ML17216A538

Revised Tech Specs Authorizing Changes to Diesel Generator in Response to Generic Ltr 84-15

ML17216A538
Person / Time
Site:	Saint Lucie
Issue date:	05/07/1986
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17216A537	List: ML17216A536 ML17216A538
References
GL-84-15, NUDOCS 8605140033
Download: ML17216A538 (18)

Text

3/4.8 ELECTRICAL POVER SYSTEHS 3/4.8.1. A.C. SOURCES OPERATING LINITING CONDITION FOR OPERATION 3.8.1.1 As a ~ lnfmre, the folio<<ing A.C. electrical po<<er sources shall be OPERABLE:

a. T<<o physically independent circuits bet<<een the offsfte transmissfon network and the onsite Class 'IE distribution system, and

b. Two separate and Independent diesel generators, each <<ith:

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

2. A separate fuel s mrage system containing a minimum vol~ of 40,000 gallons of fuel, and

3. A separate fuel transfer pump.

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

ACTION:

a. With either offsjth circui ther n the nditio delin d a. Mfth one offsite circuit of 3.8.l.l.a inoperable, demonstrate the fn Aetio .B.lgf. or die gener r of t abov uire A.C. OPERABILITY of the remaining A.C. sources by performing Surveillance elect cal poof'ources nopera e, demoga rateptk OPERABILITY o Requirement 4.8.l.l.l.a ~ithin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> ini A:C. so es by rform+in ~Suw/vei ance Reqdiremen thereafter. If either EOG has not been successfully tested within

.8.1.1.. and 4.8 .1.2a. <<ithin hour at le t once r the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. demonstrate its OPERABILITY by performing Surveil-8 hou thereafter, resto at IeasC two of<site cf uits an two lance Requirement 4.8.1.1.2.a.4 separately for each such EOG within dies generates to OPf. status rftJrfn 72 n rs or be n at LE 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the offsite circuit to OPERABLE status within 1 t HOT STJSDBY <<Itfrfn the npfc 6 no/res and COLO SHU OONI 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be fn at least HOT STANDBY. within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and r thin the hollo<<ing 3 bourse'.

COLO SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

W th o off te ircuit and one diesel generator of th above req 'red . . e ctri al,power ource inoper ble, d nstrat the RAB TY o the fnfng .C. s rces b perfo ng Surv illance b. Iiith one diesel generator of 3.8.).l.b inoperable, demonstrate the equ emen 4.8. . 1. la. 4.8. .2a.4. <<ithin hour a at le t of the A.C. offsite sources by performing Suweillance

't OPERABILITY o per hour therea er; re ore at east o of the noperab Requirement 4.8.l.l.l.a withfn 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> ourc to OP LE s tus <<itrifn 12 urs or e in at east HO thereafter; if ST BY wi in the xt 6 h rs and n COLD UTDOWN ithin t and the EDG became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate f lo<<in 30 hour3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> . Rest 1 st t<<o ffsite rcufts a two the OPERABILITY of the remaining OPERABLE EOG by performing Surgeil-iesel enerat s to OP BLE s tus wit n 72 h rs from t time lance Requirement 4.8.1.1.2.a.4 within 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />sel restore the diesel of I tial 1 s or be n at le st HOT ANDBY <<i hin the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least and n COLD HUTDOWN <<Ithin the folio<<ing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. HOT S'IANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and fn COLO SHUTDONN within the

c. Mft ne d sel enerat r Inoperab e in addition o ACTIO a. o b. following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

a ve,~ v Ify at:

1. 1 ired stemf, su stems train , comp nts d de ces

~

tha depen n tbr/ r 'ning 0 LE iesel enera r as s rce of errancy puffer a also ERABL , and TA'S +prdg;I Q r'dgg/r<mM CCrvr 6C'rICW <<4 orle. On'I

2. en a OPERABLE.

