ML20126B175
| ML20126B175 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 01/21/1980 |
| From: | Ulrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| References | |
| NUDOCS 8003060498 | |
| Download: ML20126B175 (2) | |
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,y Mr. Uny ce II. n ef e r O f fi ce of Ins pe c t i on a nd Tn forc e rc u t Region 1 United Stntes 631 Park AvenueNuc ic a r ne gul a t o ry Co mmi n n.t on King of Prunnia, PA 19406
SUBJECT:
REPO?.TADLE OCCUnnENCE '-- PROMPT NOTIFICATIOHh
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Confjrming'W.
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- S T. 'U]1 r1 ch 'n eon ve r9 nt 3 on w 1 t h Mr; n rw ennrin',. -
. Re p;5 nn 1 3 United St ate n Nucinne Re srulatory Commi nn ion on
- 1/19/80 and 1/20/80.-
Ra re rence:
Dock-t No. 50-277/278 Pa n c h Pot, tom Un i t s 2 and 3.
Technical Speci fica tion Re ference :
3.2.D,.1.(c) no po rt No. 2-80-3/IP
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Occurrene. Date:
January 19,.1980
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p.y m gdentification ~ of Oc,oterrence rqi:
ph,,n y-ESn 1/19/80 'nt approx tnat ely-9 :50 PM the
~iio ni t o ri nte, i nya t e m. (b ot h ev> n t t'o t m )
Un j ti 37 o rr-y:nn ra cti s t i on ' ~
wkn de t a rr ine rt to tia n u t, of service ban'ad on inw radi nt inn ren t f o r re n d i n gn.
At t hin tima Unit 3 wa s in a ntertup.nt ab nut 00% power.
Unit ? o ff-gns rArti nt ion ront tor.t ng n ys ten van t
nlno chrvekort un't nt 10: 45 PM on 1/19/00 ft n e p r^ st i ma t a l y was de t a rnt nad to be n ot o f earvica.
At thin t, t m e Un i t 2 was nIno in n n tn rt up at about 30% p o we r.
_Appa re n t Coune _of Occurrencr= :'
.Tha Unit 3'n(f-rns d on tn plurnge in thermi t 4 t.! nn mnn i t ori n e o v -t m wmn out OP
- r. a r v i c e r*n n notertr" c1 "w
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- eila, Tble c :>n t rol valva wms bvon"nad nn1 t h e-Un1+
1 o r r re r v ' i n t.1 on te,' n 1f.n ri n F, f* ytt i e rn wn e no t u rriati tn
- s. rvi r e bv iO:00 PM on 1/10/80 (with$ n 10 minutes o f d i n c o ve ry ),
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The Uni t 7 o f f-ga n cr4 d i n t. t on te n i t o r t w nyateri v e 6ut o r ' o., r vi c e due to on operat.or e rro r, in which tha wrong v n i ve wns clonad, P
This removed the o f f-gan end i n t i on moo t t or t nr. n y s t.a m f rom n e r v.t ce.. Th i ei v81 vin g e rro r was co rrqc ted and the nynten wnn
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re turned to ' narvj ce ' at 11: 4 PM on J / l') /00 Antslynin of Occurrence g
De ca nn e the o r f-r,s, rnal n t.1 on mni to ri ng n ys te n doan not p ro vide a tr.1p functton wIth tbe o f T,i;n n roc omb t ne' r n y 4 e n.i n n ar vi ce and N
beenune both unita vare o pe ra t I ng w.l t.h t b aa t r re coph inc e s ynt ons in nervice, there enn no dec enne in pir.nt. prote ct ion due to thle occ urre nc e,
g Th e o T f-gn a ra d1 nt. t on teni t o re p ro vido
'nl y op+ ent j on 91 dnt6.
The afflunnt from the o ff-gas rec ombine ' sy nte n i n moottored by the mnin off-gns stack radiation monitorn 'which were orcrationsil during thi s occu rrence., Thara fo re, th e s e ~ n.o ni t o rs be i ng out of service for a abort time has minimal sn rety signi fiesence.
g Corrective Ac tion:
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Doth o fr-gns rndintion monJtoringiny atems ware _ returrmd 7t o, nervice. shortly rn) 3 owing:. di enovery.4 An invent 3 gat ionio r enuses -
contJnmn.
Addi tional 'corrart-t ve Lac tion' mny be tsken. upon~
3 corolotion o f thin investigntion.- -
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UlIrich Station Super.intendent i
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