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Category:OPERATING LICENSES-APPLIATION TO AMEND-RENEW EXISTING
MONTHYEARPY-CEI-NRR-2427, Application for Amend to License NPF-58,deleting License Condition 2.C.10 Re Controls Over Containment Air Locks During Plant Outages & Clarifying License Condition 2.F Re Reporting Requirements of TS & EPP Violations1999-09-14014 September 1999 Application for Amend to License NPF-58,deleting License Condition 2.C.10 Re Controls Over Containment Air Locks During Plant Outages & Clarifying License Condition 2.F Re Reporting Requirements of TS & EPP Violations PY-CEI-NRR-2406, Application for Amend to License NPF-58,eliminating Requirement in EPP to Sample Lake Erie Sediment in Perry & Eastlake Plant Area for Corbicula.Summary & Description of Change Is Encl1999-09-0909 September 1999 Application for Amend to License NPF-58,eliminating Requirement in EPP to Sample Lake Erie Sediment in Perry & Eastlake Plant Area for Corbicula.Summary & Description of Change Is Encl PY-CEI-NRR-2430, Application for Amend to License NPF-58,revising Allowables Values for CST Low Water Level Limits from Greater than or Equal to 59,700 Gallons to Greater than or Equal to 90,300 Gallons1999-09-0909 September 1999 Application for Amend to License NPF-58,revising Allowables Values for CST Low Water Level Limits from Greater than or Equal to 59,700 Gallons to Greater than or Equal to 90,300 Gallons PY-CEI-NRR-2420, Application for Amend to License NPF-58,increasing Present 100% Authorized Rated Thermal Power Level of 3579 Megawatts Thermal to 3758 Megawatts Thermal.Proprietary SAR Encl. Proprietary SAR Withheld,Per 10CFR2.790(a)(4)1999-09-0909 September 1999 Application for Amend to License NPF-58,increasing Present 100% Authorized Rated Thermal Power Level of 3579 Megawatts Thermal to 3758 Megawatts Thermal.Proprietary SAR Encl. Proprietary SAR Withheld,Per 10CFR2.790(a)(4) PY-CEI-NRR-2418, Application for Amend to License NPF-58,incorporating Addl Option Into TS 3.9.1 Required Actions When Refueling Interlocks Are Inoperable1999-08-0404 August 1999 Application for Amend to License NPF-58,incorporating Addl Option Into TS 3.9.1 Required Actions When Refueling Interlocks Are Inoperable PY-CEI-NRR-2398, Application for Amend to License NPF-58,changing SRs as Identified to Support Implementation of 24-month Operating Cycle at Pnpp1999-06-17017 June 1999 Application for Amend to License NPF-58,changing SRs as Identified to Support Implementation of 24-month Operating Cycle at Pnpp ML20206F5971999-05-0505 May 1999 Application for Amend to License NPF-58,authorizing CEI to Possess Dl 13.74% Undivided Ownership Interest in Pnpp PY-CEI-NRR-2362, Application for Amend to License NPF-58,proposing Change in Plant USAR by Incorporating leak-off Line in RHR Sys, Which Will Significantly Reduce Collective Dose to Plant Operations Personnel.Annotated USAR Pages,Encl1999-03-17017 March 1999 Application for Amend to License NPF-58,proposing Change in Plant USAR by Incorporating leak-off Line in RHR Sys, Which Will Significantly Reduce Collective Dose to Plant Operations Personnel.Annotated USAR Pages,Encl PY-CEI-NRR-2373, Application for Amend to License NPF-58,correcting Typos Found in TS Table 3.3.6.1-11999-03-15015 March 1999 Application for Amend to License NPF-58,correcting Typos Found in TS Table 3.3.6.1-1 PY-CEI-NRR-2359, Suppl Application for Amend to License NPF-58,involving Rev of Main Steam Line Leakage Requirements & Elimination of Main Steam Isolation Valve Leakage Control Sys.Proprietary Calculations Encl.Proprietary Encls Withheld1999-01-18018 January 1999 Suppl Application for Amend to License NPF-58,involving Rev of Main Steam Line Leakage Requirements & Elimination of Main Steam Isolation Valve Leakage Control Sys.Proprietary Calculations Encl.Proprietary Encls Withheld PY-CEI-NRR-2352, Suppl to 980909 LAR to License NPF-58,improving Licensing & Design Basis for Isolation of Feedwater Penetrations, Including Sensitivity Study Performed to Examine Radiological Significance of Leakage Through FW Sys Cvs1999-01-0606 January 1999 Suppl to 980909 LAR to License NPF-58,improving Licensing & Design Basis for Isolation of Feedwater Penetrations, Including Sensitivity Study Performed to Examine Radiological Significance of Leakage Through FW Sys Cvs PY-CEI-NRR-2325, Application for Amend to License NPF-58,applying Addl Conservatism by Modifying MCPR Safety Limit Values,As Calculated by Ge.Proprietary Addl Info Re 1.09 Cycle Specific Slmcpr,Encl.Proprietary Info Withheld1998-10-27027 October 1998 Application for Amend to License NPF-58,applying Addl Conservatism by Modifying MCPR Safety Limit Values,As Calculated by Ge.Proprietary Addl Info Re 1.09 Cycle Specific Slmcpr,Encl.Proprietary Info Withheld PY-CEI-NRR-2322, Application for Amend to License NPF-58,stipulating That Water Leakage from Feedwater motor-operated CIVs Will Be Added Into Primary Coolant Sources Outside of Containment Program & Valves Need Not Be Included in Test Program1998-09-0909 September 1998 Application for Amend to License NPF-58,stipulating That Water Leakage from Feedwater motor-operated CIVs Will Be Added Into Primary Coolant Sources Outside of Containment Program & Valves Need Not Be Included in Test Program PY-CEI-NRR-2319, Application for Amend to License NPF-58,permitting EDG TS Action Completion Time of Up to 14 Days for Div 1 or 2 EDG & Allow Performance of EDG 24-hour TS SR Test in Modes 1 & 21998-09-0303 September 1998 Application for Amend to License NPF-58,permitting EDG TS Action Completion Time of Up to 14 Days for Div 1 or 2 EDG & Allow Performance of EDG 24-hour TS SR Test in Modes 1 & 2 PY-CEI-NRR-2298, Application for Amend to License NPF-58,increasing Present Div 3 DG Fuel Oil Level Requirements to Account for Rounding Error in Calculation & Unusable Vol Due to Vortex Formation at Eductor Suction Nozzles Located in Fuel Oil Storag1998-09-0303 September 1998 Application for Amend to License NPF-58,increasing Present Div 3 DG Fuel Oil Level Requirements to Account