st. lucie unitst. lucie unit 1 and unit 2 docket nos. 50-335 and 50-389 proposed license amendments...

St. Lucie Unit 1 and Unit 2Docket Nos. 50-335 and 50-389Proposed License AmendmentsEmergency Diesel Generators; Change toTestin Re uirements er GL 93-05 and 94-01

ATTACHMENT 3

ST, LUCIE UNIT '1 MARKED-UP TECHNICAL SPECIFICATION PAGES

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INSERT-A/INSERT-B

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9504100080 950403PDR ADOCK 05000335

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3 4.8 CTR CA R SYSTEHS

4. . A.C...S URC

OP RAT NG

LIMITING CONDITION FOR OPERATION0 8 R R S 0 R CR 0 0 S S AA S R 'S R R R R S S S S R R S 'S S R 0 R S S R 0 R 0 0 S % 'R 'R W 4 'S S Q + 'IA+~ g ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ g ~ ~ g g ~ g + + +

3.8. 1. 1 As a mintmum, the following A.C. electrical power sources shall beOPERABLE:

a. Two physically independent circuits between the offsite transmissionnetwork and the onsite Class 1E distribution system, and

b. Two separate and independent diesel generator sets each with:

1. Engine-mounted fuel tanks containing a minimum of 152gallons of fuel,

2. A separate fuel storage system containing a minimum of16,450 gallons of fuel, and

3. A separate fuel transfer pump.

O~PP 44 ll: 44444-4, 4,.4 4 4.

~ACT N:

a ~ With one offsite circuit of 3.8. 1.1.a inoperable, except as providedin Action f. below, demonstrate the OPERABILITY of the remainingA.C. sources by performing Surveillance Requirement 4.8. 1. 1. l.a within1 hour and at least once er 8 hours thereafter. +

ee u e-s-s -u e e e-past-24-ho ur~emom~;-e~As-OPHtAfBLH'-Y-by-pe&cnhng-Sur ve+Ranee-R m

c Restore the offsitecircu t to OPERABLE sta us w thin 72 hours or be in at least HOTSTANDBY within the next 6 hours and COLD SHUTDOWN within the following30 hours.

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b. With one diesel generator of 3.8.1.1.b inoperable, demonstrate thean inoperable support OPERABILITY of the A. C. sources by performing Sur veil 1 ance Requirementsystem an3~ep nden«y 4.8.1.1.1.a within 1 hour and at least once per 8 hours thereafter; andif the FDG became ino erable due to an cause other than preplanned

nse.r preventat ve ma ntenance or test ng, emons rate e P RABILITY ofthe remaining OPERABLE DG by performing Surveillance Requirement.4.8. 1.1.2.a.4 withi ou ; restore the diesel generator toOPERABLE status w t in 72 hours or be in at least HOT STANDBY withinthe next 6 hours and in COLD SHUTDOWN within the following 30 hours.

shaB Additionally, verify within 2 hours or be in HOT STANDBY within ther next 6 hours and in COLD SHUTDOWN within the following 30 hours that:

Ec~+/his test 'e completed regardless of when the inoperable EDG isrestored to OPERABIL TY.

If the absence of any camen-cause failure cannot be confirmed,

~8 hoursA unless it can be confirmed that the cause of the inoperable EDG does not exist on the remaining „

ST. LUG IE - UNIT 1 3/4 8-1 Amendment No. 483-,

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~E CTR CA POWER SY , HS

ACT N C ntinued

all required systems, subsystems, trains, components and

devices that depend on the remaining OPERABLE dieselgenerator as a source of emergency power are also OPERABLE,

and

2. When in MODE 1, 2 or 3, the steam-driven auxiliary feed pumpis OPERABLE.

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an inoperabte supportsystem, an independentlyestabie component, or

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With one offsite A.C. circuit and one diesel generator inoperable,demonstrate the OPERABILITY of the remaining A.C. sources byperforming Surveillance Requirement 4.8. 1. 1.1.a within one hourand at least once per 8 hours thereafter; and if the EDG becameino erable due to an cause other than preplanned preventativemaintenance or test>ng, emonstrate the OPERABILITY of the remainingOPERABLE EDG by performing Surveillance Requirement 4.8.1.1.2.a.4within 8 hour Restore at least one of the inoperable sourcesto OPERABLE s a us within 12 hours or be in at least HOT STANDBY

within the next 6 hours and in COLD SHUTDOMN within the following30 hours. Restore the other A.C. power source (offsite circuit ordiesel generator) to OPERABLE status in accordance with the provisionsof Section 3.8.1.1 ACTION Statement a or b, as appropriate, withthe time requirement of that ACTION Statement based on the time ofthe initial loss of the remaining inoperable A.C. power sc arce.Additionally, verify within 2 hours or be in HOT STANDBY within thenext 6 hours and COLD SHUTDOWN within the following 30 hours that:

