ML20085K259

Telecopy Ro:On 730729,during Unit Startup,Msiv 1B Found to Have Closure Time Above Tech Spec Limit.Cause Not Stated. MSIVs Will Remain Closed Pending Evaluation

ML20085K259
Person / Time
Site:	Dresden
Issue date:	07/31/1973
From:	Worden W COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085K261	List: ML20085K259 ML20085K264
References
NUDOCS 8310200367
Download: ML20085K259 (2)

Text

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Telegram  !

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-- BND106(1H04)(1-007727C212)PD 07/31/73 1002 I l ICS IPMVEIC MVN  ;

03038 (03228) TDVE MORRIS ILL 93 07-30 330P CDT FON 3128582660  !

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BOYCE BRIER DIFECTOR DI\ OF COMPLIANCE REGION E US ATodIC ENEFCY COMMISSION 799 ROOSEVELT RD GLEN ELLYN IL 6 037 l

SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3.

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THIS WILL CONFIRM A CONVERSATION WITH MR F MAURA 0F YOUR OFFICE AT 1930 HOURS THIS DATE CONCERNING FAST CLOSURE TIME ON IB MAIN STEAM ISOLATION VALUE. ON 7/29/73 DURING A UNIT STAT UP IB MSIV WAS TIMED AND FOUND TO HAVE A CLOSURE TIME OF 2.6 SECONDS.

CABLE 3.7.1 0F TECHNICAL SPECIFICATIONS REQUIRES A C10SURE TI ME OF BE.

T-SF.1201 (RS49)

, BETWEEN 3 AND 5 SECONDS UNTIL PROBLEMS CAN BE CORRECTED, MSIVS 1 B AND 2 B WILL REMAIN CLOSED W P WARDEN SUPERINTENDENT DRESDEN NUCLEAR POWER 3TATION 8310200367 730731 PDR ADOCK 05000 S

SF 12C1 (RS491

9 o -#26

[ 'g UNITED STATES -

.- ATOMIC ENERGY COMMISSION ) ',

L. Q. L

. I DIVISION OF COMPLE ANCE REGION lll 799 ROOSEVELT ROAD GLEN ELLYN. lLLINols 60137 (3:23 ass-2sso A. RO Inspection Report No.

Transmittal Date  :

Distribution: Distribution:

RO Chief, FS&EB RO Chief, FS&EB 7 0Tli G 5)~

RO:HQ (4) -

DR Central Files L:D/D for Fuel & FMterials Regulatory Standards (3) DR Central Files Licensing (13)

B. RO Inquiry Report No.

Transmit.tal Date  :

I I

Distribution: Distribution:

RO Chie f, FS&EB RO Chief, FS&EB RO:HQ (5) RO: liq DR Central Files DR Central Files Regulatory Standards (3)

Licensing (13)

C. Incident Notification From: Cor:=onwealth Edison Co. DPR-25 (Licensee & Docket No. (or License No.)

Transmittal Date  : August 6,1973 Distribution: Distribution:

R0 Chieh FS&EB RO Chie f, FS&EB RO:HQ (4) RO:HQ (4)

Licensing (4) L:D/D for Fuel & Materials DR Central Files DR Central Files RO Files