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Category:TECHNICAL SPECIFICATIONS
MONTHYEARML18039A8811999-09-28028 September 1999 Proposed Tech Specs Re Increased MSIV Leakage Rate Limits & Exemption from 10CFR50,App J ML18039A8241999-07-28028 July 1999 Proposed Tech Specs Providing TS for Operation of Oscillation PRM Upscale Trip Function in Aprm,Which Is Part of Power Range Neutron Monitoring Sys ML18039A8001999-06-0303 June 1999 Proposed Tech Specs,Reducing Allowable Value Used for Reactor Vessel Water Level - Low,Level 3 for Several Instrument Functions ML18039A6991999-02-22022 February 1999 Proposed Tech Specs & Bases Pages Incorporating NRC Approved TS Change 354,requiring Oscillation PRM to Be Integrated Into Approved Power uprate,24-month Operating Cycle & Single Recirculation Loop Operation ML18039A6601998-12-15015 December 1998 Proposed Tech Specs,Revising pressure-temp Curves to Extend Validity of Curves to 32 EFPY ML18039A5041998-09-0808 September 1998 Proposed Tech Specs Providing TS for Operation of Oscillation Power Range Monitor Upscale Trip Function in Aprm,Which Is Part of Power Range Neutron Monitoring Sys ML18039A5001998-09-0404 September 1998 Proposed Tech Specs Re Use of Containment Overpressure for ECCS Pump Net Positive Suction Head Analyses ML18039A4791998-08-14014 August 1998 Proposed Tech Specs Pages Re Amends to Licenses DPR-33, DPR-52 & DPR-68 to Change Ts.Proposed Changes Decrease Frequency of once-per-cycle Instrument Calibrations by Substituting 24 Months for 18 Months ML18039A4611998-07-31031 July 1998 Proposed Tech Specs B 3.6-2,B 3.6-7 & B 3 3.7-2 for Power Uprate Operation Omitted Pages ML18039A4481998-07-17017 July 1998 Proposed Tech Specs,Adding LCO 3.4.10 & Accompanying TS Bases Provisions from Improved TS-362 Conversion Package as Adapted for Power Uprate Conditions ML18039A4091998-06-26026 June 1998 Proposed Tech Specs Section 3.4,allowing Units 2 & 3 to Operate at Uprated Power Level of 3458 Mwt ML18039A4021998-06-19019 June 1998 Proposed Tech Specs (TS) Converting from Existing Custom TS to Improved TS ML18039A3921998-06-12012 June 1998 Proposed Tech Specs Change 390,decreasing Frequency of once-per-cycle SRs by Substituting 24 Months for 18 Months in Affected TS SRs ML20249A5661998-06-10010 June 1998 Proposed Tech Specs Section 5.0,revising Administrative Controls ML20248C5151998-05-27027 May 1998 Proposed Tech Specs Section 3.8.1,revising AC Sources- Operating ML18039A3181998-04-16016 April 1998 Proposed Rev 2 to Tech Specs Section 3.6, Containment Systems, Converting from Current TS to Improved TS ML18039A2711998-03-16016 March 1998 Proposed Tech Specs Re Power Uprate Operation ML18039A2671998-03-13013 March 1998 Proposed Tech Specs,Converting to Improved Std Ts,Per NUREG- 1433,rev 1, Std TS for GE BWRs (BWR/4). ML18039A2641998-03-12012 March 1998 Proposed Tech Specs ITS Section 3.8 Re Electrical Power Sys. ML18039A2611998-03-0303 March 1998 Proposed Tech Spec Changes TS 393 Re Reactor Vessel Pressure Temperature Curves ML20199E8051998-01-23023 January 1998 Proposed Tech Specs Section 5.0 Re Administrative Controls ML18039A2221997-12-30030 December 1997 Proposed Tech Specs Re RHR SW Pumps Required for multi-unit Operation & Cold Shutdown ML18039A2151997-12-23023 December 1997 Proposed Tech Specs Section 3.7 Re Plant Sys ML18039A2181997-12-22022 December 1997 Proposed Tech Specs Section 3.8 Re Electrical Power Sys ML18039A2101997-12-0404 December 1997 Proposed Tech Specs Pages Re TS Change 362,suppl 7 Re ITS Section 3.1, Reactivity Control Sys. ML18039A2071997-12-0404 December 1997 Proposed Tech Specs Pages Re Suppl 9 to TS Change 362, Including Rev