1. all required systems, subsystems, trains, components anddevices that depend on the remaining OPERABLE dieselgenerator as a source of emergency power are also OPERABLE,and

2. When in MODE 1, 2 or 3, the steam-driven auxiliary feed pumpis OPERABLE.

d. Mith two of he re uired offsite A.C. circuits ino erable Aemonsh~Ae

gg~f s en ma'am y-sequent ~mAng~e+II+ance-RequHement-4-.8-.1-.1-.2-.a-.4-on-both-dies Pie-8-h u s

e restore one ofthe inoperable offsite sources to OPERABLE status within 24 hours orbe in at least 80T STANDBY within the next 6 hours. Following restor-ation of one offsite source, follow ACTION Statement a. with the timerequirement of 'that ACTION Statement based on the time of the initial

„ loss of the remaining inoperable offsite A.C. circuit.* his test be completed regardless of when the inoperable EDG isrestored to OPERABILITY.

If the absence of any comaon-cause failure cannot be confirmed,

unless it can be confirmed that the cause of the inoperable EOG does not exist on the remaining EOG»,

ST. LUC IE - UNIT 1 3/4 8-2 Amendment No. 88-,

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.L CTR CAL POM R SYS

ACTION Continued

e. With two of the above required diesel generators inoperable,demonstrate the OPERABILITY of two offsite A.C. circuits byperforming Surveillance Requirement 4.8.1. l. l.a within 1 hourand at least once per 8 hours thereafter; restore one of theinoperable diesel generators to OPERABLE status within 2 hoursor be in at least HOT STANDBY within the next 6 hours and inCOLO SHUTDOWN within the following 30 hours. Followingrestoration of one diesel generator unit, follow ACTIONStatement b. with the time requirement of that ACTIONStatement based on the time of initial loss of the remaininginoperable diesel generator.

With one Unit 1 startup transformer (lA or 1B) inoperable andwith a Unit 2 startup transformer (2A or 2B) connected to thesame A or B offsite power circuit and administrativelyavailable to both units, then should Unit 2 require the use ofthe startup transformer administratively available to bothunits, Unit 1 shall demonstrate the OPERABILITY of theremaining A.C. sources by performing Surveillance Requirement4.8. 1.1. l.a within 1 hour and at least once er 8 hoursthereafter. ee~~ PENNttlW-byy~~g-SurveW&nee-Requhreme

Restore t e nopera lestartup transformer to OPERABLE status within 72 hours or bein at least HOT STANDBY within the next 6 hours and COLDSHUTDOWN within the following 30 hours.

SURVEILLANCE REQUIREMENTSS S 0 0 S S S S S 0 S S S S S 0 0 R S 0 Q R S S 0 S 0 0 S 0 R 0 '8 0 S 0 Q S 0 8 S % 0 0 '0 '0 0 S S S S S S 0 S S 8 S S S S S 0 8 S S '8 S 'S S 8 S S S 8 S S S 8

4.8. 1. 1. 1 Each of the above required independent circuits between the offsitetransmission network and the onsite Class lE distribution system shall be:

Determined OPERABLE at least once per 7 days by verifying.,correctbreaker alignments, indicated power availability; and

b. Demonstrated OPERABLE at least once per 18 months by transferring(manually and automatically) unit power supply from the auxiliarytransformer. to the startup transformer.

4.8.1.1.2

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Each diesel generator shall be demonstrated OPERABLE:'

uenc ecSTAGGERED TEST BASIS by.

l. Verifying fuel level in the engine-mounted fuel tank,

on a

2. Verifying the fuel level in the fuel storage tank,

3. Verifying the fuel transfer pump can be started and transfersfuel from the storage system to the engine-mounted tank,

ST. LUCIE - UNIT 1 3/4 8-3 Amendment No. 403-, p+

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SURV ANC R U R MENTS Continue

4. Verifying the diesel starts from ambient cond:ition andaccelerates to approximately 900 rpm in less than or equalto 10 seconds**. The generator voltage and frequency shallbe 4160 + 420 volts and 60 2 1.2 Hz within 10 seconds afterthe start signal**. The diesel generator shall be startedfor this test by using one of the following signals:

a) Manual/Local

b) 'Simulated loss-of-offsite power by itself.

c) Simulated loss-of-offsite power in conjunctionwith an ESF actuation test signal.

~cordance ~'kh~ waeuf-a Wurer sre.c:oeme+da4io~s

d) An ESF actuation test signal by itself.'

