ML061420528

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Technical Specifications Bases Unit 1 Manual, Rev. 74
ML061420528
Person / Time
Site: Susquehanna Talen Energy icon.png
Issue date: 05/11/2006
From:
Susquehanna
To: Gerlach R
Document Control Desk, Office of Nuclear Reactor Regulation
References
028401
Download: ML061420528 (26)
v • d • e


Text

May. 11, 2006 Page 1 of 2 MANUAL HARD COPY DISTRIBUTION DOCUMENT TRANSMITTAL 2006-23326 USER INFORMATION:

GERLACH*ROSE M EMPL#:028401 CA#: 0363 Address: NUCSA2 Phone#: 254-3194 TRANSMITTAL INFORMATION:

TO: GERLACH*ROSE M 05/11/2006 LOCATION: USNRC FROM: NUCLEAR RECORDS DOCUMENT CONTROL CENTER (NUCSA-2)

THE FOLLOWING CHANGES HAVE OCCURRED TO THE HARDCOPY OR ELECTRONIC MANUAL ASSIGNED TO YOU. HARDCOPY USERS MUST ENSURE THE DOCUMENTS PROVIDED MATCH THE INFORMATION ON THIS TRANSMITTAL. WHEN REPLACING THIS MATERIAL IN YOUR HARDCOPY MANUAL, ENSURE THE UPDATE DOCUMENT ID IS THE SAME DOCUMENT ID YOU'RE REMOVING FROM YOUR MANUAL. TOOLS FROM THE HUMAN PERFORMANCE TOOL BAG SHOULD BE UTILIZED TO ELIMINATE THE CHANCE OF ERRORS.

ATTENTION: "REPLACE" directions do not affect the Table of Contents, Therefore no TOC will be issued with the updated material.

TSBI - TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL REMOVE MANUAL TABLE OF CONTENTS DATE: 05/03/2006 ADD MANUAL TABLE OF CONTENTS DATE: 05/10/2006 CATEGORY: DOCUMENTS TYPE: TSB1 k4iXf

May. 11, 2006 Page 2 of 2 ID: TEXT 3.4.10 REMOVE: REV: 1 ADD: REV: 2 CATEGORY: DOCUMENTS TYPE: TSB1 ID: TEXT LOES REMOVE: REV:73 ADD: REV: 74 ANY DISCREPANCIES WITH THE MATERIAL PROVIDED, CONTACT DCS @ X3107 OR X3136 FOR ASSISTANCE. UPDATES FOR HARDCOPY MANUALS WILL BE DISTRIBUTED WITHIN 5 DAYS IN ACCORDANCE WITH DEPARTMENT PROCEDURES. PLEASE MAKE ALL CHANGES AND ACKNOWLEDGE COMPLETE IN YOUR NIMS INBOX UPON COMPLETION OF UPDATES. FOR ELECTRONIC MANUAL USERS, ELECTRONICALLY REVIEW THE APPROPRIATE DOCUMENTS AND ACKNOWLEDGE COMPLETE IN YOUR NIMS INBOX.

SSES MANUAL Manual Name: TSB-Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL Table Of Contents Issue Date: 05/10/2006 Procedure Name Rev Issue Date Change ID Change Number TEXT LOES 74 05/10/2006 Title: LIST OF EFFECTIVE SECTIONS TEXT TOC 9 04/18/2006 Title: TABLE OF CONTENTS TEXT 2.1.1 2 04/18/2006 Title: SAFETY LIMITS (SLS) REACTOR CORE SLS

/

TEXT 2.1.2 0 Title: SAFETY LIMITS (SLS) REACTOR SL TEXT 3.0 1 Title: LIMITING CONDITION FOR OPE TEXTTitle:

3.1.1 REACTIVITY CONTROL S MARGIN (SDM)

TEXT 3.1.2 11/15/2002 Title: REACTIVITY REACTIVITY ANOMALIES TEXT 3.1.3 1 07/06/2005 Title: REACTIV SYSTEMS CONTROL ROD OPERABILITY TEXT 3.1.4 2 04/18/2006 Title: REACTIVITY CONTROL SYSTEMS CONTROL ROD SCRAM TIMES 1 07/06/2005 TEXT 3.1.5 Title: REACTIVITY CONTROL SYSTEMS CONTROL ROD SCRAM ACCUMULATORS TEXT 3.1.6 2 04/18/2006 Title: REACTIVITY CONTROL SYSTEMS ROD PATTERN CONTROL Report Date: 05/10/06 Pagel1 Page of of 88 Report Date: 05/10/06

SSEB ~&A~UAIZ Manual Name: TSBt- V Manual Title: TECHNICAL SPECIFICATION BASES UNIT, 1 MANUAL TEXT 3.1.7 1 08/30/2005 Title: REACTIVITY CONTROL SYSTEMS STANDBY LIQUID CONTROL (SLC) SYSTEM TEXT 3.1.8 1 10/19/2005 Title: REACTIVITY CONTROL SYSTEMS SCRAM DISCHARGE VQLUME (SDV) VENT AND DRAIN VALVES TEXT 3.2.1 1 04/18/2006 Title: POWER DISTRIBUTION LIMITS AVERAGE PLANAR LINEAR HEAT GENERATION RATE (APLHGR)

TEXT 3.2.2 1 04/18/-2006 Title: POWER DISTRIBUTION LIMITS MINIMUM CRITICAL POWER RATIO (MCPR)

TEXT 3.2.3 0 11/15/2002 Title: POWER DISTRIBUTION LIMITS LINEAR HFEAT -GENERATION RATE (LHGR)

TEXT 3.2.4 2 04/12/2006 Title: POWER DISTRIBUTION LIMITS AVERAGE POWER RANGE MONITOR !(APRM) GAIN AND SETPOINTS()

TEXT 3.3.1.1 3 04/12/2006 Title: INSTRUMENTATION REACTOR PROTECTION SY*STEM (RPSI INSTRUMENTATION TEXT 3.3.1.2 1 04/12/2006 Title: INSTRUMENTATION SOURCE RANGE MONITOR (SRM) INSTRUMENTATION TEXT 3.3.2.1 2 04/12/2006, Title: INSTRUMENTATION CONTROL ROD BLOCK INSTRUMENTATION TEXT 3.3.2.2 0 11/15/2002. ,-

Title: INSTRUMENTATION FEEDWATER - MAIN TURBINE HIGH WATER LEVEL TRIP INSTRUMENTATION TEXT 3.3.3.1 4 05/03/2006 Title: INSTRUMENTATION POST ACCIDENT MONITORING (PAM) INSTRUMENTATION TEXT 3.3.3.2 1 04/18/2005 Title: INSTRUMENTATION REMOTE SHUTDOWN SYSTEM,.,:.

