ML17252A957

Letter Confirming a 07/31/1973 Conversation Concerning Fast Closure Time on 1B Main Steam Isolation Valve

ML17252A957
Person / Time
Site:	Dresden
Issue date:	08/06/1973
From:	Worden W Commonwealth Edison Co
To:	Boyce B US Atomic Energy Commission (AEC)
References
Download: ML17252A957 (2)

Text

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' I UNITED STATES ATOMIC ENERGY COMMISSION DIVISION OF COMPLIANCE REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOIS 60137 TELEPHONE (312) 858-2660 A. - RO Inspection Report No.

B.

c.

Transmittal Date Distribution:

• .RO Chief, FS&EB RO:HQ (5)

DR Central Files Regulatory Standards (3)

Licensing (13)

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RO Inquiry Report No.

Transmittal Date Distribution:

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

DR Centra 1 Files Regulatory Standards (3)

Licensing (13)

Incident Notification From:

Transmittal Date Distribution:

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

Licensing (4)

DR Central Files RO Files Distribution:

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

L:D/D for Fuel & Materials DR Central Files Distribution:

RO Chief, FS&EB RO:HQ DR Central Files Commonwealth Edison Co.

DPR-25 (Licensee & Docket No. (or License No.)

August 6, 1973 Distribution:

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

L:D/D for Fuel & Materials DR Central Files

'v' BNDt06CU.l04)Cl*C07727C212>PD 07/31/73 1002

. ICS IPMVEIC MVN 03038 (03228) TOVE MORRIS ILL 93 07*30 33eJP CDT FON 3128582660 BOYCE BRIER DIRECTOR DIV OF COMPLIANCE REGION E US ATOM~C ENERGY. COrll1ISSION 799 ROOSEVELT RD GLEN ELLYN IL 6 Ol 37.

SUBJECT OPR..;25 DRESDEN NUCLEAR POWER STAT'ION UNIT 3.

THIS WILL CONFIRM.A CONVERSATION WITH MR F MAURA OF YOUR OFFICE AT 1030 HOURS THlS PATE CONCERNING FAST CLOSURE TIME ON IB MAIN STEAM ISOLATION VALUEo ON 7 /29/73 DUR! NG A UNIT STAT UP 18 MSIV WAS TIMED AND FOUND TO HAVE A CLOSURE TIME OF 206 SECONDSo CABLE 3.7.l OF TECHNICAL SPECIFICATIONS REQUIRES A CLOSURE TIME OF BE..

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BETivEEN 3 AND 5 SECONDS UNTIL PROBLEMS CAN BE CORRECTED 9 MSI VS 1 B AND 2 B WILL REMAIN CLOSED w p WARDEN SUPERINTENDENT DRESDEN NUCLE.An PO\\vERSTATION

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