ML20082K962

RO 83-039:on 831018,after Hays Gas Analyzer Removed from Svc to Perform Calibr,Waste Gas Sys Vent Header Not Sampled for 6.5 H.Cause & Corrective Action Will Be Described in Followup Rept

ML20082K962
Person / Time
Site:	Three Mile Island
Issue date:	10/19/1983
From:	Toole R GENERAL PUBLIC UTILITIES CORP.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
5211-83-310, RO-83-039, RO-83-39, NUDOCS 8312050363
Download: ML20082K962 (1)

Text

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O GPU Nuclear Corporation Nuclear

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s Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:

October 19, 1983 5211-83-310 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 83-039 This is to confirm the telephone notification to Mr. A. Fasano, TMI-II NRC Project Section Chief by Mr. M. A. Nelson at 1640 hours0.019 days <br />0.456 hours <br />0.00271 weeks <br />6.2402e-4 months <br /> on October 18, 1983.

At 0730 on 10/18/83 the Hays Gas Analyzer was removed from service to perform a required quarterly calibration.

The waste gas system vent header was not sampled for 6.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> which violates the 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> time limit of Technical Speci-I fication 3.21.2.

This event is considered prompt reportable under Technical Specification 6.9.2.A.2.

Although reportable, there was no threat to the health and safety of the public since hydrogen concentration in the vent header was monitored with f

a redundant monitor and did not exceed 0.57..

With this low level of hydrogen, potentially high oxygen concentrations do not present a safety hazard.

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

Sin erely, 0312050363 831019 PDR ADOCK 05000289 S

PDR R.

I. Toole Ope tions & Maintenance Director, TMI-l RJT: MAN:vj f cc:

R. Conte GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation h

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