ML19320A368

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Nonroutine Nonradiological Environ Rept 50-313/74-10:on 741217,fish Killed on Intake Screens Exceeded Tech Spec Limit for 8-h Sample Period.Caused by Natural Dying Off of Threadfin Shad During Winter Season
ML19320A368
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 12/30/1974
From: Cavanaugh W, Phillips J, Rueter D
ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19320A364 List:
References
50-313-74-10, NUDOCS 8005010868
Download: ML19320A368 (4)
v • d • e


Text

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50-313/74-10

1. NON-ROUTINE, NON-RADIOLOGICAL ENVIRONMENTAL REPORT NO.

12-30-74 3. Occurrence Date: 12-17-74

2. Report Date:
4. Facility: Arkansas Nuclear One-Unit 1 Russellville, Arkansas S. Identification of Occurrence:

Fish kill on the intake screens exceeding 3000 lb. based on an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sample period.

6 .- Conditions Prior to Occurrence:

FMth Reactor Power Steady-State Power Net. Output MWe Ilot Standby Percer.t of Full Power _%

Cold Shutdown

' Refueling Shutdown Routine Startup Operation Routine Shutdown ,

Operation ~'

80,-100 Load Changes During Routine Power Operation Other (Specify)- 4 circulating water pumps were in operation. Water temperature, as measured at the inlet to the condenser wa,ter box, was 44F and the anbient air temperafure was 32F at 8:00 a.m. '

7. Description of Occurrence:

12-17-74 using procedure 1607.10, During routine fish-impingevent monitoring

  • Monitoring Fish Impinged on'ANO-1 Intake Screens, 6129 lb. of fish weTe collected during an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sample period. The projected fish kill for the and ending at 8:00,a.m.

24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period beginning at 8:00 am 12-17-74

- 12-18-74 was 18,387 lb. based on the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sampic. A mixture of Gizard Other fish made up and Threadfin Shad made up 99.9% of the total weight.Threadfin Shad mad

.1% of the total weight of fish.

number of Shad.

3.

NSP-10, Rev. O Page 1 of 3 July _5, 1974

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- s AL REPORT NO, 50-313/74-10

-NON-ROUTINE, NON-RADIOLOGICAL ENVIRONMENT

8. - Designation of Apparent Cause of Occurrence:

Procedure Design _

Unusual Service

- Nbnufacture. Condition Including Environmental Installation /

Construction Component Failure Operator -

Other (Specify)

The apparent cause was due to a natural die off of Threadfin Shad during the winter season.

9. Analysis of Occurrence: b h

The only noticeable Environmental Impact was the removal of t e The fish that were collected were mentioned fish from the lake. The fish tnat were not disposed of through land fill operation. collected were disp Corrective Action:

~10. l t Long term studies are in progress to determine the effects i Data of p

  • operation on the aquatic ecosystems'of the Dardanelle Reservo from this report and other data obtained is i fed back.into in order to ensurethes to determine what changes might be made to the stud es Review by impact. l that adequate data 'is obtained for evaluating plantf these studies will determine ffects on the

, . APT,L and its consultants of the results owhat corrective 1

reservoir.

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a Page 2 of 3

-NSP-10, Rev. O July S, 1974_

e NON-ROUTINE, NON-RADIOLOGICAL ENVIRONMENTAL REPORT NO. 50-313/74-10

11. Failure Data:

The circumstances of this report are similar to those reported in

. Non-Routi.nc, Non-Radiological Environmental Report Nos. 50-313/74-1 through 50-313/74-9.

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12. Reviews and Approvals:

Reviewed and Approved by: Plant Safety Committee Yes (X ) No ( )

Plant Superintendent Yes (X ) No ( )

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Reference:

JWA-755 Date: 12/26/74

. Reviewed by: ', Date: /2!TO/ 79 Licerising Supervisor Approved by* l - ]QY/ yy Cs/ ( Date: /)2 -U ~ l V Safet[ReviewCommittee'

. Approved by:1, M,_ C_ _ _ _// ,/ _

Date: / 2 /Jo/7d__

' ) nager of Nuclear SeYv'ic [ A Approved by M///'gg // .,4,/ Date: -Y

/ Director 'of' Power Production

, Approved by:

//t . .<'

Date: / ' '. /

Senior Vice President  ;

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July 5, 1974 NSP-10, Rev. O Page 3 of 3 l

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AEC DISTRIBUT!C': FOR PART SO DOCKET t.1ATERI AL (TET.iPOR ARY FORi.1)

', CONTROL NO: 12 ENVIRO FILE:

F ROM: Arkansas Power & Light Co. DATE OF COC DATE REC'D LTR TWX RPT OTHER Little, Rock, Ark J.D. Phillips 12-30-74 1-3-75 xxxx ORIG CC OTHER SENT AEC PDR xxxxxx TO:

Mr. E.G. Case 1-signed 39 SENT LOCAL PDR CLASS UT! CLASS PROPINFO INPUT NO CYS REC'D DOCKET NO: .

xxxxxxx W 50-313 DESCRIPTION: ENCLOSURES:

Ltr trans the Following: Non-goutine Environmental Report #74-10 on 12-17-74 concerning fish kill on the intake

, ._.. , " T '-'~~ W s reens exceeding 3000 lb. based on an 8hr ji C.:._2 s , , . n 1)U L u sample peri od . . . . . . . .

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