ML19319E448
| ML19319E448 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/21/1975 |
| From: | Murphy W, Woodward J ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19319E441 | List: |
| References | |
| JWA-878, NUDOCS 8004100723 | |
| Download: ML19319E448 (3) | |
Text
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Non-Routine, Non Radiological Environmental Report No.. 50-313/75-14 2.
Report Date:
2/21/75 3.
Occurrence Date:
2/15/75 4
Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
Identification of Occurrence:
Fish kill on intake screens exceeding 3000 pounds based on 24-hour sample period.
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Coy'itions Prior to Occurrence:
Steady-State Power x
Reactor Power 2543 bMth Hot Standby Net. Output 839 MWe Cold Shutdown Percent of Full Power 99 %
Refueling Shutdown Routine Startup Operation Routine Shutdown Operation Load Changes During Routine Power Operation Other (Specify)
Four circulating water pungs were in operation 7.
Description of Occurrence:
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During routine fish' impingement monitoring 2/15/75, using procedure i
1607.10, Monitoring Fish Impinged on ANO-1 Intake Screens, 3205 pounds of fish were collected during a 24-hour sample period beginning at 8:00 a.m. 2/14/75 and ending at 8:00 2.m. 2/15/75. A mixture of gizzard and
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threadfin shad comprised 99% of the total weight. 'Other fish made up 1% of the total weight. Threadfin shad comprised 96% of the total number i
of shad.
t Intake water temperature at 8:00 a.m. 2/15/75 was 4$.5'F.
The ambient air temperature was'39'F.
f h) 8004100 M3 m.
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Non-Routine, Non-Radiological Environmental Report No. 50-313/75-14 8.
Designation of Apparent Cause of Occurrence:
Design
.Proce. dure Manufacture Unusual Service Condition Including Installation /
Environmental Construction Component Failure Operator Other (Specify)
X
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The apparent cause was due to a natural die off of threadfin shad during the~ winter season.
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Analysis of Occurrence:
(h The only noticeable environmental impact was the removal of the above
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mentioned fish from the lake. The fish that were collected were dis-posed of through land fill operation.
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Corrective Action:
Long term studies are in progress to determine the effects of plant operation on the aquatic ecosystems of the Dardanelle Reservoir.
Data
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from this report and other data obtained is fed back into these studies to determine what changes might be made to the studies in order to ensure that adequate data is obtained for evaluating plant impact.
Review by Arkansas Power 4 Light Company and its consultants of the results of these studies will determine what corrective action might be taken to reduce plant effects on the Reservoir.
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Non-Routine, Non-Radiological Environmental Report No. 50-313/75-14 11.
Failuro Data:
The circumstances of this' report-are similar to those reported in Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-1 through 50-313/75-13.
12.
Reviews and Approvals:
Reviewed and Approved by: Plant Safety Committee Yes (X)
No ( )'
Plant Superintendent Yes (X)
No ( )
Referenco:
JWA-878 Date: 2/21/75 Reviewed by:_
he Date: 2 2/ 7d' Licensing ~ Supervisor Approiled by:_ 0tt X. /d d w ),,j,iles,Date: __~7,/V9)7h
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9'S e t' eview Commi e#
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Approved by:
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Date: 2-2I/7d' Manager of Nuc1 car Udrvices
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Approved by: O r.J 11 // d d ) / i w Dato:
'2-/W/7Y J
Director of Power Production Approved by:
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f Dato:
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s July 5,1974 NSP-10, Rev. O Page 3 of 3'
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