Page 2 of 8 Report Datev 05/10/06

SSES ! MANUAL Manual Name: TSB+/--

Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL-TEXT 3.3.4.1 0 11/15/2002 Title: INSTRUMENTATION END OF CYCLE RECIRCULATION PUMP TRIP (EOC-RPT) INSTRUMENTATION TEXT 3.3.4.2 0 11/15/2002 Title: INSTRUMENTATION ANTICIPATED TRANSIENT WITHOUT SCRAM RECIRCULATION PUMP TRIP (ATWS-RPT) INSTRUMENTATION TEXT 3.3.5.1 2 07/06/2005 Title: INSTRUMENTATION EMERGENCY CORE COOLING SYSTEM (ECCS) INSTRUMENTATION TEXT 3.3.5.2 0 11/15/2002'"

Title: INSTRUMENTATION REACTOR CORE ISOLATION COOLING (RCIC) SYSTEM INSTRUMENTATION TEXT 3.3.6.1 .1 11/09/2004-*

Title: INSTRUMENTATION PRIMARY CONTAINMENT ISOLATION INSTRUMENTATION TEXT 3.3.6.2 1 11/09/2004 Title: INSTRUMENTATION SECONDARY -CONTAINMENT ISOLATION INSTRUMENTATION TEXT 3.3.7.1 0 11/15/2002-Title: INSTRUMENTATION CONTROL ROOM EMERGENCY, OUTSIDE AIR SUPPLY (CREOAS) SYSTEM INSTRUMENTATION TEXT 3.3.8.1 1 09/02/2004 Title: INSTRUMENTATION',LOSS'OF POWER (LOP) INSTRUMENTATION; TEXT 3.3.8.2 0 11/15/2002 Title: INSTRUMENTATION REACTOR PROTECTION SYSTEM (RPS) ELECTRIC POWER 4MONITORING TEXT 3.4.1 3 04/12/2006' Title-PREACTOR-COOLANT SYSTEM,,RCS)' RECIRCULATION-LOOPS OPERATING TEXT 3.4.2 0 11/15/2002 Title: REACTOR COOLANT -SYSTEM (RCS)V-JET ,PUMP9 -

TEXT 3.4.3 01/16/2006 Title: REACTOR COOLANT SYSTEM (RCS) SAFETY/RELIEF-VALVES (S/RVS)

Page 3 of 8 Report Date: 05/10/06

SSES MANUAL Manual Name: TSBt-Manual Title: TECHNICAL SPECIFICATION BASES UNIT . MANUAL Q(wW TEXT 3.4.4 0 11/15/2002 Title: REACTOR COOLANT SYSTEM (RCS) RCS OPERATIONAL LEAKAGE TEXT 3.4.5 1 01/16/2006:-

Title: REACTOR COOLANT SYSTEM (RCS) RCS PRESSURE.ISOLATION VALVE (PIV) LEAKAGE TEXT 3.4.6 1 04/18/2005 Title: REACTOR COOLANT SYSTEMA(RCS) RCS LEAKAGE DETECTION INSTRUMENTATION TEXT 3.4.7 1 04/18/2005:,

Title: REACTOR COOLANT SYSTEM (RCS) RCS SPECIFIC ACTIVITY TEXT 3.4.8 1 04/18/200.5 Title: REACTOR COOLANT SYSTEM (RCS) RESIDUAL-HEAT REMOVAL (RHR)-SHUTDOWN COOLING SYSTEM

- HOT SHUTDOWN TEXT 3.4.9 0 11/15/2002 Title: REACTOR COOLANT SYSTEM (RCS) RESIDUAL HEAT REMOVAL (RHR). SHUTDOWN COOLING' SYSTEM&I)

- COLD SHUTDOWN TEXT 3.4.10 2 05/10/2006 Title: REACTORCOOLANT SYSTEM (RCS) RCS PRESSURE AND TEMPERATURE:T(P/T) LIMITS TEXT 3.4.11 0 11/15/2002 Title: REACTOR COOLANT SYSTEM (RCS) REACTOR STEAM DOMEIPRESSURE TEXT 3.5.1 2 01/16/2006 Title: EMERGENCY CORE COOLING SYSTEMS .(ECCS) AND-REACTOR CORE"ISOLATION COOLINGA(RCIC)

SYSTEM ECCS - OPERATING TEXT 3.5.2 0 11/15/2002, Title: EMERGENCY CORE COOLING SYSTEMS ,(ECCS) :AND REACTOR'CORE*ISOLATION COOLING (ACIC)

SYSTEM ECCS - SHUTDOWN TEXT 3.5.3 1 04/18/2005 Title: EMERGENCY CORE COOLING SYSTEMS (ECCS) AND REACTOR'CORE -ISOLATION COOLING (RCIC)

SYSTEM RCIC SYSTEM TEXT 3.6.1.1 0 11/15/2002 Title: CONTAINMENT SYSTEMS'PRIMARY CONTAINMENT Q

I 8 IgI4Ilof Re.o.. Dat:- 5/1/0 Page 4 - of 8 Report Date: 05/10/06

SSES MANUAL Manual Name: TSB+/--I Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL TEXT 3.6.1.2 0 11/15/2002 Title: CONTAINMENT SYSTEMS PRIMARY CONTAINMENT AIR LOCK TEXT 3.6.1.3 3 12/08/2005 Title: CONTAINMENT SYSTEMS PRIMARY CONTAINMENT ISOLATION VALVES (PCIVS)

TEXT 3.6.1.4 0 11/15/2002 Title: CONTAINMENT SYSTEMS CONTAINMENT PRESSURE TEXT 3.6.1.5 1 10/05/2005 Title: CONTAINMENT SYSTEMS DRYWELL AIR TEMPERATURE TEXT 3.6.1.6 0 11/15/2002 Title: CONTAINMENT SYSTEMS SUPPRESSION CHAMBER-TO-DRYWELL VACUUM BREAKERS TEXT 3.6.2.1 0 11/15/2002

' Title: CONTAINMENT:SYSTEMS SUPPRESSIONPOOL AVERAGE TEMPERATURE TEXT 3.6.2.2 0 11/15/2002 Title: CONTAINMENT SYSTEMS:SUPPRESSION.POOL WATER LEVEL TEXT 3.6.2.3 1 01/16/2006!

Title: CONTAINMENT SYSTEMSRESIDUAL HEAT REMOVAL'(RHR) SUPPRESSION POOL COOLING TEXT 3.6.2.4 0 11/15/2002 Title: CONTAINMENT-ZYSTEMS RESIDUAL HEAT REMOVALA(RHR) SUPPRESSION POOL-SPRAY TEXT 3.6.3.1 1 04/18/2005, Title: CONTAINMENT SYSTEMS.PRIMARY CONTAINMENT HYDROGEN RECOMBINERS.

