ML20129H037

Forwards Status of C/As Following 900320 Site Area Emergency Re Vogtle Electric Generating Plant

ML20129H037
Person / Time
Site:	Vogtle
Issue date:	11/12/1993
From:	Lamberski J TROUTMANSANDERS (FORMERLY TROUTMAN, SANDERS, LOCKERMA
To:	Robinson L NRC OFFICE OF INVESTIGATIONS (OI)
Shared Package
ML20128F432	List: CLI-94-05, Discusses Commission Order,CLI-94-05,affirming in Part & Reversing in Part LBP-94-06 Re Release of OI Rept ML20128F428 ML20128F447 ML20128F465 ML20128F475 ML20128F489 ML20128F495 ML20128F526 ML20128F542 ML20128F567 ML20128F586 ML20128F609 ML20128F685 ML20128G131 ML20128G152 ML20128G229 ML20128G249 ML20128G267 ML20128G283 ML20128G303 ML20128G317 ML20128G348 ML20128G379 ML20128G431 ML20128G606 ML20128G630 ML20128G716 ML20128G828 ML20128H268 ML20128H290 ML20128H311 ML20128H333 ML20128Q071 ML20128Q076 ML20129F252 ML20129F457 ML20129F532 ML20129F554 ML20129F587 ML20129F716 ML20129G407 ML20129G457 ML20129G551 ML20129G624 ML20129G845 ML20129G901 ML20129H012 ML20129H034 ML20129H037 ML20129H040 ... further results
References
FOIA-95-81 NUDOCS 9610070408
Download: ML20129H037 (5)

Text

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j TELECOPY1RANEMITTE SHEET j / 10: .

Mr. Iarry L. Robinson Omoe ofInvestisations Nuclear Regulatory cnmminalan 101 Madatta Street  !

Suite 2900 i Atlanta, naa=la 30323 FAX NUMBER: 331-7038 i

TELEPHONE NUMBER: 331-6509 MESSAGE: PLEASE SEE ATTACHED  !

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===========================...== l PROM: IOHN LAMBE* SKI, ESQ.

l TROUTMAN SANDERS

! 600 Peachtree Street, NE I

Suite 5200 l Atlanta, Georgia 30308-2216 DIRECT DIAL NUMBER: (404) 885-3360  !

FAX NUMBER: (404) 885-3900 DATE: Novernber 12,1993 NUMBER OF PAGES: Cover + y TS. FILE h .: 71589.71605 i

I THB INFORMATION WHI FOLLOWS AND IS

/

MITTED IS

. ATICENEY/ CLIENT we, TRADE 5 AND/OR CO INFORMATIONINTEND ONLYPORTHE GANDUSEOFTHE IVIDU j RECDIENT NAMED / 'E. IF THE OF THIS MESSAGE NOT INTENDED JU ARE HEREB NOTIFIED THAT ANY VIEW, U E, COMMUNICATION DISSEMINATION, UTION OR CO G OF "

COMMUNICATI IS STRICTLY PROpuumu. IF YOU HA aMfTVED 1: COMMUNICATI INERROR, _ _ - -

IATELYNOTIFY GERCHI OFF i BY TELEPHO AT (404) 88.43361 RETURN THE ORIG AL MBSSAGE US i AT THE 3 ADDRESS THE U.S. POSTAL CE OR OVER$IGHT j DELIVERY WCE AT OUR . THANK YOU. /

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! i 1 STATUSOFCORRICTIVEACTIONSF01.t0 WING @uld

! RhRCH to, 1990 g f Kgg v sitt AntA tMtAttNCY l d5 l gg ofhoffsite ;

a sita' area emergency was declared due to a less f On March to,1990,ith a less of onsite emergency diesel generator ca ability, power concurrent w 4

In accordance with Vity precedures, an event review review team has l l

i events leadingadupjpn,f3)1 - " er pending ewing the site review fina, management area and eserpency. Whl

! toes results are _.

ste. These settens sentidored -

1 approval i I for continuednsafe pelicy onplant control and eIratlen operatten of have been is I N sstablishment of a man George Seekhold to all site ponenne151 F laI(seeattached1stter es ten network ceanunications (see attached hl eespiste

