ML19225A439

RO 2-79-32/1P on 790626:as Followup to IE Bulletin 79-02 Revision I,92 Class I Supports Identified as Possibly Failing During Dbe.Caused by Inadequate Design.Mods Will Be Implemented

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)

Text

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during t* . .ing. OP- o f two

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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 *

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--t=*t-m v a l v e wh i c h

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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: hpo rt Na. 3 74-10/IP verv resly voore, 7[[T-----.. - . _ ~v.T.oii m e ,. r.- k St4t8c"1 bt 4U4* T 4 fit **145FV1 e Z ( ? Y,1h$$',y 73-/', s?, h ' ,'.%*4Q*,c:,'x > 4)*"k.g' ^

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