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 TEL.EPHONE GLEN ELLYN, ILLINOIS 60137 _______ (312).858-28&0- -*-- - ~ -

A. RO Inspect-ion Report No.

Transmittal Date Distribution: Distribution:

RO Chief, FS&EB RO Chief, FS&EB RO:HQ (5) RO:HQ (4)

DR Central Files L:D/D for Fuels & Materials Regulatory Standards (3) DR Central Files Licensing (13) .RO Files RO Files B. RO Inquiry Report No. - ~~~~~~~~~~~~~-

Transmittal Date Distribution: Distribution:

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

RO Files

c. Incident Notification From: Commonwealth Edison Co. Docket No. 50-249 (Licensee & Docket No. (or License No.)

Transmittal Date August 6, 1974 Distribution: Distribution:

RO Chief, FS&EB RO Chief, FS&EB RO:HQ (4) RO :HQ* (4)

Licensing (4) L:D/D for Fuels & Materials pR Central File§ DR Central Files RO Fil,es RO Files

. (

c*-.

____ _'.~. --~~--- _YEE4_62-' L8_3.5~).C y*.044299C20-7->-f!0--0'7-126/1-4--18-34 ------- - * - ---

c* ICS IPMVEID MV~

Q1 04277 TOVE MORR IS IL 9507@420P *.CDT .*'**

( PMS MR JAMES G KEPPLR REGIONAL DIRECTOR

• . . . TEL:E0ru.b1S (OTHER TH~N YONEY ~~S) .

DIR ECTOR ATE OF REGULA TORY. ~f~t~BELIVERY req1.rnsted? _ _ (YES-AGENT~~ADDRESS£E91 c::

REGION .3 WUX . ~~ Sl'.:CTION ADDfIB5~EE SECT,wN ebr. & NameJ-o"l ..3

. lt. lf/,2 . N~r.gc4.:: ~lo (o 0 c . ,__us ATOMIC ENERGY COMM!SSIO~'.itadld_

799 ROOSEVELT RD 11.x1. Tiir:edld IC'.~(s;{\ To -(fl:;

'.~l be -~iled or fihd ,r)"v\e'.:..; i)

B.1_.....,fu,....i_----*

GLEN ELLYN IL W tii5). .::~ta to deliver (Indio.ate DA or BY) ,

(

,; ~~--------;i.~r----------...._. ......_.;,___~~~I SUBJECT DPR-25 DRESDEN NUCLEAR POWER ~TATION UNION 3 THIS WILL CONFIRM A CONVERSTATION WITH F. ~AURA OF YOUR OFFICE THIS DATE CONCERNING THE FAILURE OF THE SEAT rATERIAL *

( sF.

1201 OF A~3-1601*22 AN AIR OPERATED PRIMARY CONTIN~ENT ISOLATION VALVE. THE OTHER VALVE IN LINE WITH THIS VALVE HAS BEEN PLACED

,,ti.6 lHE ISOLATED CONDITION IN ACCORDANCE WITH SEC.TION 3.7.D.2 C. .I

~

(_

[_..- **! v* ..*-, * '"; ('\

,:_,_b

• l._

OF THE TEC~NICAL SPECIFICATION. PREPARATIONS ARE_ NOW UNDER WAY TO c R~CONFIRM THE LE~K TIGHTNESS OF fHE OTHE~ VALUVES WHICH a PROVIDE THE PRESSURE BOUNDARY IN THIS LINE B B STPHENSON SUPERINTENDENT @I c

DRESDEN NUCLLEAR POWER STATION

(., COMMONWELATH EDISO~ CO RRl c MORR IS ILLINOIS a NNNN .. ~

c ~

c

.... *, .i' . ;J.,.,

c JUL 3 1 : 974 Ei1 ft

( ,-tt:

~

(*-

COi'1f~ 799 ROOSEVELT ;::rn c 'GLEN ELLYr~ IL 6013T SU3JECT DPR-2~ ~RESDEN. ~UCLEAR POWER STATION UN1T 3.

c THIS WILL CONFIJH-: *. ti" CP,,N.V.E..R~h:)),,ON,, WJJK:F:. MA . W..RA.,, O.f YO..UR OFFICE i.

AT 1445 HOURS 'THIS' DATE CONSERNING A FAILURE OF THE SEAT

r. MATERIAL OF AIR OPPERATED ISOLATIOi~ 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, 197~'1. A RE.~CTOR SHUTDOWN WAS COMMENCE:D AND THE REACTOR !1iAS IN COLD SYUTD~':.'N

• AT 0900 JULY,* 27., 1974.* 'AD.DITION.l\L DETAILS IN THE FORM OF A TEN

(_ SF-1201 (R5-69)

.. :-. *:*:::. *::::r.::*~::::*-::**-.::c: ..::.. - :*-:*::::=.-..:. . .. - -

( @I..

~ .

DAY LETTER ~ILL EE FORTHCOMING B E STEP4ENSON SUPERIN!E~DENT ..

DRESDEN NUCLEAR POWER STATION c COMMONWEATH EDISON COMPANY R R #l MORRIS ILL 60450

....... ~

(

c *.'

-~.

. .~;~.

JUL 3 1

~ SF-1201 (R5-69)