ML20040E651

Forwards LER 82-001/04T-0.Detailed Event Analysis Encl

ML20040E651
Person / Time
Site:	Millstone
Issue date:	01/29/1982
From:	Mroczka E NORTHEAST NUCLEAR ENERGY CO.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20040E652	List: ML20040E651 ML20040E665
References
MP-2-5043, NUDOCS 8202050211
Download: ML20040E651 (2)

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January 29, 1982 MP-2-5043

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qf Mr. Ronald C. Haynes [47 Regional Administrator, Region 1 x l' : C3p,qc '3 Office of Inspection and Enforcement -

U. S. Nuclear Regulatory Commission -fIES 4Jgg y O 4 -

631 Park Avenue King of Prussia, Pennsylvania 19406 aG1e x:'W2gu e.3,5[a" /

Reference:

Facility Operating License No. DPR-65 Q S Docket No. 50-336 os/x

/% qIlO' Reportable Occurrence R0-50-336/82-1/4T-0

Dear Mr. Haynes:

1his letter forwards Prompt Licensee Event Report 82-1/4T-0 required to be submitted within ten days pursuant to Millstone Unit 2 Appendix B Environmental Technical Specifications, Section 5.6.2.a (1), concerning an inoperable liquid radwaste discharge radiation monitoring recorder (ETS2.4.2.3.A).

An additional three copies of the report are enclosed.

Yours truly, NORTHEAST NUCLEAR ENERGY COMPANY E. . Mroczka Station Superintendent Millstone Nuclear Power Station EJM/JB:mo

Attachment:

LER R0-82-1/4T-0 cc: Director, Office of Inspection and Enforcement, Washington, D.C. (30)

Director, Office of Management Information and Program Control, Washington, D.C. (3)

U. S. Nuclear Regulatory Commission, c/o Document Management Branch, Washington, D.C. 20555 8202050211 820129 PDR ADOCK 05000336 4'3 S PDR

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ATTACHMENT TO LER 62-1/4T-0 Event Description and Probable Consequences With the plant shut down for refueling, a liquid radioactive waste dis-charge was made to Long Island Sound. Immediately af ter the discharge x.

was completed, it was realized that an I & C Technician had taken the radioactivity recorder out of service for calibration. No radiation monitor alarms were received during the discharge, indicating no station discharge limits were exceeded. Environmental Technical Specification section 2.4.1.3.c requires that the radioactivity of the wastes be recorded continuously. The event was reported as required by E.T.S.

section 5.6.2.a.(1) .

Cause and Corrective Action The radioactivity recorder was removed from service by a technician as part of a calibration procedure. He was not aware a discharge was in progress. A prerequisite of the calibration procedure is that a discharge is not in progress. The problem arose because the discharge was not in progress at the time the procedure was started. The technician left the control room prior to the start of the discharge, returned after the discharge was in progress, and then removed the recorder from service.

A sign has been attached to the recorder to state that the SS or SCO be contacted prior to removal of the recorder from service in order to verify that a discharge is not in progress. In addition the event has been reviewed with the personnel involved.

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