ML20039A805

LER 81-037/03L-0:on 811119,control Element Assembly Pulse Counting Position Indicating Sys Became Inoperable.Caused by Blown Resistor in Regulator Card in Computer 36-volt Power Supply.Regulator Card Replaced

ML20039A805
Person / Time
Site:	Millstone
Issue date:	12/04/1981
From:	Resetar J NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20039A804	List: ML20039A803 ML20039A805
References
LER-81-037-03L, LER-81-37-3L, NUDOCS 8112210320
Download: ML20039A805 (1)

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7 60 61 DOC K E T N U".'isE R EVENT DESCRIPTLON AND PROSABLE CONSEQUENCES h I

W 2] l During Routine Power Operations, the CEA Pulse Counting Position I ndicating _

j gl System became inoperable. The facility operated in accordance with Technical

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g l Specifications. Action Statement 3.1.3.3.d for approximately 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. _

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42 43 l I l 0 l 1 l 0 lg 44 47 CAUSE DESCHIPTION AND CORRECTIVE ACTIONS g og l A blown resistor in the regulator card in the plant computer's 36 v power supply I g , ;i; l caused the loss of indication. The regulator card (IBM Part #374568) was 1 replaced and position indication restored. j MdI i

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