for Rounding Error in Calculation & Unusable Vol Due to Vortex Formation at Eductor Suction Nozzles Located in Fuel Oil Storage Tank PY-CEI-NRR-2300, Application for Amend to License NPF-58,allowing Blind Flange in Inclined Fuel Transfer Sys (Ifts) Containment Penetration to Be Removed While Primary Containment Is Required to Be Operable1998-08-31031 August 1998 Application for Amend to License NPF-58,allowing Blind Flange in Inclined Fuel Transfer Sys (Ifts) Containment Penetration to Be Removed While Primary Containment Is Required to Be Operable PY-CEI-NRR-2299, Supplemental Application for Amend to License NPF-58, Revising MSL Leakage Requirements & Eliminating Msli Valve Leakage Control Sys.Proprietary & non-proprietary Rev 1 to Calculation Psat 08401T.03,encl.Proprietary Info Withheld1998-07-22022 July 1998 Supplemental Application for Amend to License NPF-58, Revising MSL Leakage Requirements & Eliminating Msli Valve Leakage Control Sys.Proprietary & non-proprietary Rev 1 to Calculation Psat 08401T.03,encl.Proprietary Info Withheld ML20151P1891998-07-13013 July 1998 Application for Amend to License NPF-58,revising Safety Setpoint Requirements for Srv.Proprietary Info & Affidavit Are Contained in Attachment 5.Proprietary Info Withheld PY-CEI-NRR-2295, Application for Amend to License NPF-58,revising TS 3.1.7, Standby Liquid Control Sys to Increase Boron Concentration in Standby Liquid Control Sys for Cycle 8 Fuel Design & to Provide Margin for Future Cycles as Required1998-06-30030 June 1998 Application for Amend to License NPF-58,revising TS 3.1.7, Standby Liquid Control Sys to Increase Boron Concentration in Standby Liquid Control Sys for Cycle 8 Fuel Design & to Provide Margin for Future Cycles as Required ML20236H6931998-06-30030 June 1998 Application for Amend to License NPF-58,transferring Operating Authority for Pnpp from Ceic & Centerior Svc Co to New Operating Company Named Firstenergy Nuclear Operating Co.Marked Up License,Safety & Environ Assessments,Included PY-CEI-NRR-2245, Application for Amend to License NPF-58,revising TS 3.8.1, AC Sources - Operating, to Be Consistent W/Recommendations in GL 94-01, Removal of Accelerated Testing & Special Reporting Requirements for Edgs1997-12-23023 December 1997 Application for Amend to License NPF-58,revising TS 3.8.1, AC Sources - Operating, to Be Consistent W/Recommendations in GL 94-01, Removal of Accelerated Testing & Special Reporting Requirements for Edgs PY-CEI-NRR-2230, Application for Amend to License NPF-58,incorporating Temp Control Valves & Associated Bypass Lines Around Emergency Closed Cooling Sys Heat Exchangers1997-10-22022 October 1997 Application for Amend to License NPF-58,incorporating Temp Control Valves & Associated Bypass Lines Around Emergency Closed Cooling Sys Heat Exchangers PY-CEI-NRR-2207, Application for Amend to License NPF-58,revising TS 5.2.2.e, Organization-Unit Staff, by Removing Ref to NRC Policy Statement on Working Hours1997-09-0808 September 1997 Application for Amend to License NPF-58,revising TS 5.2.2.e, Organization-Unit Staff, by Removing Ref to NRC Policy Statement on Working Hours PY-CEI-NRR-2206, Application for Amend to License NPF-58,revising Pressure- Temp Limits,Per Reactor Vessel Matl Surveillance Program Requirements Contained in App H of 10CFR50.901997-08-28028 August 1997 Application for Amend to License NPF-58,revising Pressure- Temp Limits,Per Reactor Vessel Matl Surveillance Program Requirements Contained in App H of 10CFR50.90 ML20217F5751997-07-28028 July 1997 Application for Amends to Licenses DPR-66,NPF-73 & NPF-58, Authorizing Holders to Possess Beaver Valley Power Station, Unit 1 & Authorizes Duquesne Light to Use & Operate Beaver Valley Unit 1 in Accordance W/Procedures PY-CEI-NRR-2164, Application for Amend to License NPF-58,revising Existing Exception to LCO 3.0.4 as Applies to LCO 3.6.1.9 for MSIV Leakage Control Sys1997-05-0202 May 1997 Application for Amend to License NPF-58,revising Existing Exception to LCO 3.0.4 as Applies to LCO 3.6.1.9 for MSIV Leakage Control Sys PY-CEI-NRR-2165, Application for Amend to License NPF-58,revising Tech Specs Surveillance Requirement for MSIV Leakage Rate Acceptance Criteria1997-05-0202 May 1997 Application for Amend to License NPF-58,revising Tech Specs Surveillance Requirement for MSIV Leakage Rate Acceptance Criteria PY-CEI-NRR-2155, Application for Amend to License NPF-58,revising TS Surveillance Requirements 3.9.1.1 & 3.9.2.2,extending SR Frequency on Refueling Equipment & one-rod-out Interlocks1997-04-0909 April 1997 Application for Amend to License NPF-58,revising TS Surveillance Requirements 3.9.1.1 & 3.9.2.2,extending SR Frequency on Refueling Equipment & one-rod-out Interlocks PY-CEI-NRR-2133, Application for Amend to License NPF-58,requesting Implementation of App J,Option B,Performance-based Primary Containment Leakage Rate Testing Program for Type A,B & C Leak Rate Tests1997-01-31031 January 1997 Application for Amend to License NPF-58,requesting Implementation of App J,Option B,Performance-based Primary Containment Leakage Rate Testing Program for Type A,B & C Leak Rate Tests ML20132C7601996-12-13013 December 1996 Application for Amend to License NPF-58,authorizing Transfers of Control PY-CEI-NRR-2104, Application for Amend to License NPF-58,modifying MCPR Reactor Core Safety Limit Contained in TS 2.1.1.21996-10-24024 October 1996 Application for Amend to License NPF-58,modifying MCPR Reactor Core Safety Limit Contained in TS 2.1.1.2 ML20117E7821996-08-27027 August 1996 Application for Amend to License NPF-58,revising MSL Leakage Requirements & Eliminating MSIV Leakage Control Sys. Attachment 7 Provides Proprietary Dose Calculations. Attachment 7 Withheld PY-CEI-NRR-1999, Application for Amend to License NPF-58,revising Improved Tech Specs.Changes Either Administrative in Nature or Reflect Minor Technical Errors Discovered During Implementation Process1996-04-26026 April 1996 Application for Amend to License NPF-58,revising Improved Tech Specs.Changes Either Administrative in Nature