ML17252A508

Letter Confirming a 07/26/1974 Conversation Concerning Failure of the Seat Material of the Air Operated Primary Containment Isolation Valve A03-1601-22 - Dresden Unit 3

ML17252A508
Person / Time
Site:	Dresden
Issue date:	08/06/1974
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler US Atomic Energy Commission (AEC)
References
Download: ML17252A508 (3)

Text

UNITED STATES ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOIS 60137 ------------* ----*--TEL.EPHONE

_______ (312).858-28&0-

-*----A. RO Inspect-ion Report No. Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) RO Files Distribution:

RO Chief, FS&EB RO:HQ (4) L:D/D for Fuels & Materials DR Central Files .RO Files B. RO Inquiry Report No. -

c. Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) RO Files Incident Notification From: Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (4) Licensing (4) pR Central File§ RO Fil,es Distribution:

RO Chief, FS&EB RO:HQ DR Central Files RO Files Commonwealth Edison Co. Docket No. 50-249 (Licensee

& Docket No. (or License No.) August 6, 1974 Distribution:

RO Chief, FS&EB RO :HQ* (4) L:D/D for Fuels & Materials DR Central Files RO Files . (

c*-. ____

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* ------* c* ICS IPMVEID 04277 TOVE MORR IS IL 9507@420P

• .CDT PMS MR JAMES G KEPPLR Q1 ( c:: c ( '** .*

• REGIONAL DIRECTOR * * . . . TEL:E0ru.b1S (OTHER YONEY . DIR ECTOR A TE OF REGULA TORY.

req1.rnsted?

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REGION .3 WUX . Sl'.:CTION SECT,wN ebr. & NameJ-o"l . lt . ..3 lf/,2 .

4.:: (o 0 . ,__us ATOMIC ENERGY 11.x1. Tiir:edld To -(fl:; B.1_.....,fu,....i_----*

799 ROOSEVELT RD be or fihd ,r)"v\e'.:..;

i) GLEN ELLYN IL W tii5).

to deliver (Indio.ate DA or BY) , ,;

...... _.;,_ __

SUBJECT DPR-25 DRESDEN NUCLEAR POWER UNION 3 THIS WILL CONFIRM A CONVERSTATION WITH F.

OF YOUR OFFICE THIS DATE CONCERNING THE FAILURE OF THE SEAT rATERIAL OF AN AIR OPERATED PRIMARY ISOLATION VALVE. THE OTHER VALVE IN LINE WITH THIS VALVE HAS BEEN PLACED * * ( sF.1201 ,,ti.6 lHE ISOLATED CONDITION IN ACCORDANCE WITH SEC.TION 3.7.D.2 ****---*-*, C. .. (_ .... , .. ,. l._ c c (., c c c -.. **. [-.... *-_.. ! .. , * '"; ('\ ** v* ,:_,_b OF THE SPECIFICATION.

PREPARATIONS ARE_ NOW UNDER WAY TO THE TIGHTNESS OF fHE VALUVES WHICH PROVIDE THE PRESSURE BOUNDARY IN THIS LINE B B STPHENSON SUPERINTENDENT DRESDEN NUCLLEAR POWER STATION COMMONWELATH CO RRl MORR IS ILLINOIS NNNN JUL 3 1 : 974 . . .... *, ... ---*-.I *

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• a c .i' . ;J. ,., Ei1 ft

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799 ROOSEVELT

rn 'GLEN IL 6013T SU3JECT POWER STATION UN1T 3. THIS WILL CONFIJH-

• . ti" WJJK:F:. MA .. W..RA.,, O.f YO..UR OFFICE AT 1445 HOURS 'THIS' DATE CONSERNING A FAILURE OF THE SEAT .; r. MATERIAL OF AIR OPPERATED VALVE A0-3-1601-21.

THIS --VAL VE: *WHICH IS VJ SERIES WITH THE PREVIOUSLY REPORTED A0-3-160122 VALVE WAS DISCOVERED TO HAVE SEAT DEGREDATION BY , i *-L 0 CAL LEAK RATE TESTING AT 2300 '-!OURS JULY 26, A

• .. SHUTDOWN WAS COMMENCE:D AND THE REACTOR !1iAS IN COLD

• AT 0900 JULY,* 27., 1974 .* 'AD.DITION.l\L DETAILS IN THE FORM OF A TEN (_ SF-1201 (R5-69) ( c ( c .. :-. *:*:::.

.. :: .. -:*-:*::::=.-

.. :. . .. --....... DAY LETTER EE FORTHCOMING B E STEP4ENSON DRESDEN NUCLEAR POWER STATION COMMONWEATH EDISON COMPANY R R #l MORRIS ILL 60450 *.' JUL 3 1 SF-1201 (R5-69) .. .. -..: ' ....... ,-tt: @I.. .. ..... .