ML19257B378

LER 79-077/03L-0:on 791213,control Room Air Conditioning Compressor 12 Tripped & Became Inoperable.Caused by Displacement of Crankcase Oil to Evaporator Coil Due to Operation at Low Ambient Temp.Oil Recovered

ML19257B378
Person / Time
Site:	Calvert Cliffs
Issue date:	01/10/1980
From:	Heibel R, Romney K BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19257B374	List: ML19257B373 ML19257B378
References
LER-79-077-03L, LER-79-77-3L, NUDOCS 8001150629
Download: ML19257B378 (1)

Text

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LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l Because of low oil oressure #12 Control Room air conditioning comoressor I o a i trioped and was out of service from 1515 on December 13, 1979, until I o 4 l 2000 on December 14, 1979. The air conditioning comoressor was repaired I o s I and the operable number returned to two as reauired by T. S. 3.7.6.1. A I o s l similar event was reported in LER 78-27. I oi? I I o 8 l  !

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,,,, SEQUENTI AL OCCURRENCE REPORT REVISION LER EVENT YEAR REPORT NO. CODE TYPE NO.

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33 34 35 36 37 40 41 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o l The compressor crankcase oil was displaced to the evaporator coil due to I i i  ! operation at low ambient temoerature. The oil was recovered and the unit ' I i 2 i restarted. An FCR lias been initiated to install a hot gas bypass valve to I i 3 I prevent this condition from recurrino. I 1 4 1 _

l 7 8 9 80 ST  % POWER OTHER STATUS OIS O RY DISCOVERY DESCRIPTION 1 5 l EJ@ l o I 51.0j@l NA I [H.,j@l Onerator Observation I A Tf VITY CO TENT AMOUNT OF ACTIVITN COCATION OF RELE ASE 1 6 l Zl RELEASE l

@D OF RELEASE.l NA Zl @l l NA l 7 8 9 10 ft 44 45 80 PERSONNEL Ex805URES NUHRE R TYPE DESCRIPTION i 7 l_,,0101Ol@fZl@l NA l PERSONNE L INJURIES

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TYPE O ESCRIPTION i 9 [.,,Zj@l NA l 7 8 9 to 80 CESCRIPTION

• I 2 o ISSNf@l l NA 9001150 V I I I I I ' I i 11I I i 15  !

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NAME OF PREPARER R

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PHONE;(301)234-7aa3 /7960 {