OE 1, 2, r 3, t ste driverf auxiliary fe d pump is Skr4rrp k rsrrsQtmc (Z/1 pr 28) rnopern4lc /pre<<pcs A& ct Onion I sfmky gronrfernrcr (/rq or ]IS) ce nccgrrI A, A(c S~c Jt rN' pgf r'ffd ppvrA/rCA'9 'I adnr a 'I~Pr ~Cly fZdd rid hlC je deI/r csrrdi drrd nol t/Y.qr/ride! W r//c pn 0<>'/. I .

ST. LUCIE - UNIT 2 3/4 8-1 'This test Is required to be completed regardless of when the inoperable EOG Is restored to OPERABILITY.

8605i40033 860507 PDR ADOCK 05000389 P PDR

s(.8.1. I.I.a,

c. Mfth one offsfte circuit and one d1esel generator ELECTRICAL POWER SYSTEHS strate the OPERABILITY'f the emafnfng A.C.'sourcesinoperable, demon-by Survefllance Requirement once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and ff the within'ne hour and atperform1ng least ACTIOH (Continued) EDG became inoperable due to any cause other than preplanned preventative maintenance or

/~fgcgtpio arrl +stl i +din+2 rgsb I

+at ys testing, demonstrate the OPERABILITY of the by performing Survef)lance Requirement 4.8. remaining OPERABLE EDG restore one of the inoperable sources to Of'ERABLE I. 1.2.a.4 within 8 bourse; hours or be fn at least HOT STANDBY wfthfn status within 12 the next 6 hours and fn

d. With two f the ab vc rc fled offsf c A.C. Ircufts noperablc, COLO SHUTOOMN within the following 30 po~er source (offsite circuit or dieselhours. Restore the other A.C.

d ns tc thc ERAB ITY.of 't d1cscl. encrator y pcrf ing generator) to OPERABLE status

'n urv lance pcr 8 quire urs nt 4.8.)i .2a.4. hfn 2 h r and crcaftcr, less t diesel encrato arc least 1n accordance <<5th the provisions a or b, as appropriate with the of Section 3.8.1.1 Action Statement time ment based on the time of fnftfal lossrequfrement of that Action State-ready o ratf ; restore t lcas nc of t 1nopcr lc offs c of the remaining inoperable source o OP LE stat wfthf 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> r be in t least T A.C. power source. A successful test of diesel OPERABILITY per STAN wft n the nc 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> . With o y one o site so cc Survef)lance Requirement 4.8. 1. 1.2.a.4 performed Statement for an OPERABLE diesel or a restored under this Actfon rc orcd, cstorc a east t offsftc frcufts OPERABI. status to OPERABLE diesel w hfn 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> f .tfmc fnftfal oss or fn at )IN(st HOT satisfies the EDG test requirement of Action Statement a or b.

STANDBY within th next 6 ours and fn COLO SHUTDOWN wf'thin the o)lowing 30, hours.

c.~With two'he @bove rcqufrxdgfcsc)generates in+crab)p, gmionstr'ate the OPERABfLITY of two of'fsftc p.C. c/Fcutts ffy,

'Mfth two of the required offsfte of two diesel generatorscircuits s e A.C.. . fnoperab'Ie, demonstrate Surveillance Requirement 4.8.1.1.2.a.4 b

~pcrfurifng Survcf))ance Requirement 4.8.1.1.)a. within,i hopuand least once. pcr 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at .1'east one of hc unless the diesel generators are alread inoperable offsfte sources too OPERABLE o era fnopcrablc dicscl generators Po OPERAS!.E statbs within 2Pours r bg status n at )east HOT STANDBY within thc next 6 Pours and fn COLD S TOOMN s within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be wfthfn the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Following w1thfn thcgo))owing 30 huurS. Restore At least'wopfcsc) gcneJctorp to OPgkABLE Status <<jthfn 7p'houralfrom pfmc op'fn$ a)

J I nt o of tth att Action A tfo Statement St t restora based on the tfme of fnftfal j

)obf or b'e in at least 4)OT USTA)(DBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> an fn e rema n ng inoperable offsfte A.C.

COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. te t( ) of df 1 OPERABILITY S

pe fo d d r this Action Stat

f. one f)xft 2ptartugpransf rmcgr2A or g) fgcpcra+and 4ltJra h EDG 1 n t o f Act on Statement a.

