998 Forwards Proprietary Response to RAI Re Proposed License Amend 209 to TS Supporting Cycle 11 Reload.Proprietary Info Withheld,Per 10CFR2.790 ML20203G6071998-01-26026 January 1998 Forwards Redacted Version of Pp&L,Inc Corporate Auditings Interim Rept 739459-97,dtd 971015 & Affidavit Pursuant to 10CFR2.790 Justifying That Redacted Portions Be Withheld from Public Disclosure.Without Rept IR 05000387/19970031998-01-0606 January 1998 Provides Updated Response to Violations Noted in Insp Repts 50-387/97-03 & 50-388/97-03.Corrective Actions:Util Currently Scheduling Issuance of All Procedural Revs by End of First Quarter 1998 ML18017A2931998-01-0606 January 1998 Provides Responses to Improved TS Section 3.8 Per 970324 NRC Rai.Schedule 980628 for Improved TS Implementation. Submittal of Revised Specifications Is Planned for Jan 1998 ML18030A4071998-01-0606 January 1998 Provides Updated Response to Violations Noted in Insp Repts 50-387/97-03 & 50-388/97-03.Corrective Actions:Util Currently Scheduling Issuance of All Procedural Revs by End of First Quarter 1998 PLA-4828, Expresses Appreciation for Support Received by Former Project Manager C Poslusny1997-12-29029 December 1997 Expresses Appreciation for Support Received by Former Project Manager C Poslusny IR 05000387/19970041997-12-22022 December 1997 Resolves Commitments Made in Response to NOV Issued As Part of NRC Insp Repts 50-387/97-04 & 50-388/97-04 Dtd 970805. Proposed FSAR QA Program Description Changes,Reason for Changes & Basis Included for Approval ML18026A4901997-12-22022 December 1997 Resolves Commitments Made in Response to NOV Issued as Part of NRC Insp Repts 50-387/97-04 & 50-388/97-04 Dtd 970805. Proposed FSAR QA Program Description Changes,Reason for Changes & Basis Included for Approval ML20203M5741997-12-0505 December 1997 FOIA Request for Copy of Latest OI Rept on Susquehanna Ses Including All Exhibits & for Any Other Communication Between NRC & Susquehanna Ses/Pp&L PLA-4818, Forwards Redacted Version of Pp&L,Inc Corporate Auditings Rept 739459-1-97,dtd 971201 & Affidavit Pursuant to 10CFR2.790 Justifying That Redacted Portions Be Withheld from Public Disclosure.Without Rept1997-12-0404 December 1997 Forwards Redacted Version of Pp&L,Inc Corporate Auditings Rept 739459-1-97,dtd 971201 & Affidavit Pursuant to 10CFR2.790 Justifying That Redacted Portions Be Withheld from Public Disclosure.Without Rept 1999-09-08
[Table view] Category:UTILITY TO NRC
MONTHYEARML18026A3941990-09-0101 September 1990 Requests Waiver of Compliance from Tech Spec 3.8.1.1 to Evaluate Increase in Action from 72 H to 15 Days Re Ac Sources Based on 900829 Borescopic Insp of Emergency Diesel Generator ML17157A2741990-08-0808 August 1990 Forwards Topical Rept PL-NF-90-001, Application of Reactor Analysis Methods for BWR Design & Analysis. IR 05000387/19900801990-08-0303 August 1990 Responds to Violations Noted in Insp Repts 50-387/90-80 & 50-388/90-80.Corrective Actions:Util Conducted Operator Training on How to Implement Eops If Suppression Chamber Pressure Not Available ML18030A0741990-08-0303 August 1990 Responds to Violations Noted in Insp Repts 50-387/90-80 & 50-388/90-80.Corrective Actions:Util Conducted Operator Training on How to Implement EOPs If Suppression Chamber Pressure Not Available ML18026A2351990-07-0202 July 1990 Forwards Application for Proposed Amend 132 to License NPF-14,revising Tech Spec to Support Cycle 6 Reload ML18030A0721990-06-19019 June 1990 Forwards Rev 1 to SEA-EE-183, Evaluation of Unit 1 Computer Class 1E - Non-Class 1E Interfaces & Rev 1 to SEA-EE-184, Evaluation of Unit 1 Annunciator Class 1E - Non-Class 1E Interfaces. ML18026A3931990-06-0707 June 1990 Requests NRC Approval to Install Mod at Plant Determined to Constitute Unreviewed Safety Question When Evaluated.Util Will Implement Administrative Controls to Ensure Larger Min Vol Met for Diesel E Prior to Tech Spec Change ML18030A3671990-05-14014 May 1990 Forwards Proprietary Conclusions of Investigation Re Two False Negative Analytical Results from Two Blind Spike Urine Samples.Investigation Satisfactorily Evaluated Samples. Encl Withheld (Ref 10CFR2.790) ML20043A2461990-05-11011 May 1990 Forwards Draft of Proposed Decommissioning Financial Assurance Plan,Per 10CFR50.33 & 50.75,for Review.Telcon Scheduled for 900515 to Discuss Comments ML18030A0711990-03-19019 March 1990 Responds to Questions Delineated in 900131 Ltr Re Diesel Generator Events That Occurred During Sept & Oct 1989.Draft Procedures for Proposed Intake Air