ML19259D111

RO 2-79-40/1P on 790821:while Cardox Sys Was Disabled, Continuous Fire Watch Not Maintained in Diesel Generator Bldg.Caused by Failure to Follow Procedure Designating Duties of Fire Watch.Personnel Reinstructed

ML19259D111
Person / Time
Site:	Peach Bottom
Issue date:	08/22/1979
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 7909070459
Download: ML19259D111 (2)

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SUBJECT:

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PEPCKTAELE OCCURRENCE - PRL*TT .WT,TFICATION -

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Conforming. R. 5. Fleistfutsnn's conversEtion with Mr. Grectman. Itegisnt 1  ?.lQ thtired. States Nuclear Regulatory Consismicn ctr F/27/~9. -

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Reference r Docket No. 50-277/278 "

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Report No. 2 / Le .

Occurrence Date: August 21, 1979 .,.

Identificaticn. of Occurrence; . . ..

Failur- to maintwin <:entinuous fire watch. i.n the diesel generator tuilding. ~ ~ "

while the curdox systes was disabled . . .. -

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Conditions Frior to Occurrence:. .

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Unit I operating st rated power

.s Unit .3 eparating at 90% ; e er.

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Apparent Cause of Occurrence. '

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F=1ture to foticw procedure which design =tes duties ef a fire. watch. . .'

Anslysis of Occur.r-nce r - . - - . _,

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on the norning, nf 8/ 21/79. twr seprtr.st e Jr.b5 ---- wi g re .r.ree-d by centrset p rsonncI in. the dieset generator hqildhng. Each of th*=e. Jehs revit*ed that a fire watch be po*ted. The fire watches wre rested per procedure. I.mter that scyming ce? grimp cv. latel.it= task med the fire watch for that greerp fe.iled to restt're the 0.?: =y=r m to term.M in tha EZ diesel generator- hav. He assu=*ed rhet the fire wstch. fer the accend grtwq re raired t.*mt the G)g syste = r* mio cut cf serv 3 ca. Tha tec.rmd groun had..pp, knew. icd t e that thi.s particular secties of the fire protection.

systsvr was put of service vivee th-r were wding in eacther ar-a. As a resutt of these actions the EZ diesel Rener.nor area was,withcet a fire .

_ watch for a per19d of ebout ten almstes L

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--There is no safety significance to this occurrende since there was no T

.e working being dene in the diesel 3-nerater bay during the period that ~

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rs, the fire watch was not present. In addition a guiard remained pested . aUs

' at _the only open entrance- te the diesel g-nerator. building. 'Ibe guard ".f}$'$ "'[

M. stated that had she detected's sache for fire situation she would have C-reportesi the same to shift supervision. I:nother noteworthy fact is '

• 9;7C' C wthat during n IDCA start of the diesel generators,. the C07 systen is 7 E ^-%W W(anatomatically disab.l,ed. ~ ' ~--@%dhW5.OM'.9

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-n Ienedistely upen ' discover.v of .t.his .incide tt r the CW. systrw in the E2 . . . -e .

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- diesel. generator bay was restored to service. The total ti.wr that the - ,Ns. r systes vss. Inoperable coincident with no fire Matth pr se st was about. .'

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. . Upon disernery of this incident all wert in the diesel generster building- . - 4 (.R 7

, rwas halted until all personnel involved. were ninstructed. en the r quirenents- [..T of perfor-ilng work in an ar-s' when a fire watch was r -sted . Afditional.

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centract perse:nnet have also bestr reinstructed in this se=s =atter. -

It is felt thSt with the currecti're acticas autmE ha.e t.hur._xi.11 b

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no reoccurrence. of this typ . -

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