U t2 startupgransfo r ( or ) connectcrYto the same A oy 8 ffsft powcrzcfrcuf&and a&inpfratfvc)y ava) )able to both units,

])Jgx then hould Unit 2 rcqufzc the, sc of the startup transftrmcr Wfth two of t . 17.). f.. ufred diesel a nfstratfvcly pvaf)able to'both units, Unit 2 shal)'dcmonstrat thc opcrabi)fty/6C thc remaining A.C. sources by performing Su

/ance Requirements 4.8.2. 2. Ia. and 4.8. 2. 2.2a.4. within 2 hou and+

f)-7 th OPERABILITY of Requirement t

within

.. enerator offs fte A C circuits by performfng Survef1 lan ce least once pcr 8 bdurs thereafter; restore'thc inoperable startup thereafter; restore one of theonefnohour and a ope ble diesel generators transformer to opERABLg,.statgs within 72 amours 6'r bp'n at>)casu HOT t least HOT STANDBY <<fthfn theto OPERABLE next STANDBY wffhfn the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and COLD SHUTDOWN wfthfn the p6))owing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

restoration of one dfesel gene with the time requirement of tthat emen o at c on atement based on the t,fme SURVEILLANCE RE UIREHENTS successful test of diesel OPERABILITY 4.8.).).2. .4 per Survefllan fo d d thf A tfo St erne 0 a 4.8. l. l. 1 Each of the above required independent circuits between the offsftc ment b. e test requirement of Actfon State-transmission network and thc onsfte Class )E distribution system shall be:

a. Determined OPERABI.E at least once pcr 7 days by vcrffyfng correct breaker alignments, indicated power avaflablfty, and

b. Demonstrated OPERABLE at, least once pcr 18 months by transferring (manually and automatically) unit power supply from thc norma) circuit to the alternate circuit.

- equ red to be completed regardless .of ST. LUCIE UNIT 2 3/4 8-2 fs restored to OPERABILITY. when the inoperable EDG

ELECTRICAL POVER SYSTEH SURVEILLANCE RE UIRENENTS Continued 4.8.1.1.2 Each diesel generator shall"be deeonstrated OPERABLE

a. In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST. BASIS by:

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 pugggp can be started and transfers fuel from the storage system to the engine-mounted tank, (r760

' cg hgegh)

4. er yi th ies I st ts f om+a lent nditi +an cel ate to le 90 ga les~ban eq to~ Verifying the diesel generator can startee accelerate to synchronous speed (966 and~~~ ~c J)hbT g g co . e g er tgt otpfge atey f ethr cyrgha11+e . with generator volta e 0 20 olts d el wi saf er tart s nal The diesel generator shall be started for this test by using one of the following signals:

a) Nanual.

b) Sireulated loss-of=offsite power by itself.

c) Simulated loss-of-offsite power in conjunction <<ith an ESF actuation test signal.

d) An ESF actuation test signal by itself.

g. Ver ry g Jhe ge rat@ liyg chyhtte t addogto eatydr thhtr Dgag + o

~ a~lo raQs wit a ha 1

hh t d

teat chador at Jtrgg grtrater~han r eqgal to 685 least an a iti al 80 mingftes, nd gelt; for +t verifying the generator is synchronized, gradually loaded'o an Subsequently, indicated Wggegggif kK"e and operates for at least 60 minutes.

SIN-ZVS

6. Verifying the diesel generator is alignea to provide standby power to the associated'uergency busses.

At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> by checking for and removing accuuulated water from the engine-counted fuel tanks.

c At least once per 92 days and from new fuel prior to addition to the storage tanks, by obtaining a sample of fuel oil in accordance with ASTH-0270-1975, and by verifying that the sauple meets the foliowing minimum requiresgents and is tested within the specified tine limits:

1. As soon as saeple is taken or prior to adding new fuel to the f storage tank verify in accordance with the test specified in ASTH-0975-77 that the sauple has: dations regarding engine prelube and re9arding loading reconnendatfons '

wa~

e manu procedures.

acturer's and as recognnen-applicable eosThl s band is meant as guidance to avoid o t s and vo routin rou ne overloading of the engine.

the manufacturer or momentary for special testin .under d

- UNIT 2 3/4 8-3 variations a o ue to changing bus loads sha'll due ST. LUCIE not

ELECTRICAL POWER SYSTEHS ~~

~

(ge.