Verifying the generator is s nchronized, loaded to greaterthan or e ual to 3500 kW iand operates w>t in a oad an of 3300 to 0 kW*** for atleast an additional 60 minutes, and

6. Verifying the diesel generator is aligned to provide standbypower to the associated emergency busses.

b. By removing accumulated water:

1. From the engine-mounted fuel tank at least once per 31 daysand after each occasion when the diesel is operated forgreater than 1 hour, and

2. From the storage tank at least once per 92 days.d

**The diesel generator start (10 sec.) from ambient conditions shall beperformed at least once per 184 days in these surveillance tests. Allother diesel generator starts for the purposes of this surveillancetesting may be preceded by an engine prelube period and may also includewarmup procedures (e.g., gradual acceleration) as recommended by themanufacturer so that mechanical stress and wear on the diesel generator isminimized.

d

** en dion *an-o~quA-to-60-s con s-sh e-performedat~es4-once-every-N4-days~)min~or th~a&ag-test-shaH-siand-tt-t td-tl-dt t-de& t~tMddddMpuvpos~~Ms urvei-l-lance-te

a The indicated load band is meant asguidance to avo>d routine overloading. Variations in loads in excess ofthe band due to changing bus loads shall not invalidate this test.

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ELECTRICAL POWER SYSTEMS

SURVEILLANCE RE UIREMENTS Continued

g. At least once per ten years by:

1. Draining each fuel storage tank, removing the accumulatedsediment and cleaning the tank using an appropriatecleaning compound, and

2. Performing a pressure test of those portions of the dieselfuel oil system designed to USAS 831.7 Class 3 requirementsat a test pressure equal to llOL of the system designpressure.

4.8.1.I.3 ~ll

ommission pursuant to Specification 6.9.2. o oiesel gene lures shall include the informati ended ingulatory Position C. . latory G

', Revision 1, August 1977.If the number of failures in t 'd tests (on a per nuclear

nit basis) is gre r n or equal to 7, the re l be supplementedo inc a ditional information recommended in Regulator '.3.

eg~~u4de-1~)~ev+Aon-4~ug4.8. 1.1.4 The Class 1E underground cable system shall be demonstratedOPERAHLE within 30 days after the movement of any loads in excess of80'1. of the ground surface design basis load over the cable ducts bypulling a mandrel with a diameter of at least 8N of the duct's insidediameter through a duct exposed to the maximum loading (duct nearestthe ground's surface) and verifying that the duct has not been damaged.

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TABLE 4.8-1

~ OIESEL GENERATOR TEST SCHEOULE

idol used)umb ~f-Fa+la res —in~ 4

Last 20 Valid Tests" Last 100 Valid Tests" Test Fre uenc

< 5

) 5

At least once pe 1 days

At least o e per 7 days

" Criteria for detgrmining number of failures and number f valid tests shallbe in accorda Ce with Regulatorygt'osition C.2.e of Regula ry Guide 1.108,Revision 1 ugust 1977, where )he number of tests and failu s is determinedon a pe diesel generator basis'.

r""T s test frequency shall be maintained until seven consecutive failu freedemands have been performed and the number of failures in the last 20 va 'ddemands have been reduced to one or less. Initial entry into this testsahed~hal~em~h~idayMes~fluency

ST. LUCIE - UNIT 1 3/4 8-60 Amendment No.

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SHUTOOWN

LIMITING CONOITION FOR OPERATION

3.8.1.2 As a minimum, the following A.C. electrical power sources shall beOPERABLE:

a. One circuit between the offsite transmission network and theonsite Class 1E distribution system, and

b. One diesel generator set with:

1. Engine-mounted fuel tanks containing a minimum of152 gallons of fuel,

2. A fuel storage system containing a minimum of 16,450gallons of fuel, and

3. A fuel transfer pump.

APPLICABILITY: MOOES 5 and 6.

ACT|ON:

With less than the above minimum required A.C. electrical power sources OPERABLE,immediately suspend all operations involving CORE ALTERATIONS, positive reactivitychanges, movement of irradiated fuel, or crane operation with loads over the fuelstorage pool. In addition, when in MOOE 5 with the reactor co'olant loops notfilled, or in MOOE 6 with the water level less than 23 feet above the top ofirradiated fuel assemblies seated within the reactor pressure vessel, immediatelyinitiate corrective action to restore the required sources to OPERABLE statusas soon as possible.