Temp Test Program Transmitted to NRC on 900205.Revised Procedures Encl ML18017A1871990-02-15015 February 1990 Forwards Books 1 & 2 to, Unit 2 Third Refueling & Insp Outage;Outage Summary Rept. IR 05000387/19890331990-02-0505 February 1990 Responds to NRC 900105 Ltr Re Violations Noted in Insp Repts 50-387/89-33 & 50-388/89-31.Corrective Actions:Rhr Svc Water Pump 2P506B Remains in Inoperable Status Until Cause of Deviation Determined & Condition Corrected ML18030A0701990-02-0505 February 1990 Responds to NRC 900105 Ltr Re Violations Noted in Insp Repts 50-387/89-33 & 50-388/89-31.Corrective Actions:Rhr Svc Water Pump 2P506B Remains in Inoperable Status Until Cause of Deviation Determined & Condition Corrected ML18040A9601990-02-0202 February 1990 Forwards Schedules That Provide Details of Tasks Required to Complete Activities Re Diesel Generators & Advises of Plan to Have Spare Parts on Site in Timely Manner to Support Each Diesel Insp ML20006B4501990-01-25025 January 1990 Forwards Preliminary Scope & Schedule for Security Upgrade Project.Encl Withheld (Ref 10CFR73.21) ML17156B6031990-01-25025 January 1990 Forwards NPDES Discharge Monitoring Rept for Dec 1989 & State of Pa,Dept of Environ Resources Monthly Facility Rept Form (01-112).Noncompliances for Zinc on Cooling Tower Blowdown on 891228 & for Missed Sample Noted ML18040B2671990-01-0505 January 1990 Forwards Rev 0 to SEA-CW-037, Analysis of B & C 1989 Diesels Failure. Rept Details Util Analysis of Overpressurization Incidents Which Occurred in Sept & Oct 1989 of Diesel Generators ML18040B2651989-11-27027 November 1989 Forwards Response to Generic Ltr 89-21.Table of USIs for Which Technical Resolution Has Been Achieved Encl ML19325F1991989-11-0909 November 1989 Responds to Generic Ltr 89-07, Power Reactor Safeguards Contingency Planning for Surface Vehicle Bombs. Util Has Developed & Issued Procedure Which Includes Safeguards Contingency Planning Using Approach Noted in Generic Ltr ML19325D7411989-10-19019 October 1989 Forwards Application for Amends 126 & 77 to Licenses NPF-14 & NPF-22,respectively,requesting Emergency Temporary Relief from Certain Requirements of Tech Specs 3.2.2 on One Time Basis for Period of 3 Months ML19325C3771989-10-11011 October 1989 Forwards Change DD to Physical Security Plan.Change Withheld (Ref 10CFR73.21) ML18040B2581989-10-0202 October 1989 Forwards Final Response to Request for Addl Info Re Generic Ltr 88-01, NRC Position on IGSCC in BWR Austenitic Stainless Steel Piping. Listed Items Included in Previous & Current Ref Responses ML18040A9441989-09-12012 September 1989 Responds to Remaining Questions Raised During NRC Insp of Training Programs.Training Procedure Re Technical Exam Bank Instrumentation & Control Training Exams.Health Physics Technicians Trained Re High Radiation Levels PLA-3251, Forwards Response to Regulatory Effectiveness Review Rept. Util Established Team to Evaluate Appropriate Scope for Planned Major Project to Upgrade Security.Scope of Project to Be Finalized & Approved in Nov 1989.Response Withheld1989-08-31031 August 1989 Forwards Response to Regulatory Effectiveness Review Rept. Util Established Team to Evaluate Appropriate Scope for Planned Major Project to Upgrade Security.Scope of Project to Be Finalized & Approved in Nov 1989.Response Withheld ML18040A9421989-08-22022 August 1989 Requests Concurrence W/Scheduling of 1990 Annual NRC Observed Emergency Preparedness Exercise at Plant on 900502. Concurrence Requested by 890930 ML18040B2531989-08-10010 August 1989 Discusses Insp of Operational Status of Emergency Preparedness Program.Susquehanna Review Committee 1987 & 1988 Emergency Plan Audits Encl W/Other Supporting Documentation ML20246A0191989-06-30030 June 1989 Submits Comments on Containment Performance Improvement Program (Cpi).Believes Program Will Be Generic Approach to Improving Containment Performance During Severe Accident PLA-3218, Submits Info Re Settlement Agreements for Discrimination Matters Arising Under Energy Reorganization Act of 1974. No Settlements Made Between Licensee & Any Employees in Section 210 Proceedings1989-06-27027 June 1989 Submits Info Re Settlement Agreements for Discrimination Matters Arising Under Energy Reorganization Act of 1974. No Settlements Made Between Licensee & Any Employees in Section 210 Proceedings ML18040B2501989-06-20020 June 1989 Forwards Summary Rept of Safety Evaluations Approved During 1988.Changes Include Backseating Control Box to Electrically Backset HV-202168 to Reduce Steam