Pages to Improved TS Section 3.5 ML18039A2011997-12-0303 December 1997 Proposed Tech Specs Section 3.9 Re Refueling Operations & Section 3.10, Special Operations. ML18039A1981997-12-0303 December 1997 Improved Tech Specs Pages Re Section 5, Administrative Controls. ML20199D5471997-11-14014 November 1997 Proposed Tech Specs Section 3.0, Limiting Condition for Operation (LCO) Operability & Section 4.0, Design Changes ML20199E1361997-11-14014 November 1997 Proposed Tech Specs Section 3.4 Re Reactor Coolant Sys ML20198Q4521997-11-0505 November 1997 Proposed Tech Specs,Incorporating Improved TS (ITS) Bases Revs & Changes to Supporting Documentation Resulting from Responding to NRC Questions ML18038B9611997-10-0101 October 1997 Proposed Tech Specs,Allowing Bfn,Units 2 & 3,to Operate at Uprated Power Level of 3458 Mwt ML18038B9361997-08-15015 August 1997 Proposed Tech Specs,Extending Existing 7-day EDG Allowed Outage Time to Fourteen Days ML18038B9061997-06-19019 June 1997 Proposed Tech Specs Supporting one-time 14-day Limiting Condition for Operation for Each EDG to Accommodate Pending Vendor Recommended Maint Activities ML20138J3781997-05-0101 May 1997 Proposed Tech Specs,Revising TS-362 Amend for Section 3.8, Electrical Power Sys Which Addresses NRC Review Comments ML18038B8651997-04-24024 April 1997 Proposed Tech Specs,Submitting Revised BFN TS Bases Section 3.5.N, References, Reflecting Updated LOCA Analyses for Units 2 & 3 ML20137U1691997-04-11011 April 1997 Proposed Tech Specs Re Pr Neutron Monitor Upgrade W/ Implementation of Average Pr Monitor & Rod Block Monitor TS (ARTS) Improvements & Max Extended Load Line Limit Analyses ML18038B8341997-03-12012 March 1997 Proposed Tech Specs Re Extended EDG Allowed Outage Time ML20136F7851997-03-0606 March 1997 Proposed TS Supporting Planned Replacement of Current Power Range Monitoring Portion of Existing Nms W/Ge Digital Nuclear Measurement Analysis & Control Power Range Neutron Monitor Retrofit Design ML20134G5401997-02-0505 February 1997 Proposed Tech Specs Revising Bases Section 3.7.A/4.7.A, Primary Containment, to Delete Wording Re Maintaining Drywell to Suppression Chamber Differential Pressure Constant for Duration of Drywell to Suppression Chamber ML20132B7401996-12-11011 December 1996 Proposed Tech Specs 2.2.A Re Safety/Relief Valve Setpoint Requirements for Reactor Coolant Sys Integrity ML20117P3341996-09-15015 September 1996 Proposed Tech Specs to Change Unit 3 TS LCO 3.6.F.1 in Order to Perform Repairs & Maint Necessary to Return RCS Recirculation Loop a to Operations ML18038B7541996-09-0606 September 1996 Proposed Conversion from Current TSs to Improved STS Consistent w/NUREG-1433,rev 1 ML20117G7121996-08-30030 August 1996 Proposed Tech Specs Re License Condition on Compliance W/Thermal Water Quality Stds ML20113B1951996-06-21021 June 1996 Proposed Tech Specs,Revising Change in SLMCPR & Bases Description of RHR Suppl Fuel Pool Cooling Mode ML20112G3891996-06-0606 June 1996 Proposed Tech Specs,Revising Section 6, Administrative Controls, to Be More Closely Aligned W/Requirements of Improved Std TSs ML20117H5231996-05-20020 May 1996 Proposed Tech Specs Implementing Guidance of GL 87-09 & NUREG-1433,Rev 1 ML20108D9021996-05-0303 May 1996 Proposed Tech Specs,Withdrawing Amend 219,temporary TS 343T, Rv Water Level Instrumentation & Amend 228,temporary TS 347T,250 Volt DC Control Power Supply Sys AOT for Unit 2 ML20107F9721996-04-14014 April 1996 Proposed Tech Specs,Revising Minimum Required Number of Operable Rv Water Level Trip Sys During Period That RCS Instrument Line Excess Flow Check Valve Surveillance Tests Being Performed ML20096C4401996-01-10010 January 1996 Proposed Tech Specs Re Implementation of 10CFR50,App J, Option B,Performance Based Testing 1999-09-28