SURVEILLAHCE RE UIREHEHTS Continued At least once per l84 days thejdiesel geneiator shall be started" and accelerated to at least in less, than or equal to 10 a) A water and sedlwent content of less or equal to- seconds. The generator voltage and frequency shall be 4160 + 420 0.05 voluue percent. volts and 60 + 1.2 Hz within 10 seconds aft start signal.

b) A kinesatic viscosity 8 404C of greater than or equal to HS'V 1.9 centistokes, but less than oi equal to 4.1 centistokes. The generator shall be manually synchronized to its appropriate es>>rgency bus. loaded to an indicated 'ae kM in less than c) A specific gravity as specified by the aanufacturer .

8 60/604F of greater than or equal to 0.8 but less than or equal to 60 seconds. and operate for at least 60 minutes.

or equal to 0.99 or an API gravity La 60 F of greater than or equal to ll degrees hut less than or equal to 47 degrees.

2. Mithin I week after obtaining the sawple, verify an $ upurity level of less than 2 sg of insolubles per 100 al when tested in accordance with ASTH-02274-70. i J

3. 'Mithin 2 weeks of obtaining the saaple verify that the other properties specified in Table I of AST$ $.0975-77 and Regulatory This test. if it

.it is perfora>>d so coincides with the testing Guide 1.137 Position 2.a are wet when tested in accordance with required by Surveillance Requires>>nt 4.8.1.1.2.a.4, may also serve ASTH-D975-77. to concurrently eeet those requirenents as well.

Agh d At least once per 12 sNnths by verifying that the autoaatic load eet ehc tt a Optehaht tth the t t al hetm each t e block within z I second of its design interval.

e. At least once per 18 uonths during shutdown by:

I. Subjecting the diesel to an inspection in accordance with procedures prepared in. conjunction with its sanufacturer's recoaxaendations for this class of standby service.

2. Verifying the generator capability to reject a load of greater than or equal to 453 kif <<bile uaintaining voltage at 4160 +

420 volts and frequency at 60 h 1.2 Hz.

3. Verifying the generator capability to reject a load of 3685 kM

<<ithout tripping. Th'e generator voltage shall not exceed 4784 volts during and following the load rejection.

4. Siwlating a loss-of-offsite power by itself, and:

a) Verifying deenerg$ zation of the eeergency busses and load shedding froa the eeergency busses.

b) Verifying the diesel starts'Sn the auto-start signal, energizes the esergency busses with peraanentiy connected $ s es s a e conducted in accordance with the manufacturer's recoen>>n-loads within 10 seconds'nergizes the auto-connected shut- dations regarding engine prelube and warsxip procedures, and as applicable dem loads through the load sequencer and operates for regarding loading recoau>>ndations.

greater than or equal to 5 ~ inutes while its generator $ s ~"This band is a>>ant as guidance to avoid rout$ ne overloading of the engine.

loaded with the. shutdown loads. After energization, the Loads in excess of this band for special testing under direct zonitoring of steady-state voltage and frequency of the euergency busses i

shall be eaintained at 4160 z 420 volts and 60 1.2 Hz the nanufacturer or coo>>ntary variations due to changing bus loads shall not invalidate the test during this test.

ST. LUCIE - UHIT 2 3/4 8-4

ELECTRICAL POWER SYSTEHS SURVEILlANCE RE UIREHEHTS Continued Verifying that on an. ESF actuation test signal (without loss-of-offsfte power) the diesel generator startP%n the auto-start signal and operates on standby for greater than or equal to 5 minutes. Th'e steady-state generator voltage and frequency shall be 4160 C 420 volts and 60 a 1.2 Hz within 10 seconds after the auto-start s3gnal; the generator voltage, and frequency shall be uafntafned within these limits during this test.

