05000317/LER-1979-079-03, /03L-0:on 791219,high Differential Pressure Detected Across Filters of Fuel Pool Exhaust Fans.Caused by Excessive Buildup of Dirt on Filter Media.Maint Procedure 1-32-M-M-3 Initiated to Inspect Filters Monthly

/03L-0:on 791219,high Differential Pressure Detected Across Filters of Fuel Pool Exhaust Fans.Caused by Excessive Buildup of Dirt on Filter Media.Maint Procedure 1-32-M-M-3 Initiated to Inspect Filters Monthly

ML19257B264
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
ML19257B262	List: 05000317/LER-1979-079, Forwards LER 79-079/03L-0 05000317/LER-1979-079-03, /03L-0:on 791219,high Differential Pressure Detected Across Filters of Fuel Pool Exhaust Fans.Caused by Excessive Buildup of Dirt on Filter Media.Maint Procedure 1-32-M-M-3 Initiated to Inspect Filters Monthly
References
LER-79-079-03L, LER-79-79-3L, NUDOCS 8001150434
Download: ML19257B264 (1)

LER-1979-079, /03L-0:on 791219,high Differential Pressure Detected Across Filters of Fuel Pool Exhaust Fans.Caused by Excessive Buildup of Dirt on Filter Media.Maint Procedure 1-32-M-M-3 Initiated to Inspect Filters Monthly

Event date:
Report date:
3171979079R03 - NRC Website

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LICENSEE EVENT REPORT

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o

2 l At 0830 on December 19, 1979, both spent fuel pool exhaust fans were i

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I taken out of service. A hiah differential pressure across the fans' filter I

l indicated a need for a ouchina filter chanae-out. The fans were olaced I

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s i back into service at 1127 on December 19, 1979.

No fuel movement occurred I

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I durino this period as recuired by T.S. 3.9.12.

This is not a recetitive I

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occurrence.

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33 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l The high differential pressure was caused by an excessive build up of dirt i

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Maintenanca penepanro 1.19_M_M_1 hae hoen 4n4+4 3te 2 I to inspect these filters on a monthly basis and replace them as necessary.

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7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY 8001150 M3i

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8 9 to 68 69 80 S R. P. Heibel/K. M. Romnev pycyg;(301)234-7943/7960 NAME OF PREPARER