ML20024A456

LER 83-020/03L-0:on 830420,high Steam Flow Bistable FC449A Setpoint Found Higher than Tech Spec Limit.Caused by Defective Internal Dc Power Supply Board.Board Replaced & Bistable Reset

ML20024A456
Person / Time
Site:	Indian Point
Issue date:	05/20/1983
From:	Mooney J, Otoole J CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To:	Allan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-83-020-03L, LER-83-20-3L, NUDOCS 8306170323
Download: ML20024A456 (2)

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LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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S 60 61 COCK ET NUY3ER EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h g l During normal operation while perfornung periodic " Surveillance Test" PIM-12, SG24 l l High Steam Flow S.I. bistable EC449A set point was found higher than the maximum setting l g limit permitted by Table 3.1 Item 5 of Tech. Spec. The effectiveness of the protection l

, system was preserved, as the requircrnents of Tech.' Spec. Table 3.3 Item le were met.  ;

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33 34 35 .o 3/ 40 41 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

] [The Foxbcro MMal 635 Bistable setooint drift was caused by a defective intornal d.c. I E 1 power supply board. The board was reolaced, the bistable reset and teseM carinfacenrilyl g gand was then returned to service. I yi I I

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. .0 STA  % POWER OTHER STATUS IS O Y DISCOVERY DESCRIPTION

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,e' John D. O'Toole

1. - V.ce PresaseTt Consolidated Edtson Company of New York, Inc.

4 trying Place, New York, NY 10003 Telephone (212) 460-2533 May 20, 1983 Re Indian Point Unit No. 2 Docket No. 50-247 LER-83-020/03L-0 Mr. James M. Allan, Acting Regional Administrator-Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pa. 19406 Dear Mr. Allan The attached Licensee Event Report LER-83-020/03L-0 is hereby submitted in accordance with the requirements of Technical Specification 6.9.1.7.

This event is of the type described in Technical Specification 6.9.1.7.2.b.

Three copies of this letter and attachment are enclosed as required.

Ver truly oups,

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Y attach.

cc: Mr. Richard DeYoung, Director (30 copies)

Office of Inspection and Enforcement c/o Distribution Services Branch, DDC, ADM U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. William G. Mcdonald, Director (3 copies)

Office of Management Information and Program Control c/o Distribution Services Branch, DDC, ADM U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. Thomas Foley, Senior Resident Inspector U. S. Nuclear Regulatory Commission P. O. Box 38 Buchanan, New York 10511 4 r\