Sfuulating a loss-of.offsite power in conJunction with an ESF actuation test signal, and a) Verifying deenergization of the energency busses and load shedding from the emergency busses.

b) Verifying the diesel starts <4on the auto-start signal, 1 energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected emergency (accident) loads through the load sequencer and operates for greater Chan or equal to 5 minutes ~bile its generator is loaded with the energency loads. After energizatfon, the steady-state voltage and frequency of the energency busses shall be maintained at 4160 z 420 volts and 60 z 1.2 Hz during this test.

c) Verifying that all autocatfc diesel generator trips, except engine overspeed and generator differential, are autocatica11y bypassed upon loss of voltage on the ener-gency bus concurrent with a safety inJection actuation signal.

erffying the diesel'generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Verifying thc diesel generator operatcsee or at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Ouring the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator Ourfng the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall shall be loaded to greater than or equal to 3985 kW and dur3ng be loaded to an indicated target value of kff (between QHI-31~

the reaafnfng 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall g$ 3f gNO kff)'~i and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of Chfs test, kff~i~

the be loaded to greater than or equal to 3685 kW. Thc generator diesel generator shall be loaded to an indicated voltage and frequency, shall be 4160 a 420 volts and 60 c 1.2 Hz ffithfn 5 minutes after completing th3s 24-hour test within 10 seconds after the start signal; the steady-state Surveillance Requirement NS'-333 generator voltage and frequency shall be maintained within these .S.i, I.R.eA limits during this test. Within 5 mlnutcs after completing this 4-hour test, perform Surveillance Requires>>nt 4.8.1. 1.2e.4.b).

"This test shall be conducted in accordance with the manufacturer's recoan>>n-dations regarding engine prelube and ranwp procedures. and as applicable regarding loading recocu>>ndatfons.

'ccThis band fs meant as guidance to avoid routine overloading of the engine.-

Loads fn excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not ST. LUCIE - UNIT 2 3/4 8-5 invalidate the test.

ELECTRICAL POWER SYSTEHS SURVEILLANCE RE UIREHEHTS Continued I

Verifying that the. auto-connected loads to each diesel generator do not. exceed the 2000-'hour rating of 098$ k'W.

~)S'er ifying the diesel generator's capability to:

a) Synchronize with the offsite power source ~bile the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offslte power source, and c) Be restored to its standby status.

10. Verifying that with the diesel generator operating in a test mode (connected to its bus), a simulated safety injection signal overrides the test mode by (1) returning the diesel generator to standby operation and (2) automatically energizes the emergency loads. with offsite po~er.

ll. Verifying that the fuel transfer pump transfers fuel from each Verifying that the automatic load fuel storage tank to the engine-mounted tanks of each diesel sequence timers are OPERABLE with the interval between each load via the installed cross connection lines. block within s 1 second of its design interval.

IZ.

At least once per 10 years or after any modificationE which could affect diesel generator interdependence by starting&e diesel generators simultaneously, during shutdown, and verifying that the diesel generators accelerate to at least 900~rpm in less than or equal to 10 seconds..

P Vt.!

g. At least once per 10 years by:

l. Braining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution, and

2. Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection HO of the ASHE Code at a test pressure equal to 110K of the system design pressure.

'iThis test shall be conducted in accordance with the manufacturer's recomen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recossoendations.

ST. LUCIE - UHIT 2 3/4 8-6

~ 'ABLE 4.8-1 DIESEL GENERATOR TEST SCHEDULE Number of Failures Number of Failures In Number of Failures in in Last 100 Valid Last 100 Valid Tests." ~Test Fee et Last 20 Valid Tests" Tests+ ~Test F e ee s At least once per 31 days <<4 Once per 31 days At least once per 14 days >5 Once per 7 days At least once per 7 days

> 4 At least once per 3 days nter a or eterm>n>ng number of failures and riuuber of valid tests 'Criteria for determining number of failures and number of valid tests shall shall be in accordance uith Regulatory Position C.Z.e of Regulatory be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Guide 1.108, Revision 1, August 1977, lFhere the last 100 tests are but determined on a per diesel generator basis.