SURVEILLANCE RE UIREMENTS

4.8.1.2.1 The above required A.C. electrical power sources shall bedemonstrated, OPERABLE by the performance of each of the SurveillanceRequirements of 4.8.1.1. 1 and 4.8.1. 1.2 except for requirement4.8.1.1.2a.5.

be repo t e Comaission pursuant to Specification 6.9.2. po ofdiesel generator a shall include the informant >n-re aeended inRegulatory Position C.3.b of r G '8, Revision 1, August 1977.If the number of fai lures in tests (on a per nuclear unitbasis) is greater equal to 7 the report s a u lemented toinclud stional informatio recommended in Regulatory o '3.b

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3/4.8 ELECTRICAL POWER SYSTEMS

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The OPERABILITY of the A. C. and O.C. power sources and associateddistribution systems during operation ensures that sufficient power will beavailable to supply the safety related equipment required for 1) the safeshutdown of the facility and 2) the mi tigation and control of accidentconditions within the facility. The minimum specified independent andredundant A.C. and D.C. power sources and distribution systems satisfy therequirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of thepower sources provide restriction upon continued facility operation commensuratewith the level of degradation. The OPERABILITY of the power sources are consis-tent with the initial condition assumptions of the accident analyses and arebased upon maintaining at least one of each of the onsite A.C. and D.C. powersources and associated distribution systems OPERABLE during accident conditionscoincident with an assumed loss of offsite po~er and single failure of the otheronsite A.C. source. When one diesel generator is inoperable, there is anadditional ACTION requirement to verify that all required systems, subsystems,trains, components and devices that depend on the remaining OPERABLE dieselgenerator as a source of emergency power, are also OPERABLE, and that thesteam-driven auxiliary feedwater pump is OPERABLE. This requirement is intendedto provide assurance that a loss of offsite power event will not result in acomplete loss of safety function of critical systems during the period one ofthe diesel generators is inoperable. The term verify as used in this contextmeans to administratively check by examining logs or other information todetermine if certain components are out-of-service for maintenance or otherreasons. It does not mean to perform the surveillance requirements needed todemonstrate the OPERABILITY of the component.

Ambient conditions are the normal standby conditions for the diesel engines.Any normally running warmup systems should be in service and operating, andmanufacturer's recommendations for engine oil and water temperatures and otherparameters should be followed.

~ I

The OPERABILITY of the minimum specified A.C. and D.C. power sources andassociated distribution systems during shutdown and refueling ensures that I)the facility can be maintained in the shutdown or refueling condition for extendedtime periods and 2) sufficient instrumentation and control capability isavailable for monitoring and maintaining the facility status.

~f

The Surveillance Requirements for demonstrating the OPERABILITY of the dieselgenerators are in accordance with the recommendations of Regulatory Guide 1.108,"Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systemsat Nuclear Power Plants," Revision 1, August 1977, Regulatory Guide 1. 137, "FuelOil Systems for Standby Diesel Generators," Revision 1, October 1979, GenericLetter 84-15, "Proposed Staff Actions to Improve and Maintain Diesel GeneratorReliability," dated July 2, 1984, and NRC staff positions reflected in AmendmentNo. 48 to Facility Operating License NPF-7 for North Anna Unit 2, dated April 25,19&5

tab XseV-sST. LUCIE - UNIT 1 B 3/4 8-1 Amendment No.

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All EDG inoperabilities must be investigated for common-causefailures regardless of .how long the EDG inoperability persists.When one diesel generator is inoperable, required ACTIONS 3.8.1.1.band 3.8.1.1.c provide an allowance to avoid unnecessary testing ofEDGs. If it can be determined that the cause of the inoperable EDGdoes not exist on the remaining OPERABLE EDG, then SR 4.8.1.1.2.a.4does not have to be performed. Eight (8) hours is reasonable toconfirm that the OPERABLE EDG is not affected by the same problemas the inoperable EDG. If it cannot otherwise be determined thatthe cause of the initial inoperable EDG does not exist on theremaining EDG, then satisfactory performance of SR 4.8.1.1.2.a.4suffices to provide assurance of continued OPERABILITY of that EDG.If the cause of the initial inoperability exists on the remainingOPERABLE EDG, that EDG would also be declared inoperable upondiscovery, and ACTION 3.8.1.1.e would be entered. Once the failureis repaired (on either EDG), the common-cause failure no longerexists.

INSERT - B

as modified by Generic Letter 93-05, "Line-Item TechnicalSpecifications Improvements to Reduce Surveillance Requirements forTesting During Power Operation," dated September 27, 1993, andGeneric Letter 94-01, "Removal of Accelerated Testing and SpecialReporting Requirements for Emergency Diesel Generators," dated May31, 1994.

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ATTACHMENT 4

ST ~ LUCIE UNIT 2 MARKED-UP TECHNICAL SPECIFICATION PAGES

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INSERT-A/INSERT-B

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3/4.8.1 A.C. SOURCES

OP ERAT ING

LIMITING CONDITION FOR OPERATION

3.8.1.1 As a miriimum, the following A.C. electrical power sources shall beOPERABLE:

a. Two physically independent circuits between the offsite transmissionnetwork and the cnsite Class 1E distribution system, and

b. Two separate and independent diesel generators, each with:

1. Two separate engine-mounted fuel tanks containing a miriimumvolume'of 200 gallons of fuel each,

2. A separate fuel storage system coritaining a minimum volume of40,000 gallons of fuel, and

3. A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

a

„an inoperable support

i system, an independentlytestable component, or

cb

shall

With one offsite circuit of 3.8.1.1.a inoperable, except asprovided in Action f. below, demonstrate the OPERABILITY of thereriiaining A.C. sources by performing Surveillance Requirement4 8.1.l.l.a within 1 hour and at least once per 8 hours thereafter.

