ML19308D336

RO 77-69E:on 770630-0701,fish Impingement on Intake Screens Exceeded Tech Specs Levels.Caused by Dredge Performing Canal Maint

ML19308D336
Person / Time
Site:	Crystal River
Issue date:	07/19/1977
From:	FLORIDA POWER CORP.
To:
Shared Package
ML19308D333	List: ML19308D332 ML19308D336
References
NUDOCS 8002270791
Download: ML19308D336 (1)

Text

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ENVIRONMENTAL LICENSEE IVENT REPORT ~77-69E J

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1. Facility: Crystal River Unit #3 5

2. Report Date: 19 July 1977 .  !

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3. Occurrence Da,te: June 30, 1977 to July 1, 1977 -

4. , Identifict >. ion of Occurrence

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i Biomass of fish and shellfish impinged on the intake screens of

Units 1, 2 and 3 exceeded the 50 kg/24hr reporting level of section 3.1.3 of the Environnental Technical Specifications.

5. Conditions Prior to Occurrence:

Unit #1 - All water circulation pumps operational. -

Unit #2 'All water circulation pumps operational. .

Unit #3 - One of four water circulation pumps was non-operational from 0125-0612 on 7/1/77.

6. Description of Occurrence:

.During the period 1000 June 30,1977 to 1000 July 1,1977 88.2.1 kg of fish and shellfish were impinged on the intake screens of Crystal River Units 1, 2 and 3. Of the 88.21 kg impinged, Unit 3 accounted for 42.54 kg (48% of total). Jne comercially unimportant species, the batfish accounted for 71.79 kg (81% of total).. One comercially utilized species, the blue crab accounted for 9.22 kg (10% of total). The

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remaining biomass impinged was distributed among several species of fish and shellfish. '

7. Designation of Apparent Cause.of Occurrence: .

The following unusual or periodic event was noted during the occurrence:. .

A dredge perfoming canal maintenance entered and exited the

{ intake canal on June 30, 1977. -

, This event may.have been partially responsible for the impinge-g ment observed.

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