[Table view] Category:TECHNICAL SPECIFICATIONS & TEST REPORTS
MONTHYEARML18039A8811999-09-28028 September 1999 Proposed Tech Specs Re Increased MSIV Leakage Rate Limits & Exemption from 10CFR50,App J ML18039A8241999-07-28028 July 1999 Proposed Tech Specs Providing TS for Operation of Oscillation PRM Upscale Trip Function in Aprm,Which Is Part of Power Range Neutron Monitoring Sys ML18039A8001999-06-0303 June 1999 Proposed Tech Specs,Reducing Allowable Value Used for Reactor Vessel Water Level - Low,Level 3 for Several Instrument Functions ML18039A6991999-02-22022 February 1999 Proposed Tech Specs & Bases Pages Incorporating NRC Approved TS Change 354,requiring Oscillation PRM to Be Integrated Into Approved Power uprate,24-month Operating Cycle & Single Recirculation Loop Operation ML18039A6601998-12-15015 December 1998 Proposed Tech Specs,Revising pressure-temp Curves to Extend Validity of Curves to 32 EFPY ML20206F8131998-12-0303 December 1998 Rev 12 to ODCM, for BFN ML18039A5041998-09-0808 September 1998 Proposed Tech Specs Providing TS for Operation of Oscillation Power Range Monitor Upscale Trip Function in Aprm,Which Is Part of Power Range Neutron Monitoring Sys ML18039A5001998-09-0404 September 1998 Proposed Tech Specs Re Use of Containment Overpressure for ECCS Pump Net Positive Suction Head Analyses ML18039A4791998-08-14014 August 1998 Proposed Tech Specs Pages Re Amends to Licenses DPR-33, DPR-52 & DPR-68 to Change Ts.Proposed Changes Decrease Frequency of once-per-cycle Instrument Calibrations by Substituting 24 Months for 18 Months ML18039A4611998-07-31031 July 1998 Proposed Tech Specs B 3.6-2,B 3.6-7 & B 3 3.7-2 for Power Uprate Operation Omitted Pages ML18039A4481998-07-17017 July 1998 Proposed Tech Specs,Adding LCO 3.4.10 & Accompanying TS Bases Provisions from Improved TS-362 Conversion Package as Adapted for Power Uprate Conditions ML18039A4091998-06-26026 June 1998 Proposed Tech Specs Section 3.4,allowing Units 2 & 3 to Operate at Uprated Power Level of 3458 Mwt ML18039A4021998-06-19019 June 1998 Proposed Tech Specs (TS) Converting from Existing Custom TS to Improved TS ML18039A3921998-06-12012 June 1998 Proposed Tech Specs Change 390,decreasing Frequency of once-per-cycle SRs by Substituting 24 Months for 18 Months in Affected TS SRs ML20249A5661998-06-10010 June 1998 Proposed Tech Specs Section 5.0,revising Administrative Controls ML20248C5151998-05-27027 May 1998 Proposed Tech Specs Section 3.8.1,revising AC Sources- Operating ML18039A3181998-04-16016 April 1998 Proposed Rev 2 to Tech Specs Section 3.6, Containment Systems, Converting from Current TS to Improved TS ML18039A2711998-03-16016 March 1998 Proposed Tech Specs Re Power Uprate Operation ML18039A2671998-03-13013 March 1998 Proposed Tech Specs,Converting to Improved Std Ts,Per NUREG- 1433,rev 1, Std TS for GE BWRs (BWR/4). ML18039A2641998-03-12012 March 1998 Proposed Tech Specs ITS Section 3.8 Re Electrical Power Sys. ML18039A2611998-03-0303 March 1998 Proposed Tech Spec Changes TS 393 Re Reactor Vessel Pressure Temperature Curves ML20199E8051998-01-23023 January 1998 Proposed Tech Specs Section 5.0 Re Administrative Controls ML18039A2401998-01-15015 January 1998 Bfnp Unit 2 Cycle 10 Power Ascension Test Program Start-Up Rept, for Period 970929-1105 ML18039A2221997-12-30030 December 1997 Proposed Tech Specs Re RHR SW Pumps Required for multi-unit Operation & Cold Shutdown ML18039A2151997-12-23023 December 1997 Proposed Tech Specs Section 3.7 Re Plant Sys ML18039A2181997-12-22022 December 1997 Proposed Tech Specs