ML19319E459
| ML19319E459 | |
| 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 8004100733 | |
| Download: ML19319E459 (3) | |
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Non-Routine, Non Radiological Environmental Report No..
50-313/75-15 2.
Report Date:
2/21/75 3.
Occurrence Date:
2/16/75 4.
Facility:
Arkansas Nuclear One-U, nit 1 Russellville, Arkansas 5
Identification of Occurrence:
Fish kill on intake screens exceeding 3000 pounds based on 8-hour sample period.
6.
Conditions Prior to Occurrence:
Steady-State. Power X
Reactor Power 2543 MWth flot Standby Net. Output 839 MWe Cold Shutdown Percent of Full Power 99 %
Refueling Shutdown Routine Startup.
Operation f\\
Routine Shutdown Q
Operation Load Changes During Routine Power Operation Other (Specify)
Four circulating water pumps were in operation.
i 7.
Description of Occurrence:
1 During routine fish' impingement monitoring 2/16/75, using procedure 1607.10, Moniroring Fish Impinged on ANO-1 Intake Screens, 2005 pounds of fish were collected during an 8-hour sample period.from 8:00 a.m.
2/15/75 and 4:00 p.m. 2/15/75. The projected fish impingement f6r the
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24-hour period beginning 8:00 a.m. 2/15/75 and'ending 8:00 a.m. 2/16/75 was 6015 pounds.
A mixture of gizzard and threadfin shad comprised 99%
of the total weight.
Other fis~h made up 1% of the total waight.
Threadfin shad comprised 98% of the total number of shad.
Intake water temperature at 8:00 a.m. 2/16/75 was 45*F.
The ambient air temperature was 51*F.
F oC 733 8o04100 July 5, 1974 NSP-10, Rev. O Page i of 3
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Non-Routine, Non,-Radiological Environmental Report No. 50-313/75-15 8.
Designation of Apparent Cause of Occurrence:
Design Proce, dure Manufacture Unusual Service Condition Including Installation /
Environmental Construction Component Failure Operator Other (Specify)
X The apparent cause was due to a natural. die off of threadfin shad during the winter season.
9.
Analy' sis of Occurrence:
(g 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.
The fish that were not collected.
were disposed of through the tras). disposal system.
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- 10. Corrective Action:
Long term studies are in progress to determine the effects of plant operation on the aquatic ecosystems of the Dardanelle Reservoir. Data 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 6 Light Company and its consultants of the
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results of these studies will determine what corrective action might
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be taken to reduce plant effects on the Reservoir.
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July S, 1974 NSP-lb, Rev. O Page 2 of'3
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Non-Routine, Non-Radiological Environ.nental Report No. 50-313/75-15 11.
Failurc Data.:
The circumstances of this report are similar to those reported in Non-P.outine, Non-Radiological Environmental Reports No. 50-313/75-1 through 50-313/75-14.
12.
Reviews and Approvals:
Reviewed and Approved by:
Plant Safety Committee Yes (X)
No ( )
Plant Superintendent Yes (X3 No ( )
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Referenec:
JNA-878 Date: 2/21/75 J
Reviewed by:
2-!d/!7[
_e Date:
Licensing Supervisor Approved by:__h,f d /[ / h c / M h a,.
}/W!7J Date:
/ Sar ty view Committ'e approved b :
W- - - -
'Date: 2. 2l
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iianager of Nuclear 8dvices
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Appro' l byibspegjf. t/ndd th w Date: W/u p/,5 l
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- Director of Power Prod'uction -
Approved by:
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Date:
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$crlor' Vid Pr9dident/
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July 5, 1974 NSP-10, Rev. O Page 3 of 3 l
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