ML20084M514

Telecopy AO 3-72-8:on 721107,4,160-volt Switchgear Rooms Partially Flooded.Caused by Heavy Rains & Clogged Drains. Water Pumped Out & Drains Unclogged

ML20084M514
Person / Time
Site:	Turkey Point
Issue date:	11/08/1972
From:	Schmidt A FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20084M439	List: ML20084M451 ML20084M514 ML20084M517
References
AO-3-72-8, NUDOCS 8306020200
Download: ML20084M514 (2)

Text

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PMS DIRECTOR REGION 2 0 6 DIRECTORATE OF REGULATORY OPERATION US ATOMIC ENERGY COMM -k SUITE 218 230 PEACHTREE ST NORTHWEST ATLA O p FLORIDA POWER AND LIGHT C0 TURKEY POINT REPORTS T ABNORMAL OCCURRENCE #3-72-8 AT APPROXIMATELY NOON O OF NOV 7 1972 BOTH UNIT THREE 4160 VOLT SWITCH GEAR ROOMS WERE PARTIALL :s Y FLOODED DURING HEAVY RAINFALL BECAUSE OF CLOGGES O s[-

AND BACKED UP DRAINS THE UNIT WAS IN HOT SHUTDOWN ,-  ;

THROUGHOUT THE RAIN THE RAIN BEGAN AT ABOUT 1130 AM AND CEASED O Q AT ABOUT ONE OCLOCK PM 1.22 INCHES OF RAINFALL VAS RECORDED $

O THE WATER ENTERED THE SWITCH GEAR ROOMS THROUGH THE FLOOR DRAINS nFTER THE DRAIN HEADER CLOGGED DOWNSTREAM M (RM3) ]

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[ 8306020200 721128 s PDR ADOCK 05000250 T S PDR t 3 2e OF THE SLOPE IN THE FLOOR OF THE ROOMS THE WATER

-- ! VAS ABOUT FOUR INCHES DEEP AT THE NORTHSIDE OF THE ROOMS J WITH AN AVERAGE DEPTH THROUGHOUT THE ROOMS OF ON7 INCH THE 5!

SWITCHGEAR WAS NOT AFFECTED BY THE WATER.HOWEVER IF i-THE WATER HAD RISEN TO 6-8 INCHES TERMINAL BLOCKS AND RELAYS WOULD  %*.

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6 60 J O HAVE BEEN IN WATER THE WATER WAS PUMPED OUT AND TIE O DRAINS UNCLOGGED DESIGN CHANGE HAS BEEN INITIATED THAT WILL INSURE THAT FLOODING IN ONE ROOM VILL HAVE NO AFFECT O ON THE OTHER ROOM A D SCHMIDT DIRECTOR OF POWER RESOURCES FLORIDA POWER AND 0 LIGHT C0 TURKEY POINT PLANT MIAMI FLO O

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