or Reflect Minor Technical Errors Discovered During Implementation Process PY-CEI-NRR-2030, Application for Amend to License NPF-58 Re Drywell Personnel Air Lock Shield Door Analyses1996-02-27027 February 1996 Application for Amend to License NPF-58 Re Drywell Personnel Air Lock Shield Door Analyses PY-CEI-NRR-2027, Application for Amend to License NPF-58,changing TS to Reflect Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 61996-02-17017 February 1996 Application for Amend to License NPF-58,changing TS to Reflect Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 6 PY-CEI-NRR-2007, Application for Amend to License NPF-58,revising TS Requirements for Drywell Leak Rate Testing1996-01-16016 January 1996 Application for Amend to License NPF-58,revising TS Requirements for Drywell Leak Rate Testing PY-CEI-NRR-2013, Application for Amend to License NPF-58,requesting one-time Surveillance Interval Extension to Support Current Schedule for Refueling Outage 5,scheduled to Begin 9601271996-01-10010 January 1996 Application for Amend to License NPF-58,requesting one-time Surveillance Interval Extension to Support Current Schedule for Refueling Outage 5,scheduled to Begin 960127 ML20095L2181995-12-28028 December 1995 Suppl Application for License Transfer of 12.58% Ownership Interest in Addition to 17.42% Approved on 951220 PY-CEI-NRR-2004, Application for Amend to License NPF-58,revising License to Reflect License Transfer for Part of Oh Edison Co Ownership Interest in Pnpp Unit 1 to Wholly Owned Subsidiary,Oes Nuclear,Inc1995-11-22022 November 1995 Application for Amend to License NPF-58,revising License to Reflect License Transfer for Part of Oh Edison Co Ownership Interest in Pnpp Unit 1 to Wholly Owned Subsidiary,Oes Nuclear,Inc PY-CEI-NRR-1978, Application for Amend to License NPF-58,requesting Rev to TS for Onsite Power Distribution Sys:Ts 3/4.8.3.1, Distribution - Operating1995-11-0202 November 1995 Application for Amend to License NPF-58,requesting Rev to TS for Onsite Power Distribution Sys:Ts 3/4.8.3.1, Distribution - Operating PY-CEI-NRR-1995, Application for Amend to License NPF-58,revising TS Requirements for Handling Irradiated Fuel in Containment or Fuel Handling Bldg & Certain Specs Related to Performing Core Alterations1995-11-0202 November 1995 Application for Amend to License NPF-58,revising TS Requirements for Handling Irradiated Fuel in Containment or Fuel Handling Bldg & Certain Specs Related to Performing Core Alterations PY-CEI-NRR-1997, Application for Amend to License NPF-58,providing Suppl Info That Revises License to Reflect Proposed Merger of Operating Companies1995-11-0101 November 1995 Application for Amend to License NPF-58,providing Suppl Info That Revises License to Reflect Proposed Merger of Operating Companies PY-CEI-NRR-1969, Application for Amend to License NPF-58,revising Tech Specs Allowable Values & Trip Setpoints for Selected Plant Process Instrumentation Using Instrument Setpoint Methodology Discussed in Util (PY-CEI/NRR-1706L)1995-08-29029 August 1995 Application for Amend to License NPF-58,revising Tech Specs Allowable Values & Trip Setpoints for Selected Plant Process Instrumentation Using Instrument Setpoint Methodology Discussed in Util (PY-CEI/NRR-1706L) PY-CEI-NRR-1961, Application for Amends to Licenses NPF-58,reflecting One Time Extension of Performance Intervals for Certain TS Surveillance Requirements1995-06-30030 June 1995 Application for Amends to Licenses NPF-58,reflecting One Time Extension of Performance Intervals for Certain TS Surveillance Requirements PY-CEI-NRR-1954, Application for Amend to License NPF-58.Amend Would Allow one-time Extension of Performance Intervals for Certain Srs. Application Supplements Original Request1995-06-0909 June 1995 Application for Amend to License NPF-58.Amend Would Allow one-time Extension of Performance Intervals for Certain Srs. Application Supplements Original Request PY-CEI-NRR-1956, Application for Amend to License NPF-58,proposing Early Implementation of Control Rod Drive Scram Time Testing Consistent W/Requirements in Pnpp Improved TS LAR1995-06-0101 June 1995 Application for Amend to License NPF-58,proposing Early Implementation of Control Rod Drive Scram Time Testing Consistent W/Requirements in Pnpp Improved TS LAR PY-CEI-NRR-1944, Suppl Application for Amend to License NPF-58,App a Tss. Suppl Addresses Minor Discrepancies & Items Needing Clarification1995-05-0505 May 1995 Suppl Application for Amend to License NPF-58,App a Tss. Suppl Addresses Minor Discrepancies & Items Needing Clarification PY-CEI-NRR-1932, Application for Amend to License NPF-58.Amend Would Incorporate Results of Work Performed by BWROG Re Elimination of Selected Response Time Testing Requirements1995-05-0101 May 1995 Application for Amend to License NPF-58.Amend Would Incorporate Results of Work Performed by BWROG Re Elimination of Selected Response Time Testing Requirements PY-CEI-NRR-1934, Application for Amend to License NPF-58,proposing Extension for One Operating Cycle of Exception to LCO 3.0.4 as Applies to TS for MSIV LCS1995-04-28028 April 1995 Application for Amend to License NPF-58,proposing Extension for One Operating Cycle of Exception to LCO 3.0.4 as Applies to TS for MSIV LCS PY-CEI-NRR-1927, Application for Amend to License NPF-58 Re Removal of License Conditions for Tdi EDGs Specified by Paragraph 2.c & Defined in Attachment 2 to Operating License1995-04-28028 April 1995 Application for Amend to License NPF-58 Re Removal of License Conditions for Tdi EDGs Specified by Paragraph 2.c & Defined in Attachment 2 to Operating License 1999-09-09
[Table view] Category:TEXT-LICENSE APPLICATIONS & PERMITS
