ML19225A486
| ML19225A486 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/22/1979 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7907190406 | |
| Download: ML19225A486 (2) | |
Text
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f PHILADELPHIA EtJCTRIC CWo WV Peach Bottom Ata= ic Power Station ~
L/
Delta. Pennsylvani.*
17314 June 21 1970 Mr. Boyce Fi. Crier Office n( Inspection and Enforcement
.d g Region i Ik v>
Un.ita l Statea Nuclear Regulatory Covinission I/ '.* b 631 P3rk Avernee g
- g King of Prussia,. PA 19406'
N Q..'%f)b f
SURJECT:
REFOUABLE OCCURF.ENCE - PPO"PT VITIFICATie's 4.
Cage. Region 1,% p$@
V i.
Confitising W. T. U11 rich 's converant ion wi th we.
4, l United States Welear-Regulatory Cc=seission on 6/21/79.
'l
Reference:
Dochet No.50-27a Peach s'Lottose Unir 3 Technical Specificat torr.
Reference:
3.H.CI Repo rt No. 3L :n/to Occurrence (Mee:
Jime 21,. 19""9 Tdentification of Occurrence:
On 6/21/'*9 at apprn v i =isit e 4 r 1 1 :05 ?.M the 8trri r 3 rea cto r== = r==wyv=d frc==
sereica.lue tn the Ic= = o f t he conden a e r. a ctn ser reco-shiner =ys tea Prboarv cootsne pra==ure was reefutedito opprowle=mtety 500 pg i st wh i l e recover'r creration=' w* ee. in progre*s,.
Sesrtup checir il=r= we re enweiere<f mad rmJ w i thd ra ws ! was. i n i t i a t el.. R apa i r = we re si.ad e to the reen==h i n e r s ys te=s.
At app rv, w i== t e li 4:50 T54 starttsp operations 'eare initiate.1 tn **fshtish cnndenw e r va eutur cand i t i on= irt acen rd.ine-wi th cme rnfimmi r riire-new.
Tha s t a rrur vacw ra :- o'-v wa=
meurted
=r r8 is 'i==.
Se
- 1. c. s :w es
-,in o f f-g m e vruck rz.i t-s r in n '.an i t o r starte.] ro show an i n e re e w
- f. ret.
=c vare.
The s t a rtu p v acm s-pe r-p w as shutdown' i -*liaralv.
Win er eir rci s how-ver enne inned t r.
i n : r* * " e.
Thi* r-le=== c on e i m ***I av*e =rr ra v i e= r e l v 50 minnece The me s i -= r-releas, rot. ww=
spprm i-9 f a ly : ne 1 o f T,chn s. 2 ;
Spaci ficsf inn I. i a i. f =,
Tec h n i c a l 'sp ec i f i c.i t i..n re l i e tie.*.
w r.
.. c c..; ed for ics< than 10 =,i e.o r e s durint
,bie t -in s e
,e
- in,iten.n...tv with ch..
relente rha run e.- z e r n r huildir: ~wif venem ware c ' c a : i r- -
,e
- n v a l rie af app ro x ima r c i v 11t of Technient %cc Miestson Irmi's Tb-m- w i-r sir-g a g emi, r.tcase e m e e-i,.= t h-re fn r#, m r.w i m. e - ? v iin nr eh.
r,cnn.,a; trec i fi c a t i nn tinie pplisdnerv c=tinate-i n.I s ca r r rhar :nen i 1 ni civ I nobse ga-were relenced durin; rhis e ant Apparent
(. at s g e o f Oc cu r
,e r :
n-
... ~.
m,e. =..,,,,,,,,,.-
,h.
~ c~a 2.,,,,~~:
...c.-
., -... e.i no n. e nn. l en s i h i.-
nees ith =i;ns*4 rant ff==*an proloer en-entar a=
ic?n
'a=
e nnd en s e r.
Tr:3 9 < fe r-Of the<
i n.cr rf orv en r h e-ar.t t a sr s, 4 s n. > m :4 - c; c - a t r.
T* n 7""* 2 ! 9 f 3 '" f I Ip p'"el MI ! I" f' <- P1**I'Ieet!
i f1 3 g A it c 7:3 9 "' e ) #' 4 e 5n e#fea 4 *- Of~ Ie* s' h..,
,y Spec. l i r-i r s.
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7907196
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Analysis of Occurrence:
7 s_
The fission product gas ~ ~ s ferred from the ftw1 e le t < to the coa.len**r and then to the off-ga.s stack resaatted in a re l e = =
fro = the plane in excess of Tech. Spac. va I nw s.
The raica== was tar =inatt<I as saon==
- n increase in radiation levels at the off-gas stack won i t o r w a s 1 3 *nr i fi + t.
Plant personnel did not receive any radiation eng m ura dog-b-e=u=* of this event No envirocoental impact is anticipated., Safety sicti ficance is ther= Fore mi nim a l.
Corrective Action:
Following the ir.itial high relenta rate, speciel pensisions wer* unde to provida dilution flow to th.. vacuann pwen du ri n g t h e w acu a t i m o f t he condenser mir < pace.
Th is ev *nttwil ly p-rei t ted
-a t *b t !
.'.in g 4 e mienser vacuum sufficient to p mit s cruen o f the uni t to <=rvice.
No *<i li t i ona l releases in exces* of Tech. SpM.. liseits occurmi during the e mtenser evacuation op-ration..
P.wylous Failures:
None similar.
Very truly your.c, a
W.
T. III 3 rich 9tperint mI*at
. Peach Nott<=i Arn==ic. P<wer St a t ion WTU:1jh ps'i h
b (. O
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