ML20080T033

RO 83-25:on 830916,containment Isolation Valve Found Open While Containment Integrity Required.No Threat to Health & Safety Since Second Boundary Remained Closed.Cause & Corrective Actions Expected in 14-day Followup Rept

ML20080T033
Person / Time
Site:	Three Mile Island
Issue date:	09/19/1983
From:	Toole R GENERAL PUBLIC UTILITIES CORP.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
5211-83-266, RO-83-25, NUDOCS 8310200008
Download: ML20080T033 (1)

Text

GPU Nuclear g g{ P.O. Box 480 Middletown, Pennsylvania 17057 717-944-7621 Writer's Direct Dial Number:

September 19, 1983 File: Licensee Event Reports 5211-83-266 Dr. Thomas E. Murley Region I, Regional Administrator U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Sir:

Three Mile Island Nuclear Station, Unit 1 (TMI-1)

Operating License No. DPR-50 Docket No. 50-289 LER 83-25 This is to confirm the telephone notification to Mr. F. Young, NRC Resident Inspector by Mr. M. A. Nelson at 1810 hrs. on September 16, 1983.

A containment isolation valve (CIV) was found open while containment integrity was required. The CIV (FS-V-405) is a 3/4" vent / test connection for the fire service supply to the Reactor Building. This event is considered reportable under section 6.9.2.a.2 of the Unit I Technical Specifications.

Although reportable, there was no threat to the health and safety of the public since the second boundary, FS-V-401 remained closed.

Investigation of the cause for this incident and the corrective actions to prevent recurrence will be described in the 14 day followup report.

Sincerely, wm R. . Toole 0perations and Maintenance Director, TMI-1 RJT:HBS:j rg cc: R. Conte CARIRS 8310200000 830919 PDR ADOCK 05000289 %q S PDR GPU Nuclear is a part of the General Pubhc Utikties System