MONTHYEARPY-CEI-NRR-2427, Application for Amend to License NPF-58,deleting License Condition 2.C.10 Re Controls Over Containment Air Locks During Plant Outages & Clarifying License Condition 2.F Re Reporting Requirements of TS & EPP Violations1999-09-14014 September 1999 Application for Amend to License NPF-58,deleting License Condition 2.C.10 Re Controls Over Containment Air Locks During Plant Outages & Clarifying License Condition 2.F Re Reporting Requirements of TS & EPP Violations PY-CEI-NRR-2430, Application for Amend to License NPF-58,revising Allowables Values for CST Low Water Level Limits from Greater than or Equal to 59,700 Gallons to Greater than or Equal to 90,300 Gallons1999-09-0909 September 1999 Application for Amend to License NPF-58,revising Allowables Values for CST Low Water Level Limits from Greater than or Equal to 59,700 Gallons to Greater than or Equal to 90,300 Gallons PY-CEI-NRR-2406, Application for Amend to License NPF-58,eliminating Requirement in EPP to Sample Lake Erie Sediment in Perry & Eastlake Plant Area for Corbicula.Summary & Description of Change Is Encl1999-09-0909 September 1999 Application for Amend to License NPF-58,eliminating Requirement in EPP to Sample Lake Erie Sediment in Perry & Eastlake Plant Area for Corbicula.Summary & Description of Change Is Encl PY-CEI-NRR-2420, Application for Amend to License NPF-58,increasing Present 100% Authorized Rated Thermal Power Level of 3579 Megawatts Thermal to 3758 Megawatts Thermal.Proprietary SAR Encl. Proprietary SAR Withheld,Per 10CFR2.790(a)(4)1999-09-0909 September 1999 Application for Amend to License NPF-58,increasing Present 100% Authorized Rated Thermal Power Level of 3579 Megawatts Thermal to 3758 Megawatts Thermal.Proprietary SAR Encl. Proprietary SAR Withheld,Per 10CFR2.790(a)(4) PY-CEI-NRR-2418, Application for Amend to License NPF-58,incorporating Addl Option Into TS 3.9.1 Required Actions When Refueling Interlocks Are Inoperable1999-08-0404 August 1999 Application for Amend to License NPF-58,incorporating Addl Option Into TS 3.9.1 Required Actions When Refueling Interlocks Are Inoperable PY-CEI-NRR-2398, Application for Amend to License NPF-58,changing SRs as Identified to Support Implementation of 24-month Operating Cycle at Pnpp1999-06-17017 June 1999 Application for Amend to License NPF-58,changing SRs as Identified to Support Implementation of 24-month Operating Cycle at Pnpp ML20206F5971999-05-0505 May 1999 Application for Amend to License NPF-58,authorizing CEI to Possess Dl 13.74% Undivided Ownership Interest in Pnpp PY-CEI-NRR-2362, Application for Amend to License NPF-58,proposing Change in Plant USAR by Incorporating leak-off Line in RHR Sys, Which Will Significantly Reduce Collective Dose to Plant Operations Personnel.Annotated USAR Pages,Encl1999-03-17017 March 1999 Application for Amend to License NPF-58,proposing Change in Plant USAR by Incorporating leak-off Line in RHR Sys, Which Will Significantly Reduce Collective Dose to Plant Operations Personnel.Annotated USAR Pages,Encl PY-CEI-NRR-2373, Application for Amend to License NPF-58,correcting Typos Found in TS Table 3.3.6.1-11999-03-15015 March 1999 Application for Amend to License NPF-58,correcting Typos Found in TS Table 3.3.6.1-1 PY-CEI-NRR-2359, Suppl Application for Amend to License NPF-58,involving Rev of Main Steam Line Leakage Requirements & Elimination of Main Steam Isolation Valve Leakage Control Sys.Proprietary Calculations Encl.Proprietary Encls Withheld1999-01-18018 January 1999 Suppl Application for Amend to License NPF-58,involving Rev of Main Steam Line Leakage Requirements & Elimination of Main Steam Isolation Valve Leakage Control Sys.Proprietary Calculations Encl.Proprietary Encls Withheld PY-CEI-NRR-2352, Suppl to 980909 LAR to License NPF-58,improving Licensing & Design Basis for Isolation of Feedwater Penetrations, Including Sensitivity Study Performed to Examine Radiological Significance of Leakage Through FW Sys Cvs1999-01-0606 January 1999 Suppl to 980909 LAR to License NPF-58,improving Licensing & Design Basis for Isolation of Feedwater Penetrations, Including Sensitivity Study Performed to Examine Radiological Significance of Leakage Through FW Sys Cvs PY-CEI-NRR-2325, Application for Amend to License NPF-58,applying Addl Conservatism by Modifying MCPR Safety Limit Values,As Calculated by Ge.Proprietary Addl Info Re 1.09 Cycle Specific Slmcpr,Encl.Proprietary Info Withheld1998-10-27027 October 1998 Application for Amend to License NPF-58,applying Addl Conservatism by Modifying MCPR Safety Limit Values,As Calculated by Ge.Proprietary Addl Info Re 1.09 Cycle Specific Slmcpr,Encl.Proprietary Info Withheld PY-CEI-NRR-2322, Application for Amend to License NPF-58,stipulating That Water Leakage from Feedwater motor-operated CIVs Will Be Added Into Primary Coolant Sources Outside of Containment Program & Valves Need Not Be Included in Test Program1998-09-0909 September 1998 Application for Amend to License NPF-58,stipulating That Water Leakage from Feedwater motor-operated CIVs Will Be Added Into Primary Coolant Sources Outside of Containment Program & Valves Need Not Be Included in Test Program PY-CEI-NRR-2298, Application for Amend to License NPF-58,increasing Present Div 3 DG Fuel Oil Level Requirements to Account for Rounding Error in Calculation & Unusable Vol Due to Vortex Formation at Eductor Suction Nozzles Located in Fuel Oil Storag1998-09-0303 September 1998 Application for Amend to License NPF-58,increasing Present Div 3 DG Fuel Oil Level Requirements to Account for Rounding Error in Calculation & Unusable Vol Due to Vortex Formation at Eductor Suction Nozzles Located in Fuel Oil Storage Tank PY-CEI-NRR-2319, Application for Amend to License NPF-58,permitting EDG TS Action Completion Time of Up to 14 Days for Div 1 or 2 EDG & Allow Performance of EDG 24-hour TS SR Test in Modes 1 & 21998-09-0303 September 1998 Application for Amend to License NPF-58,permitting EDG TS Action Completion Time of Up to 14 Days for Div 1 or 2 EDG & Allow Performance of EDG 24-hour TS SR Test in Modes 1 & 2 PY-CEI-NRR-2300, Application for Amend to License NPF-58,allowing Blind Flange in Inclined Fuel Transfer Sys (Ifts) Containment Penetration to Be Removed While Primary Containment Is Required to Be Operable1998-08-31031 August 1998 Application for Amend to License NPF-58,allowing Blind Flange in Inclined Fuel Transfer Sys (Ifts) Containment Penetration to Be