Leakage & Rerouting Condensate Supply Line to Main Condenser Keepfill PLA-3194, Forwards Change CC to Physical Security Plan.Change Withheld (Ref 10CFR73.21)1989-05-30030 May 1989 Forwards Change CC to Physical Security Plan.Change Withheld (Ref 10CFR73.21) ML18040A9301989-04-28028 April 1989 Responds to 890322 Request for Addl Info Re Plant Fire Protection Review Rept.Analysis of Circuits Having Potential for Being Impacted by Fire Resulting in Multiple High Impedence Faults Will Be Completed by Last Quarter 1989 ML18040B2441989-04-14014 April 1989 Forwards Application for Amends to Licenses NPF-14 & NPF-22, Resulting from Mods Performed to Essential Svc Water Sys,Per 10CFR50,App R,Consisting of Proposed Amends 23 & 70 PLA-3173, Forwards Change Bb to Physical Security Plan.Encl Withheld (Ref 10CFR73.21)1989-03-22022 March 1989 Forwards Change Bb to Physical Security Plan.Encl Withheld (Ref 10CFR73.21) ML18040A9271989-03-10010 March 1989 Forwards Rev 6 to ISI-T-100.0 for Unit 1 & Rev 3 to ISI-T-200.0 for Unit 2 Pump & Valve Inservice Insp Testing Program. ML18040A9261989-03-0707 March 1989 Discusses Util Position Re Completion & Implementation of NRC Requested Actions Specified in Suppl 1 to NRC Bulletin 88-007, Power Oscillations in Bwrs. ML17156B0131989-02-0202 February 1989 Forwards Proprietary Rept & Affidavit Supporting Proposed Amend 119 to License NPF-14 ML17156A9771988-12-15015 December 1988 Forwards Rev 11 to Susquehanna Units 1 & 2 Emergency Plan ML18040B2331988-11-22022 November 1988 Forwards Listed Addl Info Re Plant Fire Protection Review rept.W/16 Oversize Drawings ML17156A9211988-11-0909 November 1988 Forwards Proprietary GE Rept, Tech Spec Improvement Analysis for Reactor Protection Sys for Susquehanna Steam Electric Station,Units 1 & 2. Rept Withheld (Ref 10CFR2.790) ML18040A9111988-09-15015 September 1988 Informs That Mods Re Fire Barrier Upgrades,Hvac Fan Switches,Ct Secondaries & Raceway Wrapping Completed Except as Listed ML18040A9101988-08-10010 August 1988 Forwards Application for Amend to License NPF-14,extending Operation During Cycle 4 W/One Circulation Loop Out of Svc. Fee Paid ML18040B2221988-08-10010 August 1988 Responds to Generic Ltr 88-01, NRC Position on IGSCC in BWR Austenitic Stainless Steel Piping. Staff Position on Matls, Water Chemistry,Crack Evaluation & Repair Criteria & Insp Schedules Among Topics Addressed.Flaw Evaluations Encl ML18040B2201988-07-27027 July 1988 Forwards Comments to Each Specific SALP Category,Per 880707 Meeting W/Nrc.Presentations from Meeting Also Encl ML18040A9061988-07-21021 July 1988 Forwards GE Rept, Susquehanna Unit 1 CRD Housing Cap Screw Corrosion. Rept Completes Action on Item ML18040A9031988-07-19019 July 1988 Forwards Approved Version of Topical Rept PL-NF-87-001-A, Qualification of Steady State Core Physics Methods for BWR Design & Analysis, Per 880428 Ltr ML18040A9041988-07-19019 July 1988 Forwards Rev 39 to Updated FSAR for Susquehanna Steam Electric Station Units 1 & 2 Per 10CFR50.71 ML18040B2131988-06-24024 June 1988 Forwards 1987 Annual Rept for Allegheny Electric Cooperative,Inc ML18040A9021988-06-15015 June 1988 Provides Revised Response to NRC 871130 Ltr Re Violations Noted in Insp Repts 50-387/87-19 & 50-388/87-19.Corrective Actions:Incumbent Will Be Removed from Emergency Plan Position of Radiation Protection Coordinator PLA-3028, Responds to Suppl 1 to Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. No Revs to Design Review for Original Bulletin Required as Result of Suppl1988-05-31031 May 1988 Responds to Suppl 1 to Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. No Revs to Design Review for Original Bulletin Required as Result of Suppl ML18040A8691988-04-0606 April 1988 Forwards Application for Proposed Amends 110 & 61 to Licenses NPF-14 & NPF-22,respectively,revising Tech Specs Re Radiation Monitoring Instrumentation.Fee Paid 1990-09-01
[Table view] |
Text
REGULATORY I RMATION DISTRIBUTION SYS (RIDS)
'AOCESSION NBR:8206160242 DOC ~ DATE: 82/06/10 NOTARIZED: NO DOCKET FACIL:50"387 Susquehanna 'Steam Electric Station< Unit 1i Pennsylva 05000387 50-388 Susquehanna Steam "Electric Stations Unit 2< Pennsylva 05000388 AUTH'AME AUTHOR AFFILIATION CURTIS' ~ N ~ Pennsylvania Power 4 Light Co+
RHC IP. NaME RECIPIENT AFF ILIATION SCHNENCERgA ~ Licensing Branch "2
SUBJECT:
Forwards info in response to NUREG 073?iItem II.E.0,2 re containment vent 6purge valves'everal valves.do not yeet required closing time. Investigation underway. Info closes 'SER Item 80.