Section 3.8 Re Electrical Power Sys ML20217P5051997-12-0808 December 1997 Rev 10 to ODCM, Containing Markups to Rev 9 & 10 ML18039A2101997-12-0404 December 1997 Proposed Tech Specs Pages Re TS Change 362,suppl 7 Re ITS Section 3.1, Reactivity Control Sys. ML18039A2071997-12-0404 December 1997 Proposed Tech Specs Pages Re Suppl 9 to TS Change 362, Including Rev Pages to Improved TS Section 3.5 ML18039A2011997-12-0303 December 1997 Proposed Tech Specs Section 3.9 Re Refueling Operations & Section 3.10, Special Operations. ML18039A1981997-12-0303 December 1997 Improved Tech Specs Pages Re Section 5, Administrative Controls. ML20199D5471997-11-14014 November 1997 Proposed Tech Specs Section 3.0, Limiting Condition for Operation (LCO) Operability & Section 4.0, Design Changes ML20199E1361997-11-14014 November 1997 Proposed Tech Specs Section 3.4 Re Reactor Coolant Sys ML20198Q4521997-11-0505 November 1997 Proposed Tech Specs,Incorporating Improved TS (ITS) Bases Revs & Changes to Supporting Documentation Resulting from Responding to NRC Questions ML18038B9611997-10-0101 October 1997 Proposed Tech Specs,Allowing Bfn,Units 2 & 3,to Operate at Uprated Power Level of 3458 Mwt ML18038B9361997-08-15015 August 1997 Proposed Tech Specs,Extending Existing 7-day EDG Allowed Outage Time to Fourteen Days ML20210V1171997-07-29029 July 1997 Qualification Plan & Rept MIL-STD-462D,CS114,Conducted Susceptibility,Bulk Cable Injection Numac Reactor Bldg Vents Radiation Monitor TVA Bfn,Units 1,2 & 3 ML18038B9061997-06-19019 June 1997 Proposed Tech Specs Supporting one-time 14-day Limiting Condition for Operation for Each EDG to Accommodate Pending Vendor Recommended Maint Activities ML20138J3781997-05-0101 May 1997 Proposed Tech Specs,Revising TS-362 Amend for Section 3.8, Electrical Power Sys Which Addresses NRC Review Comments ML18038B8651997-04-24024 April 1997 Proposed Tech Specs,Submitting Revised BFN TS Bases Section 3.5.N, References, Reflecting Updated LOCA Analyses for Units 2 & 3 ML20137U1691997-04-11011 April 1997 Proposed Tech Specs Re Pr Neutron Monitor Upgrade W/ Implementation of Average Pr Monitor & Rod Block Monitor TS (ARTS) Improvements & Max Extended Load Line Limit Analyses ML18038B8341997-03-12012 March 1997 Proposed Tech Specs Re Extended EDG Allowed Outage Time ML20136F7851997-03-0606 March 1997 Proposed TS Supporting Planned Replacement of Current Power Range Monitoring Portion of Existing Nms W/Ge Digital Nuclear Measurement Analysis & Control Power Range Neutron Monitor Retrofit Design ML20134G5401997-02-0505 February 1997 Proposed Tech Specs Revising Bases Section 3.7.A/4.7.A, Primary Containment, to Delete Wording Re Maintaining Drywell to Suppression Chamber Differential Pressure Constant for Duration of Drywell to Suppression Chamber ML18038B8281997-01-31031 January 1997 Rev 1 to GE-NE-B13-01805-22, Internal Core Spray Line Flaw Evaluation Handbook for Browns Ferry Units 2 & 3. ML18038B8111997-01-22022 January 1997 Rev 0 to Browns Ferry Nuclear Plant,Surveillance Instruction,Inservice Insp Program,Unit 3. ML20132B7401996-12-11011 December 1996 Proposed Tech Specs 2.2.A Re Safety/Relief Valve Setpoint Requirements for Reactor Coolant Sys Integrity ML20117P3341996-09-15015 September 1996 Proposed Tech Specs to Change Unit 3 TS LCO 3.6.F.1 in Order to Perform Repairs & Maint Necessary to Return RCS Recirculation Loop a to Operations ML18038B7541996-09-0606 September 1996 Proposed Conversion from Current TSs to Improved STS Consistent w/NUREG-1433,rev 1 ML20117G7121996-08-30030 August 1996 Proposed Tech Specs Re License Condition on Compliance W/Thermal Water Quality Stds 1999-09-28
[Table view] |