Removed While Primary Containment Is Required to Be Operable PY-CEI-NRR-2299, Supplemental Application for Amend to License NPF-58, Revising MSL Leakage Requirements & Eliminating Msli Valve Leakage Control Sys.Proprietary & non-proprietary Rev 1 to Calculation Psat 08401T.03,encl.Proprietary Info Withheld1998-07-22022 July 1998 Supplemental Application for Amend to License NPF-58, Revising MSL Leakage Requirements & Eliminating Msli Valve Leakage Control Sys.Proprietary & non-proprietary Rev 1 to Calculation Psat 08401T.03,encl.Proprietary Info Withheld ML20151P1891998-07-13013 July 1998 Application for Amend to License NPF-58,revising Safety Setpoint Requirements for Srv.Proprietary Info & Affidavit Are Contained in Attachment 5.Proprietary Info Withheld PY-CEI-NRR-2295, Application for Amend to License NPF-58,revising TS 3.1.7, Standby Liquid Control Sys to Increase Boron Concentration in Standby Liquid Control Sys for Cycle 8 Fuel Design & to Provide Margin for Future Cycles as Required1998-06-30030 June 1998 Application for Amend to License NPF-58,revising TS 3.1.7, Standby Liquid Control Sys to Increase Boron Concentration in Standby Liquid Control Sys for Cycle 8 Fuel Design & to Provide Margin for Future Cycles as Required ML20236H6931998-06-30030 June 1998 Application for Amend to License NPF-58,transferring Operating Authority for Pnpp from Ceic & Centerior Svc Co to New Operating Company Named Firstenergy Nuclear Operating Co.Marked Up License,Safety & Environ Assessments,Included PY-CEI-NRR-2245, Application for Amend to License NPF-58,revising TS 3.8.1, AC Sources - Operating, to Be Consistent W/Recommendations in GL 94-01, Removal of Accelerated Testing & Special Reporting Requirements for Edgs1997-12-23023 December 1997 Application for Amend to License NPF-58,revising TS 3.8.1, AC Sources - Operating, to Be Consistent W/Recommendations in GL 94-01, Removal of Accelerated Testing & Special Reporting Requirements for Edgs PY-CEI-NRR-2230, Application for Amend to License NPF-58,incorporating Temp Control Valves & Associated Bypass Lines Around Emergency Closed Cooling Sys Heat Exchangers1997-10-22022 October 1997 Application for Amend to License NPF-58,incorporating Temp Control Valves & Associated Bypass Lines Around Emergency Closed Cooling Sys Heat Exchangers PY-CEI-NRR-2207, Application for Amend to License NPF-58,revising TS 5.2.2.e, Organization-Unit Staff, by Removing Ref to NRC Policy Statement on Working Hours1997-09-0808 September 1997 Application for Amend to License NPF-58,revising TS 5.2.2.e, Organization-Unit Staff, by Removing Ref to NRC Policy Statement on Working Hours PY-CEI-NRR-2206, Application for Amend to License NPF-58,revising Pressure- Temp Limits,Per Reactor Vessel Matl Surveillance Program Requirements Contained in App H of 10CFR50.901997-08-28028 August 1997 Application for Amend to License NPF-58,revising Pressure- Temp Limits,Per Reactor Vessel Matl Surveillance Program Requirements Contained in App H of 10CFR50.90 ML20217F5751997-07-28028 July 1997 Application for Amends to Licenses DPR-66,NPF-73 & NPF-58, Authorizing Holders to Possess Beaver Valley Power Station, Unit 1 & Authorizes Duquesne Light to Use & Operate Beaver Valley Unit 1 in Accordance W/Procedures PY-CEI-NRR-2164, Application for Amend to License NPF-58,revising Existing Exception to LCO 3.0.4 as Applies to LCO 3.6.1.9 for MSIV Leakage Control Sys1997-05-0202 May 1997 Application for Amend to License NPF-58,revising Existing Exception to LCO 3.0.4 as Applies to LCO 3.6.1.9 for MSIV Leakage Control Sys PY-CEI-NRR-2165, Application for Amend to License NPF-58,revising Tech Specs Surveillance Requirement for MSIV Leakage Rate Acceptance Criteria1997-05-0202 May 1997 Application for Amend to License NPF-58,revising Tech Specs Surveillance Requirement for MSIV Leakage Rate Acceptance Criteria PY-CEI-NRR-2155, Application for Amend to License NPF-58,revising TS Surveillance Requirements 3.9.1.1 & 3.9.2.2,extending SR Frequency on Refueling Equipment & one-rod-out Interlocks1997-04-0909 April 1997 Application for Amend to License NPF-58,revising TS Surveillance Requirements 3.9.1.1 & 3.9.2.2,extending SR Frequency on Refueling Equipment & one-rod-out Interlocks PY-CEI-NRR-2133, Application for Amend to License NPF-58,requesting Implementation of App J,Option B,Performance-based Primary Containment Leakage Rate Testing Program for Type A,B & C Leak Rate Tests1997-01-31031 January 1997 Application for Amend to License NPF-58,requesting Implementation of App J,Option B,Performance-based Primary Containment Leakage Rate Testing Program for Type A,B & C Leak Rate Tests ML20132C7601996-12-13013 December 1996 Application for Amend to License NPF-58,authorizing Transfers of Control PY-CEI-NRR-2104, Application for Amend to License NPF-58,modifying MCPR Reactor Core Safety Limit Contained in TS 2.1.1.21996-10-24024 October 1996 Application for Amend to License NPF-58,modifying MCPR Reactor Core Safety Limit Contained in TS 2.1.1.2 ML20117E7821996-08-27027 August 1996 Application for Amend to License NPF-58,revising MSL Leakage Requirements & Eliminating MSIV Leakage Control Sys. Attachment 7 Provides Proprietary Dose Calculations. Attachment 7 Withheld PY-CEI-NRR-1999, Application for Amend to License NPF-58,revising Improved Tech Specs.Changes Either Administrative in Nature or Reflect Minor Technical Errors Discovered During Implementation Process1996-04-26026 April 1996 Application for Amend to License NPF-58,revising Improved Tech Specs.Changes Either Administrative in Nature or Reflect Minor Technical Errors Discovered During Implementation Process PY-CEI-NRR-2030, Application for Amend to License NPF-58 Re Drywell Personnel Air Lock Shield Door Analyses1996-02-27027 February 1996 Application for Amend to License NPF-58 Re Drywell Personnel Air Lock Shield Door Analyses PY-CEI-NRR-2027, Application for Amend to License NPF-58,changing TS to Reflect Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 61996-02-17017 February 1996 Application for Amend to License