DISTRIBUTION CODE: A046S>>COPIES RECEIVED:LTR g ENCL Q SIZE TITLE: Response to NUREG '"0737/NUREG 0660 TMI Action Plan Rgmts (OL's)
NOTiES ~
RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL LIC BR ¹2 BC 01 -7 7 INTERNAL; ELD/HOSP 1 0 IE/DEP, DIR 33 1 1 IE/DEP EPDS 1 1 IE/OEP/EPLB 3 3 NRR/DE D IR 21 1 1 NRR/OE/ADCSE 22 1 1 NRR/DE/ADMQE 23 1 1 NRR/DHFS OIR 28 1 1 NRR/OHFS/DEPY29 1 NRR/DL,OIR 19 1 1 NRR/OL/ADL 16 1- 1 'NRR/DL/ADOR 15 1 1 NRR/OL/AOSA 17 1 1 NRR/OL/ORAB 18 3 3 NRR/OSI DIR 2Q 1 1 NRR/DSI/ADDPS25 1 1 NRR/DSI/ADRP 26 1 1 NRR/DSI/ADRS 27 1 1 NRR/DS I/AEB 1 1 NRR/DS I/ET'SB 1 1 NRR/DSI/RAB 1 1 NRR/DST D IR 30 1 1 AOGP 31 1 NRR/DST/AOT 32 1 1 EG FILE 00 1 1 RGN1 1 1 EXTERNAL: ACRS '34 10 10 FEMA REP DIV 1 I'NPOpJ ~ STARNES 1 LPDR 03 '2 2 NRC PDR 02 1 1 NSIC 05 1 1 NTIS 1 1
'TOTAL NUMBER OF COPIES REQUIRED LTTR 54 ENCL 53
lP 0
P A Aj N
~ 'I S,l I ]t' q ~ I f 1
Pennsylvania Power 8 Light Company Two North Ninth Street ~ Allentown, PA 18101 ~ 215 / 7705151 Norman W. Curtis Vice President-Engineering 8 Construction-Nuclear 215/ 770-5381 JUN 10 1982 Mr. A. Schwencer, Chief Licensing Branch No. 2 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 SUSQUEHANNA STEAM ELECTRIC STATION QUALIFICATION DOCUMENTATION FOR CONTAINMENT VENT AND PURGE VALVES ER 100450 FILE 841-12 Docket Nos. 50-387 PLA-1111 50-388
Dear Mr. Schwencer:
The enclosed documentation is provided in response to NUREG-0737, item II.E.4.2, part 6. We have committed to provide the enclosed documentation to substantiate that the con'tainment vent and purge isolation valves meet the interim qualification criteria to close within the technical specification limits.
This documentation completes our commitment and will allow closeout of item II.E .4.2 and SER open item number 84.
A complication has been found during testing of these valves. Several valves do not meet the required closing time. An investigation is currently underway to resolve this problem. We plan to correct the deficiency prior to fuel load or limit the valve open position to assure compliance with the technical specifications. If you have questions, please feel free to contact me.
Very truly yours, N. W. Curtis Vice President-Engineering 6 Construction-Nuclear DPM/mks cc: R. Perch 8206i60242 8206i0 PDR ADOCK 05000387 ~ i.'
PDR
TELE XE 312.844~ . TELIC 720424
[PRATT HENRY PHATT COMPAl. 4Y
( l '. <<ll iX'i <'ll<>'il)( ('l ill<> i'()I i'iili(1 ~X'~i('l}7H 401 SOLTH HIGHLANDS'Ei~E . AURORAe ILLINOIS 60507 May 20, 1982 Bechtel Power Corporation Fifty Beale Street P. 0. Box 3695 San Francisco, Calif. 94119 Attn; E. B. Poser Subj: Susquehanna Purge valve analysis Your P. 0. 8856-P-31-AC Pratt Order No. D-34933 Gentlemen:
In response to your May 7, 1982 letter to Mr. R. Nelson, we offer the following:
- l. Yes, the reports furnished for Susquehanna are very similar in format and content to those previously performed for other plants (and furnished to the NRC)..
2 6 3~ P in the bearing friction torque calculation represents hP, the differential pressure across the disc at any given disc angle as calculated during the LOCA flow event. Upstream pressure considers the pressure-time (drywell) curve furnished.