determined on a per nuclear unit basis. For the purposes of this test schedule, only valid tests conducted after the Operating License For the purposes of determining the required test frequency. the previous issuance date shall be included in the computation of the "last 100 test failure count may be reduced to zero if a complete diesel overhaul valid tests". Entry into this test schedule shall be made at the to like-neu conditions is completed. provided that the overhaul including test frequency. appropriate post-maintenance operation and testing, is specifically approved 31 day by the manufacturer and if acceptable reliability has been demonstrated. Thm reliability criterion shall be the successful completion of 14 consecuti tests in a single series. Ten of these .tgsts shall be in accordance ulth Surveillance Requirement 4.8. 1.1.2.a 4< t ur tests, in accordance with Surveillance Requirement 4.8. I. I.2.gk If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval.

"The associated test frequency shall be maintained until seven consecutive failure free demands have been performed and the number of failures in the last 20 valid demands has been reduced to one.

ST. LUCIE - UNIT P 0/4 R FF

ELECTRICAL POWER SYSTB6 A.C. SOURCES SNJTOOWN LINITING CONDITION FOR OPERATION 3.8.1.2 As a ainiacm, the following A.C. electrical power sources shall be OPERABLE:

a. One circuit between the offsite transmission network and the onsite Class 1E distribution systea, and

b. One diesel generator with:

1. Two engine-sounted fuel tanks each containing a ainiam vol~

of 200 gallons of fuel,

2. A fuel storage systea containing a ainiam volte of 40,000 gallons of fuel, and

3. A fuel transfer puep.

APPLICABILITY: N)DES 5 and 6.

ACTIN:

With less than the above miniate required A.C. electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, soveaent of irradiated fuel, or crane operation with loads over the fuel storage pool, and within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, depressurize and vent the Reactor Coolant Systee through a greater than or equal to 3.58 square inch vent. In addition, when in NODE 5 with the reactor coolant loops not filled, or in NODE 6 with the water level less than 23 feet above the reactor

. vessel flange, immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible.

SURVEILUOCE RE IREMENTS 4,8.1.2 OPERABLE. by The above ah 1~

required A.C. electrical power sources shall be demonstrated

..l...

the.perforeance'of each of the Surveillance Requireaents of

.1,...22 )

ST. LUCIE - UNIT 2 3/4 8-9

3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8. 1 3/4.8.2 and 3/4.8. 3 A. C. SOURCES D. C SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be avai'table to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident condi" tions within the facility. The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commen-surate with the level of degradation. The OPERABILITY of the power sources are consistent with the initia'1 condition assumptions of the safety analyses and are based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source. The A.C. and D.C. source a1lowable out"of" service times are based on Regulatory Guide 1.93, "Availability of Electrical Power Sources," December 1974. When one diesel generator is inoperable, there is an additional ACTION requirement to verify that all required systems, subsystems, trains, components and devices, that depend on the remaining

'PERABLE 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 will not result in a complete loss of safety function of critical systems during the period one of the diesel generators is inope'rable. The term verify as used in this context means to administratively check by examining logs or other information to determine if certain components are out-of-service for maintenance or other reasons. It does not mean to perform the surveillance requirements needed to demonstrate the OPERABILITY of the component.

The OPERABILITY of the minimum specified A.C. and D.,C. power sources and associated distribution systems during shutdown and refueling ensures that

1) the facility can be maintained in. the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control. capability is available for monitoring and maintaining the unit status.

The Surveillance Requirements for demonstrating the OPERABILITY of the

, diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power

..Sup'plies," March 10, 1971; and 1. 108;"Periodic- Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, .