TEXT 3.6.3.2 1 04/18/2005-',,

Title: CONTAINMENT SYSTEMS DRYWELL. AIR FLOW SYSTEM I0 3.6.3.3 TEXT 11/15/2002...

Title: CONTAINMENT SYSTEMS PRIMARY CONTAINMENT OXYGEN CONCENTRATION Report Date: 05/10/06 PageS5 Page , of of 88 Report Date: 05/10/06

SSES ANUAL Manual Name: TSBt&

Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL TEXT 3.6.4.1 5 03/16/2006 Title: CONTAINMENT SYSTEMS SECONDARY CONTAINMENT TEXT 3.6.4.2 2 01/03/2005 Title: CONTAINMENT SYSTEMS SECONDARY CONTAINMENT ISOLATION VALVES (SCIVS)

TEXT 3.6.4.3 3 10/24/2005 Title: CONTAINMENT SYSTEMS STANDBY GAS TREATMENT (SGT). SYSTEM TEXT 3.7.1 0 11/15/2002 Title: PLANT SYSTEMS RESIDUAL HEAT REMOVAL SERVICE WATER (RHRSW) SYSTEM ANDýTHE ULTIMATE HEAT SINK (UHS)

TEXT 3.7.2 1 11/09/2004 Title: PLANT SYSTEMS EMERGENCY SERVICE WATER (ESW) SYSTEM TEXT 3.7.3 0 11/15/2002 Title: PLANT SYSTEMS CONTROL ROOM EMERGENCY-OUTSIDE AIR SUPPLY *(CREOAS) SYSTEM-TEXT 3.7.4 0 11/15/2002-:

Title: PLANT SYSTEMS CONTROL ROOM FLOOR: COOLING SYSTEM TEXT 3.7.5 0 11/15/2002 Title: PLANT SYSTEMS MAIN CONDENSER OFFGAS TEXT 3.7.6 1 01/17/2005.,

Title: PLANT SYSTEMS MAIN TURBINE BYPASS SYSTEM' TEXT 3.7.7 0 11/15/2002.

Title: PLANT SYSTEMS .SPENT FUEL STORAGE POOL WATER .LEVEL TEXT 3.8.1 4 04/18/2006 Title: ELECTRICAL POWER SYSTEMS AC SOURCES - OPERATING TEXT 3.8.2 0 11/15/2002 Title: ELECTRICAL POWER SYSTEMS AC SOURCES - SHUTDOWN

! i i ll l II __I "mi i1 Page 6 , of 8 Report'Date: 05/10/06

SSES HAmYkti Manual Name: TSBI' Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL TEXT 3.8.3 0 11/15/2002 Title: ELECTRICAL POWER SYSTEMS DIESEL FUEL OIL, LUBE OIL, AND STARTING AIR TEXT 3.8.4 0 11/15/2002 Title: ELECTRICAL POWER SYSTEMS DC SOURCES - OPERATING TEXT 3.8.5 0 11/15/2002 Title: ELECTRICAL POWER SYSTEMS DC SOURCES - SHUTDOWN TEXT 3.8.6 0 11/15/2002 Title: ELECTRICAL POWER SYSI rEMS BATTERY CELL PARAMETERS TEXT 3.8.7 1 10/05/2005 Title: ELECTRICAL POWER SYST'EMS DISTRIBUTION SYSTEMS - OPERATING TEXT 3.8.8 0 11/15/2002 Q Title: ELECTRICAL POWER SYST'EMS DISTRIBUTION SYSTEMS SHUTDOWN TEXT 3.9.1 0 11/15/2002 Title: REFUELING C)PERATIONS REFUELING;EQUIPMENT INTERLOCKS TEXT 3.9.2 0 11/15/2002 -

Title: REFUELING OPERATIONS REFUEL POSITION ONE-ROD-OUT INTERLOCK TEXT 3.9.3 0 11/15/2002' Title: REFUELING OPERATIONS CONTROL ROD[POSITION" TEXT 3.9.4 0 11/15/2002 Title: REFUELING OPERATIONS CONTROL-ROD POSITION INDICATION TEXT 3.9.5 0 11/15/2002 Title: REFUELING OPERATIONS CONTROL ROD OPERABILITY -REFUELING TEXT 3.9.6 0 11/15/2002 Title: REFUELING OPERATIONS REACTOR PRESSURE VESSEL (RPV) WATER LEVEL e 8ReportiDat:l05/10/0Ia iof Page 7 of 8 Report Date: 05/10/06

SSES M4ANUALi (p

t~.

Manual Name: TSBI*

Manual Title: TECHNICAL SPECIFICATION BASES UNIT 1 MANUAL 0

TEXT 3.9.7 0 11/15/2002 Title: REFUELING OPERATIONS RESIDUAL HEAT REMOVAL (RHR) HIGH WATER LEVEL TEXT 3.9.8 0 11/15/2002 Title: REFUELING OPERATIONS RESIDUAL HEAT REMOVAL (RHR) - LOW WATER LEVEL TEXT 3.10.1 0 11/15/2002 Title: SPECIAL OPERATIONS INSERVICE LEAK AND HYDROSTATIC TESTING OPERATION TEXT 3.10.2 0 11/15/2002 Title: SPECIAL OPERATIONS REACTOR MODE SWITCH INTERLOCK TESTING TEXT 3.10.3 0 11/15/2002 Title: SPECIAL OPERATIONS SINGLE CONTROL ROD WITHDRAWAL - HOT SHUTDOWN TEXT 3.10.4 0 11/15/2002, Title: SPECIAL OPERATIONS SINGLE CONTROL ROD' WITHDRAWAL'- COLD' SHUTDOWN Q..

TEXT 3.10.5 0 11/15/2002 .

Title: SPECIAL OPERATIONS SINGLE CONTROL ROD DRIVE (CRD)Y- RMVAI .- REFUELING TEXT 3.10.6 0 11/15/2002 Title: SPECIAL OPERATIONS MULTIPLE CONTROL ROD WITHDRAWAL -- REFUELING TEXT 3.10.7 1 04/1-&12006' Title: SPECIAL OPERATIONS CONTROL ROD TESTING OPERATING.:

TEXT 3.10.8 1 04/12-/2006 .  :

Title: SPECIAL OPERATIONS SHUTDOWN MARGIN (SDM) TEST- REFUELING Repo~rt. Date: 05/10/06 Page88 Page of

ý of 88 Report Date:.05/10/66

SUSQUEHANNA STEAM ELECTRIC STATION IJST OF EFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision TOC Table of Contents 9 B 2.0 SAFETY LIMITS BASES Page B 2.0-1 0 Page TS/ B2.0-2 3 Page TS/ B2.0-3 4 Pages TS / B 2.0-4 and TS / B 2.0-5 3 Page TS I B 2.0-6 1 Pages B 2.0-7 through B 2.0-9 - 0 B 3.0 LCO AND SR APPLICABILITY BASES Pages B 3.0-1 through B 3.0-4 , 0 Pages TS / B 3.0-5 through TS / B 3.0-7 1 Pages TS / B 3.0-8 through TS / B 3.0-9 22 Pages TS / B 3.0-10 through TS I B 3.0-12 1 Pages TS / B 3.0-13 throughTS/B 5b-15 2 Pages TS / B 3.0-16 and TS / B 3..0-1 7.. 0 B 3.1 REACTIVITY CONTROL BASES Pages B 3.1-1 through B 4( 0 Page TSI/B 3.1-5.

