ML19268A258

LER 79-019/01T-0 on 790621:during Seismic Support Insp Program, Reactor Core Isolation Cooling Piping Anchor Discovered to Have Two Bolts That Could Not Be Torqued. Caused by Improper Installation of Bolt Shells

ML19268A258
Person / Time
Site:	Peach Bottom
Issue date:	07/06/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19241B440	List: ML19241B439 ML19268A258
References
LER-79-019-01T, LER-79-19-1T, NUDOCS 7907170166
Download: ML19268A258 (1)

Text

di n. e a n u.1,s.t.

l1- 19 )

is . ta ut.L L A H ni t .t # L ,g U t i v' c t )n.11:J son li i t 3 LICLNSEF EVLN l(LPOlli aeport No. 3-79-19/1T coNrsoLutoco l l l l j l l (PLE Abt PHIN T OH IYet. AL L HLQUlHED IN F OHf.1 AflONI i o@

o Ii eiAlPIB lS I 3 IGL.oI ol -lo LICENSE o oI o o - o'oIQI4l1li i J 9 LICENSEE CODE 14 15 NvMsER 25 2 r, 1 I il@ si carl so1G license TveE Jo CON'T

o i!

6 7 9j@

1. 4 C'O%W LL_]@l o i DOCKET bl s I olNuutsE- 1He l z 17 laus lQi EVENT Les 016OATE 12l1l7l9l@lol7[o 14 S REPORT DATE C LvtNT DESCRIPTION AND PHOOABLE CONSEQUENCES h o / l Ac r2M of the ceicmic support incpection program initiated by IE Bulle-  !

oI. I tin 79-02, an anchor associated with the RCIC piping was found to have I o1a l two bolts which could not be properly torqued. An ongineering analysis I oI, I was perfaced and determined that the anchor would not be capable of l o 6 [_ withstandirs a corabination of operating and seismic icads without over- I

,oi 'il stressiv the other anchor bolts. Safa:7 si.mificance is mia N , sinca i io u l HPCI was available and probability of a seismic event is small. I i ae a SYST E M CAUSE CAysE COMP VALVE COCE CODE SUSCODE COMPONENT CODE SUSCODE SUSCODE 7

olo d 9 l C l E l@ l B l@ W @ l S i U l P l 0 l R lT l@ [Bj @ l Z @

10 11 12 13 14 19 20 "f OUE N TI AL oCCU A H E NCE REPORT HEVISION tg anig EVENT YE AR R EPORT NO. COUE TYPE NO.

@ REPo0T l 7l 9] -l [ol1l9l ],/l lo l1 l lTl l-l lol

_ 21 27 23 de 46 77 2tl 29 30 ll 32 At. l i O *4 r u r u s 4 s. EFFECT SHU 1 GovvN TAKEN ACTIUN A TT ACHME NT NW A D-4 PRIMC CCMP. LOYPONENT QNPLANT METHOO HOOHS 4 SL8MITTED FOHM aute SUPPLI E R MANUFACTUREH

.lololo oj LA_J@LF_J@

JJ J4 l34Z l@ QJ6 J +. 40 lY l@

41 lY l@

42 lNl@

43 l Il 210 44 94/ l@

CAUSE DESCRIPTION AND CORRECTIVE ACT!oNS R--] l The failure to reach the troper teraue was caused by improper installa- _]

[: i, I tion of the bolt t tells. The defective bolt shells have been removed and I p' i . j [ replaced by wedge type anchor bolts. An additional support strut has [

pgl been installed to increase the load carryir.g capability of this support 3 r ;- l to attain a minimum anchor bolt c1fety factor of five.  ;

r acii iT y a STATUS VE Tl*CD CF

%*OWER QTH E R S TA'. US DISCOVkRY i

rq l C g 10 oo@

a j 'n 12 N/A l l big l visual Inspection DISCOVERY DESCRIPTION 4/

g 11 44 45 4c AC Tive l y LUN TENT Re LtE L L A',, EI) PF H L L k A~,b AMOVNT CF ACTIVITY -

LOC A TION ')F HE LE ASE

• Li_l LZJ @ I Z !@l N/A l l N/A l 6 '3 ,0 44 45

.. . son . ma:.u.I. a PO N U MlJ f H TYPE O E SL H4 P TION 'N Pij010 0 !@l Z l@L NA t 1 ') 11 17 13

• E RLONNEL INJVRIES 30 NUMGEH OEf CHIPTION E, O l o i 0101@l , i, i2 N/A l I U' ' i)l' illt [j AM AGf TO F ACI LI TY ,

1 'P1  : H ?,Lisiv i10*4 F ii  !@!'t3 N/A ,, 3 7 0 / M j

i s 'l 1)

,, l'.gy t LHiPT ON I tu_aL1!@lm N/A -

j um i i i i iItiiiiiiI-(o.

N.w e a g negAneR

! M. J. Cog m ! mgug c i, ou (2W 8414020

- 1 vy?