View source for 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

{{Adams
| number = ML20079M544
| issue date = 02/28/1983
| title = Telecopy Message of LER 83-012/01P-0:on 830222,both Reactor Trip Breakers Failed to Open.Cause Not Yet Determined. Investigation Underway
| author name = Midura H
| author affiliation = PUBLIC SERVICE ELECTRIC &amp; GAS CO. OF NEW JERSEY
| addressee name = Haynes R
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| docket = 05000272
| license number = 
| contact person = 
| document report number = LER-83-012-01P, LER-83-12-1P, NUDOCS 8303030060
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = Telecopy Message of LER 83-012/01P-0:on 830222,both Reactor Trip Breakers Failed to Open.Cause Not Yet Determined. Investigation Underway
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000272
| LER year = 2083
| LER number = 12
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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     ]:                                 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 hours, 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
                                                                                                                                                                                                                                 )
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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