05000272/LER-1983-012, Telecopy Message of LER 83-012/01P-0:on 830222,both Reactor Trip Breakers Failed to Open.Cause Not Yet Determined. Investigation Underway

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Telecopy Message of LER 83-012/01P-0:on 830222,both Reactor Trip Breakers Failed to Open.Cause Not Yet Determined. Investigation Underway
ML20079M544
Person / Time
Site: Salem PSEG icon.png
Issue date: 02/28/1983
From: Midura H
Public Service Enterprise Group
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-83-012-01P, LER-83-12-1P, NUDOCS 8303030060
Download: ML20079M544 (1)
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LER-2083-012, Telecopy Message of LER 83-012/01P-0:on 830222,both Reactor Trip Breakers Failed to Open.Cause Not Yet Determined. Investigation Underway
Event date:
Report date:
2722083012R00 - NRC Website
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e i.,.Im L D 0.i i31L 4,u. Cortified By [ 2]

]: F(t% Se*v'c9 Elettdc aad Gas Comcany P.O. Box E Han::ocks B'idge. New Je sey 0B038 I Salem Generating Station February 28, 1983 i

s j

Mr. R. C. Haynes 58 W R Regional AdminiGtrator i USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 4

Dear Mr. Haynes I

REPORTABLE OCCURRENCE 83-012/OlP SALEM NO. 1 UNIT LER This letter is to confirm our verbal report to the NRC Headquarters on Sunday, February 27, 1983, advising of ,

a potential reportable occurrence in accordance with i Technical Specifications, Section 6.9.1.8.a.

t At 2036 hours0.0236 days <br />0.566 hours <br />0.00337 weeks <br />7.74698e-4 months <br />, February 22, 1983, during routine power operation, both Reactor Trip Breakers failed to open in l' response to a reactor trip signal caused by low-low water level in No. 13 Steam Generator. The trip had resulted from a loss of the IF Group Bus during transfer 1

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of the bus to the Auxiliary Power Transformer. i I l The reactor had been manually tripped immediately following the protective function. The immediate manual trip and  !

i focustrip both onbreakers other events at the had not opened. time obscured the fact that The problem was subse-quently discovered during investigation of a similar incident which occurred on February 25, 1983 (see LER 8 3-Oll/OlP) .

An invostigation is in progress, and a detailed report will

' be submitted within the 14 day time period as required by the Technical Specifications.

4 j Sincerely yours,

, y . g S ,g_g S303030060 030228 l DR ADOCK 05000 M. J. Midura kneral Manager -

Salem Operations t

4 RF:kls CC: Dis tribution The Ecerpv PecF.:-

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