ML20086D367

Telecopy AO 75-014:on 750725,head Gasket on Gland Seal Exhaust Condenser Failed.Replacement of Failed Gasket Initiated Immediately.Condenser Repaired & HPCI Sys Tested & Verified Operable

ML20086D367
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/25/1975
From:	Riley B VERMONT YANKEE NUCLEAR POWER CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086D361	List: ML20086D367
References
AO-75-014, AO-75-14, VYV-3942, NUDOCS 8312010198
Download: ML20086D367 (1)

Text

_

9 O9 OY .

I VERMONT YANKEE NUCLEAR POWER CORPORATION ScVCNTY ScVcN OROVc GTHecT

. Ru rr.mn, Vendrowr 03701 VYV-3942 "*?

P.O.DOX 157 VcHNON. VenMONT o3334 July'25, 1975

' -; ~.~

United States Nuclear Regulatory Commission M\yCl[f{g\

3 Office of Inspection and Enforcement sf ,

Region 1 \

41 d 'h $;4 [Mi, ,

631 Park Avenue i' King of Prussia, Pennsylvania 19406 J r y, i

, ';;*a J' ,

%.

• n '.y.,  ;;

ATTENTION: James P. O'Reilly, Director (, ,

'( -\

REFERENCE:

Operating Licence DPR-28 s Docket No. 50-271 N Abnormal Occurrence No. A0-75-14 (24 llour Report)

Dear Sir:

As defined by Technical Specifications for the Vermont Yankee Nuclear Power Station, Section 6.7, we are reporting the following Abnormal Occurrence as A0-75-14 and confirming our conversation with lir. D. Sternberg of your office, who was present at the time.

At 1020 on July 25, 1975, while performing the monthly liigh Pressure Coolant Injection (IIPCI) System pump operability surveillance test, the head gasket on the gland seal exhaust condenser fallec}. This condenser iu t ey ulfwl lor proper operation of the llPC1 System and its loss precludes the HPCI operability required by Section ').5.E.1.a of the Technical Specifications. The reactor was operating at approximately 80% power at the time of this incident.

Replacement of the failed gasket was initiated immediately.

Concurrently, the operability verification required by Section 4.5.E.2 of Technical Specifications was begun.

The condenser was repaired and the llPCI System was tested and -

verified operabic at 1326 on July 25, 1975. -

Very truly yours, 8322010198 750806 PDR ADOCK 05000271 -Q* .

S ppq y Bradford U. Riley Plant Superintendent gj RWB/kbd 4