Pages TS / B 3.1-6 andTS (B 3.1-7 2 Pages B 3.1-8 through B 3.1-13, 0 Page TS / B3.1.,14 Pages B 3.1-16 throuugh B 3.1-22 0 Page TS 3-1-23 1 Pages B. 3.1-24 through B 3.1-27 0 PageTS B 31.-28 2 Page TS B B3.1-~29 1 PagesB3.-30 throughKB 3.1-33 0 Pages TS I B3.3-34 through TS / B 3.3-36 1 Pagels' TS I B 3.1-37 and TS IB 3.1-38 2 Pages B 3.1-39 through B 3.1-44 0 Page TS / B 3.1-45 1 Pages B 3.1-46 and B 3.1-47 0 Pages TS / B 3.1-48 and TS / B 3.1-49 1 Page B 3.1-50 - 0 Page TS I B 3.1-51 1 B 3.2 POWER DISTRIBUTION LIMITS BASES Page TS / B 3.2-1 1 Pages TS / B 3.2-2 through TS I B3.2-6 2 TSIBLOES-1 Revision 74 SUSQUEHANNA - UNIT SUSQUEHANNA -

UNITrjI TS / B LOES-1 Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION LIST OF EFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision Page B 3.2-7 0 Pages TS / B 3.2-8 and TS B 3.2-9 2 Page TS / B 3.2.10 1 Page TS / B 3.2-11 2 Page B 3.2-12 0 Page TS / B 3.2-13 2 Pages B 3.2-14 and B 3.2-15 0

  • Page TS / B 3.2-16 2 Page B 3.2-17 0 Page TS/B 3.2-18 1 Page TS/B 3.2-19 4 B 3.3 INSTRUMENTATION Pages TS / B 3.3-1 through TS I B 3.3-4 1 Page TS / B 3.3-5 2 Page TS/ B 3.3-6 1 Page TS I B 3.3-7 3 Page TSI B 3.3-7a 0 Pages TS I B 3.3-8 through TS I B 3.3-12 3 Pages TS / B 3.3-12a through TS / B 3.3-12c 0 Page TS I B 3.3-13 1 Page TS I B 3.3-14 3 Pages TS / B 3.3-15 and TS / B 3.3-16 1 Pages TS I B 3.3-17 and TS / B 3.3-18 3 Page TS / B 3.3-19 1 Pages TS / B 3.3-20 through TS I B 3.3-22 2 Page TS / B 3.3-22a 0 Pages TS / B 3.3-23 and TS I B 3.3-24 2 Pages TS / B 3.3-24a and TS / B 3.3-24b 0 Pages TS / B 3.3-25 and TS / B 3.3-26 2 Page TS / B 3.3-27 1 Pages TS / B 3.3-28 through TS / B 3.3-30 3 Page TS / B3.3-30a 0 Page TS / B 3.3-31 3 Page TS / B 3.3-32 5 Pages TS / B 3.3-32a and TS I B 3.3-32b 0 Page TS I B3.3-33 5 Page TS / B 3.3-33a 0 Page TS I B 3.3-34 1 Pages TS I B 3.3-35 and TS / B 3.3-36 2 Pages TS I B 3.3-37 through TS / B 3.3-43 1 Page TS /B 3.3-44 3 TS LOES-2 I B LOES-2 Revision 74 SUSQUEHANNA-UNITI SUSQUEHANNA - UNIT 1 TS /B Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION LIST OFEFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision Pages TS I B 3.3-45 through TS I B3.3-49 2 Page TS / B 3.3-50 3 Page TS / B 3.3-51 2 Pages TS I B 3.3-52 and TS I B 3.3-53 1 Page TS / B 3.3-54 3 Pages B 3.3-55 through B 3.3-63 0 Pages TS / B 3.3-64 and TS / B 3.3-65 2 Page TS I B 3.3-66 4 Page TS / B 3.3-67 3 Pages TS /.B 3.3-68 and TS I B 3.3-69 4 Pages TS I B3.3-70 and TS / B 3.3-71 3 Pages TS / 3.3-72 through TS /3.3-75 2 Page TS / B 3.3-75a 5 Page TS / B 3.3-75b 6 PageTS / B 3.3-75c 4 Pages B 3.3-76 through 3.3-77 0 Page TS / B 3.3-78 1 Pages.B 3.3-79 through B 3.3-89 0 Page TS / B 3.3-90 1 Page B 3.3-91 0 Pages TS [B 3.3-92 through TS / B 3.3-100 1 Pages B 3.3-101 through B 3.3-103 0 Page TS / B 3.3-104 1 Pages B 3.3-105 and B 3.3-106 0 Page TS 1B 3.3-107 1 Page B 3.3-108 0 Page TS / B 3.3-109 1 Pages B 3.3-110 and B 3.3-111 0 Pages TS I B3.3-112 and TS / B 3.3-112a 1 Pages TS / B3.3-113 through TS / B 3.3-115 1 Page TS / B 3.3-116 2 Page TS / B 3.3-117 1 Pages B 3.3-118 through B 3.3-122 0 Pages TS / B 3.3-123 and TS I B 3.3-124 1 Page TS I B 3.3-124a 0 Page B 3.3-125 0 Pages TS / B 3.3-126 and TS / B 3.3-127 1 Pages B 3.3-128 through B 3.3-130 0 Page TS B3.3-131 1 Pages B 3.3-132 through B 3.3-137 0 Revision 74 SUSQUEHANNA - UNIT SUSQUEHANNA - UNIT II TS / B LOES-3 TS/B LOES-3 Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION UST OF EFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision Page TS / B 3.3-138 1 Pages B 3.3-139 through B3.3-149 0 Pages TS / B 3.3-150 through TS I B 3.3-162 1 Page TS / B 3.3-163 2 Pages TS /.B 3.3-164 through TS / B 3.3-177 1 Pages TS / B 3.3-178 and TS /B3.3-79 2 Pages TS /B 3.3-179a and TS / B 3.3-179b 2 Page TS/ B 3.3-179c 0 Page TS IB 3.3-180 1 Page TS /B 3.3-181 2 Pages TS /B 3.3-182 through TS B 3.3-186 1 Pages TS /B 3.3-187 and TS / B 3.3-188 2 Pages TS /B 3.3-189 through TS / B 3.3-191 1 Pages B 3.3-192 through B3.3-204 0 Page TS / B 3.3-205 1 Pages B 3.3-206 through B 3.3-219 0 B 3.4 REACTOR COOLANT SYSTEM BASES Pages B3.4-1 and B 3.4-2 0 Pages TS /B 3.4-3 and Page TS /B 3.4-4 4 Pages TS I B 3.4-5 through TS /B 3.4-9 2 Pages B 3.4-10 throughB 3.4-14 0 Page TS / B 3.4-15 1 Pages TS / B 3.4-16 through TS /8 3.4-18 2 Pages B 3.4-19 through B 3.4-27 0 Pages TS / B 3.4-28 and TS /:B 3.4-29 1 Pages B 3.4-30 and B 3.4-31 0 Page TS / B 3.4-32 1 Pages B 3.4-33 through B 3.4-36 0 Page TS / B 3.4-37 1 Pages B 3.4-38 through B 3.4-40 0 Page TS / 8 3.4-41 1 Pages B 3.4-42 through B 3.4-48 0 Page TS / B 3.4-49 3 Page TS / B 3.4-50 1 Page TS /83.4-51 3 Page TS/ B 3.4-52 2 Page TS / B 3.4-53 1 Pages TS /B 3.4-54 and TS /B 3.4-55 2 Page TS / B 3.4-56 1 Page TS / B 3.4-57 3 Pages TS / B 3.4-58 through TS /B 3.4-60 I TS/BLOES-4 Revision 74 SUSQUEHANNA -