04-h ~ ~MNN4RMby-p A I y-5 RatReq ~ ~ e c

Restore the offsite circuit to OPERABLE status within72 hours or be in at least HOT STANDBY within the next 6 hoursand COLD SHUTDOWN within the following 30 hours.

With one diesel generator of 3.8.1.1.b inoperable, demonstratethc OPERA'BILITY of thc A.C. sources by performing SurveillanceRequirement 4.8.1.1.1.a within 1 hour and at least once per8 hours thereafter; arid if the EDG became inoperable due to anycause other than preplanned preventative maintenance or testing,demonstrate the PERABILITY of the remaining OPERABLE EDG b

performing Surveillance Requirement 4.8.1'.1.2a.4 within orestore the diesel generator to OPERABLE status within

nSer

his test be completed regard iess of when the inoperablcEDG is restored to OPERABILITY.

rf the "absence of any cannon-cause failure cannot be confirmed.

"ST. LUCIE - UNIT 2 3/4 8-1 Amendin;.;It NO. 25,

a hours, unless it can be confirmed that the cause of the inoperable EDG does not exist on the remaininsEDG»

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l. All required systems, subsystems, trains, componentsand devices that depend on the remaining OPERABLEdiesel generator as a source of emergency power arealso OPERABLE, and

2. When in NODE 1, 2 or 3, the steam-driven auxiliary feedpump is OPERABLE.

With one offsite A.C. circuit and one diesel generator inoperable,demonstrate 'the OPERABILITY of the remaining A.C. sources byperforming Surveillance Requirement 4:8.l.l.l.a within one hourand at least once per 8 hours thereafter; and if the EDG becameino erable due to an cause other tha preplanned preventativemaintenance or testing, emonstrate the OPERABILITY of the .

remaining OPERABLE EDG by performing Surveillance Requirement4.8.1.1.2a.4 within 8 hour Restore at least one of theinoperab e sources to OPERABLE status within 12. hours or bein at least HOT STANDBY within. the next 6 hours arid in COLD

SHUTDOWN within the following 30 hour s . Restore the otherA.C. power source (offsite circuit or diesel generator) toOPERABLE status in accordance with the provisions of,Section 3.8;1.1. ACTION Statement a or b, as appropriate,with the time requirement of that ACTION Statement basedon the time of initial loss of the remaining inoperable A.C.power source Additionally, verify within 2 hours or be inHOT STANDBY within the next 6 hours and in COLD -SHUTDOWN .

within the following 30 hours that:l'

1. All required systems, subsystems, trains, componentsand devices that depend on the remaining OPERABLEdiesel generator as a source of emergency power arealso OPERABLE, and

C.an inoperable supportsystem, an independentlytestable component, or

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2. When in NODE 1, 2, or 3, the steam<riven auxiliary feedpump is OPERABLE.

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>unless it can be confirmed that the cause of the inoperable EOG does not exist on the remaining EDG".

g,chis test be completed regardless of when the inoperable

EDG is restored to OPERAB sk 1

msert 'f the absence of any cawen-cause failure cannot be confirmed,

u ii tFLECTRICAL POWER SYS1

ACTION (Continued)

72 hours or be in at least HOT STANDBY within the rext 6 hoursand in COLD SHUTDOWN within the following 30 hours. Additionally,verify within 2 hours or be in HOT STANDBY within the next6 hours and in COLD SHUTDOWN wi;thin the following 30 hours that:

ST. LUCIE - UNIT 2 3/4 8-2 Amendment No. g$ ,

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SURVEILLANCE REgUIREHENTS (Continued)SIC'RSRSRROQSSCCX RC CRR XRQRRQ X QXZtRRg+R ~~~gg~gg~~~~~gg~~~+++++++

1. Verifying the fuel level in the engine-mounted. fuel tank

2. Verifying the fuel level in the fuel storage tank,

3. Verifying the fuel transfer pump can be started andtransfers fuel from the storage system to theengine-mounted tank, oM

4. Verifying the diesel starts ambient condition andaccelerates to approximately 900 rpm in less than or equalto 10 seconds**. The generator yoltage and frequency shall be4160 i 420 volts and 60 i 1.2 Hz within 10 seconds after thestart signal**. The diesel generator shall be startedfor this test by using one of the following signals:

a) Hanual/Local.

b) Simulated loss-of-offsite power by itself.c) Simulated loss-of-offsite power in conjunction with an ESF

actuation test signal.

d) An ESF actuation test signal by itself.~rh~ecK N~~

sure

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5. Verifying the generator is s chronized, loaded ** to reaterthan or e ual to 3685 kQ inand operates with n a oa and of 3450 to 3685 k least s

an additional 60 minutes, and Jg6. Verifying the diesel generator is aligned to provide

standby power to the associated emergency busses.

