ML20084S556

Preliminary Ao:On 751109,traversing Incore Probe (TIP) Ball Valve 2 Failed to Close.Manual Attempts to Close Valve Failed.No Cause Stated.Addl Info Will Be Submitted in AO 50-265/75-45

ML20084S556
Person / Time
Site:	Quad Cities
Issue date:	11/19/1975
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NJK-75-583, NUDOCS 8306170108
Download: ML20084S556 (1)

Text

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"'A N C:mmt,nwealth Edison -

/<:"*h M Oua( jes Muclear Power Station Post Lee Box 21G p

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Os. .Cordova,1:hno6s 61242

". $ Tclephono 309/654-2241 fiJK-75-583 Telecopy: Region Ill, Attention: fir. C. Feierabend S . :N

c. bk ~i November 19, 1975 [ ,

vlNN'O u, y}

J. V,cppler, Regional Di rector \"A '

b ';I t -

Office of Inspection and Enforcement Region I l I M'u' ,'N ..,

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U.S. Nuclear Regulatory Commission M Q },,,' J '

799 Roosevelt Road ~~

l Glen Ellyn, Illinois 60137

!- Re fe rence: Quad-Citics Nuclear Power Station, Unit 2 f Docket No. 50-265, DPR-30 -

l Appendix A, Sections 1.0.A.2, 3 7 0.1, 6.6.D.I.a.

j

Dear fir. Keppler:

i The purpose of this letter is to provide you with notification of an Abnormal Occurrence as requi red by Techni cal Speci fica tion 6.6.B. I .a.

At 2:00AM on flovember 9,1975, with Unit 2 operating at 180 liWE, traversing 1 incore probe (TIP) ball valve number 2 failed to close following a complete TIP set.

Upon discovery of the occurrence, the key to the squib valve was issued to the uni t operator for fi ring the squib i f requi red for isolation. The operator tried to manually close the ball valve several times from the control room with-out success. Work request 4366-75 was issued to repair the valve. At 1:30PM on November 9, the ball valve was closed.

This occurrence was discus <,cd by telephone with Mr. Knop of your of fice on l tlovember 18, 1975 Further information will be provided by Abnormal Occurrence '

Report A0 50-265/75-45 which will be submitted within 10 days of the date of I

_ this occurren w. -

l Very truly yours, COMMONVEALTil EDISON COMPANY QUAD-CITIES flUCLEAR POWEP. STATION l [h N.J. Kalivianakis Station Superintendent f1JK/ilGL/vmb cc: Office of Nuclear Reactor Regulation G.A. Abrell ,

g 8306170108 751119 PDR ADOCK 05000265 S PDR

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