UNIT I1 SUSQUEHANNA - UNIT TS / B LOES-4 Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION LIST OF EFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision B 3.5 ECCS AND RCIC BASES Pages B3.5-1 and B 3.5-2 0 Page TS / B 3.5-3 2 Page TS / B 3.5-4 1 Page TS/ B 3.5-5 2 Page TS/ B 3.5-6 1 Pages B 3.5-7 through B 3.5-10 0 Page TS / B 3.5-11 1 Page TS / B 3.5-12 0 Page TS / B 3.5-13 1 Page TS / B 3.5-14 and TS /B 3.5-15 0 Pages TS / B 3.5-16 through TS / B3.5-18 1 Pages B 3.5-19 through B 3.5-24 0 Page TS / B 3.5-25 1 Pages TS / B 3.5-26 and TS I B 3.5-27 1 Pages B 3.5-28 through B 3.5-31 0 B 3.6 CONTAINMENT SYSTEMS BASES Page TS I B 3.6-1 2 Page TS IB 3.6-1a 3 Pages TS / B 3.6-2 through TS I B 3.6-5 2 Page TS / B3.6-6 3 Pages TS / B 3.6-6a andTS / B3.6-6b 2 Page TS / B 3.6-6c 0 Pages B3.6-7 through B 3.6-14 0 Page TS / B 3.6-15 2 Pages TS /B 3.6-15a and TS B 3.6-15b 0 Page B 3.6-16 0 Page TS /B 3.6-17 1 Page TS / B 3.6-17a 0 Pages TS / B 3.6-18 and TS B 3.6-19 0 Page TS / B 3.6-20 1 Page TS /8B 3.6-21 2 Page TS 1 B 3.6-22 1 Page TS / B 3.6-22a 0 Page TS/B 3.6-23 1 Pages TS / B 3.6-24 through TS /B 3.6-25 0 Page TS / B 3.6-26 1 Page TS / B 3.6-27 2 Page TS /B 3.6-28 5 Pages TS / B 3.6-29 and TS /B 3.6-30 1 Page TS / B 3.6-31 3 Revision 74 SUSQUEHANNA - UNIT SUSQUEHANNA - UNIT II TS B LOES-5 TS // B LOES-5 Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION LIST OF EFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision Page B 3.6-32 0 Page TS./ B 3.6-33 1 Pages B 3.6-34 and B 3.6-35 0 Page TS_/ B 3.6-36 1 Page B 3.6-37 0 Page TS / B 3.6-38 1 Page B 3.6-39 0 Page TS / B 3.6-40 4 Pages B 3.6-41 through 'B 3.6-43 3 Pages TS / B 3.6-44 and TS I B 3.6-45 1 Page TS / B 3.6-46 2 Pages TS / B 3.6-47 through TS I B 3.6-51 1 Page TS B3.6-52 2 Pages B 3.6-53 through B 3.6-63 0 Pages TS / B 3.6-64 and TS / B 3.6-65 1 Pages B 3.6-66 through B 3.6-72 0 Page TS / B 3.6-73 1 Pages. B 3.6-74 through B 3.6-77 0 Page TS / B3.6-78 1 Pages B3.6-79 through B 3.3.6-83 0 Page TS / B 3.6-84 3 Page TS / B 3.6-85 2 Page TS / B 3.6-86 3 Page TS / B 3.6-87 1 Pages TS / B 3.6-88 and TS I B 3.6-88a 2 Page TS / B 3.6-89 3 Page TS / B 3.6-90 2 Page TS / B.3.6-91 3 Pages TS / B3.6-92 through TS B3.6-96 1 Page TS / B 3.6-97 2 Pages TS I B3.6-98 and TS / B3.6-99 1 Page TS i B 3.6-100 2 Pages TS I B 3.6-101 and TS I B 3.6-102 1 Pages TS / B 3.6-103 and-TS / B 3.6-104 2 Page TS / B 3.6-105 3 Pages TS I B 3.6-106 and TS I B 3.6-107 2 B 3.7 PLANT SYSTEMS BASES Pages TS I B 3.7"1 through TS I B 3.7-6 2 Page TS / B 3.7-6a 2 Pages TS / B 3 3.7-6b and TS I B 3.7-6c 0 Page TS / B3.7-7 2 Pages TS / B 3.7-8 through TS I B 3.7-13 1 Pages TS / B 3.7-14 through TS / B 3.7-18 2 m

TS/BLOES-6 Revision 74 SUSQUEHANNA UNIT SUSQUEHANNA- -

UNIT 11 TS / BLOES-6 Revision 74

SUSQUEHANNA STEAM ELECTRIC STATION LIST OFEFFECTIVE SECTIONS (TECHNICAL SPECIFICATIONS BASES)

