ML20147A905

LER#78-035/03L-0 on 780908:steam Leaking from Ventrom Vent Line.Caused by Cracked Weld.Repaired by Welding Externally. (Encl to 7809220138)

ML20147A905
Person / Time
Site:	Dresden
Issue date:	09/08/1978
From:	Ralph R COMMONWEALTH EDISON CO.
To:
References
LER-78-035-03L, LER-78-35-3L, NUDOCS 7809220142
Download: ML20147A905 (1)

Text

_ _ _ _ . . .

U, $. NUCLE /3J HLGUL AI UH T LUW'im i

~ ~ -

p ,.y RC F0Fm1366 m

[m\ LICENSEE EVENT REPORT

' 77) kJ (PLE ASE PRINT OR TYPE ALL REQUIRED INFORM CONTROL BLOCK: l l l l l l _lh 6 l j@ f t I

$ 7 C AT $8 o )1) [Il Ll Dl Rl Sl 3]@[ 0 l 0 } -l 0 l 0 l 0 l 0 l 0 l - l0 8 9 LtCENSEE CODE I4 15 LICENSE NUMSEH 25 26 LICENSE TYPE JO I

CON'T 0l510l0l0l2l419 @l0l8l2l4I7l8 @[75Oj,9__l0l8I7l8]@

68 69 EVENT DATE 74 REPORT DATE 80 5OuR$ 60 d l61 Olil _

DOCKET NUMBER

/ 8 h j o 2 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES This event was of _j 1D tive heat exchanger.

[ o t a l i the 3A Reactor Water Cleanup System regenera _j  !

significance because all leabge was contained within the Reactor

[OI ij i minimal safety _] f Events of this type have occurred before at Dresden. ,

O s l_ Building Floor Drain System. I l

0 6 L . __ __ _J .

l 10 l 71 l _

l 80 l O l8 l l su'sCEOE Su

1. "S

$$0E C0OE SOe#'

CODE COMPONENT CODE

$$e@

Zj l Cl Gj @ l E lh [Bj @ 13l H l T l E l X l CREPORT 18 29 l Hlh [X_j @ [20 REVISION

$ 9 10 it 12 SE OUENT1 AL OCCURR E NCE CODE TYPE N O.

7 8 REPORT NO.

!Ll [.-J l0 l M l 01 31 EVENT YE AR LE R /Ro RT l7l81 l-J l Ol 3l Sl26 27 28 29 30 3f 32 guNE 22 23 24 MAN FACTURER w 21 SUPP IE KN AC ON oP NT MET HOURS SB IT D LN_,j @

FO LtLJ@

5 8.

[Nj@ - lSI4l41sf@ 47

[2J@ l 01 Ol 01040l 44 Laj@L2j@ lzi@

Jb 36 3/

41 42 43 33 34 Ht. Exch. j CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O

[ Cause of leakage was a cracked weldfurther joining leakage. the Causeventof line j to Exch, was subsequently 'taken 0.0.S. to prevent j

' i lithe Ht. .-

Exch. connection was originally internally

Vent line to Ht.

gl weld failure unknown. t in i

welded.

Leak repaired by welding externally,a technique successful in pas lg ' j 80

! eliminating similar leaks.

FTT 1 I DISCOVERY OESCRIPTION j 7 8 9 O!S O RY

% POWER OTHER STATUS Operator Observation SA 5 j lAl@l_

! R (,E,,j@ l 0l 9 l 2 l@l NA _

LOCATION OF RELE ASE _j ACTIVITY CONTENT AMOUNT OF ACTIVITY NA 80 NA ) l 45 7

1 6 RELEASED @OF RELE ASE@{11 8 9 10 44

+

j PERSONNEL E XPOSURES NUMBE R TYPE NA l i l 7 l l 0 l 0 l 0 j@y@DESCRIPTtON [

i * *

PERSONNE L iN;u' RIES 2

J OESCRIP TION 80 NUVSEH NA

[TTrl 9101010 l@L 7 8 11 12 LOSS OF OR DAMAGE TOvFACILITY Q J29 TYPE DESCRIP TION NA i 9 [Zj@l NRC USE ONLY r u 9 10 PUBLICITY DESCRnPTION O

}

[4/ / j lIlllll1IIIIJ' 60+

NA ISSUE D 68 69 rrm 8LNJ81 9 to psong X-422 _

?

- Mehard Ps a lth