ML19308A496

Abnormal Occurrence 74-06:on 740603,leak Discovered in Socket Weld on Discharge Header of Reactor Coolant Sys Makeup Pumps.Pumps Stopped,Weld Isolated & Repaired & Plant Operations Resumed

ML19308A496
Person / Time
Site:	Three Mile Island
Issue date:	06/04/1974
From:	Herbein J METROPOLITAN EDISON CO.
To:
References
NUDOCS 7910250692
Download: ML19308A496 (1)

Text

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

O ~

.o ^ .

NEGGPOLtTAN EDiSO: 'KlMPANY msrourcrorctxems wununummunw , , L. . .

-,L Y

>ST OFF10E BOX 480 MIDDLETOWN. PENNSYLVANIA 17057 TE1.EPHONE717-944-4041 )

1

. hine 4,1974 l

ttr. J.P. O'9.eilly, fifrector -

Directorate of Reguiatory Operations .

Region 1 -

631 Park fettnue King of Prussia, Pa. 19406 i Operating t.ic1nse DPR-50 Docket 50-239

Subject:

Ahn: mal Occurrence Mo. AD 744^ , "'D 7 D c., 6 #

Dear Mr. O'Rel11y:

. q ,n T 1gnAl"La i This telegren is to conMrn a conversation between 1.. Spessard (Region I-GPG),

ar4 J.G. Eerbrin (T;U Strperintandent) at IS?DXts. 3 June 1974.

The folicwing report is subedtted in accordance with paragraph 6.7,2.a,2,4 ,.

(page 6-11) of the Technical Specifications.

/h 3 Jure M74 at 1810 HRS. a leak was discovered in 3 socket weld on the discharge header of the nattor cco3 ant systen make-up pu ps. The Tcaking tem Jcitit wts located in a 1" 304 stainless steel line which supplies make-up water to the core flood tanks.

At the tine the leek occurred the pricary system was at 3500F end ICO3 psig.

The seeendary sides of the orce through sinam generators were: isolated;.' . ~ """'

all reactor coolant pt:=s were stc;rped, the operating r.ake-up p::np was-stopped and the leaking veld was tv2tcted by valve closure. Tat leaking weid Joint was sutrsequently repsind usiny an appropriate weld pecedre and plant operations were rests::ed. .

Very truly yours,

Or  %,

3.G. Herbein >

. Q Station Superintendent f TNT tluclear Statfan- (Ui 9 V

men-

~

7910250h7Z f

.. . .. .. - .