Section Title Revision Page TS I B 3.7-18 . 0 Pages TS / B 3.7-19 through TS I B 3.7-23 1 Pages B 3.7-24 through B 3.7-26 0 Pages TS / B 3.7-27 through TS 1/B 3.7-29 4 Page TS / B 3.7-30 2 Pages B3.7-31 through B 3.7-33 0 B 3.8 ELECTRICAL POWER SYSTEMS BASES Pages TS / B 3.8-1 through TS / B 3.8-3 2 Page TS / B 3.8-4 3 Pages TS / B 3.8-4a and TS I B 3.8-4b 0 Page TS/ B 3.8-5 4 Page TS B 3.8-6 3 Pages TS / B3.8-7 through TS/B 3.8-8 2 Page TS I B 3.8-9 4 Page TS /B 3.8-10 3 Pages TS / B3.8-11 and TS I B 3.8-17 2 Page TS / B 3.8-18 3 Pages TS / B 3.8-19 through TS/B 3.8-21 2 Pages TS / B 3.8-22 and TS / B 3.8-23 3 Pages TS / B 3.8-24 through TS / B3.8-37 2 Pages B 3.8-38 through B3.8-53 0 Pages TS 1B 3.8-54 through TS / B 3.8-61 1 Pages TS / B3.8-62 and TS / B 3.8-63 2 Page TS /B 3.8-64 1 Page TS /B 3.8-65 2 Pages B 3.8-66 through B 3.8-80 0 Page TS / B 3.8-81 1 Pages B 3.8-82 through B 3.8-90 0 B 3.9 REFUELING OPERATIONS BASES Pages TSI B 3.9-1 and TS / B 3.9-la 1 Pages TS / B3.9-2 through TS/B 3.9-4 1 Pages B 3.9-5 through B 3.9-30 0 B 3.10 SPECIAL OPERATIONS BASES Page TS / B 3.10-1 1 Pages B 3.10-2 through B 3.10-31 0 Page TS / B3.10-32 2 Page B 3.10-33' 0 Page TS /B 3.10-34 1 Pages B 3.10-35 and B 3.10-36 0 Page TS I B 3.10-37 1 Page TS t B3.10-38, 2 TSB1 text LOES 0510312006 Revision 74 SUSQUEHANNA - UNI - UNIT II 15/ B LOES-7 TS / B LOES-7 Revision 74

PPL Rev. 2 RCS P/T'Limits B 3.4.10 B 3.4 REACTOR COOLANT SYSTEM (RCS)

B 3.4.10 RCS Pressure and Temperature (P/T) Limits BASES BACKGROUND All components of the RCS are designed to withstand effects of cyclic loads due to system pressure and temperature changes. These loads are introduced by startup (heatup) and shutdown (cooldown) operations, power transients, and reactor trips. This LCO limits the pressure and temperature changes during RCS heatup and cooldown, within the design assumptions and the stress limits for cyclic operation.

This Specification contains P/T limit curves for heatup, cooldown, and inservice leakage and hydrostatic testing, and limits for the maximum rate of change of reactor coolant temperature. The heatup curve provides limits for both heatup and criticality.

Each P/T limit curve defines an acceptable region for normal operation.

The usual use of the curves is operational guidance during heatup or cooldown maneuvering, when pressure and temperature indications are monitored and compared to the applicable curve to determine that operation is within the allowable region.

The LCO establishes operating limits that provide a margin to brittle failure of the reactor vessel and piping of the reactor coolant pressure boundary (RCPB). The vessel is the component most subject to brittle failure.

Therefore, the LCO limits apply mainly to the vessel.

10 CFR 50, Appendix G (Ref. 1), requires the establishment of P/T limits for material fracture toughness requirements of the RCPB materials.

Reference I requires an adequate margin to brittle failure during normal operation, anticipated operational occurrences, and system hydrostatic tests. It mandates the use of the ASME Code, Section Xl, Appendix G (Ref. 2).

The actual shift in the RTNDT of the vessel material will be established periodically by removing and evaluating the irradiated reactor vessel material specimens, in accordance with ASTM E 185 (Ref. 3) and Appendix H of 10 CFR 50 (Ref. 4). The operating P/T limit curves will be adjusted, as necessary, based on the evaluation findings and the recommendations of RG 1.99, "Radiation Embrittlement of Reactor Vessel Materials" (Ref. 5). The calculations to determine neutron fluence will be developed using the BWRVIP RAMA code methodology, which is NRC approved and meets the intent of RG 1.190, "Calculational and Dosimetry Methods for Determining Pressure Vessel Neutron Fluence" (Ref. 11).

See FSAR Section 4.1.4.5 for determining fluence (Ref. 12).

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-49 Revision 3

PPL Rev. 2 RCS P/T Limits B 3.4.10 BASES BACKGROUND The P/T limit curves are composite curves established by superimposing (continued) limits derived from stress analyses of those portions of the reactor vessel and head that are the most restrictive. At any specific pressure, temperature, and temperature rate of change, one location within the reactor vessel will dictate the most restrictive limit. Across the span of the P/T limit curves, different locations are more restrictive, and, thus, the curves are composites of the most restrictive regions.

The heatup curve used to develop the P/T limit curve composite represents a different set of restrictions than the cooldown curve used to develop the P/T limit curve composite because the directions of the thermal gradients through the vessel wall are reversed. The thermal gradient reversal alters the location of the tensile stress between the outer and inner walls.

The cniticality limits include the Reference 1 requirement that they be at least 40°F above the heatup curve or the cooldown curve and not lower than the minimum permissible temperature for the inservice leakage and hydrostatic testing.

The consequence of violating the LCO limits is that the RCS has been operated under conditions that can result in brittle failure of the RCPB, possibly leading to a nonisolable leak or loss of coolant accident. In the event these limits are exceeded, an evaluation must be performed to determine the effect on the structural integrity of the RCPB components.

ASME Code, Section Xl, Appendix E (Ref. 6), provides a recommended methodology for evaluating an operating event that causes an excursion outside the limits.

APPLICABLE The P/T limits are not derived from Design Basis Accident (DBA)

SAFETY analyses. They are prescribed during normal operation to avoid ANALYSES encountering pressure, temperature, and temperature rate of change conditions that might cause undetected flaws to propagate and cause nonductile failure of the RCPB, a condition that is unanalyzed.

Reference 7 establishes the methodology for determining the P/T limits.

Since the P/T limits are not derived from any DBA, there are no acceptance limits related to the P/T limits. Rather, the P/T limits are acceptance limits themselves since they preclude operation in an unanalyzed condition.

RCS P/T limits satisfy Criterion 2 of the NRC Policy Statement (Ref. 8). I

,(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-50 Revision 1

PPL Rev. 2 RCS P/T Limits B 3.4.10 BASES APPLICABLE The Effective Full Power Years (EFPY) shown on the curves are SAFETY approximations of the ratio of the energy that has been and is anticipated ANALYSES to be generated in a year to the'energy that could have been generated if (continued) the unit ran at original thermal power rating of 3293 MWT for the entire year. These values are based on fluence limits that are not to be exceeded.

