ML19320A359
| ML19320A359 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/30/1974 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19320A348 | List: |
| References | |
| 50-313-74-11, NUDOCS 8005010856 | |
| Download: ML19320A359 (3) | |
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- 1..NON-ROUTINE, NON-RADIOLOGICAL ENVIRONMENTAL REPORT NO. 50-313/74-11 2.
Report Date: 12-30-74 3.
Occurrence Date: 12-18-74 4.
Facility: Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
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:
Steady-State Power Reactor Power MWth flot Standby Net. Output MWe Cold Shutdowr.
Percent of Full Power Refueling Shutdown Routine Startup Operation Routine Shutdown Operation Load Changes T.uring Routine Power Operation 100-8D-100 Other (Specify) 4 circulating water pumps were in operation.
Water temperature, as measured at the inlet to the. condenser water box, was 44F and the ambient air temperature was 27F at 8:00 a.m.
7.
Description of Occurrence:
During routine fish impingement monitoring 12-18 74 using procedure 1607.10, Monitoring Fish Impinged on ANO-1 Intake Screens. 310 lb. of fish were collected durins, 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 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 a.m. 12-18-74 and ending at 8:00 a.m.
12-19-74 was 6930 lb. based on the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sample.
A mixture of Gizard and Threadfin Shad made up 99.9% of the total weight. Other fish made up
.1% of the total weight of fish. Threadfin Shad made up 98% of the total number of shad.
July 3, 1974.
NSP-10, Rev. O Page 1 of 3
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50-313/74-11 NON-RGUTINE, NON-RADIOLOGICAL ENVIRONMENTAL REPORT NO.
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Designation'of Apparent Cause of Occurrence:
8.
Procedr.re Design' Unu,ual Service Manufacture Condition Including Environmental Installation /
Construction Component Failure Operator The apparent cause was due to a natural die off of Other (Specify)
Treadfin shad during the winter season.
9.- Analysis of Occurrence:
The only noticeable Environmental Impact was the removal o
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mentioned fish from the lake.
The fish that were not collected were of through land fill operation.
disposed of through the trash disposal system.
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10.
Corrective Action:
h ffects of plant
.Long term studies are in progress to determine t e e Data from operation on the aquatic ecosystems of the Dard determine what changes might be made to the studies in order to ensure Review by that adequate data is obtained for evaluating plant impact.
APGL and its consultants of the results of these studie ffects on the=
what corrective action might be taken to reduce plant e
-reservoir.
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it Page 2 of 3 NSP-l'0, Rev. O
- July S, 1974
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50-313/74-11 NON-ROUTINE, NON-RADIO *0GICAL ENVIRONMENTAL REPORT NO.
11.
Failure Date:
The circumstances of this report are similar to those reported in 50-313/74-1 Non-Routine, Non-Radiological Environmental Report Nos.
through 50-313/74-10.
i 12.
Reviews and Approvals:
Reviewed and Approved by:
Plant Safety Committee Yes (X)
No ( )
Plant Superintendent Yes (X)
No ( )
Reference:
JWA-756 Date: 12-26-74 Date: /2 Jd V
Reviewed by:
g Licensing Supervisor Date: // -W-2 V Approved by:
'[2// /[fj-)[g'
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'5a"fety lieview Committee Date: 12./3 a/7 4-Approved by:(A)$C4_ 'Q, '
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ager of Nuclear Sirvi [
Approved by: @ 27,f/ g Mf,f..M Date: /,P---4 -7/
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Director of Power Production Date:
/3/
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4 Approved by:
Senior Vice President t
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4 Pane 3 af 1 WN NSP-10, Rev. O
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13 CONTROL NO:
FILE:_ Enviro
~FROM; Arkansas Power (= Light Co.
DATE OF DOC DATE REC'D LTR TWX RPT OTHER Littic Rock, Ark 12-30-74 1-3-75 xxxx>
ORIG CC OTHER SENT AEC PDR xxxxxx J.D. Phillips SENT LOCAL POR _ xxmx TO:
1-signed 39 Mr. E. G. Case CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
40 50-313 xxxxxxx ENCLOSURES:
DESCRIPTION:
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Non-Rountine Environmental Report #74-11 on Ltr Trans the Eo11owing:
12-18-74 concerning fish kill intake screens
~~'"[M 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 />
,,__,-1' sample period........
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