ML19340A404

RO 77-95E:on 770728-29,impingement Sampling of Fish Discontinued Due to Excessive Seagrass Load.Caused by Large Influx of Seagrass & Algae That Clogged Intake Screens & Resulted in Removal of Collection Baskets

ML19340A404
Person / Time
Site:	Crystal River
Issue date:	08/18/1977
From:	FLORIDA POWER CORP.
To:
Shared Package
ML19340A403	List: ML19340A402 ML19340A404
References
NUDOCS 8003260718
Download: ML19340A404 (1)

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ENVIRONMENTAL LICENSEE EVENT REPORT 95E

1. Facility: Crystal River Unit #3

2. Report Date: August 18, 1977

3. Occurrence Date: July 28-29,1977 *

4. Identification of Occurrence:

Impingement sampling of fish and shellfish of Units 1, 2 and 3 was discontinued because of excessive seagrass load.

, 5. Conditions Prior to Occurrence:

Unit #1 - All water circulation pumps operational.

Unit #2 - All water circulation pumps operational.

. Unit #3 - All water circulation pumps operational.

6. Description of Occurrence:

During the period July 27, 1977 to July 31, 1977 an excessive amount of drifting seagrass and algae was impinging on and clogging the intake screens at the three units of the Crystal River site. This excessive and unusual influx of drift seagrass precluded sampling for impingement at the site. Sampling impingement during this period was not possible because plant -personnel were required to remove the sampling devices to clear the intake screens. Sampling was, of course, reinitiated during the week of August 1 - 7, 1977.

7. Designation of Apparent Cause of Occurrence:

< The cause of this event was the unusually large influx of drift sea-  ;

grass and algae which clogged the intake screens. The clogged intake screens, in turn, caused unusual plant operation of intake screens which necessitated removal of collection baskets.

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