05000317/LER-1980-048-01, 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

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:
References
LER-80-048-01X, LER-80-48-1X, NUDOCS 8109220407
Download: ML20010G684 (1)

LER-1980-048, 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

Event date:
Report date:
3171980048R01 - NRC Website

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 l

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. (PLEASE PRINT CP TYPE ALL REQUtT.ED INFCRM '

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7 8 9 LICENSEE CODE 14 LICENSE NUMBER 26 26 LICENSE TYP 57 CAT b6 q

CON'T lolil

%" "C I L l@l 01510101013 l 117 l@l 01910 l318 l o l@L/ 91 01 vi al il@

7 8

60 61 DOCKET NUM'IER 68 69 EY?NT CATE 74 7'

HE. PORT DATE 8"

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.

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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 7

8 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION L

EVENT YE A'1 REPORT NO.

CODE TYPE N O.

@ a=ER!RO 1 81 01 l _]

I 01 41 81 l.dj l011l Lx_]

l-1 11I

. 21 22 23 24 26 27 28 29 30 31 32 N AC ON PL NT MET J

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40 41 42 43 A4 47 CAUSE DESCRIPliON AND CORRECTIVE ACTIONS lilol L A faulty reset switch on the overload for #11 Air Conditioning com-l 1

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pressor was found during investigation. The resei. switch was replaced.

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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 dA l

l_A_j@l Operator Observation l

l ' ! 5 l (_E,jh l Il 0l Ol@l ACTIVITY CC TENT RELEASED OF RELEASE AMOUNT OF ACTi\\ ITY LOCATION OF RELE ASE l

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l NA LzJ @ L zJ@l i e 7

8 9 10 11 44 45 80 PERSONNEL FXPoSURES NUMBER TYPE DESCRIPTION -

l l010l0lhlZlhl NA i 7 PE RSONNE L INJURIES 4 UMBER CESCRIP TION l

ITT l 10 l 010 l@l__

NA 80 7

8 9 11 12 LOSS OF OR DAMAGE To FACILITY h TYPE

DESCRIPTION

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M lp@l NA 80 8109220407 810909 h

PDR ADOCK 05000317 NRC L"sE ONLY gg3yg @DESCRIPDON g

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PDK 2 o 58 69 80 5 7

8 9 10 R. L. Wenderlich/R. W. L'Heureux

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