U, the sleeve bearing coefficient of friction equals
.25 for the bronze bearings furnished. This value identified in the appendix to A%PA C-504-80 (copy is attached for your reference) and is considered to be a higher value than typically expected in service.
However, for the sake of conservatism, Pratt has identified bearing friction torque in the reports but has not actually incorporated its value in our shaft stress calculations. That is, the highest stressed section of the shaft is the top stub shaft between the top bearing and the disc, and that section sees the maximum fluid dynamic torque minus the top bearing friction torque. In your reports we have used the dynamic torque value alone.
~ se eo roe AIllStBd
~ NO1I ~ T1 ~ 8
~
Bechtel Power Corp.
May 20, 1982 page The basis for our fluid dynamic torque calculation
.and our statement that maximum dynamic torque occurs when initial sonic flow occurs coincident with 68o-72o disc angles is as follows:
3 TD= CTD hP is the common equation used for dynamic torque calculations for flow through a butterfly valve (again reference the appendix to AWWA C-504-80). In order for Pratt to evaluate our empirical data we began plotting CT, torque coefficient vs P2/P , pressure ratio, on log-log paper. What we learned is tlat when CT above is substituted by C 2, where C' C hP/P2 then the resultant curves are upward an5 dowKward straight lines peaked at the critical sonic pressure ratio. The highest peaks were obtained at 68o for. asymmetric disc models and 72o for symmetric discs. Therefore, it convenience in plotting that we have elected to express is for this our torque equation on this absolute downstream pressure basis.
- 6. The 19-7 psia backpressure condition was an earlier assumption made by Pratt as a typical downstream pressure. In your reports, this assumption was not used as Pratt could not qualify its value. Instead, the downstream pressure was selected by considering the valve closure time and pressure-time curves furnished, such that the downstream pressure at 68o would yield the critical ratio for the air-steam mixture. This is considered to be the worst case approach.
7a. The steam/air mixture with 1.4 lbs. steam per 1 lb. of air
.was an assumption made by Pratt as a typical condition.
Variations on this mass ratio do not have significant impact on torques.
7b. The seating factor is the coefficient of seating or unseating torque as per the appendix of AWWA C-504.
by tests in our lab.
It is determined 7c ~ The outlet pressure (P ) refers to the new value of down-stream pressure identified in response number 6 above.
7d. Flow as well as 'torque coefficients were determined by Pratt in our model testing. The values of mass flow rates presented are intended as reference data for approximate information only.
~ ee AlllAd ot.ao INOV ~ TSI
~~
1 Bechtel Power Corporation May 20, 1982 page 7e. Hub seal torque refers to the frictional torque at the disc hub to body interface on certain on-center disc designs previously used. The model 1200 valves analyzed do not have hub seals and this value does not apply.
7f. In the Susquehanna valves analyzed, Pratt has'considered the effect of a 90 elbow, out of plane with respect to the valve shaft, immediately .upstream of the valve as the worst case approach. -This elbow effect is folded into the torque coefficients used.
- 8. The starting, or delay, times were defined by >echtel as a minimum of .1 second and a maximum of 5 seconds. The .2 second figure used for the 6" valve appears to be uncon-servative as the maximum delay time would have resulted in a higher upstream pressure. However, maximum dynamic torque for that size valve is so low that it appears that the the variance in starting times will not adversely affect the conclusions made in that report.
The 30 second, 17 second, and 2.8 second closing times were selected from our assembly and test reports which have recorded actual closing times for those valves as measured in our shop under no-flow conditions. They are not the minimum possible times and do not relate to duct pressure.
They represent, the only known times that Pratt could confirm as the original order did not specify opening or closing times.
- 9. The appropriate closing times should be determined by the owner. Ne can and do hereby state that controls on the actuators are revised such that a valve if the pneumatic closing time of 5 seconds or less is achieved, that the result of the reports furnished for Susquehanna will not be adversely effected.
He trust this information will be satisfactory to your needs.
Very truly yours,
- Manager, Contract 6 Proposal Engineering TJW:pst Attach" A. K. Nilson
'C:
R, D, Nelson SLIAStBd
,R. N. Kaza ~ <<e oo ~ >so IIOOQOt1I ~ ~
12 BUBBER.SEATILD BUTTI!Bl I.Y VALVES AI'I'ENI)IX 13 "
The upper surface of the valve disc may make special provisions to pre- 4 Section 6-Mariting and Shipping shall bc visible and shall hc covered vent leakage past the seats. No part Sec. 6.1 Marking them for shipinent so that no damage with a pool of water at 0 psi pressure. of the valve or disc shall be perma-owing to the manufacturer's negli-The length of test shall bc at least 5 nently deformed by the test. It is the hfarkings for otlier than wafer gence will occur in handling or transit.
min., and there shall lie no indication purpow of this section t<i provide valves sliall lie cast on the Iio<ly or All caviti<s shall lie drained of water.
