ML17285B399

Forwards Justification for Continued Operation Re Emergency Diesel Generator 2 Shorted Turns.Justification Concludes That Diesel Generator Capable of Supporting Present Operability Requirements of Tech Specs

ML17285B399
Person / Time
Site:	Columbia
Issue date:	07/27/1990
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-90-130, NUDOCS 9008060064
Download: ML17285B399 (18)

Text

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9008060064 DOC.DATE: 90/07/27 NOTARIZED: NO DOCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFXLIATION SORENSEN,G.C. Washington Public Power Supply System RECXP.NAME RECXPXENT AFFXLIATION Document Control Branch (Document Control Desk)

SUBJECT:

Forwards justification for continued operation re emergency Diesel Generator 2 shorted turns.

DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: General Distribution NOTES RECIPIENT COPIES RECIPIENT COPIES XD CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 ENG,P.L. 5 5 INTERNAL: ACRS 6 6 NRR/DET/ECMB 9H 1 1 NRR/DOEA/OTSB11 1 1 NRR/DST 8E2 1 1 NRR/DST/SELB 8D 1 1 NRR/DST/SICB 7E 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC/LFM 1 0 OGC/HDS2 1 0 E 01 1 1 RES/DSIR/EIB 1 1 EXTERNAL: LPDR 1 1 NRC PDR 1 1 NSIC 1 1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P l-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 27 ENCL 25

WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99352 July 27, 1990 G02-90-130 Docket No. 50-397 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 EMERGENCY DIESEL GENERATOR-2 SHORTED TURNS; JUSTIFICATION FOR CONTINUED OPERATION

Reference:

Letter, G02-90-123, JW Baker (SS) to JD Partlow (NRC),

"Request for Waiver of Compliance Relative to Technical Specification 3.8. 1.2, AC Sources - Shutdown",

dated July 11, 1990 The reference requested a waiver of compliance to allow for removal of the Division 2 diesel generator from service for the purpose of performing testing relative to a shorted turn condition that exists on one rotor pole of the unit.

A purpose of the testing was to develop information to support a justification for continued operation (JCO) with the shorted turn condition. The testing was successfully performed on July 17, 1990. Attached for your information is the JCO that is based, in part, on the results obtained from this testing. The JCO concludes that the diesel generator is capable of supporting the present operability requirements of the Technical Specifications and fulfilling its design function with the shorted turn condition.

It is our plan to startup from the R5 refueling outage with the existing generator condition and perform those monitoring and trending activities proposed on page 5 of the JCO for as long as the JCO is in effect.

Very truly yours, Regulatory Programs AGH/bk Attachment cc: JB Hartin - NRC RV DL Williams - BPA/399 NS Reynolds - BCPSR NRC Site Inspector - 901A P Eng - NRC 9008060064 900727 PDR ADOCK 05000397 gu(

PDC

JUSTXFXCRTXON FOR CUNTXNUED UFERJ"TXON PER NG. 290-0533 CGNPGN" NT I DEiITIFICATIGN This JCG discusses the discover y o"," indications OT" sho;ted tuPns wl h n a

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pole Qn the Pot Qi 0 T" i1B gBAet'a Ql Gl" DG .. This JCG Tol lows he OPiginal JCG pPepared to document the use OW the Division 2 diesel gener atof to +uJ,-,ill ihe Oper abi lity PeguiPBmenis of Techn.'cal Spec T icat 'n 3/0 8 2v A C SolJPces

~ ~ ShUI. down I his JCG is being pPepar ed to suppoPt the use ok the l3ivision 2 diesel gener atoP to Tullill its por tion o+ the r equirements QW Technical SpcciTication u /+a us x v A ~ ua Sour ces GpBPai Xnga

hEt = at = eight polBs Qn che G'col" which pt ovi de Tie' I

to generace a voltage in the stator of the generatoP. A r otor pole i'~ PequiPcd

~ieid co 'C voltage dr op est has been peP TQPmed and has revealed

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indications OT shor ted cut.ns on one pole Q~ the Potor WQP DG2.

2. tJ ACCI JJFNT CGiXD IT IGNS Diesel genePat o. onsit B powEt apacltv 15 Peru Ped zo assuPB Chat

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s IJB1 design i.: ritits ar e not exceeded for antic:pated opet ationai occur t ences and coPB c ool ing and containment integretv aPB maintained

","GP post t. lated acc": den 5 assuiiling thB of%site powet sy 'tefil 3.5 I"Q.

