ML19270E910

LER 78-077/03L-0 on 781208:w/reactor in Run Mode,Dc Output Breaker of 2R44-S003 Tripped & Was Inoperable.Caused by Failure of Ac/Dc Protection Card A13A12.Card Replaced & Inverter Returned to Svc

ML19270E910
Person / Time
Site:	Hatch
Issue date:	12/22/1978
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19270E909	List: ML19270E908 ML19270E910
References
LER-78-077-03L, LER-78-77-3L, NUDOCS 7901030125
Download: ML19270E910 (1)

Text

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T21 lWith thn roactor in thn Pun ncd e . t he D. C . ru+ nut hecuar nf ?qu cnn3 (Statir I

3 I inverter for 2R24-501RP) trinced. Tha invertor beinr1 inrnorable is a violation of l

E LTechnical Specificatinn 3.8.2.1. Public health anri safety nor safe plant eneraticn I

E l were affected as the alternate suoniv f or 2R24-5018P, was oncrable.

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l e i EO SYSTEM CODE CAUSE COOE C AU*,E SUaCODE CO*.1POf4ENT CODE COMP.

SUBCODE VALVE SUCCODE lf 9 l r i n l@ LF_j@ l Gl @ l Gl Fl Ul El Rl A! @ W @ f.s is au Zl@ l{ ,

8 9 10 11 12 13 REFORT REV1510P4 SEQUE NTI AL OCCUT RE NCE REPORT NO. CODE TYPE NO.

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h ']3u@ 31 40 44 42 4.3 44 47 CAUSE DESCntPTION AND CORnECTIVE ACTIONS h i O l The D. C. output breaker trinned because the ' A13A12' ( A. C./ D. C. Protection) card , I

'm 1 yy l located in the inverter. f ailed. The ' A13A12' card was renlaced and the invorter I

1 7 l returned to service within the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> time period oiven in Technical Snecification I l g g l 3.8.2.1.a.

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c0 a9 I OTHf f1 STATUS 01 C iV DISCOVERY OESCRIPTIO'4 STA US N POWE R iM l lAl@l Qaerator Observation l s l Bl@ l Cl 6] 4l@l ACitVITY COP TENT LOCATION OF RELE ASE RE L E AirD OF FELE ASE AMOUNT OF ACTIVITY flA l i c lZl@ [Zj@l 10 NA 44 l l 45 193 8 9 11 PEft50t4NEL EXPOLUnt$

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