ML19225A439
| ML19225A439 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/27/1979 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 790621, NUDOCS 7907190331 | |
| Download: ML19225A439 (2) | |
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.T.ute 27, 1979 Mr. E=oyra M. Grt.r Offica of ineraction-and Inforna ent-Pest t " t I Ifnit?d Sts.t== ffuclemr Pachmtery' Cer :e.in f on 631 Perir. A v en' ta Ung of Prnasia, PA AUkO6 y,UME-BF.'RT,/.?j._E. 9CCUno.1rE - y]Qgo_!ITIcr K].
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E. r:. Greenn=n, N icn 1. United Stata. Wuel er Pantalatory C<ml=n ! -n on 6/76/T9 Re ferette e t.
Dr.*ket No. W.777 N* c h
'++t + cgr thits ? a.-d 3 Technical Sp+-irle=* ton F=far-n ar 6 9.2.={p) iLevert 18o. 2-I4-32/1?
Occtrrenea Da*at June 26,1079 Jgentirhntion of Jecury_enp.7 Is, - pnn-- to t M *n str',,i s r-Ti t r*4 57 IP Pn11**t7 ~? ?--9 2 "* ' 151"' l.
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An aly s i s o f Occ tr re-e e :
The s e = = >=== L e s uppa e t e are esther single su; pertg in a piping sygece or ere widely sep3 rated as in th-essa a f t h - o, t t 2 ev rgen c y = = rv i c e w*ter support s.
The ainala HFf'I Support in = =ch mit is for p iping **
- oc i a t *d with the test flew p+th which is isointed f m the inicetion ficw p=th e= cept du rin g ins ting and L
- ent **st i co f f y 6*nlat-d kr initintlan occurr*
during t*..ing.
OP-o f two **n r F*n c y serv ic e wat?r systM Supports on IFii t I and the on. on I N'i t 3 er* 1e-eated on th- ** rv ice wat er side of a normally clo*ed and t od ed w acu s t velve cennect:ng t bc m rg-n cy ge rv i ca water discharga med = erv 6 cn water dischse;r.
Faelure in this location wmild an! in te r fe r w i th eme rg ea n aarv it c werer dativerv.
The n*b-r Unit 2==
- rgan cv **evice water g u:-w rt im suser.)ated with one of the twa r='Nad *n t e v er.s i - leop* wbsch could be 6
- o bs t ad i f n a c e = = ri ty.
The einsta CN su;part on and un i. e 15 w g s c<-i S t nl wi t h si single subsyst***
and la not en piping cannon to tb two wuh s v e t e -S.
The
- tt' Ele derwell i rsert t n.
system support is nn piptnx at *
- igai fic 9nt li* tant- *M feveral ri g id wurpo rts cust bos.rd of the anter :--t=*t-m v a l v e wh i c h
- I rw's wi t h t ha inner 1901stion valves is r*a rm s l l y c l e,cd.
Th ** t,le fi c i en c i e s ermutitute 3**s t h an ene p= re-e t of the tot =1 suppoets enslyted.
The c a lcu l at ions i mathew! used is con *
- rv t t iv a in that ett s t ra, s a r?d lo=le ate co=hiesad to edi t si n the totgi load dur i n g tha D E.,
Ca l e's i s t w n s indicste t h at thee.
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- i ng b a s i e a a rt h.m a l e lhe Ope rat s em s arid S a fe ty hview Conwittea %==
eeviewed this data snd concital** that =mfc epe ra t i o - caa enntinoa un t i l awwii fi c wt i oc a can be e s =a n l e t e 3 l**ign of rhms evdification= h== heaun mad aniific=tlane wi11 he creviate wath6n two wa.ks.
In light o f ther co nt a rv at i v a nature o f the c.aiculat ten aM the very low proh mbi l i ty of e ge n saw even,e occarring during the sho rt rep a s r,** ri nd, tha OLM Cr=== i t t ee hss conel w3ed ebat thesa de fi c i-nc i es
><ve is =inie=1==faty s ign i fi c an ce and that the plant can cent imw i* rat ion.
Correc t _ve Actiert:
The in=tequate Supports will te ct trected opedit t ous ly but in no case not.
t h e e, two w-ek*.
I' rc y icu s ra, lures:
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