-vai 'ble.

SU~T" icient Pedundancy is to be arovided to allow the onsite poweP systefAv io peP TOPftt i c.s sa e y TUiict 3GA a5sUm 'ig a 5iligxe TailUPB

. tJJ Coi'"PGNEMT SAFETY FUidCT Gti The GpePabi 1 ity OW the A C. diesel

~ gei1er a'coP and associated distr ibut ioi1 systems dur ing power oper ation ensut es that SU" T'ic ient power wi1 1 be avai 'able to supply the sa""Bty-Pelated equipment r equir ed WGP (1) the sa=e shutdown o+ the accxdent coiidit ioi15 facility witiiin the Tacil and (2) the mitigation and contr ol OT"

'y TilE Gpct ao ' 'y QT" thie powEt SGUPCBS aPB consist cAt with che ini i. ial condition assuftiptions Gf the a$ ety analysis and ar e based Upon filaiAi.ain'ng thc onsite A. C. power souPces and associated distl ibut ion syst Bms Oper able dut ino ace i denit condition=- co inc i dent with an assurtied loss 0, o'T fsitE poweP aAcl the 5ini'gle most l fixit inig Tai IUPB7 3A this 3 case "he loss OT" the DG1 onsite A. C. SOULS ce.

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The funciion Qt the rotor poles is to pvavide the required rator field t 1 Ux to ma int a in ihe pl" Gpet genel" at QI" GUt p Ut voltage ~

4. Q STATUS OF CCt""iFGNENT TEEE Sialidat d ~3=-1976 also pr avides guidance on the signi icance o"

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this cype uf degvadat ion:

"Shavied iut"ns af a minat nature. un'ike shior ced iurr.s in tAB statal may nai necc al ily require irnmediaie reii<suiaiiani. Rotors have been knQNni io QpcPate tat yeaPs N iii a tew r aiidofn shiQPi c cUiis I

between successive turns in the r atar winding. However should ~

subsequent peviadic impedance iesting shaw tne shar ting tu be pvogr essive in natuve. veinsulat ion would be necessar y ta assure r ei iab ie oper at ion".

The foliawing is an assessrnenc ot the activities taken ta determine the pvogt essive nia.uve arid establish a condition moniior ing techniques to give eat ly waving Qn when t"einsulat ion would be war r anicd.

Th ee e'ecivic macillnet y expert~ wev e obtained I oin val 'US cumpanies7 oi Aet ii1an the G, i g'Lf ai i lanUtaCt UPBP ia provide an inaependeni assessment Qt he as QUAd cai1dit iQni Qt the genet atov r a" Qt . Tilese it staff

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siie cafisul anits wc"2 Gb; aifled Q augment the s e evaluat iai1 QU ano tu pl"Qv 'c SPBCiiiC BXPett.ese Gin geiicpaiovs ania Lat'Qe ttutat. 1ng t1tacth Il ies e Ti12 aflsi 2 act v'y Qt the caASUlcaAts iliclUdBd a; eview Qf ihc data fram i<<c examination of DG2 arid DH1. One af ihe shor ted pule caiis fram DGi was dismantled io seek addii ianal 'nfor rnai ion. These consuitanis pr Qvided broad expevtese discussion cancel ning the naiur 2 and cf feces of the deficiencies. They have prepared a wr'itten repart which is availab'2 tov review. They aiso participated in a Suppiy System canfereiice cali including NRC pet sannei in Rockvi11e. i lavyland and Walnut Creek ~

Ca' far'na ori July 1'ih. tu discuss thcit f'ndings and answer auestiuns.

The pooi cause detevfninat ion of the DGl r otor po'e cail shor ts deier ri1inied thac ihe shavis were most likely caused by fair ication detects.

Thc Aat ul B at ih2se dBfBets i wl1BPB 2 GcaL 'ed inadeguat 2 Nei ing o i ihe vavnisii occur'r ed'r aduced less than api irnurn inisuiat ioti betweeri tur'ns.

n atner aveas. tui i inicapsulat ian was observed. There was nia indicat ian af'i gni t icant aging deter ior at ion tnai would lead i'o aciditianai shor'iing with n the windings.

