ML20010G782

LER 81-058/03L-0:on 810813,containment Radioactivity Monitoring Sys R11 & R12 Were de-energized.Caused by Failure of 600/208-volt Transformer.Transformer replaced.R11 & R12 re-energized

ML20010G782
Person / Time
Site:	Farley
Issue date:	09/09/1981
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010G766	List: ML20010G765 ML20010G774 ML20010G782 ML20010G788 ML20010G815 ML20010G824 ML20010G832
References
LER-81-058-03L, LER-81-58-3L, NUDOCS 8109220520
Download: ML20010G782 (1)

Text

~~'~

,, LICENSEE EVENT REPORT s

CCNTACL SLCCK: l 1

I  !  ! l  !

lh S

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) l 0 l 8l 9l l A UCENSEE 7 l 1. I CCOE J lM lF l1 hl5010 l-- LICENSE 14 1 l 010NLM8ER l 0 l 0 l 0 l- la5Ol 0l@lLICENSE 26 4l1 1l l@l l 1JO l 157l CAT TYPE 58 l@

['

7 4

$C"J 63l L'@l61O ! 5 lOOCKET 01010 NUM8Ea l314 136a@ 690 l a i 1l ;) 8l 11@[_0l 9l EVENT 04TE 74 75 0! 9l 8 l 1$3l@

REPCRT OATE EVENT CESCRIPTICN AND PROB ABLE CONSECUENCT' h lo42l [At 1138 on 8/13/81, the containment acmosphere radioactivity monitoring systems (R-11 and l i g i;; lR-12) were de-energized due to the failure of the 600/208 volt transformer (FD-J6) l 10 6 41 l which supplies the power to R11 and 'Il2. Tech. Spec. 3.4.6.1 requires R-11 and R-12 g

g ; 3, lto be operable. Tech. Spec. 3.4.6.1 action statement requirements were met. Health / g g g,,l ; safety of the public was not affected. ,

lo1711 _ i iosa!I I 7 5 3 30 SYSTEM CAeSE CAUSE COMP. VALVE COCE COCE SU8CCOE COMPONENT CODE SU8 CODE SU8CCOE loI9l l B l B l@ l E l@ l Al@ lT l Kl Al Nl S j F l@ l Zl@ l Z l@ ;0 7 8 9 10 il 12 13 18 19 SEQUENTI AL CCCURRENCE REPORT R EVISION LE A' AO [" EVENT YEAR R EPCRT NO. CCCE TY'E No.

O17a a g l811l l-l l 01518 l d 10l3l l Ll b l0l 21 22 23 24 26 27 79 ;9 30 31 37 g, q T KEN AC CN O PL t T ME WCURS SS : 80 B. SUP'Lik M T70 C RER

) 33l C l@l Cl@ lZl@ lZ l@ l 0 l0 l0 l0 l 2/ l41 Nl@ l N lg l43Al@ l S j '2 l 5 l 8 lg

.5 .6 40 42 44 47 CAUSE CESCRIPTION AND CCRRECTIVE ACTIONS 27 1 i j C l l This event was caused by the' failure of the motor control center power transformer 'that l liiij l supplies power to Rii and R12. The transformer was replaced and R-11 and R-12 were re- t

,,,7; } energized and returned to service at 1345 on 8-13-81. A design rec.uest has been initiatcd ,

, ;3; ;to evaluate the loading on this transformer.  ;

l i 6 41 I l 7 8 9 60 5 '6 POWER OTHER STATUS 01 RY' OISCOVERY DESCRIPTION l1 154 9l W@ l 0l 9 I 912l@l N/A l l A l@l Operator Observation l 7 11 44 45 46 80 TELEASED Op mELEASE AMOUNT CF ACTIVITY LCCATION CF RELEAS&

l l N/A l l1 168 l9l Z l @ 10l ZI@l?!N/A 7 44 45 80 PE ASONNEL EXPCSI/P ES NUMBER TS H CESCRIPTICN

[1 ( 71 ] 0 l 0 l 0 l@l Z l@l N/A l PE R S CNN E .'INJU RI E S NuveER CESCRIPTION N/A J 11 11 ) [ _0 l 0 l 0 l@]

7 3 11 12 to

/ LCSS OF CR CAMAGE TO PACILITY TYPE CESCRIPT:ON ft , s] W@l N/A l Pusub ^

pDRADOCK1092205:0 810909 NRC USS CNLY CESCRIPTION U,3

• iSSuEo N/A S 05000348 - .

12 l a l l N l@l PDR I 68 I I I I I I I I I I I I J30*4; 69 7 8 9 to NAME 0'3 P AEBMEg W. G. Hairston, III _ 'ggeyg. (205)899-5156 (