NPF-58,changing TS to Reflect Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 6 PY-CEI-NRR-2007, Application for Amend to License NPF-58,revising TS Requirements for Drywell Leak Rate Testing1996-01-16016 January 1996 Application for Amend to License NPF-58,revising TS Requirements for Drywell Leak Rate Testing PY-CEI-NRR-2013, Application for Amend to License NPF-58,requesting one-time Surveillance Interval Extension to Support Current Schedule for Refueling Outage 5,scheduled to Begin 9601271996-01-10010 January 1996 Application for Amend to License NPF-58,requesting one-time Surveillance Interval Extension to Support Current Schedule for Refueling Outage 5,scheduled to Begin 960127 ML20095L2181995-12-28028 December 1995 Suppl Application for License Transfer of 12.58% Ownership Interest in Addition to 17.42% Approved on 951220 PY-CEI-NRR-2004, Application for Amend to License NPF-58,revising License to Reflect License Transfer for Part of Oh Edison Co Ownership Interest in Pnpp Unit 1 to Wholly Owned Subsidiary,Oes Nuclear,Inc1995-11-22022 November 1995 Application for Amend to License NPF-58,revising License to Reflect License Transfer for Part of Oh Edison Co Ownership Interest in Pnpp Unit 1 to Wholly Owned Subsidiary,Oes Nuclear,Inc PY-CEI-NRR-1978, Application for Amend to License NPF-58,requesting Rev to TS for Onsite Power Distribution Sys:Ts 3/4.8.3.1, Distribution - Operating1995-11-0202 November 1995 Application for Amend to License NPF-58,requesting Rev to TS for Onsite Power Distribution Sys:Ts 3/4.8.3.1, Distribution - Operating PY-CEI-NRR-1995, Application for Amend to License NPF-58,revising TS Requirements for Handling Irradiated Fuel in Containment or Fuel Handling Bldg & Certain Specs Related to Performing Core Alterations1995-11-0202 November 1995 Application for Amend to License NPF-58,revising TS Requirements for Handling Irradiated Fuel in Containment or Fuel Handling Bldg & Certain Specs Related to Performing Core Alterations PY-CEI-NRR-1997, Application for Amend to License NPF-58,providing Suppl Info That Revises License to Reflect Proposed Merger of Operating Companies1995-11-0101 November 1995 Application for Amend to License NPF-58,providing Suppl Info That Revises License to Reflect Proposed Merger of Operating Companies PY-CEI-NRR-1969, Application for Amend to License NPF-58,revising Tech Specs Allowable Values & Trip Setpoints for Selected Plant Process Instrumentation Using Instrument Setpoint Methodology Discussed in Util (PY-CEI/NRR-1706L)1995-08-29029 August 1995 Application for Amend to License NPF-58,revising Tech Specs Allowable Values & Trip Setpoints for Selected Plant Process Instrumentation Using Instrument Setpoint Methodology Discussed in Util (PY-CEI/NRR-1706L) PY-CEI-NRR-1961, Application for Amends to Licenses NPF-58,reflecting One Time Extension of Performance Intervals for Certain TS Surveillance Requirements1995-06-30030 June 1995 Application for Amends to Licenses NPF-58,reflecting One Time Extension of Performance Intervals for Certain TS Surveillance Requirements PY-CEI-NRR-1954, Application for Amend to License NPF-58.Amend Would Allow one-time Extension of Performance Intervals for Certain Srs. Application Supplements Original Request1995-06-0909 June 1995 Application for Amend to License NPF-58.Amend Would Allow one-time Extension of Performance Intervals for Certain Srs. Application Supplements Original Request PY-CEI-NRR-1956, Application for Amend to License NPF-58,proposing Early Implementation of Control Rod Drive Scram Time Testing Consistent W/Requirements in Pnpp Improved TS LAR1995-06-0101 June 1995 Application for Amend to License NPF-58,proposing Early Implementation of Control Rod Drive Scram Time Testing Consistent W/Requirements in Pnpp Improved TS LAR PY-CEI-NRR-1944, Suppl Application for Amend to License NPF-58,App a Tss. Suppl Addresses Minor Discrepancies & Items Needing Clarification1995-05-0505 May 1995 Suppl Application for Amend to License NPF-58,App a Tss. Suppl Addresses Minor Discrepancies & Items Needing Clarification PY-CEI-NRR-1932, Application for Amend to License NPF-58.Amend Would Incorporate Results of Work Performed by BWROG Re Elimination of Selected Response Time Testing Requirements1995-05-0101 May 1995 Application for Amend to License NPF-58.Amend Would Incorporate Results of Work Performed by BWROG Re Elimination of Selected Response Time Testing Requirements PY-CEI-NRR-1934, Application for Amend to License NPF-58,proposing Extension for One Operating Cycle of Exception to LCO 3.0.4 as Applies to TS for MSIV LCS1995-04-28028 April 1995 Application for Amend to License NPF-58,proposing Extension for One Operating Cycle of Exception to LCO 3.0.4 as Applies to TS for MSIV LCS PY-CEI-NRR-1927, Application for Amend to License NPF-58 Re Removal of License Conditions for Tdi EDGs Specified by Paragraph 2.c & Defined in Attachment 2 to Operating License1995-04-28028 April 1995 Application for Amend to License NPF-58 Re Removal of License Conditions for Tdi EDGs Specified by Paragraph 2.c & Defined in Attachment 2 to Operating License 1999-09-09
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l yun _ n. Parry Nuclear Power Plant l yy to Center Road P>rry, Ohio 44081 1
' Lew W.Myers I 210-280-5915 l Vice President Fax:216-280 8029 l
o September 3,1998 PY-CEI/NRR-2298 United States Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 l
Perry Nuclear Power Plant !
, Docket No. 50-440 ;
License Amendment Request Pursuant to 10CFR50.90: Revision of the Division 3 Diesel Generator Fuel Oil Level Requirements Ladies and Gentlemen:
Nuclear Regulatory Commission review and approval of a license amendment for the Perry Nuclear Power Plant (PNPP) is requested pursuant to 10CFR50.90. The proposed license amendmen' re uest increases the present Division 3 Diesel Generator fuel oil level requirements to account for (1) a rounding error in the calculation, and (2) the unusable volume due to vortex fnmation at the eductor suction nozzles located in the fuel oil storage tank.