Th's conciu ian is suppat ied by the lack ot significant ribrat 'on ot incr easing f ieid cur r ent tr ends. The extent of the damage is considered io be neglegibie and have no impact on the ab Liiy af the genBPaiot ia caPI' a load a i'is de ign Pated coAdii iafi ~

A. C. voliage dr ap test vesulis ar e pr anaunced in exposing variat ian

'n ifnpedance from even a s-nai i number ot shor is within the turns of the r'G'cor paies. An ELF is pr oduced within tne sharted

turns cr'eating a bucking or apposing flux to the norma'ield flu<

dur ing the applied alternating valtage and thus resulting in a significant change in the inductance 0"," the coil causing a vol-;age balance dif crence when wired in ser ies with a coil with no snar ts. The voltage divides in propor t" an with the impedance.

During nar'mal oper atian. the curr ent thraugh the coil is Dir ect CUl renz ana hU5 the act Ual val iat ion in f ieL d FLU<'~ dul ing Qpet az ion of tl",2 unit is consider ed to be negiegibie and was not detectable during an Qbsel vat ian of the gener a" or ou"put waveforfn and vibr'at ion dur ing unit Oper at ion.

The diesei gener ator is dernonstr ated to be aper able annually by the 5Ucc ssf UL calnp let ion af a ser ies of integrated sur vei 1 lance tests.

) h 'esL in)g includes ~ast s. art si rapid laading. load rej ects) sequentiai ioad appiication and a 2+ hour r un test. )his testing has been completed dur ing this aut age far DG2. Duc to a Schedul ing pr ob lem.

th's years testing r esul;ed in gr eater than 38 hours4.398148e-4 days <br />0.0106 hours <br />6.283069e-5 weeks <br />1.4459e-5 months <br /> of operaticn at equal ta a>> gr cate>> than fulllaad ope>>ation of DG2.

Thc unit has a'sa been subj ected ta an e~ftended rur Qf 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

Tn 15 25). 1ng was accompl 'hed with the un) it opera-': ng at f ul load.

hiS testing was Wailawed by another otar pole A.C. voitage drap test The results af this test indicated that the voltage vaiues faun during t):2 ir.itiai e~arninatian have not change= )which canfirfn)

'at th)e shortcd t u, n dam)age in pale 6 o-." D)-:- is st'able.

This JCQ estabiishes that the unit is oper abie and capableaf succe. fuiiy ful .illing its des'gn =unctian upan demand.

C Q 7I IQM f P gag gag) ) MF) CQg)M f ~

ILIMn Qwl RP Surnlnar v'This JCO can be surnlnari "ed by the -.'0'owing gener al st a t c ment's.

l h)e pl esent conait ian 0 . thc Unit is known)

The funct ian unit has been ver if ied to be capable of per far ming in the pr2scnt'ond1t 10n ~

it'5 design The unit candit-'an is not ant icipated to change.

The unit conditian can 'be monitor cd using a variety 0-,

parameters dur ing operation and wiii be pev iodicaiiy t'aken ou.

0)" service ta perform a>>oto>> pole A.C. voltage drop test ta trend this phenarr)enon.

The capability of the unit ta pe>>farm successful iy is known,for shor ted condit ians which evceed that af the pr esent >>otal con dit 1 0) i 1

I Th>> pres>>ni Scacus of ihe Division 2 diesel generator has been deter mined oy inter nal exafninat ion electr ical test ing. and

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opcraiional testing.

The unii successfully ccfnpleted a ser ies of annual iniegr ated tests wilich wet e brief ly addr'essed in the above sect 'on. The uni wa taken Qut af service;f ida s. June 29th. to measure and canf irm adequate bearing QLl levels. visually icispecz ihe, stator end turns and per ful m rotor pale A. C. voltage dr cp tests. The bear ing oil levels wer e centered within the rniiciirnurn and high o l level marks. The stator was found to be in exce 'Efli cccid" i oci ~ One Potu!'ole 5iiowed LfldLcat iGns Gf 5ofne shut t ill'g w Jiliici the cuils ut che pale. Al 1 po es appear cu be ici gcod condiiion physically.

