ML19308A437

RO-3-79-31/1P:on 791003,insp Performed in Response to IE Bulletin 79-02 Revealed Failure in Support in Loop Core B Spray Min Flow Line.Caused by Improper Installation of Anchor Bolts.Bolts Replaced

ML19308A437
Person / Time
Site:	Peach Bottom
Issue date:	10/04/1979
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
References
NUDOCS 7910150483
Download: ML19308A437 (2)

Text

-_

~

w= .

l. .z_ . . .. . . . . . . . . . . - . . .. . - . .

,

l .

-

1 p ,

.

. . .

. r9sstucELPW1A 6GCTRIC f***W -" -- -

"

'

Peach escros.atense Power Stulon

-

N .Dennsrivania

- -

l . _ _ ,,

.

. . .U314 . . . . . - .. ... .

_

( -

.Actober 4, 1979 s

l 3dr Sayce H. Grier -

-office .ed Insp-%.and Enfaa:comenc -

Magion 1

-

.. :lfeested States. Nuc. lear Raguhseory,Go,sumission , , , . , ,, .,_

431.Pwck Avenue .

-

• - - - "

King of.Peussia, PA 19496

.

.SB83ECT-: ,REPORTA82 OCCURRENCE PROMPT 1001FTCATIbN -- *

. . . . . . _.

Cenfirming J.K. Davenpoax* s conweesseion wish Mr. Greenman,

?Reginn i, Unirad States Nucinar degulacocy Ce M aaion en October 4, 1979. .  ;

--,

. .

l

.Refecence: Docket Na. 50 258 -

l Feach 40cton Unit.3 l

'

rechnical Specifkation JIeferences.: 4.9.2 H .(9). 3.5.F.3 ,

Aspect No. 3-;79-31/IP .

4)ocorrence Ouse: Ocrahae 5,1979 Titanci;fication .of Occurrence:

Ehe continuing. seismic anchor inspection protram hehng poeformed

-

in response so I.f Bestierin 19-02 has ident-ified a fatiure in a supper.c associated u.t.cn the Una.c 3 "B" icep ears spray minimum flow ~

line. 1 *~O

.

0 D

. Apparent Cause of Occurrence:

Oo -

kupcaper installation of anchor .beizs. ' - - O' D h.. i

. Analysis of Occurrence: v3-~~@ L "

,. La During che inspection of hanger 3-14-MB-S2"1. the two .heles associated with chts rigAd angie iron smyport were found detached from the =mi-i.

Tlie madecy significance is wirnimal because .ituit 3 reactor is in the cold -- J

..

,,

sAusdown condi. tion for refueling and -therefore the cbre, spray system is ~

" -

--*

.

~

'

nat revuited to be operabis. -

.

.

.

.

. 1 Co~rrective Action: I

!

Ancher 5-14,HB-S21 is a rigid angle iron hanger with two anchor bo.lcs.

' Replacement af the 2 failed bolts Mth 6" .Hilei Kwik bolts is in peogress.

The attranment of an acceptaham safecy facter is anticipated within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

i

'

7 91015 0 4-f )

h$0 L

---

, _ .- - .

.

.

.. .

• .. - ..

__

'

. . . -

_

• • ~

-

_,

~. ..e.,_ - . . - 2 - - 6 -- 4 a -

e.a - -

4 4 > = 't> _

• -* L e . e

.

)& ,

.

.. . - . ..

. .

• - - -- . ,

.. . ~.

• j Previous Failuren:*

2-79-33/IP 7-78-35/1F I

3-79-10/17 -

-

3-79-73/IP 1-74-7%/lF '

3-79-26hP ,

2-79-43/1.P' s% 7t*-.i !] l P 3-79-30/IP

.

Very I n s ' <v yen tr= .

fM j//W.,,,. d.*

4

'

W.Y. IIIITICh Stat i<m Sieparintemiene

.

,

l

<

.I ,

. ..

4 l

- -

.

4

, .

l

,

'

l

-

1

+

,

--- -- .. .. . . . .... . . . .

l -. . . -.. . _. . _ _ . .

.

\ D TTD

@ dC g ngng g

. . . . . _ . . . -. . . _ . . . . .

}v gjhj i

- - -- - - - -

..r....----

l . . . . .. . .

1

- .-, - - . . -, -,- ..,. , , . - . . , . . - , , - - - ,

- -.=-.. - -