ML19339C503

LER 80-060/03L-0:on 801009,while Performing Surveillance Test FNP-1-STP-28.1 (Diesel Generator 2C Operability Test), Capacity of Manually Controlling Diesel Generator Frequency Failed.Caused by Short Circuit in Voltage Regulator

ML19339C503
Person / Time
Site:	Farley
Issue date:	11/10/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19339C500	List: ML19339C499 ML19339C503
References
LER-80-060-03L, LER-80-60-3L, NUDOCS 8011180500
Download: ML19339C503 (1)

Text

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I nI , l- LICENSEE EVENT REPORT CONTRot sLOCx: l 1

l l l l I 6

l@ IPtuasa PRINT on TvPe aLL asOuenaO INPOnMATIOM 7

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• 8 9 lAlLlJlMlFl1l@l LICENSEE CCOE OI O l - l 0 l 0 LtCENSE 14 15 l 0 l 0NuueER l 0 l- l 0 l 0 l@26l425 l1 l1 TYPt LacENst l1 l1 30 l@l 57 CATS 8 l l@

CON'T l'o~ITl " "' l L6J l@l 0 3uc l 5 l 0QOCKETl 0 l NUMBER 0 l 3 l 4 l 868 l@l 1 1010 l9 l 8 l074l@l1 11REPOR11 T10 l8 IO80 l@

I 4 61 63 EVENT DATg 75 DATE

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EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h ITTTI l At 1410 on 10-9-80, while performina surveillance test FNP-1-STP-28.1 (Diesel Generatol

.ITITI l 2C Operability Test) the operator determined that he did not have the capability of l ITTT1 I manually controlling D/c frecuency. It was initially believed that the failure in theI manual circuit would not affect the auto cirettit. To confirm this initial conclusion.

I o I s l I a detailed review was initiated. At 2105 on 10-9-80 the regulator was repaired, the I fuses were replaced and the surveillance test was completed. At approximately this 0 6 l same time the detailed review was Concluded which revealed that the blown power supo1Vl fuses would also have affected.the auto voltage control. Therefore, the diesel would lolil l not have been able to maintain the' proper voltage under load. I LO 18.J l I SYSTEM CAUSE CAUSE COMP. VALVE CCOE CODE SUSCODE COMPONENT CODE SUSCCDE SUSCODE lOlsi I E l e l@ 12j@ lyJ@ l z i zl z l z l z l z l@ Lz_]@ Lzl @

8 3 10 Il 12 13 18 IS 2J

_ SEcutNTIAL OCCURRENCE REPORT REVISION IV ENT Y EAR R EPORT NO. CODE TYPE N O.

sgT 18 I ol

@ ;LER/Ro L-J l 01 61 01 Id 1013I I t. I l-l 10I 21 22 23 24 26 21 28 29 3J 31 32 KN AC 0 0 P NT ME HOURS SB t FOR B. SUPPLI MA FAC RER

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35 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ItIoIIThis event was caused by a short circuit in the voltane renulator which caused the l L'_LU l blown fuses in the 125 volt D.C. control oower sunolv. Personnel vill be -nam numre I L' L1j i of the symptoms of this failure so that its significance will be oromotiv recognized I

L'_L1j iand appropriate corrective action can be taken for future events of this nature. ,

I gi I 7 8 9 80 3T  % POWER oTHER STATUS IS O Y DISCOVERY DESCRIPTION i 5 LeJ@ l 1101 Ol@l NA l [Bj@l Performance of Surveillance Test l

' ' ' i2 n 44 es as so 48TiverY CO0 TENT RELEASE AMOUNT oF ACTIVITY LoCATtoN OP RELEASE m L7J @D oFRELEA$Elz,_l@l NA l l NA I 7 8 9 to Iq 44 45 80 PERSONNEL EXPOSURES NUVSER TYPE DESCRIPTION U_LJ I ol o l ol@LzJ@l' "

NA I PERSONNEamu' lies mum ER oESCRiPTioN@

7 t a 8 9 l 0l 010l@l12 13 NA l 80 LOSS OF OR DAMAGE To FACILITY TYPE DESCRt* TION 8 L.zJ 7 8 9

@l IO NA l 80 2 o ISSUE LN l @ DESCRIPTION NA l lllll1IIlllll} l r a9_ io g 9111 g 9 733 se e9 so ; -

NAME OP PREPARERW. G. HAIRSTON. III PHONE:(205) 899-5156 2