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 o

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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 6l0