LCO The elements of this LCO are:

a. RCS pressure and temperature are to the right of the applicable curves specified in Figures 3.4.10-1 through 3.4.10-3 and within the applicable heat-up or cool down rate specified in SR 3.4.10.1 during RCS heatup, cooldown, and inservice leak and hydrostatic testing;
b. The temperature difference between the reactor vessel bottom head coolant and the reactor pressure vessel (RPV) coolant is _ 1450 F during recirculation pump startup, and during increases in THERMAL POWER or loop flow while operating at low THERMAL POWER or loop flow;
c. The temperature difference between the reactor coolant in the respective recirculation loop and in the reactor vessel is _ 50OF during recirculation pump startup, and during increases in THERMAL POWER or loop flow while operating at low THERMAL POWER or loop flow;
d. RCS pressure and temperature are to the right of the criticality limits specified in Figure 3.4.10-3 prior to achieving criticality; and
e. The reactor vessel flange and the head flange temperatures are >_ 70OF when tensioning the reactor vessel head bolting studs.

These limits define allowable operating regions and permit a large number of operating cycles while also providing a wide margin to nonductile failure.

The P/T limit composite curves are calculated using the worst case of material properties, stresses, and temperature change rates anticipated under all heatup and cooldown conditions. The design calculations account for the reactor coolant fluid temperature impact on the inner wall of the vessel and the temperature gradients through the vessel wall.

Because these fluid temperatures drive the vessel wall temperature gradient, monitoring reactor coolant temperature provides a conservative method of ensuring the P/T limits are not exceeded. Proper monitoring of vessel temperatures to assure compliance with brittle fracture temperature limits and vessel thermal stress limits during normal heatup and cooldown, and during inservice leakage and hydrostatic testing, is established in PPL Calculation EC-062-0573 (Ref. 9). For P/T curves A, B, and C, the bottom head drain line coolant temperature should be monitored and maintained to the right of the most limiting curve.

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-51 Revision 3

PPL Rev. 2 RCS P/T Limits B 3.4.10 BASES LCO Curve A must be used for any ASME Section III Design Hydrostatic Tests (continued) performed at unsaturated reactor conditions. Curve A may also be used for ASME Section Xl inservice leakage and hydrostatic testing when heatup and cooldown rates can be limited to 20°F in a one-hour period.

Curve A is based on pressure stresses only. Thermal stresses are assumed to be insignificant. Therefore, heatup and cooldown rates are limited to 20°F in a one-hour period when using Curve A to ensure minimal thermal stresses. The recirculation loop suction line temperatures should be monitored to determine the temperature change rate.

Curves B and C are to be used for non-nuclear and nuclear heatup and cooldown, respectively. In addition, Curve B may be used for ASME Section Xl inservice leakage and hydrostatic testing, but not for ASME Section III Design Hydrostatic Tests performed at unsaturated reactor conditions. Heatup and cooldown rates are limited to 100OF in a one-hour period when using Curves B and C. This limits the thermal gradient.

through the vessel wall, which is used to calculate the thermal stresses in the vessel wall. Thus, the LCO for the rate of coolant temperature'change limits the thermal stresses and ensures the validity of the P/T curves. The vessel beltline fracture analysis assumes a 100°F/hr coolant heatup or cooldown rate in the beltline area. The 100°F limit in a one-hour period applies to -thecoolant in the beltline region, and takes into account the thermal inertia of the vessel wall. Steam dome saturation temperature (TsAT), as derived from steam dome pressure, should be-monitored to determine the beltline temperature change rate at temperatures above 212 0 F. At temperatures below 212 0 F, the recirculation loop suction line temperatures should be monitored.

Violation of the limits places the reactor vessel outside of the bounds of the stress analyses and can increase stresses in other RCS components.

"The consequences depend on several factors, as follows:

a. The severity pf.the departure from the allowable operating pressure temperature 'egime or the severity of the rate of change of temperature;
b. The length ol time the limits were violated (longer violations allow the temperature 3radient in the thick vessel walls to become more pronounced) and
c. The existen s, sizes, and orientations of flaws in the vessel material.

APPLICABILITY The potential for violating a P/T limit exists at all times. For example, P/T limit violations could result from ambient temperature conditions that result in the reactor ve sel metal temperature being less than the minimum allowed tempera ture for boltup. Therefore, this LCO is applicable even when fuel is not oaded in the core.

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-52 Revision 2

PPL Rev. 2 RCS PJT Limits B 3.4.10 BASES (continued)

ACTIONS A.1 and A.2 Operation outside the P/T limits while in MODES 1, 2, and 3 must be corrected so that the RCPB is returned to a condition that has been verified by stress analyses.

The 30 minute Completion Time reflects the urgency of restoring the parameters to within the analyzed range. Most violations will not be severe, and the activity can be accomplished in this time in a controlled manner.

Besides restoring operation within limits, an evaluation is required to determine if RCS operation can continue. The evaluation must verify the RCPB integrity remains acceptable and must be completed if continued operation is desired. Several methods may be used, including comparison with pre-analyzed transients in the stress analyses, new analyses, or inspection of the components.

ASME Code, Section Xl, Appendix E (Ref. 6), may be used to support the evaluation. However, its use is restricted to evaluation of the vessel beltline.

The 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Completion Time is reasonable to accomplish the evaluation of a mild violation. More severe violations may requirespecial, event specific stress analyses or inspections. A favorable evaluation must be completed if continued operation is desired.

Condition A is modified by a Note requiring Required Action A.2 be completed whenever the Condition is entered. The Note emphasizes the need to perform the evaluation of the effects of the excursion outside the allowable limits. Restoration alone per Required Action A.1 is insufficient because higher than analyzed stresses may have occurred and may have affected the RCPB integrity.

B.1 and B.2 If a Required Action and associated Completion Time of Condition A are not met, the plant must be placed in a lower MODE because either the RCS remained in an unacceptable P/T region for an extended period of increased stress, or a sufficiently severe event caused entry into an unacceptable region. Either possibility indicates a need for more careful examination of the event, best accomplished with the RCS at reduced pressure and temperature. With the reduced pressure and temperature conditions,4the possibility of propagation of undetected flaws is decreased.

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-53 Revision I

PPL Rev. 2 S-- . RCS PJT Limits 83.4.10 BASES ACTIONS B.1 and B.2 (continued)

Pressure and temperature are reduced by placing the plant in at least MODE 3 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in MODE 4 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The allowed Completion Times are reasonable, based on operating experience, to reach the required plant conditions from full power conditions in an orderly manner and without challenging plant systems.

C.1 and C.2 Operation outside the P/T limits in other than MODES 1, 2, and 3 (including defueled conditions) must be corrected so that the RCPB is returned to a condition that has been verified by stress analyses. The Required Action must be initiated without delay and continued until the limits are restored.

