ML20084P805

Telecopy of Ro:On 750330,during Refueling Outage Surveillance,Excessive Leakage Through Primary Containment Feedwater Isolation Check Valves 3-220-58B & 3-220-62B Observed.Caused by Failed Valve Disc Seal

ML20084P805
Person / Time
Site:	Dresden
Issue date:	06/02/1975
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8306130037
Download: ML20084P805 (1)

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VEE 050( 1005)(2-010694E 153) PD 06/02/75 1005 ICS IPMBNGZ CSP 8159424449 TDBN MORRIS IL 73 06-02 1005A EST PMS JAMES G KEPPLER, REGIONAL DIRECTOR DIRECTORATE OF REG ULATORY OPERATIONS REGION 3, WUX Oj\j.. b,J; US NUCLEAR REGULATORY COMMISSION 799 ROOSEVELT RD ' (f ) %B((

GLEN ELLYN IL 60137

SUBJECT:

DPR-25, DRESDEN N UCLE AR POWER ST AT ION, UNIT 3. 4'v -J y p THIS WILL CONFIRM A CONVERSATION WITH MR P JOHNSON OF YOUR OFFICE AT 1445 HOURS 5-30-75 CONCERNING EXCESSIVE LEAKAGE THROUGH PRIMARY CONTAINMENT FEED WATER ISOLATION CHECK VALVES 3-220-58B AND 3-220-62B DURING REFUELING OUTAGE SURVEILLANCE. LEAKAGE IS BELIEVED AT THIS TIME TO BE CAUSED BY FAILURE OF THE VALVE DISC SEAL. BOTH

$F 1201 (RM9)

V ALVES WILL BE INSPECTED AND REPA IRED DURING THIS OUT AGE.

B B STEPHENSON , SUPERINTENDENT DRESDEN NUCLE AR POWER ST ATION COMMONWEALTH EDISON COMPANY RR 1 MORRIS IL 60450 NNNN 3 /

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