ML19257B264

LER 79-079/03L-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

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: ML19257B261 ML19257B264
References
LER-79-079-03L, LER-79-79-3L, NUDOCS 8001150434
Download: ML19257B264 (1)

Text

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 7 o i 8 9 lMIDlClClN 1l@l01Ol-lOlOl0101Ol-l010l@l41111Il11 LICENSEE CODE 14 15 uCENSE NUMBER 25 26 LICENSE TYPE Jo @l57 CATl 58 l@

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REPORT DATE 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o 2 l At 0830 on December 19, 1979, both spent fuel pool exhaust fans were i o 3 I taken out of service. A hiah differential pressure across the fans' filter I o .

l indicated a need for a ouchina filter chanae-out. The fans were olaced I o s i back into service at 1127 on December 19, 1979. No fuel movement occurred I o e I durino this period as recuired by T.S. 3.9.12. This is not a recetitive I o 7 occurrence. I O 8 l l

'O 7 8 9 E CODE SUSCO E COMPONENT CODE SUSC D'E SU E O 9 l Al A [@ l 0 l@ l Z l@ l Bl Lj 0l W[ Ej Rl@ l Zl@ l Zl@ 20 7 8 9 10 11 12 13 18 19 SEQUENTI AL OCCURRENCE REPORT REVISION LER REPORT NO. CODE TYPE No.

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_ 21 l 9l NT vE AR l-l 22 23 24 01 71 91 26 l/

27 10l3l 28 3 lL l 30 l-l 31 l0j 32 TAK N A ON ON PLANT M MOURS 27 S8 i D FOR 8. SUPPLIE MANUFA URER l33A lgl34 Gl@ lZ[@ lZ @ l0 l0 0 l0 l lN 41

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35 36 37 40 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o l The high differential pressure was caused by an excessive build up of dirt i U Li_j l on the filter mr 'ia. Maintenanca penepanro 1.19_M_M_1 hae hoen 4n4+4 3te a' l

, 2 I to inspect these filters on a monthly basis and replace them as necessary. i 1 3 l 1 4 1 7 8 9 80 ST  % POWER OTHER STATUS OS RY DISCOVERY DESCRIPTION i s lEl@ l0l 5l0l@l NA l l A l@l Operator Observation l A TlVITY CO TENT -

RECEASED OF RELEASE AMOUNT OF ACTIVITY L'OCATION OF RELEASE 1 6 LZj @ .l' Zl@l NA l NA PERSONNEt ExPOSSES NUMBER TYPE D ESCRIPTION NA l i 2 l O l 0 l 0 l@l Z l@l

' ' ' " 8 PERSONNE t iN;URiES i

NUM8ER =ESCR,PTio~8 NA 1749 293 l 7

x 8 9 l 010 l Ol@l12 11 80 LOSS OF OR DAMAGE TO FACILITY M3i

, , ]g["'"' ~ y, 8001150 j 7 8 9 10 80 2 o ,SSuEf@lcESCR' IN prion ya O l llll llltiIltl5 7 8 9 to 68 69 80 S NAME OF PREPARER R. P. Heibel/K. M. Romnev pycyg;(301)234-7943/7960