ML19209C679

From kanterella
Revision as of 05:12, 2 February 2020 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
LER 79-049/03L-0:on 790924,loop Isolation Valve SI-617 Failed to Operate When Motor Operator Received Open Signal. Caused by Contact Misalignment of Movable Contactor. Contactor Realigned & Tested
ML19209C679
Person / Time
Site: Calvert Cliffs Constellation icon.png
Issue date: 10/12/1979
From: Bauer E, Lagiewski J
BALTIMORE GAS & ELECTRIC CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19209C674 List:
References
LER-79-049-03L, LER-79-49-3L, NUDOCS 7910170209
Download: ML19209C679 (1)


Text

(7 77)

= '

.- LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK: l 1

l l l l l lh 6

7 o 1 8 9 lM lDLICENSEE lC lCC30ElN l114 l@lO 15 lO l- lO LICENSE lO lONVM8ER lO lO l -l Ol 25O @l 26 4lLICENSE 1l ll TYPE 1l 1l@l JO l

57 CAT Sa I@

CON'T 7

0 1 8

"'bRCE O

60 IL h 61O l S lO lO lO I 3l 1l68 7 69@l Oi DOCKET NUMB ER 912 l 4l 7l EVENT DATg 74 975hl1 REPORT l Ol1l DATE 2l 7I809h EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h O 2 lDuring the perforTnance of surveillance testing at 0340, auxiliary hich oressure 1 0 3 l loop isolation valve (SI-617) failed to Cperate when its motor coerator received l o 4 lan Cpen signal. No other injection paths were incperable at the time. Tne valve 1 o is Iwas retumed to service at 0410 on 9/24/79. LER 76-48 (U-1) describes a similar l I

O e toccurrence.

O 7 l l

l o a i 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE C' COOE SUSCODE COMPONENT CODE SLBCOOE SUSCOOE

@ l Al@ lC K lT lB lR lK l@ l Bl@ ]@

7 o 9 8

lS 9 10

@ 11 ,12 13 18 19 20 SEQU E NTI AL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE NO, LE R tRO

@ aeg 17lo ,,,, 21 22 I-l 23 inl419 24 26 I/l 27 O is I 28 29 30 LI l-l 31 W32 TK N A ON O P NT ME HOURS S8 i POR B. SUP* LIE MANUFACTURER lE 33 l@lZl@34 lZi@

35 lZl@

36 l O 10 OlOl 37 40 lN @

41 lY @

42 l43A !@ 44 I10IOl5l@ 47 CAUSE DESCRIPTION eiND CORRECTIVE ACTIONS h i o lInvestication shcwed that the valve motor was Mnf = +=e47 4n + = m a- ad e m i i Idue to a slicht contact misalicment of the movable contactor. Tne contact was 1 i 2 Irealigned and tested. The state of electrical contacts is ceriodically surveyed I i 3 junder the preventive maintenance program.

4 l i l 80 7 8 9 ST  % POWER OTHER STATUS DISCO ' RY OISCOVERY OESCRIPTION i 5 l El@ l 1 l O l O l@l NA l lBl@l Surveillance Test l ACTIVITY CO TENT aftEASEO OPRELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 7

i 6 8 9 h 10 l

11 ER 44 l

45 IM 80 l

PERSONNEL EXPOSURES NUMBER TYPE D ESCRIPTION Im l i 7 10 l010 ]@lZ l@l *

,EaSO%E L iN;u2ES 11A0 n9 Nov8ea 1MU UL 7

i a 8 9 10 l O 10 l@sESCRiPriON@

11 l

12 In 90 LOSS OF CR OAMACE TO FACILITY TY'E D E SC RIPTION 1 9 l Z lhl10 IM 8 9 SO 7

@ 7 910170 cM NRC USE ONLY ,

2 o ,SSuEiSloESCaiPTiO~

LZ_ NA l llllll1lllll{

7 8 9 10 68 69 80 5 NAME OF PREPARER J. S. Laciewski/E. R. Bauer PHONEn(3Ol) 23407942/7917 2,