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ENCLOSURE TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)UNITS 2 and 3 PROPOSED TECHNICAL SPECIFICATION (TS)CHANGE TS-384, DESCRIPTION AND EVALUATION OF THE PROPOSED CHANGE MARKED PAGES Aff'ected Pa e List The following pages have been marked and an'X'as been placed in the right hand margin the indicate where changes occur.The affected pages list is identical for both Unit 2 and Unit 3.Unit 2 Bases B 3.6-2 B 3.6-7 B 3.7-2 Unit 3 Bases B 3.6-2 B 3.6-7 B 3.7-2 9808iOOi72 98073i PDR ADQCK 050002bO P PDR PT'i sary Cental neent 8 a.s.l,l SAS (continued)
APPLICABLE
'SlfPY ANN.VS'e safety design bas~s for the primary contaf~ent 1$that ft must withstand the pressures and temperatures of the ligftfng QN~ithout<<xc<<<<ding the design leakage rate.The DSA that postulates the aaxiauw r<<l<<ase of radioactive material~ithin prfaary conta$aaent 1s a LOCA.In the analysis ot th1s acc1dent.1t is assuaged that prifsary contafnw<<nt is OPERABLK such that release of fission products to the envfronm<<nt is controlled by the rate of prfeary contafnaent leakage.Analytical Nethods and assumptfons involvin9 the pr fisary contafnaent are pres<<nted in Refer<<nces I and?.The safety analyses assume a nonmechanistic fission product release foll<ming a OSA, Wfch forms 4h>>Jas4s for.deterafnatfon of offsite doses.The fission product release is, fn turn, based on an assuaef leakage rate from the prfaary containment.
OPERABILITY of the prfaary containamt ensures that the leakage rate assumaed in the safety analyses is not exceeded.The maxim allovatAe leakage rate for the prfeary contafnaant (L,)is 2.0S by wight of the contafnsent a1r per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at the desfgn basis LOCA eaxfea peak containment pressure (P,)oWKQpsfg (Ref.I).t~a"go.a, Primary containment satisfies Criterion 3 of the NC Policy Statesont{Ref.6).primary contafnwent OPERNlllTY is aafntafned by 1 faftfng leakage to s l.0 I, except prior to the first startup after rforidng.a required Prfaary Containment Leakage Rate estino Prograa leakage test.At this tfwe, applicable leakage 1fafts est be Wet.Coeplfance Hth this LCO will ensure a prfaary contafnaent conffguratfon, including equfpeent hatches, that is structurally sound and that~ill lfait leakage to those leakage rates assuae{l fn the safety analyses.Individual leakage rates specffied for the priILary contifnaeit air lock are address<<d in LCO 3.6.1.2.8 3.6-2
primary t:ontainlaent Air Lock..B 3.6.1.2 and leak tightness are essential for maintaining primary containment leakage rate to within limits in the event of a QBA, Not maintaining air lock integr)ty or leak tightness~result,in a leakage rate in excess of that assumed fn the unit safety analysis.ANALYSES So 6 The ON that postulates the iaximua release of radioactive aaterial within primary containment is a Ugj.gn the analysis of this accident, it is assumed that primary containment is OPERABLE, such that release of fission products to the environment is contra)led by the rate of primary containment leakage.The priaary containment is designed with a maximus allowable leakage rate (L,)of.2.gL by night of the containment air per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at the calculated naxiae peak containment pressure (PJ of 9335 psig (Ref.3}.This allowable'eakage rate fores the s for the acceptance criteria iaposed on<he Ns associated, with the air lock.Prissy containeent air lock OPGNStLITY is also regired to IIiniiize the~unt of fission product gases that Imay escape primary containaent through the air lock and contalinate and pressurize,the secondary containment.
