ML19319E467
| ML19319E467 | |
| 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 | |
| NUDOCS 8004100740 | |
| Download: ML19319E467 (3) | |
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Non-Routine, Non Radiological Environmental Report No. 50-313/75-16 2.
Report Date:
2/21/75 3.
Occurrence Date:
2/17/75 i
4 Facility:
Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.
_ Identification of Occurrence:
i Fish kill on intake screens exceeding 3000 pounds based'on 24-hour sample period.
'6.
Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2543 MWth Hot Standby Net. Output 839 MWe 1
Cold Shutdown
. Percent of Full Power 99 %
s Refueling Shutdowr Routine Startup Operation s
Routine Shutdown Operation x-Load Changes During Routine Power Operation Other (Specif' )
y s
7.
Description of Occurrence:
During routine fish' impingement monitoring 2/17/75, using procedure 1607.10,. hbnitoring Fish Impinged on ANO-1 Intake Screens, 3350 pounds of fish were collected during a 24-hour sample period beginning 8:00 a.m. 2/16/75 and ending 8:00 a.m.' 2/17/75.
A mixture of gizzard and threadfin shad comprised 99.9% of the total weight. Other fish made up 0.1% of the total weight. Threadfin shad comprised 98% of the total number of shad.
Intake water temperature at 8:00 a.m. 2/17/75 was 44*F.
The ambient air temperature was 32*F.
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Noa-Routine, Non-Radiological Environmental Report No. 50-313/75-16 8.
Designation of Anparent Cause of Occurrence:
Dasign Proce, dure Manufacture linusual Service Condition Including
-Installation /
Environmental Construction Component Failure-
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Operator Other (Specify) x The apparent cause was due to a natural die off of threadfin shad during the winter season.
9.
Analysis of Occurrence:
O The only noticeable environmental impact was the removal of the above mentioned fish from the lake. The fish that were collected were dis-N- '
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 ecosys tens 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 impa~ct.
Review by Arkansas Power 6 Light Company and its consultants of the results of these studies will determine what corrective action might be taken to reduce plant eff: cts on the Reservoir.
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Non-Routine, Non-Radiological Environmental Report No. 50-313/75-16 J
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Failure Data:
Routine, Non-Radiological Environmental Reports No.The 50-313/75-1 through 50-313/75-15 i
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12.
Reviews and Approvals:
t Reviewed and Approved by: Plant Safety Committee A
Yes (x)
No ( )
Plant Superintendent Yes (X)
No()
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Reference:
JWA-878 Date: 2/21/75 Revicwed by:_
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v Datc: 7-2/ 7f Licensing Supervisor 1
Approved by:D/rm,]f f}d 7
, if,a, Date: 7/p//7)
S. ety ev'cw Committ.
Approved by:
Date:
2f 7
Manager of Nuclear S' rvices
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Approved by:.0tsms./ff 6 d mt{, d j,)(sy, Date:_ 2-/y V/7 3
/ Director of Power Productjon Approved by:
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.: p Date: f[2r[7[
Senio'rhI[cPr/sident/
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