The condition uf iiie r uiaf pule Ls cuflsLdBPed by site sheaf ~ afld outside cacisultaciis to be accepiable wiih shor ted turn5 a5 they pose a neglegible etfeci on the flux f 'eld of thai rotor pole. The rotor pule A.C. voltage drop test is a goad test to indicate ihe existance uf siiorts within the roiar pule but does not provide a quantitative assessrneni of the number of shor ted turns within ihe rotor pale. Due to the f lux buc!< ing/opposit ion nat ure of the shor t ed iur ns. a small number at s<<oried iurcs can significant Jy atfcct thc A C. valtage drcp test. As

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'nd cai Bd by D. C. and resistance m>>asurcfneni icsi icig Gf fle Di 1 I'ui QPi ver'y 1" ct 1.B chafl ge Ln these va 'Es aPB noted wl ien 5i gn cilange ' the A.. pole vo' age df ap test occurs.

'" caflt Cocsuliat ian wiici ndusiry experts ind cat es chat fileasurao ' t - Ux

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f iei d intecisiiy change is nat expected io uccul with D. C. Gpcrai ing sa ' age ~ I i:Ls 5 con Lrmcd b's a PevLew of the tield current Pequir cd tar

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full load oper aiicn and the vib, ai'orli JBVB 5 GVBP tn>> Pa57. t V>> Veal 5 ~

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Ta canfil m DG2 operabL 1iiy and rnanitor i<<." propagate on of the shor t'ed tul ns is occur'Pingi th e diesel genet ataf was subjec ed iG Exi.ended Gpel atiuii dul'~Liig a 72 hoUI P Un beg inn Lf ig ol i FP i day July 13th.

ThLS i est p laced DC2 n parallel with the offsiie source with ine unit L,

loaded i 0 Y'at ed 1 cad This ie t was followed by a rotor pole A.i.

'su ' age drop test ~ TilLs exam'naiiGn revealed nu change in ihe r ator-cocidi icfi As alit icip di i.he A C vo ' age drup test. PB5U is were un chan ged.

h>> generator A.C. auiput vuliage wavefarm was muniior cd dur ing the abuve testing. The purpuse was to confirm that there was no defcrmaiion ut this wavefarm. A defor rnaiion of the wavefurrn may accuf as a result of shor ied iurns wiihici tnc rotar pales. pictures of the wiave . QPN wel c Obtained acid nu def oi mai ion wia5 dLscGvet Ed A fur ther discussiun af rotor pole shor ted tur ns is contained in Ai achrileni 1 .

lhe condition o+ the shar ts is stable and nat anticipaied iu change.

This was contir rned during ihe e:<tended r un discussed above. The Raut Cause far the shor ted turns on the DG1 rotor ha5 Lndicated that these shorts wef = noi causin~ accelerated degradai:Qn af the insulaiian system beyond ihe damage 5-te. The r otar pales far DG1 were subj ected

to.high ainper age and voltage (approximately o X nur'mal) to locate the shor ts. his addit ianal str ess did nat result in appar ent degr adat ian Qf the insulat ion GU'c5ide Qf the local i=.ed ar Ba of the discovered shurts.

he candii an Gt the ratar pales an Di2 can be man'tat Ed alid trended to detect can<dition< chaflge- I his LCD pt"GpG525 a nUiAber Gt pal ameters lNhic<< tN'1 1 be inon< liar Ed dUt il <g thc pEt iodic SUr'vei i lance Of thi 5 diesei generator. Addi c iona i per iodic roiur poie A. C. voltage dt up

<<est ing >3ili be perfurri<ed to directiy corn<pare the condition Gf the t~otaP p0125 Nlth tl12 data Gbia ned. This candit iun rnanitat ing act iviiy can adegua<. 2*y det ec uegr aciin g con<di c 'ns t 0 ai ol<s car r ect i <<2 ac'c Gn to be taken if it is re~uired pr 'or to lass af the generator due ia

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5hur ed t UPns he fai io~ing par ameier 5 shal i be recarded and tr ended dur ing r out ine sUI vex I lance act iv3,t iesv Field Cut rent. (At Bstabiished voltage and unit loading)

Gener aior Vibr ai ion Levels.