The primary containment air lock satisfies Criterion 3 of the NIC Policy Statement (Ref.I).As part of primary cantailnt, the air lock's safety function fs re)ated to control of conta$naent leakage rates fol)erlng a ON.Thus, the air lock's structural integr1ty and leak tightness are essential to the successful altigation'f such an event.The primary containment air lock is required to be OPERABLE.For the air lock to be considered OPERA8LE.the air lock interlock aechanisN aust be OPERABLE, the air lock aust be in cosyliance Hth the Type B air lock leakage test, and both air lock doors must be OPHNlLE.The interlock allows only one air lock door to be opened at a tin.This provision ensures that a gross breach of primary containment does not exist when primary containment is required to be (cont$nueo)8$-UNIT Z B 3.6-7 AaenCee~'.
RHRSM System B 3.7.1 BASES (continued)
APPLICABLE SAFETY ANALYSE The RHRSM System removes heat from the suppression pool to limit the suppression pool temperature and primary containment pressure following a LOCA.This ensures that the primary containment can perform its function of limiting the release of radioactive materials to the environment following a LOCA.The ability of the RHRSM System to support long term cooling of the reactor or primary containment is discussed in the FSAR, Chapters 5 and ll (Refs.2 and 3, respectively).
These analyses explicitly assume that the RHRSM System will provide adequate cooling support t'o the equipment required for safe shutdown.These analyses include the evaluation of the long term primary containment response after a design basis LOCA.oooo The safety analyses for long term cooling were performed for various combinations of RHR System failures'and considers the number of units fueled.Mith one unit fueled, the worst case single failure that would affect the performance of the RHRSM System is any failure that would disable two subsystems or pumps of the RHRSM System (e.g, the failure of an RHR Suppression Pool Cooling/Spray return line valve which effectively disables two RHRSM subsysti or pumps).Mith two and three units fueled, a worst case single failure could also include the loss of two RHRSM pumps caused by losing a 4 kV shutdown board since there are certain alignment configurations that allow two RHRSM pumps to be powered from the same 4 kV shutdown board.As discussed in the FSAR, Section Il.6.3.3.2 (Ref.4)for these analyses, manual initiation of the OPERABLE RHRSM subsystems and the associated RHR System is assumed to occur 10 mi af DBA.The RHRSM flow assumed in the analyses is i pm per pump with two pumps operating in one loop.In th s case, the maximum suppression chamber water temper re and pressure are 177'F (as reported in Referenc an X psig, respectively, well below the design temperature f 281'F and maximum allo~able pressure of 62 psig.This is al'so below the 200'F limit imposed by Design Criteria BFN-50-706IA (Ref.5)for all plant transients involving SRV operations.
The RHRSM System"sat sfies Criterion 3 of the NRC Policy Statement (Ref 6).BFN-UNIT 2 B 3.7-2 (continuedj Amendment Primary Contatnaent B 3.5.1.1 , BASg$(contf nued)APP VOCABLE SaPgn ANALYSES The safety design basis for the primary contafnment fi that it must withstand the pressures and temperatures of the limiting OBA~ithout exceeding the design leakage rate.~<~~The OBA that postulates the maximum release of radioactive material efthfn primary containment is a LOCA.In the analysis of this accident;it is assumed that pr)mary contafnment is OPERABLK such that release of fission products to the environment fs controlled by the rate of primary containlent leakage.Analytical methods and assumptions involving the primary containment are Presenged in References l and 2.-The safety analyses assume a nonmechanfst$
c fission product release follo~ing a DBA,~hich forms the basis for deterafnatfon of offsfte doses.The fission product release is.in turn, based on an assuaed leakage rate from the primary containment.
