ML20010G684

Updated LER 80-048/01X-1:on 800903,control Room Air Conditioner 11 Compressor Tripped on Overload Following Start for Maint on Unit 12.Caused by Faulty Reset Switch on Overload for Unit 11 Compressor.Switch Replaced

ML20010G684
Person / Time
Site:	Calvert Cliffs
Issue date:	09/07/1981
From:	Lheureux R, Wenderlich R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010G680	List: ML20010G679 ML20010G684
References
LER-80-048-01X, LER-80-48-1X, NUDOCS 8109220407
Download: ML20010G684 (1)

Text

NRC FORT 9 366 U. S. NUCLEAR CE;ULATC7.Y COMMISSION (7 77)'

LICENSEE EVENT REPORT UPDATE REPORT PREVIOUS REPORT D' d 09-17-80 CONTROL BLOCK: l 1

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. (PLEASE PRINT CP TYPE ALL REQUtT.ED INFCRM ' #N)

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lo l 8i 9l l MLICENSEE 7 I o f CODE C l C I N l 1 l@15i LICENSE 14 0 I ONUMBERl - l 0 l 0 l 026 l 0 l 0LICENSE 26 l - l TYP0 l o l@l 4 b6l 1 l1 l1 l -

57 CAT q CON'T lolil 7 8

%" "C I60 L l@l 01510101013 61 DOCKET NUM'IER l 11768 l@l 69 01910 EY?NT CATE l318 l o l@L/ HE.

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DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lo121 L Durina normal operation. #12 Control Room Air Conditioner was stooned l l0 lal I for maintenance and #11 was started. Twelve minutes later it was dis- l 10141 l covered that the compres sy for #11 unit was not runnint. Two minutes 1 10151l later it was discovered that the compressor had tripped on overload. I 10 is l l The overload was re et at that time and the unit then started. Momen-  !

[o I7l l tarily, both units _liad been inoperable which is a violation of T.S. I 1018 I I 3.7.6.1. LER 80-38 describes a similar event. _ __ }

80 7 8 9 C DE CODE S BC E COMPONENT CODE SUBCODE SU DE

@ l S l G lh Wh l Alh l Cl Kl Tl Bl Rl Klh [E,jh d h 9 10 12 13 18 19 20 7 8 11 SEQUENTIAL OCCURRENCE REPORT REVISION EVENT YE A'1 REPORT NO. CODE TYPE N O.

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@ a=ER!RO 1 81 01 l23_] I 01 41 81 l.dj l011l Lx_] l-1 11I 26 27 28 29 30 31 32

. 21 22 24 N AC ON PL NT MET J HOURS SB IT FO 8. SUPPLIER MANUF CTURER l33A I@Lcl@34 l zl@

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CAUSE DESCRIPliON AND CORRECTIVE ACTIONS lilol L A faulty reset switch on the overload for #11 Air Conditioning com- l 1 i l pressor was found during investigation. The resei. switch was replaced. .

J i 7 l Plainc procedures have been revised to require an operability ched _j lil3l l of the idle Control Room Air Conditioner before securing the operating I I

gl unit.

80 7 8 9 ST S  % POWER OTHEa STATUS blS O RY DI'COVERY DESCRIPTION l ' ! 5 l (_E,jh l Il 0l Ol@l dA l l_A_j@l Operator Observation l ACTIVITY CC TENT RELEASED OF RELEASE AMOUNT OF ACTi\ ITY LOCATION OF RELE ASE i e NA l l NA l 7 8 9 LzJ @ L10zJ@l 11 44 45 80 PERSONNEL FXPoSURES NUMBER TYPE DESCRIPTION -

i 7 l010l0lhlZlhl NA l PE RSONNE L INJURIES 4 UMBER CESCRIP TION NA l ITT l8 10 7 9 l 010 l@l__11 12 80 LOSS OF OR DAMAGE To FACILITY h TYPE DESCRIPTION U M lp@l '

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' " ' 8109220407 810909 NRC L"sE ONLY 2 o gg3yg l @DESCRIPDON h NA PDR ADOCK 05000317 s PDK g l;;;;;;;;i;;lj 7 8 9 10 58 69 80 5 NAME OF PREPARER R. L. Wenderlich/R. W. L'Heureux pggyg @O E4WM {

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