ML19308D092

RO 77-59E:on 770609-10,fish Impingement on Intake Screens Exceeded Tech Specs Limits.Caused by Coal Barge in Canal & Dredge Performing Canal Maint

ML19308D092
Person / Time
Site:	Crystal River
Issue date:	07/01/1977
From:	FLORIDA POWER CORP.
To:
Shared Package
ML19308D089	List: ML19308D088 ML19308D092
References
NUDOCS 8002270588
Download: ML19308D092 (1)

Text

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ENVil'ONilhNTAl, I,1CENSEE EVENT REPORT 77-59E

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I. Facility: Crystal River Unit #3 ,

2. Report Date: 1 July 1977

3. Occurrence Date: June 9-10, 1977 -

4. tdcutification of Occurrence:

Blumass of finh azul shellfish impinged on t he intake screens of Units 1, 2 and 3 exceeded thu 50 kg/24hr reporting level of section 3.1.3 of the Environmental Technical Specifications.

5. Conditions Prior to Occurrence: .

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Unit #1 - All water circulation pumps operational. '

Unit #2 - One of four water circulation pumps non-operational (1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />).

Unit #3 - All water circulation pumps operational. .

6. Description of occurrence:

During the period 1000 June 9,1977 to 1000 June 10,1977 75.10 kg of fish and shellfish were impinged on the intake screens of Crystal River Units 1, 2 and 3. Of the 75.10 kg i impinged, Unit 3 ' account'ed for 18.14 kg (23% of total). One  !

commercially unimportant species, the batfish accounted for )

68.10 kg (86% of total). Two commercially utilized species, the pink shrimp and the blue crab accounted for 5.55 kg (7% of total). Impingement of all other commercially utilized species was less than L kg during the period in question. The )

remaining biomass impinged was distributed among several species -

of fish and shellfish.

7. Designation of Apparent Cause of Occurrence: ,

The following unusual or periodic events were noted prior to or during the ocourrence:

1. One coal barge left intake canal ~ at 0825 on 6/9/77.

2. A dredge performing canal maintenance entered the intake canal at 1430 on 6/9/77 and left at 2025 on 6/9/77.

These events may have been partially responsible for the impingement j observed.

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