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b. By removing accumulated water:

1. From the engine-mounted fuel tank at least once per '31 daysand after each occasion when the diesel is operated forgreater than 1 hour, and

2. From the storage tank at least once per 31 days.

** The diesel generator start (10 sec) from ambient conditions shall be per-formed at least once per 184 days in these surveillance tests. All otherdiesel generator starts for purposes of this surveillance testing may be"preceded by an engine prelube period and may also include warmup procedures(e.g., gradual acceleration) as recommended by the manufacturer so thatmechanical stress and wear on the diesel generator is minimized.~dl 4a ~quito-60-seconds-shaR-be-peWerm~gA~~ d4 It@~ 1 Wmm p ~

. ~4ng-o$ -4he-d-&s~enera4or-breaker %~hen~e. e an GOASi8A-

e in icate load band s meant as gui ance to avoid routineoverloading. Variations in loads in excess of the band due to changing busloads shall not invalidate this test.

ST. LUCIE - UNIT 2 3/4 8-4 Amendment No. 89-,

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ACT(Op (Continued)

d.

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Witn two of tht: raquirea uffsite A.C. circuits i«(parable,-f-em+ng

restore ont: ofthe»superable cffsite scur ces to OPERABLE status wiini«24 hours orbe in ~t least HOT STANDBY within the «t=xt 6 hours. Following rebtot-ation of un'fTsit~ scurce, folluw ACTION Statement a. with the tin(eraquir'em~nt of that ACTION Statement based on tht: time oT initial lossof the remainirsg inopt:rable offsite A.C. circuit.

With two of the abvv~ requireo oiese1 generators inoperable, at:n(onstratethe CPERABILITY of two offs>rc A.C. circuit- by periorming SurveillanceReouiremt:«t 4.8.1.1.1.a withi'n 1 hour ana at least once per 8 hourstnerec(TTer; restore one of tne inoPerab l~ diesel gs.cierators to OPERABLEstatus withs» 2 hours or b~ i« at least HOT STANDBY with1« the next6 hours and in COLD SHUTDOWN within the following 30 hours. FollowingrestoraT.ion of one diesel.,genercLtor unit, follow ACTION Statement b.with the time r~quirement.of that ACTION Statt:m~nt based on the timeof initial loss of the remaining inoperabl~ diesel generator.

f. Wstn one Unit 2 startup transformer (2A or 2B) i«operablt: and.with aUnT t 1 star tup transformer (1A or 1B) connected to the same A or 8cffsite power circuit and administratively available to botn units,then should L«st 1 require the use of the startup transformeracministratively avai labl~ to both units, Unit 2 shall derionstl dtethe operability of the remaining A.C. sources by performing Surveii lane(=Requirement 4.8.l.l.la. within 1 hour and at least once per 8 hoursthereafter. ' G-h e n-succ

&w~-1-lan�ce-Re

'e a<Restore the inoperable startup transformer to

OPERABLE status within 72 hours or be in at least HOT STANDB)within the next 6 hours and COLD SHUTDOWN within the following30 hours.


Demonstrated OPERABLE at least once per 18 months by transferring(manually and automatically) unit power supply from the normalcircuit to the alternate circuit.

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b.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE ~

<.8.1.1.1 Each of the above required independent circuits between the offsite "transmission network and the onsite Class lE distribution system shall be:

r

a. Determined OPERABLE at least once per 7 days by ver ifying correctbreaker alignments, indicated power availability; and

a.STAGGERED TEST BASIS BY:

on a

ST. LUCIE - UNIT 2 3/4 8-3 Amendment No. gals

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E ECTRICAL POWER SYSTEHS

SURVEILLANCE RE UIREHENTS Continued

c) Verifying that all automatic diesel generator trips,except engine overspeed and generator differential,are automatically bypassed upon loss of voltage onthe emergency bus concurrent with a safety injectionactuation signal.

7. Verifying the diesel generator'operates for at least 24 hours.****During the first 2 hours of this test, the diesel generatorshall be loaded within a load band of 3800 to 3985 kW'ndduring the remaining 22 hours of this test, the dieselgenerator shall be loaded within a load band of 3450 to3685 kW'. The generator voltage and frequency shall be4160 + 420 volts and 60 + 1.2 Hz within 10 seconds afterthe start signal; the steady-state generator voltage andfrequency shall be mai tained within these limit urinthis test. 'ves-af m out

—,pN~rm-Sur vH&~nce-Requmeme

8. Verifying that the auto-connected loads to each dieselgenerator do not exceed the 2000-hour rating of 3935 kW.

9. Verifying that the diesel generator's capability to:

a) Synchronize with the offsite power source while thegenerator is loaded with its emergency loads upon asimulated restoration of offsite power.

b) Transfer its loads to the offsite power source, and

c) Be restored to its standby status.