of leakage past the valve disc (visible evidciice of the adequacy of each basic shall lie on cast plates with rais<~i Valves larger tlian 36 in. in size shall in the form of bubbles in the water type offered by a manufacturer to letters attached to the valve liody. lie lwilted or otherwise fastened to pool on top of the disc) during the perform under design pressures within The markings shall show Ihe valve ski<Is in such a manner as to preclu<le test period. As an alternative to this the applicable rating for a sufficient size, manufacturer, class, and year of damage in subsequent haiidling. All test procedure, Class 150A or 1508 number of operations simulating a manufacture. The minimum size of unpainted steel- and iron.niacliinc<l valves may be given a 150.psi hydro- full service life. The adequacy is to letters shall be l in. for valves 3-12 surfaces shall be coated with a pro-static test. During the test, the valves be proved by tests, made on valves in. in diameter and f in. for valves tective slushing conipound. I ull.face shall be droptight. selected to represent each basic type larger than 12 in. in diameter. Cor- Range protectors of waterproof ply-of seat design of a size within each rosion-resistant plates attached to the wood or weather-rcsistant pressboard, applicable group in Table 6 and in a body and with }-in. etched or en- of a least the diameter of the Range Sec. 5.4 Hydrostatic Teat pressure class or classes equal to or graved letters may be used for mark- Oil, shall be fastened to each llange All valve bodies shall be subjected ing wafer valves. to protect lioth it and the valve to an internal hydrostatic pressure TABLE 6 interior. Small valves may lie fully equivalent to two times the specified Sec. 64 Shlpplng 7'stt Cydst Rc<p<iral packaged at the manufacturer's op-shutoff pressure. During the hydro- Valves shall be complete in all tion. Components shipped unattached static test, there shall lie no leakage No d Csdie respects when shipped. The manu- shall be adequately protected and through the metal, the end joints or facturer shall use care in preparing identified for correct field assembly.
the shaft seal, nor shall any part be permanently deformed. The time duration of the hydrostatic test shall 3-20 2I-I2 IS-72 I0,000 1,000 0 'PPENMX be sufficicnt to allow visual examina- Method for Calculating Torques Required tion for leakage and shall be at least to Operate ButterQy Valves min. for valves 8 in. and smaller. greater than the valves being pur-1 chased. ~ The required number of This apprwdi>> is for lw/orw<otlow owly aat is wol a port o/ rfIVII'A CSOf.
3 min. for valves 10 in. through 20 cycles appears in Table 6. Every in. and 10 min. for valves 24 in. and cycle shall consist of applying the rubber seat friction when the valve larger. The following factors affect the differcntial pressure to the disc in the disc is being seated or. unseated.
closed position, then opening the valve torque required to operate rubber- 2. Boaring friclion Iorqt<o. This is Sec. 5.5 Proofs-Desiga Tests (which will relieve the pressure) to the seated butterfly valves:
the torque required to overcome the wide-open position and then closing friction between the v<<ive shaft and Upon request, the manufacturer the disc. The valve shall be drop-
- l. Valve diaineter shall furnish certified copies of the 2. Shaft diameter the shaft bearings.
tight under the rated pressure dif- 3. Bearing friction coelhcie<<t 3. Dynamic lorq<<o. This is the reports covering the tests. One proto- ferntial upon completion of the cycle type valve of each size and class of
- 4. Type ol seat and seat material torque developed by the disc on the test. 5. Shutoff pressure valve shaft because of the difference a manufacturer's design shall be 6. Velocity hydrostatically tested with twice the in pressures that exist across thc faces
- 7. Type of disc of the disc as a result of Row.
specified shutoff pressure applied to Sec. 5.6 Relectloiz 8. System head characteristics one side of the disc and zero pressure 4. Hydroslalic lorq<<c. This is the
- 9. Piping arrangement on the other side. The test is to be Any butterfly valve or part that torque caused by the diR'erence in made in each direction across the the inspector may condemn as not static head of water on the valve disc These factors combine to make up disc, and, in the case of Ranged conforming to the requirements of above and below the valve shaft when the following four classes of torques the shaft is horizontal. It is added to valves, the v'alve body shall bc this standard shall be made sa'tis-factory or shall be rejected and 1. Scaling or t<nssaling lorqt<c. This or subtracted from the seating or un-bolted to a flanged test head. Under replaced. is the torque tequired to overcome the seating torque.
the hydrostatic test, the manufacturer
14 RIIIIlllIt SRATRI) IIUTTI III:I.Y VAI.VI:.8 AI I I. It I)Ib 15 Operator torques can be calcu1ated using the following formulas:
Te ~ (Ts +
T, a (1.2 7'e + Ts)
Ts + Ts)
(6)
(7)
A ol reservoir, and (2) where the elevation the energy gradient is variable, de-such that head loss varies as the square of the velocity and the head T, Cef)s (1) pending on flow, as in the case ol a source is a constant elevation, a Cc 7's ~ 4 71 f Ec d P (2)
Equation 6 is solved by using the i centrifugal puinp. Jt should be noted value of 22 with valve fullyopen, and maximmn prcssure drop across the that all heads arc measured to energy a C, value o(85 Ts Csf)e P (3) valve with the disc in tlic c1oscd posi c gradients and thcrcfore must include
~ Problcsstt EVhat is the maximum V
Ts CrVP a
~ 3.06 f)c e
O.TSSf)e (4)
(5) tion; Eq 7 must bc solved succcssivcly for several values of vc1ocity to deter-mine the maxiinum combination ol dynamic and bearing torques. The velocity head, if any. Thc ordinate difference between tlie head source curve (or line) and the system head curve represents thc total head loss operator torque?