August 1977, and 1. 137, "Fuel Oil Systems for Standby Diesel Generators,"

Revision 1, October 1979> Crt'hl r l'c CgAm 89-15 Propose J 54og PcA'MS 2'~ssrova md osai alai nl>srsal '$rarrcdor lprli alit" da'frd July 2, l>S<,

Sad sSRC- she p> s 6oons r'a'flrahd i'oradmral slo V8 la F.ar;l;Q Dpi-'s'&my Ii C AorspF - 7 ~ p~Q Anna limni'l 3, d4k J Clp<> i 85 1985 ST. LUCIE - UNIT 2 B 3/4 8-1

NO SIGNIFICANT HAZARDS CONSIDERATIONS DETERMINATION BACKGROUND On July 2, l984, NRC issued Generic Letter 84-!5 (Proposed Staff Actions to Improve and Maintain Diesel Generator Reliability). This Generic Letter presents NRC's conclusion that the frequency of diesel generator cold fast start surveillance tests from ambient conditions should be reduced to prevent premature diesel engine degradation, and encourages licensees to submit changes to their Technical Specifications to accomplish a reduction in the number of cold fast start surveillance tests from ambient conditions.

Generic Letter 84-l5 also presented NRC's conclusion that excessive testing results in degradation of diesel engines, and NRC encouraged licensees to propose Technical Specifications to delete the requirements for testing diesel generators while emergency core cooling equipment is inoperable.

Typical Technical Specifications, as well as an elaboration of the example performance Technical Specifications proposed to maintain reliability levels, were included with the Generic Letter.

On April 25, l985, NRC issued Amendment No. 48 to Facility Operating License No. NPF-7 for North Anna Unit 2. The amendment revised the emergency diesel generator Technical Specifications by reducing the required testing. The changes reduced the parameters for each test, reduced the number of tests, and applied to both routine surveillance and special tests. North Anna Unit 2 had requested the amendment based on diesel generator failures that had occurred and had been attributed to the excessive testing requirements, and based on recommendations identified in Generic Letter 84-I 5.

On August 27, l985, FPL submitted a request to amend the St. Lucie Unit 2 Technical Specifications to be similar to the North Anna Unit 2, Amendment No.

48 Technical Specifications. As a result of NRC review and further discussions with NRC, the August 27, l985 application had to be revised. This application addresses all comments/concerns identified thus far by NRC.

~ I

~ ~ I I

d It 'I d I '

It t d ld 1

TECHNICAL SPECIFICATION CHANGES 3.8.I. I LCO: a.

A footnote has been added to allow a Unit I startup transformer, when not being used on Unit I, to satisfy the Operability requirements. This is consistent with the existing St. Lucie Unit 2 Technical Specification 3.l.l.l ACTION: f. which is being deleted for conformance to the North Anna Unit 2 format.

3.8.I. I ACTION: a.

This Action Statement has been changed to read exactly like North Anna Unit 2.

3.8.I. I ACTION: b.

This Action Statement has been changed to read exactly like North Anna Unit 2.

3.8. I. I ACTION: c.

This Action Statement has been changed to read exactly like North Anna Unit 2, and to correct a typo in the North Anna spec.

3.8.I. I ACTION: d.

The Action Statement has been changed to read exactly like North Anna Unit 2.

3.8.I. I ACTION: e.

This Action Statement has been changed to read exactly like North Anna Unit 2.

3.8.I. I ACTION: f.

This Action Statement has been deleted for consistency with North Anna Unit 2.

However, the footnote added to 3.8.I.I LCO: a. in essence is the current ACTION: f.

4.8.I.I.2a.4 This specification was changed to delete the fast cold start requirement on the Table 4.8-l test frequency, therefore, reducing the frequency of diesel generator fast cold starts. The 900 l8 RPM corresponds to the 60+- l.2 Hz.

These changes are consistent with Generic Letter 84-I 5 recommendations and similar to what NRC approved for North Anna Unit 2.

4.8.I.I.2a.5 This specification was changed to allow gradually loading the diesel generator and to include a load band (3385-3485 kW). The 3385 kW value is greater than the worst case FSAR value of 3260 kW.

4 f) )

4

) ),I 4

~ I") I h 4

4 ~

$ 4 4 II

~ ~

)f 4 ~ 4 r, 4

~ ) 4 ~

4 4 ~

)44 I)

~ ~

~ ~ ~ 4 )4 I hl

)'4 ~ ~ 1,

~ ~

~ 4 ~ 4 ~ ~

4 4

4 ~

~ b 4 )

bb 4 1I

)I 4 4 4

4 hf lf I )

v f)

~ ~ ~, ~ 4

)

4 4 4 ff

4.8.I.I.2d.

