ML19317H223
| ML19317H223 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/22/1975 |
| From: | Cavanaugh W, Phillips J, Reuter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19317H216 | List: |
| References | |
| 50-313-75-01, 50-313-75-1, NUDOCS 8005010878 | |
| Download: ML19317H223 (4) | |
Text
M O :.
sooso3op 1.
Non-Routine, Non-Radiological Environmental Report No. 50-313/75-1 2.
Report Date:
1/21/75 3.
Occurrence Date:
1/14/75 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.
6.
Conditions Prior to Occurrence: _
Steady-State Power X
Reactor Pcwer = 2500 MWth Ilot Standby Net. Output 830 MWe Cold Shutdown Percent of Full Power 98 %
Refueling Shutdown Routine Startup Operation Routine Shutdown Operation Load Changes During Routine Power Operation Other (Specify) x Three circulating water pumps on for 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />. Four circulating water pumps on for 17 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br />.
7.
Description of Occurrence:
During routine fish impingement mo'nitoring 1/14/75, using procedure 1607.10, Monitoring Fish Impinged on ANO-1 Intake Screens', 3048 pounds of fish were collected during a 24-your sample period beginning at 8:00 a.m. on 1/13/75 and ending 8:00 a.m.
1/14/75. A mixture of gizzard and threadfin shad made up 99.9% of the total weight of fish.
Other fish made up 0.1% of the total weight.
Threadfin shad made up 95% of the total number of shad. Water temperature was 43*F at 8:00 a.m.
- 1/14/75 and ambient air temperature was 13 F.
i July 5,'1974 NSP-10, Rev. O Page 1 of 3
Non-Routine, Non-Radiological Environmental Report No. 50-313/75-1 8.
Designation of Apparent Cause of Occurrence:
Design Procedure Manufacture Unusual Service o-Condition Inc'uding Installation /
Environmental Construction Component Failure Operator Other (Specify)
X
'Ihe apparent cause was due to a natural die off of threadfin shad during the winter season, 9.
Analysis of Occurrence:
'Ihe only noticeable Environmental Impact was the remaval of the above mentioned fish from the lake. 'Ihe fish that were collected were dis-posed of through land fill operation.
4 10.
Corrective Action:
Long term studies are in progress to determine the effects of plant o}ieration 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 G' Light Company and its consultants of the results of these studies will determine what corrective action might j
be talten to reduce plant effects on the Rese:voir, i
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- July 5, 1974 NSP-l'0, Rev. O Page 2 of 3 1
J
Non-Ro6 tine, Non-Radiological Environmental Report No. 50-313/75-1 11.
Failure Data:
'lhe circumstances of this report are similar to those reported in Non-Routine, Non-Radiological Environmental Report Nos.
through 50-313/74-11.
50-313/74-1 12.
Reviews and Approvals:
Reviewed and Approved by:
Plant Safety Committee Yes (X)
No (- -)
Plant Superintendcut Yes (X)
No ( ) '
Reference:
' Jh'A-803 Date: 1/20/75
- h b
Reviewed by: M McA g 8.
l' Date:
/ J2 8
Licensing Supervisor
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Approved by: dlE}/
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Date: f. ~ 2 5 ~ 7 V' aafet,y eview o'
ittee-
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Approvcd by: /t,
.t/s m 'NWN Date:
/ 7'3 7V
,FbnagerofNuTlearServicedj
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Approved bylh)Y bfby. /
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Date: /~D h #20
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Director of Power Production Approved by:
Date: /,78-95 Senior Vice President July 5, 1974 NSP-10, Rev. O Page 3 of 3
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