A I"Qt Ql po 12 A ~ C~ voltage dPQp t esz Y3. I 'e per fQt inc d zuartcr ly and this daia campar ed to existing dai a to assess ir any canditian change is cccurt ing. This cr'ata xiii be tr cnd ed to ass2ss the Pate af c:sang<2 ~ Sufnestat 1st ice 'aP ia ion Xi1 th 3s da7 a base f<1ay occUP aue 0 <.

nut ina <AQi1iiuP i<i g da a scati el'l1d noi be i <ndicat ive 0 degradiiig L candi~ians. The trending data casa wii be Used ta cai1 it'fn a degl adding tt 2nd and ~viII resuIt in corrective ac ".ion prior'a lass at i3G 's

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abil '.ty tu per fut in its safety tunction Same fiexabiiiiy in the condition of ihe rotor poies. Pe'ative tu the A< C ruiur pule vo 'ag2 dt up E'st E'x i5i5 Ii is knobN thai ihe condition can be significan<t 'y worse and the unit st cafi<p" Bti<<g its function. The A.C. puie va'tagc

e capabl af drcp test ot ihe r Gtot puces of OGI demonstrated thai no signiticani operaiicnaI etfeci wiII accUt at polB vo-tage dt Gp iiApEdance Qalaflce ratios Gt appro.:iM<.BIy Zui- G< <<ra vo 7 5 Gn< 7 <<2 5<<OP72d 9 0 1 2 ~ Tn: 5 can d 3. t 3. Gn l><as noz Bd on<

'<'ilth no appaPef<i li <uicai:on< Gt fnal . Ui<ct 3.un 6.0 CQi~CLUSTGN The above ar'guments suppart the conciusian that the unit has the capabiiity to suppat "'he present operabiity t Bquit.ernents ot Technicai Speci f icat ian 3/~. B. I A C. Sources Gperat ing. The unit is

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considered to be aper abie and capable of providing erncr gency AC power ta fultiil its design %unction.

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r Irt 7/ir D gin-tot /Date anage>" t at e Cha1r man/Date

~z tW PGC Ntg. Na PCI At t achment 1 Rotor Pole Shor t ed Turns The r atar of the Division i and Division 2 diesel gener a or's contains 8 po Bs I'nich ar=- wound using ~S Sauat"B capper nc osed in daubie Dacron gla55 l5Ulaiian. Each t otor contains 0 1 turn5 of th 5 w t e Thc poles at e approx 'nai eiy 44 inc< ies lof lg and ihe w il' 1 5 approx 1 fnat e lv 3i'o inch squat C.

Yiinol 5;-Iat ts between t UI"I-:5 of rotor poies fnay t'B5ul t fPoini l

f fer cnt causes.: hese causes include manufacturing def iciencies7 5evel"a'i rnai QP elec;t ical tt ansients~ insulat ion uegradat1ani. and sevet.e ovel >>eat 1ng ~

Exaln'nation of the sharied sections af ihe rotor pa es fraffi DGl i+ave Adicated tha "<<ese 5ihGPt5 uccUPI cd dUt iAg the -.abt icat iaii pt"Gce55 and frlav Iiavc t e'SUit=-d from the inic';usion of fot eign fnai.er1ai beiwiBIi adj acGILT windinigs. The fabr icai 'ni of these iar ge poies is di ff icuit.

The t ator pale A C voltage dt"op test is a pa5t assel'nb iy test perfot fned at the factory ia assure ihc winding and assernbiy activity is accofiiplished SUcce5sf Ul ' Field r'Gtor candlt 1GA test 1lig 1s floi. a PGUt irle pBP 1od c test. it was ifnp iefnented ai NPlP-2 due io the naiur e of he cause of the discover ed shot ted turns within the r otar of the Division 1 diesei generator following the beat"'ng repair effort as a final check after bear ing r Bpair.

The Raot Cause af the r'oior po'e Sha. ts for DG'as been determined to oe fabt 3.cat 1oil Pelat ed'he effects of shor ted t ur ns within the r otat of the diesei gener at or may include.

1) Severe field coil snar ting can reduce the fnagnetic flux produced by that pole and hence reduce the output YoltagB genel aiBd 1n the siatar coils. The voltage r eguiatar will incr ease the f ield cUPI cnt as necessery to maintain ihe aver age gener ator autpui voltage. Depending cn tile quantity of shorted turns. this increased f ieid cur r ent can r esult in an incr'eased load an the

excitation system and increased heating in the affected field coiis.

2) Sharted turns can cause incr eased heat ing within the r atar paie where the shor ts exist. This heating wili potentiaily cantr1bute ta the accelerat ian of the 1 acal i"-ed degr adat i an, Thi s effect does not usually result in a pr opagat ion of the fa i lure beyond the 1oca1 L ed dafnage sxtee

.) Tne reduced flu at the pole with the shor ted tur ns can result in unbalanced for ces across the air gap causing 'vibrat ian.