The present specification was moved to 4.8.I.I.2e. I2. A new specification was added to reduce the diesel generator test frequency for fast cold starts and loading. Diesel generator starts from a simulated loss of offsite power, loss of offsite power in conjunction with an ESF actuation test signal and an ESF actuation test signal by itself are verified under Tech Spec 4.8.I.I.2a.4., and therefore not repeated here.

The 3385-3485 kW load band is discussed above.

4.8.I.I.2e.7 This specification was changed to read the same as North Anna Unit 2 with the appropriate St. Lucie Unit 2 specific numbers included.

4.8.I.I.2e.8 This specification change is to correct the 2000-hour rating value. The correct 2000-hour rating per the vendor technical manual is 3935 kW, and not 3985 as currently shown in the Technical Specifications.

This change is editorial only.

4.8.I.I.2e.l 2.

This specification was added and is the current specification 4.8.I.I.2d. except that the l2 month surveillance interval is changed to an I8 month interval.

The electropneumatic timing relays which required the l2 month surveillance interval have been replaced with Agastat DSC solid state devices which are more accurate and reliable and need only be verified on an I8 month interval per Standard Technical Specifications.

TABLE 4.8- I This table was changed to read the same as North Anna Unit 2.

4.8.I.2 This change is editorial in that Specification 4.8.I.I.3 ~Re orts does not demonstrate Operability of the Diesel Generators.

BASES 3/4.8 These changes include Generic Letter 84-l5 and Amendment No. 48 to Facility Operating License NPF-7 for North Anna Unit 2 as additional Bases for diesel generator testing.

~ ~ I ~ ~

E 0 ~ '" 0 I It 11 4 ~

4 h

I t

• ' ~

4 I . 4 W

4 ~ 0 ~ ~

4 I

II I 4 4 ~

4

~ ~ ~ J r ~

h '$ ll,h 4

~

lt '.I II, 0

lt t 4 4 4

0 0 ~ ~ I ~ 0 I', 'I II' E

1 I,f I" t ' J 4 I I'-' 4 I I tl )

I~

t, . I 0

'I I'1 t 4 I~ ~ t, h 4 I 4 II 4 I I 4 I I 4 0 I

CONCLUSIONS:

As indicated above, the changes are either editorial/administrative changes, changes similar to changes already approved by NRC, or changes based on NRC recommendations included in Generic Letter 84-I5.

Examples (i), (vii) and (iii) to the extent that NRC has previously found such changes acceptable, of the staff procedure for determination of no significant hazards considerations apply to this amendment request.

For these reasons it has been determined that these changes involve no significant hazards considerations.

SAFETY EVALUATION The proposed changes to the Technical Specifications do not involve an unreviewed safety question because:

I. a. The probability of the occurrence of an accident previously evaluated in the FSAR has not been affected since the diesel generators are not considered in determining the probabilities of accidents.

'I

b. The consequences of an accident previously evaluated in the FSAR have not been adversely affected. Reducing the test frequency and modifying the starting requirements to be consistent with the diesel manufacturer's recommendations are intended to enhance diesel reliability by minimizing severe test conditions which can lead to premature failures.

c. The probability of a malfunction of equipment important to safety previously evaluated in the FSAR has been reduced since the severe test requirements have been reduced which will result in increased diesel engine reliability.

d. The consequences of a malfunction of equipment important to safety have not changed since the new surveillance requirements will not affect the operation or operability of the diesels or any other safety related equipment.

2o ao The possibility of an accident of a different type than analysed in the FSAR has not been created since the change affects frequency starting and load practices during testing only and has no impact on actual accident analysis.

b. The possibility of a malfunction of equipment important to safety of a different type than any analyzed in the FSAR has not been created for the reason given in I.c.

3o ao The margin of safety as defined in the basis for any Technical Specification is not reduced by the proposed changes. The changes in the testing requirements do not affect the capacity of the diesels to perform their function. The purpose of the change is to increase diesel engine reliability.

O k a.. ~

J 'N C l

~ " t S A

II I p

a