' upgrading of emergency notifi from Soorpe teckhold to all Emergency Dinctors and Ceaunlasters):

retesting and calibration of both Unlt 1 emergency diesel generl systeest barricades to prevent unnecessary entry Inte plant swit and Itsensed operators.

sessunications of famediate Q gcorrective

&J actions re l evo. v rfnor.. e.sewations .

l 1. udition, ut .v.at o anagemen e . These include the  !

which require additional m,ert14 aise sidloopoperational  ;

l sequencine of outs 06 estivities: plant geg ificationsystes l l

post maintenance d esel fumettenal testtaEN legtes a atuatingthedutiesand l

upgradest changing diesel generator centv4 responsibilities of the leerpenty DiMeter.

+ gqg l involved the i l Theasstsihnificar,tsecurrenceduringtheevent_eld failure of isseltenerater(08)1 utt11tyandvendertechnical l

j cooling. The event critique toessuperts has investigated the 08 fa facts: =r. l j

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maintenance inspection in early March

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l o. ri.e a .... l ,d ing the All three were

found to be set kie 1990 (by approximately 618 degrees F above the setH. int).

! adjusted downward estag a calibretten technique that may l that previsesly.used.

1 all three switches were ngnin bench tested.

b. Following the March 20 event,have a setpoint of 197 degrees F which was f Switch TI 19110 was found tos F below its previous setting. Switch T819111 j

approximately 6 esint of 199 desroes F which was appremisstely the same j

f found to have a

as t nal ' ting. gwitch 7519112 was found to have a settei as i

Q ISS which readjusted.

was appresimately 17 deereas F below th sett accepteele to support diagnostic engine tests and was J

re stalled.

b $$,done of the switches te he an

e. Durine the satsequent -d test

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-.* .of.the

. . . ' '08 en maam , ,,

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' a4-es-se aise T- m PuR co 4e a*e93 4 insas eas I-ML @li ***-Ep=W ~ _N I M 'ee 11:3 1plS N PCD MNIT1.E .

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j were replaced with new switches. A11 subsequent tenking switch (T8 If!!I)d with no additional problems, testing has been conducte

d. The Unit 1 Jacket water tauperature swittnes h

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Subsequent testing indteated that the diesel annunicater indica is reproduced en a high Jacket water temprature trip.

Narch 20, 1990 Based en the above facts, the event review team concluded that t ghgerature switches were the most probable c the fo11 ewing actions are being implemented to ensure a high s l reliebt11ty l 1, A test of the jacket water system temperatuN transient during l is in progress. The purpose of this test is to determine the actl

' water temperature at the switch locations with the eneine in a no ,

standby lineup, and then fellowed by a series of staff,s withou the engine to replicate the starts of March te.  ;

t. Operaters are being trained prior to their next shift to ensure th understand that an emergency reset will override the high Jacket w temperature trip.

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3. The undervettate start feature of the Unit ! Des has bee

.a.,pim i

the non essential engine trips are bypassed. Jhis change will 64 d implementedonUnitIpriortoApril 30,1990.-

che e and Tecimical M

4. GPC is evaluating the possibilitbof a dosiJacket w ter hfgh temperatun Specification change te delete t enstatial engine trip. -

SpC hos performed numerous senser calibrations

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Since March 20 1990(including jacket pneumatic leak testing and air qualitysce valer catdm and iurifd temperatures),

_su lille ensine neren er ness cerrecnve g

at wta and runs andee wartaun =adet'en ge inc1' enslusury EPG's estersunation %aTthe Ol's aM operable.

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SPC will continue te work with the Traneamerica DeLaval Inc troop to japrove 08 MHebility. GMT Wl)) aise review possible t i

i protective instrumentation and controls and any addittenal e will be scheduled for refueling everhaul periods.

the SPC will centinue to work with the !!T and an intepen guarantine.

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Numerous sensor calibarations (' including fecket i ' temeperatures),

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'. engine starts and runs were performed under variousspecial pneumatic le conditions.

In addition, the control systems for.both engines were sub.fected

{ After completion of the to a comprehensive test program.

control i .' under voltage test was performed logic test sequence, an Including the under i

3 voltage test each engine has been successfully started i.

.. eleven times with no start f ailures.

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