ML20010B863
| ML20010B863 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/05/1981 |
| From: | Abercrombie H TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEIN-80-45, RO-81-013-01P, RO-81-13-1P, NUDOCS 8108180401 | |
| Download: ML20010B863 (1) | |
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Emporead ander Teehaical Spcc1ficattous 6. 7.2.A (9)
I Date of occurressce 3/4/81 Times of occasrrences 12 :00 aux,aa unit O l
Technical Specificatiott Involved
- Techrnical Spec.if is at t.o.. Tamble 3.1. A.
.I Conditieme Prt,ny_tn Decarrremme nest e I npe.caesap,et 1,J71. Pose g unit 2 operattna at 1.100 mie s unit 3 overat;1ng at 110L Deta.
Identificatiott ausd Description af Oce-strrenge puring the evaluavian of Mac IE Inforunation Notice SMS, it was daeemrumis>=d tiset slie susde selector seritch on stvenam Ferry innlem
- 1., 2 and 3 had ette
- - deficiency istemmt. if ied in thee f ru frermetion not. ire = in that upon a loss o f poneer t o su RPS bus witta a subsequerst ressenrattoe of posee r. the mannual scr=== capabilit. ins of the umode selector eartech cau2A be Lost by a rapid entir r h i n g to the shetac=us ponieloe.
Appa r u-nt Caume o f Occurr--
A circuitry design deficiency metalch =Lil.szara re leys K-17 tes rem t = decuergized due to a relay race between relays K-16 and re.1aya E-17.
Ottner Related Events Mone s
_Co r rwe t Lw sac t isne Takew=_ne Pisumasar-d Operationne personsas.1 hawn haert inrarmed Etnat upon e lo== of pemer to the RPS ctreestevy fo11amed by reme.oratlon of power. if the mode me.le-ctor switch in turned to shutdoern, an der 11be.ra te pause of several escando er11.1. He unde tan either the startup or refuelista usede before going to the sh<stdown position.
Procedure retrielone wi.L1 be amade refleccism amonw approprjta ts act on ens the costa t tien is better ansiywed h
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