ML19319E598
| ML19319E598 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/11/1974 |
| From: | Rueter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E595 | List: |
| References | |
| NUDOCS 8004140601 | |
| Download: ML19319E598 (3) | |
Text
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Non-Routine, Non-Radiological Environmental Report No.
50-313/74-6 1.
3.
Occurrence Date:
12/5/74 2.
Report Date:
12/11/74 4.
Facility:
Arkansas Nuclear One-Unit 1 i
Russellville, Arkansas l
l.
5.
Identification of Occurrence:
Fish kill on Intake Screens exceeding 3000 pounds based on une 8-hour sample period.
i Conditions Prior to Occurrence:.
6.
j Reactor Power 2163 FMth Steady-State Power X
Net. Output 712 FMe Hot Standby Percent of Full Power 84 Cold Shutdown Refueling Shutdown Routine Startup Operation I
Routine Shutdown i
)
Operation Load Changes During Routine Power Operation 4 circulating water pumps were in operation.
i Other (Specify)
I 7.
Description of Occurrence:
During routine fish impingement raonitoring 12/5/74, using procedure 1607.10 (Monitoring Fish Impinged on ANO Intake Screens),1790 pounds i
The proj ected. l of fish were collected during an 8-hour sample period.
fish kill for the 24-hour period beginning at 8:00 a.m.12/5/74 andA 12/6/74 was. 5370 based on the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> sample.
l mixture of gizzard and threadfin shad made up 99.9% of the total weight ending at 8:00 a.m.
Threadfin shad Other fish made up.1% of the total weight.
of fish.
made up 95% of the total number of shad.
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8 0 0 4140 ffq O
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i x
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v i
l Non-Routine, Non-Radiological Environmental Report No. 50-313/74-6 8.
Designation of Apparent Cause if Occurrence:
j Design Procedure
'l -
Manufacture Unususi Service Condition Including Installation /
Environmental Construction Component Failure Operator Other (Specify) x The apparent cause was due to a decrease in lake water temperatur(
caused by cold weather.,
i
' 's 9.
Analysis of Occurrence:
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The only noticeable Environmental Impact was the removal of the al.
mentioned fish from the lake. The fish that were collected were disposed of through landfill operation. The fish that were not collected were disposed of through the trash disposal system.
P 4
- 10. Corrective Action:
Long term studies are in progress to determine the effects of p1'ar operation on the aquatic ecosystems of the Dardanelle Reservoir.
from this report and other data obtained is fed back into these s-to determine what changes might be made to the studies in order t<
ensure that adequata data is obtained for evaluating plant impact- -
Raview by APf L and its con'sultants of the results of these studi~ct determine what corrective action might be taken to reduce plant-ci i
on the Reservoir.
(e)
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July 5, 1974 NSP-lb, Rev. O Page 2 i i
t
m U:
i Non-Routine, Non-Radiological Environmental Report No. 50-313/74-6 1
11.
Failure Data:
The circumstances of this report are similar to those reported in j,
Non-Routine, Non-Radiological Environmental Reports 50-313/74-1, j
50-313/74-2, 50-313/74-3, 50-313/74-4, and 50-313/74-5.
i 12.
Reviews and Approvals:
Reviewed and Approved by:
Plant Safety Cocmtittee Yes (4 No ( )
j Plant Superintendent Yes (})
No ( )
t Referenec:
.JWA-715 Date: 12/9/74 Reviewed by:
uate:
/
/ 7f Licensirig ' Supervisor Ap'>rovedby!/
,f// / / '
1w.
Date: / 7 " /2 -- h/'
/
'" '5ty R'cv'iew Cori ittee
/
.'E/// /7 Approved by: /u 47~
em Date:
/
Manager of Nuclear Services Approved by: /
/,Y'/. M j tr/
Dato: M V. .'
director of,, Power Prod'uction f
/-
Approved by:
?
,e-Date:
m Senior Vice Pr'esident i
IU I
July 3, 1974~
NSP-10, Rev. O Page 3 of 3
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