Solttfiottl The velocity and pressure drop with the valve fullyopen will be:
in which: head loss that will occur across tile valve for each value of velocity can (tota1 dynaniic head) across the valve at any velocity; therefore, the pres.
254 0.785 X 4 5t
- Ps T, ea seating or unseating torque, only bc determined by considering the sure drop across the valve correspond-in foot-pounds of the entire system. 'ydraulics ing to each value ol velocity can be P ea
/16%a ea 0.53 psi (Eq 5)
Ts ea bearing pounds torque, in foot- Figure A 1 illustrates a graphic determined and tabulated. ( )
(CJ method of determining the pressure The coeflicient, Cs, corresponding Td ~ dynamic torque, in foot- drop across a valve lor any velocity Because head loss varies as the square to each value of velocity can be cal-pounds between the valvewpen and closed culated by means of Eq 5, and the of the velocity and the head source is Ta ~ hydrostatic torque, in loot- position for two typical conditions: a constant elevation, the pressure corresponding coefficient, Cs, deter-poiinds (1) where the elevation ol the energy mined by using thc valve character- drop across the valve corresponding Q ae flow, in cubic feet per second gradient at the source of supply is istic curves showing the relationship to any velocity will be:
V ac velocity, in feet per second constant, as in the case of a large of Cc, Cs, and disc angle. Thc dy- 0.53) Vt D ~ diameter of valve, in feet namic torque, Td, and the correspond-(25 d ~ diameter ol shaft, in inches ing bearing torque, Ts, can then be 16t P ~ pressure drop across valve, calculated using Eq 3 and 2, respec- . ~ 25 0.0956 Vt in pounds pcr square inch tively.
oC, ~ coeflicient ol seating or un- Heed loss Iveiso Wde Osee) The following is an example illus- For any pressure drop across the seating torque trating thc method for calculating the valve, the bearing torque will be:
~ oCs ea coefficient ofdynaniic torque operating torque required for a valve. Te ae 4.71 Cs ac coeflicient ol flow Girctt: A 54-in. valve, a maximum X 4.5' 4.875 X 0.25 P (Eq 2).
f ~ bearing friction coefficient discharge rate, Q, with the valve full (usually assumed to be 0.25 X open, of 254 cfs, a maximum shutoff lor metal bearings) pressure across the valve of 25 psi, a Ts ~ 116.2P shaft diameter of 4$ in., valve shaft The required operator torque, T is a horixonta1, a system characteristic TabIe Al gives the various factors determined from the higher value Ssslea iieed loss I given by the two formulas:t uscsevoa oi teesss Csedacs Reosdsed ei TABLE Al SooNe So Sceadeia Veiecdr S) Factors fssdirotsd for Vsloritiss al l.ft lsstsesols Frost Sfaziauas Velocity The relationship of Ce, Cr. and disc angle Ssssea Heed loss varies depending upon the shape ol the disc Sleeeeea Vcsesor nea Srehe acde Ossa) and how it is mounted on the shaft. 'Char Y acteristic curves showing this relalionthip Decaa Ise p re and lhc value ol C, may be obtained from the Ce t4re re~i.tre osl Jtdt valve manufacturer. The values ol these vs loess I t) coetfscients should not be applied indiscsimi- Flg. kl. Bslattost Between Velodty and 16 0.53 22.00 naidy when calculating torque sequiremerits Psessate T)sop tn Buttetdy Valves 1$ 3.49 S.03 15.12 4,509 4ST $ ,296 for operation ol valves produced by another 14 6.26 5.59 9.36 $ ,339 873 6,'212 malsufaclusef. Tlr lfpars ittssstrotss a proPlic nsrtlod for d.d4 437 7.49 6,034 1,233 7,267 f Use lhe plus value for Td <<ben calculating *tsesiisiap prrssssrr efrosss across a t>>fos 11.23 3.5S 6.19 6,334 1,566 7,900 opening torque and lhe negative value <<ben sssssfsr tls tts>> conditiosss cfrscnbrd fss tbs 11 13.43 $ 33 6/23 l,d73 S,396 caksdating dosing torque., kst. 10 1$ .44 4.ld S,SSI 2.1$ 3 S,034 4 ~
Beohtel Power Corporation Enginoere-Coretructors
)H RKPI.Y PNASI RE4
"'i0 scale Street IU 166SO San <<enceco. Cetifornla Mell Iddreeer PO. 8ox 3M5, San Francisco, CA 94419 y;..( x "20167255 NCo Ti Ma Crimninsg Jr,
~ Pennsylvania Brwer and Light catpany P 0. Box 1870 Allentown, Pennsylvania 18105 Attention! W. Rhodes Sub)ect: Susquehanna Steam Electric Station Qrd.ts 1 and 2 Job 8856 Containnent e Valve Anal is The following is a axaplete reply to your letter No. PLB-14202 dated Merch Z9> 1982, our corresponding DocNttent Contxol No. '162703.