Attachment 1 provides the Summary, a Description of the Proposed Technical Specification Change, a Safety Analysis, and an Environmental Consideration.
Attachment 2 provides the Significant Hazards Consideration. Attachment 3 provides the annotated Technical Specification pages reflecting the proposed change. ,
If you have questions or require additional information, please contact Mr. Henry L. {
Hegrat, Manager - Regulatory Affairs, at (440) 280-5606.
Very truly yours, Af,
- 7 Attachments cc: NRC Project Manager NRC Resident Inspector NRC Region III State of Ohio
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.C 9909150049 990903 I PDR ADOCK 05000440 I P pm /
1, Lew W. Myers, being duly sworn state that (1) I am Vice President - Nuclear, of the Centerior Service Company, (2) I am duly authorized to execute and file this certification on behalfof The Cleveland Electric Illuminating Company and Toledo Edison Company, and as the duly authorized agent for Duquesne Light Company, Ohio Edison Company, and Pennsylvania Power Company, and (3) the statements set forth herein are true and correct to the best of my knowledge, information and belief.
di~19s Sworn to and subscribed before me, the 3d day of Stdfmbet , RClk,
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My commission tassesv24/20H
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Attachment 1 PY-CEI/NRR-2298L I Page1of3
SUMMARY
l This proposed change request involves a revision to the Perry Nuclear Power Plant -
(PNPP) Technical Specifications (TS), Limiting Condition for Operation (LCO) 3.8.3, Action A and Surveillance Requirement (SR) 3.8.3.1. Specifically, this change revises
, the Division 3 Diesel Generator (DG) 7-day fuel oil supply requirement from 36,100 l
gallons to 36,700 gallons and the 6-day fuel oil supply requirement from 31,500 gallons to 32,000 gallons.
i These requirements are being revised due to a discrepancy identified in the associated Mechanical Design Calculation (Reference 1). The calculation was revised (1) to correct l a rounding error, and (2) to consider vortex formation near the eductor suction nozzle l located near the bottom of the fuel oil storage tank. The revised calculation and l associated TS requirement revision ensures a sufficient fuel oil volume to maintain l submergence of the eductor suction nozzle so that vortex formation would not occur
! during the required 7-day DG operation. In addition, the revised calculation and associated TS requirement revision continues to maintain a minimum fuel oil inventory based upon the DG operating continuously for 7 days at rated capacity. This is consistent with Section 5.4 of ANS-59.51/ ANSI N195-1976 (Reference 2).
DESCRIPTION OF THE PROPOSED TECHNICAL SPECIFICATION CHANGE i
l This proposed change revises the present Division 3 DG fuel oil level supply
- requirements to account for an unusable volume due to vortex formation of the eductor l suction nozzles located near the bottom of the fuel oil storage tank. Specifically, l Condition A of Limiting Condition for Operation (LCO) 3.8.3, " Diesel Fuel Oil, Lube Oil, and Starting Air" and Surveillance Requirement (SR) 3.8.3.1 were modified to revise the fuel oillevellimits.
i Condition A was revised to denote: l l
"2. For Div 3, < 36,700 gal and 2 32,000 gal."
SR 3.8.3.1 was revised to denote: l "b. 2 36,700 gal of fuel for Div 3 DG."
The annotated pages for the proposed change to Condition A and SR 3.8.3.1 are provided l
in Attachment 3. No TS Bases changes are necessary to support this proposed change.
Attachment 1 PY-CEl/NRR-2298L Page 2 0f 3 SAFETY ANALYSIS l
The Division 3 DG is provided with a storage tank having a fuel oil capacity of 39,375 gallons.' The DG fuel oil tank is designed to provide the capacity of fuel oil necessary to operate the DG for a period of 7 days while supplying maximum post loss-of-coolant accident load demand. The 7-day period is sufficient time to place the unit in a safe shutdown condition and to bring in replenishment fuel from an offsite location. ,
The DG fuel oil tank inventory requirements are provided in SR 3.8.3.1 and Action A of LCO 3.8.3. SR 3.8.3.1 provides verification of the 7-day supply requirement. The ;
current TS 7-day supply requirement is 2 36,100 gallons. Action A of LCO 3.8.3 l provides the designated Conditions which restricts the fuel oil level reduction between a i 7-day supply and a 6-day supply requirement. The current TS restriction for Dividon 3 is !
< 36,100 gallons and 2 31,500 gallons. ,
During an NRC inspection conducted from February 23 through March 5,1998, a '
discrepancy was identified between Mechanical Design Calculation R45-09 Revision 4 .
(Reference 1) and TS LCO 3.8.3 for the Division 3 DG fuel oil storage tank 7-day supply !
requirement. The discrepancy involved a rounding error in the calculation. The !
calculated 7-day supply requirement of 36,140 gallons (Reference 1) had been non-conservatively rounded down to 36,100 gallons and used as a limit to support the 7-day supply requirement specified in LCO 3.8.3.
During the ensuing investigation and resolution of the discrepancy, PNPP discovered that the calculation did not consider vortex formation near the eductor suction nozzle located near the bottom of the fuel oil storage tank. Vortex formation occurs as the level in the tank drains down to near the top of the suction nozzle producing a swirling effect of the liquid. Due to this swirling effect, air begins to be introduced into the suction piping impairing the fuel transfer system capability. This condition would occur before the fuel i level reached the top of the suction nozzle piping, thereby reducing the usable volume of the fuel oil. At the current TS limit, the potential exists that vortex formation could occur and the DG would exhaust its fuel supply after 6 days and 21.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> instead of the TS requirement of 7 days.
To overcome the effects of vortex formation, an additional depth of fuel oil is required to be maintained. The subsequent calculation determined that the required 7-day supply requirement should be 36,700 gallons, replacing the current TS value of 36,100 gallons.
In addition, the required 6-day supply requirement should be 32,000 gallons, replacing the current TS value of 31,500 gallons. The revised calculation and associated TS requirement revision ensures a sufficient fuel oil volume to maintain submergence of the eductor suction nozzle so that vortex formation does not occur. In addition, the revised j calculation and associated TS requirement revision continues to maintain a minimum fuel oil inventory bas::d upon the DG operating continuously for 7 days at rated capacity.
This is consistent with Section 5.4 of ANS 59.51/ ANSI N195-1976 (Reference 2).
Attachm:nt 1 PY-CEl/NRR-2298L Page 3 of 3 Siniilar coricerns were investigated on the Division I and Division 2 DGs. However, the proposed change request only addresses the Division 3 DG since the Division 1 and Division 2 DG TS limits had suflicient margins in the calculations.