.10. Verifying-,that with the:diesej;generator operating",in-.artest'.mode (connected to its bus), a simulated safety injectionsignal overrides the test mode by (1) returning the dieselgenerator to standby operation and (2) automatically energizesthe emergency loads with offsite power.

11. Verifying that the fuel transfer pump transfers fuel from eachfuel storage tank to the engine-mounted tanks of each dieselvia the installed cross connection lines.

O'This band is meant as guidance to avoid routine overloading of the engine.Variations in load in excess of this band due to changing bus loads shallnot invalidate this test.

****Thistest may be conducted in accordance with the manufacturer'srecommendations concerning engine prelube period.

ST. LUCIE - UNIT 2 3/4 8-7 Amendment Nn. its Pd

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ELECTR ICAL POWER S YSl MS

SURVEILLANCE RE UIREMENTS Continued

12.. Verifying that the automatic load sequence timers areoperable with the interval between each load block within+ l.second of its design interval.

f. At least once per 10 years or after any modifications whichcould affect diesel generator interdependence by starting****the diesel generators simultaneously, during shutdown, andverifying that the diesel generators accelerate to approximately'00 rpm in less than or equal to 10 seconds.

At least once per 10 years by:

1. Draining each fuel oil storage tank, removing theaccumulated sediment and cleaning the tank using asodium hypochlorite solution, and-

2. Performing a pressure test of those portions of thediesel fuel oil system designed to Section III,subsection NO of the ASNE Code at a test pressureequal to 1105 of the system design pressure. I4 .

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4.8.1.1.4 The Class lE underground cable system shall be demonstratedOPERABLE within 30 days after the movement of any loads in excess of 80% ofthe ground surface design basis load over the cable ducts by pulling a mandrelwith a diameter of at least 80K of the duct's inside diameter through .a ductexposed to the maximum loading (duct nearest the ground's surface) andverifying that the duct has not been damaged.

f This band is meant as guidance to avoid routine overloading of the engine.Variations in load in excess of this band due to changing bus loads shall notinvalidate this test.

****This test may be conducted in accordance with the manufacturer'srecommendations concerning engine prelube period.

13. Performing surveillance Requirement 4.8.1.1.2a.4 within 5 minutesof shutting down the diesel generator after it has operated withina load band of 3450 kw to 3685 kw'or at least 2 hours or untiloperating temperatures have stabilized.

ST. LUCIE - UNIT 2 3/4 8-7a Amendment No.

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TABLE 4.8-1

DIESEL GENERATOR TEST SCHEDULE

ygCV (t4>+ used)

Last 20 Valid Tests* Last 100 Valid Tests*

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At least once pe 31 day

At least on per 7 days

*Criteria f determining nu er of failures and number of va d tests shallbe in ac rdance with Regu atory Position C.2.e of Regulatory de 1.108,Revis n 1, August. 1977, ere the number of tests and failures ide mined on a per dies l generator basis.

ormed and the number of failures in the last 20 valided-4o-one-or —1

demands have been pcrcmands-has-been-r-edu

This test frequency sh ll bc maintained until seven consecutive failure e


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- ELECTRICAL POWER SY S~ q ~

A.C. SOURCES

SHUTOOMH

LIMITING CONDITION FOR OPERATION

3.8.1.2 As a minimum, the following A.C.'electrical power sources shall be

OPERABLE:

a. One circuit between the offsite transmission network and the onsiteClass 1E distribution system, and

b. One diesel generator with:

1. Two engine-mounted fuel tanks each containing a minimum volumeof 200 gallons of fuel,

2. A fuel storage system containing a minimum volume of 40,000gallons of fuel, and

3. A fuel transfer pump.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE,

immediately suspend all operations involving CORE ALTERATIONS, positive reactivitychanges, movement of irradiated fuel, or crane operation with loads over the fuelstorage pool, and within 8 hours, depressurize and vent the Reactor Coolant System

through a greater than or equal to 3.58 square inch vent. In addition, when inMODE 5 with the reactor coolant loops not filled, or in MODE 6 with the water levelless than 23 feet above the reactor vessel flange, immediately initiate correctiveaction to restore the required sources to OPERABLE status as soon as possible.


4.8.1.2.1 The above required A.C. electrical power sources shall be demonstratedOPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1and 4.8.1.1.2 (except for requirement 4.8.1.1.2a.5).