OPERABILITY of the primary containment ensures that the leakage rate assumed in the safety analyses is not,-exceeded.The maxfaua allowable leakage rate for the primary contafnaent (lJ is 2.'0S by wight of the coniafnment afr per 2i houry at the design b sis LOCA maxfaa peak contailnt pressure (PJ of~sfg (Ref.I).So.6, Prfmary contafrusent satisffes Crfterfon 3 of the NK Policy Stateaent (Ref.6).LCO Prfaary containment OPERABILITY fs mafntafned by lkrltfni leakage to s 1.0 Lexcept prior to the ffrst startup after rforifn9 a required Primary Contafnmat Leakage Rata estfne Program leakage test.At this tfm, applfcable lethge lfifts ant be Net.Coaplfancl fifth thfs LCD adll ensure a pessary containment configuration, including eqefpment hatches, that is structurally sound and that All if@it leakage to those leakage rates assumed in the safety analyses.Individual leakage rates specified for the primary containment afr lock are addressect in LCO 3.6.1.2.~elIT 3 I B 3.6-2 (continued)
Amendment
~\
5 g~Pr)eat'y Containment Air Lack 8 3.5.1.2 ROUND ontinued)and leak tightness are essential<<r maintaining priiary containment leakage rate to within limits in the event of a DBA.Hot maintaining air lock integrity or leak tightness may result in a leakage rate in excess of that assuaed in, the unit safety analysis.AFPL,ICABLK SAFETY ANALYSES The QBA that postulates the eaxfeua release of radioactive material within primary containment is a LOCA.ln the analysis of this accident, it is assumed that primary containmnt is OPHNSLE.such that release of fission products to the environment is controlled by the rate of priaary containaent 1eakage.'he primary containaent is designed with a maximus allowable leakage rate tLJ of 2.{S by weight of the conta$nnant air per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at the calc ated maxima peak containment pressure (P,)of sag (Ref.3).This allowable leakage rate foras the s s for the acceptance criteria ilposed on the SRs associated with the a)r lock.Primary containment air lock OPERANLLDV is also re~irect to~)niaize th>>amount of fission product gases that lay escape primary containment through the a1r lock and contaminate and pressurize,the secondary containment.
The pr$aary containment air lock satisfies Criterion 3 of the NC Policy Statement (Ref.1).As part of priaary containment, the air lock's safety function is related to control of containment leakage rates fo)ledni a GN.Thus, the air lock's structural 4ntegrity aef leak tightn.s are essential to the successful sit!Nation of such an event..The priaary conta$naent air lock is required to be OPERABLE.For the air lock to be considered OPERASLE, the air lock.interlock eechaniaa aust be OPERABLE, the air lock sist be in coaplfance with the Type I air lack leakage test, and both air lock doors aust be OPERABLE.The interlock allows only one air lock door to be opened, at a tim.This provision ensures that a gross breach of.priaary containsent does not exist when primary containaant is required to be (continued)
I~Q-NIT 3 9'3.6-7 lagndeent 4 1 RHRSM Systee nd 8 3.7.1 BASES (continued)
APPLICABLE SAFETY ANALYSE'3 The RHRSW System removes heat from the suppression pool to lfmft the suppression pool temperature and primary containment pressure following a LOCA.This ensures that the pr1mary conta1nment can perform its function of limiting the release of radioactive materials to the environment following a LOCA.The ability of the RHRSW System to support long term cooling of the reactor or primary containment fs discussed in the FSAR, Chapters 5 and 14 (Refs.2 and 3, respectively).
These analyses explicitly assume that the RHRSW System will prov1de adequate cooling support to the equfpmcnt required for safe shutdown.These analyses include the evaluation of the long term primary containment response after a design basis LOCA.3)c x The safety analyses for long term cooling were performed for various combinations of RHR System failures and considers the number of units fueled.With one un1t fueled, the worst case single failure that would affect the performance of the RHRSW System is any failure that would disable two subsystems or pumps of the RHRSW System (e.g, the failure of an RHR Suppression Pool Cooling/Spray return line valve which effectively disables two RHRSW subsystems or pumps).With two and three units fueled, a worst case single failure could also include the loss of two RHRSW pumps caused by losing a 4 kV shutdown board since there are certain alignment configurations that allow two RHRSM pumps to be peered from the same 4 kV shutdown board.As discussed in the FSAR, Section 14.6.3.3.2 (Ref.4)for these analyses, manual initiation of thc OPERABLE RHRSW subsystems and the associated RHR System is assumed to occur 10 mi af OBA.The RHRSW flow assumed fn the analyses is gpm per pump with two pumps operating fn one loop.In this case, the aaxfoua suppression chamber water temper rc an pressure are 177'F (as reported in Reference an 4%4 psfg, respectively, well below the design temperature of 281'F and maximum allowable pressure of 62 psig.This is.also below the 200'F limit imposed by Oesfgn Criteria BFN-50-7064A (Ref.5)for all lant transients 1nvolving SRV op rat1ons.y,.ii.iq ik.u The RHRSW System"satisfies Critcrfon 3 of the NRC Policy Statement (Ref 6).BFH-UNIT 3 B 3.'-2 (continued Amend.-..".
k