ML19319E589
| ML19319E589 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/18/1974 |
| From: | Phillips J, Rueter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E587 | List: |
| References | |
| NUDOCS 8004140566 | |
| Download: ML19319E589 (3) | |
Text
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Non-Routine, Non-Radiological Environmental Report No. 50-313/74-7 k
2.
Report Date:
12/18/74 3.
Occurrence Date: 12/10/74 4
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
Fish kill on intake screens exceeding 3000 pounds based on 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sample period.
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Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2560 MWth Hot Standby Net. Output 838 MWe i
Cold Shutdown Percent of Full Power 100 %
Refueling Shutdown Routine Startup Operation (Oj Routine Shutdown Operation
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Load Changes During Routine Power Operation Other (Specify)
X Four circulating water pumps were in operation.
Water temperature, as measured at the inlet to the condenser water box, was 44*F at 10:00 a.m.
and the ambient air temperature low for the morning was 20*F.
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Description of Occurrence:
During routine fish impingement monitoring 12/10/74, using procedure 1607.10, Monitoring Fish Impinged on ANO-1 Intake Screens, 3008 pounds of fish were 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 24-hour period beginning at 8:00 a.m.12/10/74, and ending at 8:00 a.m. 12/11/74, was 9024 pounds 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 gi::ard and threadfin shad made up 99.9% of the total weight of fish.
i Other fish made up.1% of the total weight. Threadfin shad 4
made up 98.5% of the total number of shad.
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8.00414054g July 3,.1974 NSP-10, nev. O Page 1 of 3
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Non-Routine, Non-Radiological Environmental R I
eport No. 50-31'3/74-7 e
8.
_ Designation of Apparent Cause of Occurrence:
Design Procedure Manufacture Unusual Service
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f Installation /
Condition Including _
Construction _
Envir' onmental Operator i.
Component Failure
.l Other (Specify) _
X during the winter season,The apparent cause was due to off of threadfin shad l
9 Analysis of Occurrence:
mentioned fish from the lake.The only noticeable Environ
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The fish that were collected weree re disposed of through land fill operation collected were disposed of through the trash dispoThe fish that sal system.
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t 10.
Corrective Action:
Long term studies are in progress to determin
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operation on the aquatic ecosystems of the Dardanelle the effects of p
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from this report and other data obtained is fed b 3
e Reservoir. Data to determine what changes might be made to i
ack into these studies that adequate data is obtained for evaluati the studies in order to ensure I
what corrective action'might be taken to reduAP6 I
ese studies will determine Reservoir.
ce plant effects on the
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W u-.m LW July S,1974
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NSP-l'D., Rev. O Page 2 of 3
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v don-Routine, Non-Radiological Environmental Report No. 50-313/74-7 11.
Failure Data:
The circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/74-1, through 50-313/74-6.
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12.
Reviews and Approvals:
Reviewed and Approved by:
Plant Safety Committee Yes (X)
No (
Plant Superintendent Yes (X)
No (
V Referencc:
JWA-729 Date: 12/16/7 Reviewed by:
y Date:
/
7 8r Licensing Supervisor
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Approved by:()///p k;.-od<[ Date: /)--W"7V i / %Ect 'Rev' Cgwaittec / /1fId/7 ' I Approved by: 'td dw we ~ t Date: -c .anagerofM1carServ[cc Approved by ' (( // ,If /m l[ ~ Date: /3~/[~~7(/ [ Director' of Power Production ~ Approved by: :- / Date: ) Seni'or Vice President i 1 i N.) i July 3, 1974 MSP-10, Rev. O Page 3 of~3 f y}}