The f ield current requir ed to suppar "; gener ator =ui1 iaad fram the NNP-2 design cur ves is appr oximateiy 14 amps. ~

The excitation system rated to supply i&8 arnps. This capability exceeds the required amperage and thus the vaitage regulator can pv ovide the additional arnper age to compensate for shor ted tuv'ns and stiii assure adequate The unit pr esently r equiv es approximately gener ator output VQ1,tage.

135 amps for ful1 ioad aperatian. The actual emer gency loads ar e less than the r ated laad af the diesel gener atar (less than 86ii which ~

provides additionai mar gin in e;-.citation sys.em capability.

Loca 'nd gener'a 1 aPea heat I.ng Ls not consider ed to Qe s igni f icant iy gPea:.e than normal at thi Ls t ime ~ ThLs heat Lng ef feet Ls dit ect iy reiated to the f ieid cur rent. This cur rent is present iy less than expected franca the r egula1ar design performance curves. This current

.:s not significantly gr eater than that anticipated.

Examination Qf the  ? otal pale coils Panl DGl has nat found evidence Qt overheat ing.

Linbaianced r otar f lux values can result in inc, eased vibs atian levels.

The vibr ation levels Qf the diesel gener atar i 5 lAQnita. ed dut Lng periodic suv'veil lances and has nat been found to be abnormal. The vibration ieveis have been faund ta be minimal during all previous sut veL 1 1aI lees Past v't at ion xevels have been review u, ThLS data does nat indicate a significantly incr easing tr end. Future vibration leveis wili be care.uliy Pevewed to dater mine if an incr eas.:ng vibv ation ".vend is occurring which can be attPLbuted to accelerated rotor po'e coii degradation.

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SAFETY RELATED CONTROLLED COPY 10CFR50.59 EVALUATOH PROCESS FLOW CHART NOTE: The 10CFR50.59 Evaluation implementing processes will typically address items 1 through '4 only and the US/ Analysis would be processed only if required by an affirmative response to question 2, 3, or 4.

.

YES HO

1. Is a change to the NHP-2 Technical Specification I I necessary to implement this activity?

2. Does this implementing activity constitute physical change to NNP-2 as described in the a I I ~J FSAR or not in the FSAR and affects nuclear YES safety in a way not previously evaluated?

(1)

3. Does this implementing activity constitute a change to a procedural commitment as described in the FSAR?

4. Does this implementing activity represent a special test or experiment not previously described in the FSAR?

If question 1 is answered YES, then prior NRC approval is required prior to implementation.

If either question 2, 3 or 4 are answered YES, then an US/ Analysis must be performed.

YES (2,3,4)

I(1.2~3e4)

5. Does the Unreviewed Safety guestion Analysis I I I I HO identify the implementing activity as YES NO YE~ representing an US/?

Refer to Attachment B.

I Activity may not be fully HRC StafF implemented without prior Authorization Implement HRC staff approval. Rece1ved Activity NOTE: Upon POC approval,, partial implementation may occur without prior HRC staff approval.

Prepared Date Approved by Date Attachment A.

PROCEDURENUMBER REVlSlOl4 NUMBER PAGE NUMBER 1.3.43 1.3.43-10 of 17 WP 598 R1 @45)

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Bar the engine over until the next pole. is aligned in the

.same position as the previous pole. is is the position established in step 8.

14. Repeat steps 10 thru 13 until all the pole voltages been measured.

Pole

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Sf' g~eSrs>dC SS >~ ~ have'~>~g Pole 2

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~88,'ole 3 Sv Pole 4 ~~44./ Veldt su+ J/as' Pole 3 ~8. 8 /Pd 3@. Dug PNÃ Pole 6 Pole 7

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~Ps $ 90 QPo l.g A~PA/peg Pole 8 ~S~. J. 7E

15. NDE TO perform a Bore scope inspection of the generator stator and record on video tape. ~

c,-e 9-9~

16. Terminate the the field leads within the regulator cabinet I.A.N PPM 1.3.9 determ/rete sheet.

c A,5 16 Replace the lower .access cover i pection hole covers

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Note the lockwashers being re-installed are flat

'f or deformed'replace them witn new washers

18. Replace the inner housing access covers Tighten the bolts until the lock, washers are flattened. Do not over tighten the bolt