Besides restoring the P/T limit parameters to within limits, an evaluation is required to determine if RCS operation is allowed. This evaluation must verify that the RCPB integrity is acceptable and must be completed before approaching criticality or heating up to > 200°F. Several methods may be used, including comparison with pre-analyzed transients, new analyses, or inspection of the components. ASME Code,Section XI, Appendix E (Ref. 6), may be used to support the evaluation; however, its use is restricted to evaluation of the beltline.

SURVEILLANCE SR 3.4.10.1 REQUIREMENTS Verification that operation is within limits (i.e., to the right of the applicable curves in Figures 3.4.10-1 through 3.4.10-3) is required every 30 minutes when RCS pressure and temperature conditions are undergoing planned changes. This Frequency is considered reasonable in view of the control room indication available to monitor RCS status. Also, since temperature rate of change limits are specified in hourly increments, 30 minutes permits a reasonable time for assessment and correction of minor deviations.

Surveillance for heatup, cooldown, or inservice leakage and hydrostatic testing may be discontinued when the criteria given in the relevant plant procedure for ending the activity are satisfied.

This SR has been modified with a Note that requires this Surveillance to be performed only during system heatup and cooldown operations and inservice leakage and hydrostatic testing.

(continued)

SUSQUEHANNA - UNIT I TS / 8 3.4-54 Revision 2

PPL Rev. 2

REQUIREMENTS Notes to the acceptance criteria for heatup and cooldown rates ensure that more restrictive limits are applicable when the P/T limits associated with hydrostatic and inservice testing are being applied.

SR 3.4.10.2 A separate limit is used when the reactor is approaching criticality.

Consequently, the RCS pressure and temperature must be verified within the appropriate limits (i.e., to the right of the criticality curve in Figure 3.4.10-3) before withdrawing control rods thatwill make the reactor critical.

Performing the Surveillance within 15 minutes before control rod withdrawal for the purpose of achieving criticality provides adequate assurance that the limits will not be exceeded between the time of the Surveillance and the time of reactor criticality... Although no Surveillance Frequency is specified, the requirements of SR 3.4.10.2 must be met at all times when the reactor is critical.

SR 3.4.10.3 and SR 3.4.10.4 Differential temperatures within the applicable limits ensure that thermal stresses resulting from the startup of an idle recirculation pump will not exceed design allowances. In addition, compliance with these limits ensures that the assumptions of the analysis for the startup of an idle recirculation loop (Ref. 10) are satisfied.

Performing the Surveillance within 15 minutes before starting the idle recirculation pump provides adequate assurance that the limits will not be exceeded between the time of the Surveillance and the time of the idle pump start.

An acceptable means of demonstrating compliance with the temperature differential requirement in SR 3.4.10.4 is to compare the temperatures of the operating recirculation loop and the idle loop. If both loops are idle, compare the temperature difference between the reactor coolant within the idle loop to be started and coolant in the reactor vessel.

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-55 Revision 2

PPL Rev. 2

-- . RCS P/T Limits B 3.4.10 BASES SURVEILLANCE REQUIREMENTS SR 3.4.10.3 and SR 3.4.10.4 (continued)

SR 3.4.10.3 has been modified by a Note that requires the Surveillance to be performed only in MODES 1, 2, 3, and 4. In MODE 5, the overall stress on limiting components is lower. Therefore, AT limits are not required. The Note also states the SR is only required to be met during a recirculation pump start-up, because this is when the stresses occur.

SR 3.4.10.5 and SR 3.4.10.6 Differential temperatures within the applicable limits ensure that thermal stresses resulting from increases in THERMAL POWER or recirculation loop flow during single recirculation loop operation will not exceed design allowances. Performing the Surveillance within 15 minutes before beginning such an increase in power or flow rate provides adequate assurance that the limits will not be exceeded between the time of the Surveillance and the time of the change in operation.

An acceptable means of demonstrating compliance with the temperature differential requirement in SR 3.4.10.6 is to compare the temperatures of the operating recirculation loop and the idle loop.

Plant specific startup test data has determined that the bottom head is not subject to temperature stratification at power levels > 30% of RTP and with single loop flow rate _>21,320 gpm (50% of rated loop flow).

Therefore, SR 3.4.10.5 and SR 3.4.10.6 have been modified by a Note that requires the Surveillance to be met only under these conditions. The Note for SR 3.4.10.6 further limits the requirement for this Surveillance to exclude comparison of the idle loop temperature if the idle loop is isolated from the RPV since the water in the loop cannot be introduced into the remainder of the Reactor Coolant System.

SR 3.4.10.7. SR 3.4.10.8. and SR 3.4.10.9 Limits on the reactor vessel flange and head flange temperatures are generally bounded by the other P/T limits during system heatup and cooldown. However, operations approaching MODE 4 from MODE 5 and in MODE 4 with RCS temperature less than or equal to certain specified values require assurance that these temperatures meet the LCO limits.

(continued)

SUSQUEHANNA - UNIT 1 TS / B 3.4-56 Revision I

PPL Rev. 2

-- . RCS P/T Limits B 3.4.10 BASES SURVEILLANCE REQUIREMENTS SR 3.4.10.7. SR 3.4.10.8. and SR 3.4.10.9 (continued)

The flange temperatures must be verified to be above the limits 30 minutes before and while tensioning the vessel head bolting studs to ensure that once the head is tensioned the limits are satisfied. When in MODE 4 with RCS temperature < 80 0 F, 30 minute checks of the flange temperatures are required because of the reduced margin to the limits.

When in MODE 4 with RCS temperature 1100°F, monitoring of the flange temperature is required every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> to ensure the temperature is within the specified limits.

The 30 minute Frequency reflects the urgency of maintaining the temperatures within limits, and also limits the time that the temperature limits could be exceeded. The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency is reasonable based on the rate of temperature change possible at these temperatures.

REFERENCES 1. 10 CFR 50, Appendix G.

2. ASME, Boiler and Pressure Vessel Code, Section Xl, Appendix G.
3. ASTM E 185-73.
4. 10 CFR 50, Appendix H.
5. Regulatory Guide 1.99, Revision 2, May 1988.
6. ASME, Boiler and Pressure Vessel Code,Section XI, Appendix E.
7. NEDO-21778-A, December 1978.
8. Final Policy Statement on Technical Specifications Improvements, July 22, 1993 (58 FR 39132).
9. PPL Calculation EC-062-0573, "Study to Support the Bases Section of Technical Specification 3.4.10."
10. FSAR, Section 15.4.4.
11. Regulatory Guide 1.190, March 2001.
12. FSAR, Section 4.1.4.5.

SUSQUEHANNA-UNIT 1 TS / B. 3.4-57 'Revision 3

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