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 ML20129G873 ML20129G901 ML20129G959 ML20129H012 ML20129H034 ... further results
References
FOIA-95-81 NUDOCS 9610070408
Download: ML20129H037 (5)

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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 3

=========================...

PROM:

IOHN LAMBE* SKI, ESQ.

l TROUTMAN SANDERS 600 Peachtree Street, NE Suite 5200 Atlanta, Georgia 30308-2216 DIRECT DIAL NUMBER:

(404) 885-3360 FAX NUMBER:

(404) 885-3900 DATE:

Novernber 12,1993 Cover + y NUMBER OF PAGES:

TS. FILE h.:

71589.71605 i

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THB INFORMATION WHI FOLLOWS AND IS MITTED IS ATICENEY/ CLIENT we, TRADE 5 AND/OR CO INFORMATIONINTEND ONLYPORTHE GANDUSEOFTHE IVIDU j

RECDIENT NAMED /

'E.

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COMMUNICATI

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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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TM v STATUSOFCORRICTIVEACTIONSF01.t0 WING

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a sita' area emergency was declared due to a less of offsite gg h f

On March to,1990,ith a less of onsite emergency diesel generator ca ability, In accordance with Vity precedures, an event review team has power concurrent w review 4

events leading upjpn,f3)1 ewing the site area eserpency. Wh l

ad

- " er pending fina, management review and I for continued safe plant eIratlen have been is ste. These settens sentidored i

toes results are _.

approval 1

n pelicy on control and operatten of i

George Seekhold to all site ponenne151 sstablishment of a man N

laI(seeattached1stterten network ceanunications (see attached h F

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

retesting and calibration of both Unlt 1 emergency diesel gener systeest barricades to prevent unnecessary entry Inte plant swit and sessunications of famediate corrective actions re Q

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Itsensed operators.

evo. v rfnor..

e.sewations which require additional m,ert aise

. These include the l

1. udition, ut.v.at o e

anagemen sidloopoperational 14 sequencine of outs 06 estivities: plant geg ificationsystes l

post maintenance d esel fumettenal testtaEN atuatingthedutiesand l

legtes a upgradest changing diesel generator centv4 gq

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g responsibilities of the leerpenty DiMeter.

Theasstsihnificar,tsecurrenceduringtheevent_eld involved the l

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failure of isseltenerater(08)1 utt11tyandvendertechnical l

cooling. The event critique toessuperts has investigated the 08 f j

n.s Edc4Wa.c. =u

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j facts:

ri.e a.... l,d ing the maintenance inspection in early March i are.

l All three were o.

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.

Following the March 20 event,have a setpoint of 197 degrees F which was f

b.

Switch TI 19110 was found tos F below its previous setting. Switch T819111 esint of 199 desroes F which was appremisstely the same j

approximately 6 gwitch 7519112 was found to have a settei j

found to have a

which was appresimately 17 deereas F below th ting.

i as t nal '

f as Q ISS readjusted.

accepteele to support diagnostic engine tests and was sett J

re stalled.

one of the switches Durine the satsequent test run of.the 08 en b $$,d te he an

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~~~'q a4-es-se aise T-m PuR co 4e a*e93 4 insas eas I-ML @li ***-Ep=W

~ _N M 'ee 11:3 1plS N PCD MNIT1.E i

j were replaced with new switches. A11 subsequent tenking switch (T8 If!!I)d with no additional problems, testing has been conducte The Unit 1 Jacket water tauperature swittnes h d.

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

e.

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 reliebt11ty 1, A test of the jacket water system temperatuN transient durin is in progress. The purpose of this test is to determine the act 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 g

temperature trip.

3. The undervettate start feature of the Unit ! Des has bee the non essential engine trips are bypassed. Jhis change will 64

.a.,pim i

d implementedonUnitIpriortoApril 30,1990.-

M che e and Tecimical

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 Since March 20 1990(including jacket valer temperatures),

g 5.

pneumatic leak testing and air quality iurifd catdm and _su lille ensine sce neren er ness cerrecnve 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 protective instrumentation and controls and any addittenal e i

will be scheduled for refueling everhaul periods.

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

acnt of.r m n *e 411-12-ia ;10;42AM ;

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j Numerous sensor calibarations (' including fecket water i

' temeperatures),

'. engine starts and runs were performed under variousspecial pneumatic l

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i conditions.

In addition, the control systems for.both engines were sub.fected to a comprehensive test program.

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After completion of the control i

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

voltage test each engine has been successfully started 3

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eleven times with no start f ailures.

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