REFERENCES
- 1. Mechanical Design Calculation, R45-9, Revi: ion 4.
- 2. ANS-59.51/ ANSI N195-1976, " Fuel Oil Systems for Standby Diesel-Generators."
ENVIRONMENTAL CONSIDERATION The proposed Technical Specification change request was evaluated against the criteria of 10CFR51.22 for environmental considerations. The proposed change does not significantly increase individual or cumulative occupational radiation exposures, does not significantly change the types or significantly increase the amount of effluents that may be released off-site and, as discussed in Attachment 2, does not involve a significant hazards consideration. Based on the foregoing, it has been concluded that the proposed Technical Specification change meets the criteria given in 10CFR51.22(c)(9) for categorical exclusion from the requirement for an Environmental Impact Statement. '
COMMITMENTS WITHIN THIS LETTER There are no regulatory commitments contained in this letter. Any actions dixussed in this document represents intended or planned actions, are described for the NRC's information, and are not regulatory commitments. Please notify the Manager -
Regulatory Affairs at the Perry Nuclear Power Plant of any questions regarding this document or any associated regulatory commitments.
. Attachment 2 PY-CEI/NRR-2298L Page 1 of 3 SIGNIFICANT HAZARDS CONSIDERATION The standards used to arrive at a determination that a request for amendment involves no significant hazards considerations are included in the Commission's Regulation,
. 10CFR50.92, which states that the operation of the facility in accordance with the proposed amendment would not: (1) involve a significant increase in the probability or consequences of an accident previously evaluated; or (2) create the possibility of a new or different kind of accident from any accident previously evaluated; or (3) involve a significant reduction in a margin of safety.
The proposed amendment has been reviewed with respect to these three factors and it has been determined that the proposed change does not involve a significant hazard because:
(1) The proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated.
The proposed change revises the Division 3 Diesel Generator (DG) 7-day fuel oil l supply requirement and the 6-day fuel oil supply requirement due to a rounding error in the calculation and due to the consideration of vortex formation near the eductor suction nozzle located near the bottom of the fuel oil storage tank. The l proposed change ensures a sufficient DG fuel oil volume to maintain submergence of the eductor suction nozzle so that a vortex formation does not occur. Eliminating the concerns of a vortex formation will provide assurance that the DG fuel oil system will perform its intended function. Analyzed events are initiated by the failure of plant structures, systems, or components. The DGs are not considered as initiators of any analyzed event. The proposed change does not have a detrimental impact on the integrity of any plant structure, system, or component that initiates an analyzed event. The proposed change will not alter 1- the operation of, or otherwise increase its failure probabi!ity of any plant equipment that initiates an analyzed event. As such, the probability of occurrence for a previously analyzed accident is not significantly increased.
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Attachment 2 PY-CEI/NRR-2298L Page 2 0f 3 The' consequences of a previously analyzed event are dependent on the initial conditions assumed for the analysis, the availability and successful functioning of the equipment assumed to operate in response to the analyzed event, and the setpoints at which these actions are initiated. The proposed change ensures a sufficient DG fuel oil volume to maintain submergence of the eductor suction nozzle so that a vortex formation does not occur. The proposed change continues to ensure that the DG fuel oil system will adequately support the design basis performance and mitigative function of the DG. The proposed change does not affect the performance of any credited equipment. As a result, no analyses assumptions are violated and there are no adverse effects on the factors that contribute to offsite or onsite dose as the result of an accident. The proposed change does not affect setpoints that initiate protective or mitigative actions. The proposed change ensures that plant structures, systems, or components are maintained consistent with the safety analysis and licensing bases. Rased on this evaluation, there is no significant increase in the consequences of 2 previously analyzed event.
Therefore, this change will not involve a significant increase in the probability or consequences of any accident previously evaluated.
(2) The proposed change would not create the possibility of a new or different kind of accident from any accident previously evaluated.
The proposed change revises the Division 3 DG 7-day fuel oil supply requirement and the 6-day fuel oil supply requirement due to a rounding error in the calculation and due to the consideration of vortex formation near the eductor suction nozzle located near the bottom of the fuel oil storage tank. The proposed change ensures a sufficient DG fuel oil volume to maintain submergence of the eductor suction nozzle so that a vortex formation does not occur. Eliminating the concerns of a vortex formation will provide assurance that the DG fuel oil system will perform its intended function. The proposed change does not involve a physical change to the DG fuel oil system or tank, nor does it change the operating characteristics or the safety function of the DG The proposed change does not involve a physical alteration of the plant. No new or different equipment is being installed and no installed equipment, which might initiate a new or different kind of accident, is being operated in a different manner. The proposed change does not impact core reactivity or the manipulation of fuel bundles. The DG performs a mitigative function. There is no alteration to the parameters within which the plant is normally operated or in the setpoints that initiate protective or mitigative actions. As a result no new failure modes are being introduced. There are no changes in the methods governing normal plant operation, nor are the methods utilized to respond to plant transients altered.
Therefore, the proposed change does not create the possibility of a new or different kind of accident from any previously evaluated.
Attachment 2 PY-CEl/NRR-2298L Page 3 of 3 (3) The proposed change will not involve a significant reduction in the margin of safety.
The margin of safety is established through the design of the plant structures, systems, and components, the parameters within which the plant is operated, and the establishment of the setpoints for the actuation of equipment relied upon to respond to an event. The proposed change revises the Division 3 DG 7-day fuel oil supply requirement and the 6-day fuel oil supply requirement due to a rounding error in the calculation and due to the consideration of vortex formation near the eductor suction nozzle located near the bottom of the fuel oil storage tank. The margin of safety is being maintained by the proposed change from the margin of safety established by the original design. The proposed change ensures a sufficient DG fuel oil volume to maintain submergence of the eductor suction nozzle so that a vortex formation does not ' occur. Eliminating the concerns of a vortex formation will provide assurance that the DG fuel oil system will perform its intended function. The proposed change does not significantly impact the condition or performance of structures, systems, and components relied upon for accident mitigation. The proposed change, in fact, provides assurance of the DG's ability to perform its intended function as previously evaluated. The proposed change does not significantly impact any safety analysis assumptions or results.
Therefore, the proposed change does not involve a significant reduction in a margin of safety.
Based on the above considerations, it is concluded that a significant hazard would not be introduced as a result of this proposed change. Also, since NRC approval of this change must be obtained prior to implementation, no unreviewed safety question can exist.
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