This is to advise you of the status of the ccntaimrant purge valve operability analysis by Henry Pratt Co. (P.O. 8856-P-31).
Ne have reviewed the reports subttitted by Pratt for the three valve si2es. These reports indicate that the valves are qualified for the .
closure tines contained in the Techical Specification to meet the MRC's interim position. Gctttments have been generated for Pratt's resolution. The amnents are clarifying/explanatory & nature intended to provide a nnre complete report and do not identify any eries in the subtd.tted material. ln a discussion with Pratt, we understand that Pratt has discussed, in a general manner, the bases for their torque calculations and that reports of a similar fovnat and level of detail have been prepared for other utilities and suhnitted, apparently successfully< to the NRC. On the basis of the above, we have no reason to believe that the reports are unacceptable and do not believe that the resolution of the amounts is necessary prior to suhnittal to the NBC to close out the SER open item.
Pratt's responses to the eeaeents are to be telempied to us by May'21.
Copies of the reports have been transmitted previously to your J, Agnew.
Ocetaf.went Pmqe Valve Analysis fig Corporation Paae 2 Bechtellower t:.;.f @ "20l67255
%e are currently investigatin9 the modifications required in order for the valves, to be fully qualified (i.e., 5 second closure t~)<
which is required hy the first refueling outage.
We wQl keep you closely infaaned of the status of this issue.
Very truly yours<
E. B. Poser project Engineer
,Written Response Req'd! No JB/(Ã)/cas cc: J, Agnew (PAL)
bcc: R. Parekh J. Saame D. Crosby A. Daily ID 7 '02016 581 7 Henry Pratt Qxpany 401 South Highland Avenue Aurora, Illinois 60507 Attention: Mr. R. Nelson
Subject:
Susquehanna Stean Electric Station Units 1 and 2 Job 8856 Contairxnent Isolatio+Purge Valve Anal is P.O. 8856-P-31-AC Gentlemen:
Ne have reviewed the subject analysis and have. the following canments which are generic to all three size valves.
Has the torque calculation m thod in the Henry Pratt's analysis been applied in the same form to other plants (in addition to SSES) 2
- 2. &at does the pressure differential, P, in the bearing friction torque calculations exactly stand for2 In. other mrds, what are the locations which are selected to determine this pressure differential? How are the pressure at these selected locations calculated fran the drywell pressures time history?
- 3. Also in the bearing friction torque calculation, what is the physical significance of U, designated in the Henry Pratt's analysis as bearing coefficient of friction? Nhat is its value? Has the expressioin of this quantity been verified against any aeasurerent? If yes, please provide references.
- 4. Por the fluid dynanic torque calculation, please provide references which delineate the analytical background of the hy9rodynanic torque equations and their canpatibility with measurements.
- 5. Please explain the arguments behind the conclusive statement on page 5 in the Henry Pratt analysis that says that "the maximum dynanic torque occurs when initial sonic flow occurs coincident with a disc angle of 72'symmetric) or 68 (asynmetrxc) fran the fully closed position."
R. Nelson
- 6. $ hat is the justification for stipulating that backpressure of 19.7-psia can be assed through out valve closing cycle?
Has this stipulation used in the analysis?
- 7. In the computer output, scae of the quantities are either not clear or not mll-defined. Specifically, 7-a. Is the mass ratio of saturated stean to air which equals 1.4 to 1 an assunption?
7-b. Mat is the aeaning of seating factor which has the value of 15?
7-c. Mat does the outlet pressure (P 6) refer to?
7-d. How does the Henry Pratt's analysis determine the mass flow rates, CB4 and S(XÃ?
7-e. Shat does the hA seal torque mean? Hmr is it determined?
7-f. How are the effects of elbows close to the valve accounted for?
- 8. 9he starting times for the analysis are 5 seconds for both the 24" and 18" valves but is 0.2 second for the 6" valve. Please explain the reasons for the difference in the starting times.
'3he closure tines appear to be 30 seconds, 17 seconds and 2.8 seconds for the 24" < 18" and 6" valve sizes, respectively.
Aee these the minima possible closure times? Do these closure times depend on the pressure in the duct?
R. Nelson gg 7'0201658
- 9. Please include in each Conclusion Section the appropriate closing tim s of the valves. Also include a statement to the effect that by changing the solenoid valve on the operator so that the valves close in less than 5 seconds, that the fast closure of the valve will not effect the result of the reports.
Very truly yours,.
E. B. Poser Project Engineer Written Response Required: Yes Date Due: Nay 14, 1982 Fuel Zaad Impact: Yes JS/MD:sla
~ cc: E. W. bhad . (PT) Grp. Resp.
Coda PE51/4-2 Orlo.
Gr . Ldr.
Gr . Su vr.