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epor e Commission pursuant to Specification 6.9.1. Repor diesel'neratorfailure include the information reco de n Regulatory

uide 1.108, Revision 1, Aug 7. If t u er of failures in the last00 valid tests (on a per nucle 's greater than or equal to 7,he report shall be p n ed to ~i lude the a 't' informationecommend 'gulatory Posi tio W.3.b of Regulatory Guide . evision 1,

ST. LUG IE - UNIT 2 3/4 8-9 Amendment No.

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3/4.8. 1 3/4.8.2 and 3/4.8.3 A.CD SOURCES O.C SOURCES and ONSITE POWERDISTRIBUTION SYSTEMS

The OPERABILITY of the A.C. and O.C. power sources and associateddistribution systems during operation ensures that sufficient power will beavailable to supply the safety related equipment required for 1) the safeshutdown of the facility and 2) the mitigation and control of accident condi-tions within the facility. The minimum specified independent and redundantA. C. and O.C. power sources and distribution systems satisfy the requirementsof General Design Criterion 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of thepower sources provide restriction upon continued facility operation commen-surate with the level of degradation. The OPERABILITY of the power sourcesare consistent with the initial condition assumptions of the safety analysesand are based upon maintaining at least one redundant set of onsite A.C. andO.C. power sources and associated distribution systems OPERABLE during accidentconditions coincident with an assumed loss of offsite power and single failureof 'the other onsite A. C. source. Th'e A. C. and O.C. source allowable out-of-service times are based on Regulatory Guide 1.93, "Availability of ElectricalPower Sources," December 1974. When one diesel generator is inoperable, thereis an additional ACTION requirement to verify that all required systems,subsystems, trains, components and devices, that depend'on the remainingOPERABLE diesel generator as a source of emergency power, are also OPERABLE,and that the steam-driven auxiliary feedwater pump is OPERABLE. This require-ment is intended to provide assurance that a loss of offsite power event willnot result in a complete loss of safety function of critical systems duringthe period one of the diesel generators is inoperable. The term verify asused in this context means to administratively check by examining logs orother information to determine if certain components are out-of-service formaintenance or other reasons. It does not mean to perform the surveillancerequirements needed to demonstrate the OPERABILITY of the corn onent.

The OPERABILITY of the minimum specified A.C. and O.C. power sources andassociated distribution systems during shutdown and refueling ensures that1) the facility can be maintained in the shutdown or refueling condition forextended time periods and 2) sufficient instrumentation and control capabilityis available for moniforing and maintaining the unit status.

The Surveillance Requirements for demonstrating the OPERABILITY of thediesel generators are in accordance with the recommendations of RegulatoryGuides 1.9 "Selection of Diesel Generator Set Capacity for Standby PowerSupplies," March 10, 1971, and 1. 108 "Periodic Testing of Diesel GeneratorUnits Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1,August 1977, and 1. 137, "Fuel Oil Systems for Standby Diesel Generators,"'evision 1, October '1979, Generic Letter 84-15, 'Proposed Staff Actions toImprove and Maintain Diesel Generator Reliability" dated July 2, 1984, andNRC staff positions reflected in Amendment No. 48 to Facility OperatingLicense No. NPF-7 for North Anna Unit 2, dated April 25, 1985

ST. LUCIE - UNIT 2 8 3/4 8-1 Amendment No.

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INSERT - A

All EDG inoperabilities must be investigated for common-causefailures regardless of how long the EDG inoperability persists.When one diesel generator is inoperable, required ACTIONS 3.8.1.1.band 3.8.1.1.c provide an allowance to avoid unnecessary testing ofEDGs. If it can be determined that the cause of the inoperable EDGdoes not exist on the remaining OPERABLE EDG, then SR 4.8.1.1.2.a.4does not have to be performed. Eight (8) hours is reasonable toconfirm that the OPERABLE EDG is not affected by the same problemas the inoperable EDG. If it cannot otherwise be determined thatthe cause of the initial inoperable EDG does not exist on theremaining EDG, then satisfactory performance of SR 4.8.1.1.2.a.4suffices to provide assurance of continued OPERABILITY of that EDG.If the cause of the initial inoperability exists on the remainingOPERABLE EDG, that EDG would also be declared inoperable upondiscovery,, and ACTION 3.8.1.1.e would be entered. Once the failureis repaired (on either EDG), the common-cause failure no longerexists.

INSERT - B

g as modified by Generic Letter 9 3-05, "Line-Itern Technica lSpecifications Improvements to Reduce Surveillance Requirements forTesting During Power Operation," dated September 27, 1993, andGeneric Letter 94-01, "Removal of Accelerated Testing and SpecialReporting Requirements for Emergency Diesel Generators," dated May31/ 1994 '

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st. lucie unitst. lucie unit 1 and unit 2 docket nos. 50-335 and 50-389 proposed license amendments...

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