ML19326B660: Difference between revisions
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{{#Wiki_filter:. | {{#Wiki_filter:. | ||
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1. | 1. | ||
. Non-Routin~e, Non-Radiological Environmental Report No.. | . Non-Routin~e, Non-Radiological Environmental Report No.. | ||
50-313/75-21 | 50-313/75-21 | ||
: 2. Report Date: | : 2. Report Date: | ||
| Line 39: | Line 28: | ||
2/22/75 4 Facility: | 2/22/75 4 Facility: | ||
Arkansas Nuclear One-Unit 1 ' | Arkansas Nuclear One-Unit 1 ' | ||
.Russellville, Arkansas | .Russellville, Arkansas 5. | ||
5. | |||
J Identification of Occurrence: ', | J Identification of Occurrence: ', | ||
Fish kill period. | Fish kill period. | ||
sample on intake screens ' exceeding 3000 pounds based on 24-hour | sample on intake screens ' exceeding 3000 pounds based on 24-hour | ||
: 6. , | : 6. , | ||
Conditions Prior to Occurrence: - . | Conditions Prior to Occurrence: - . | ||
Steady-State Power 'y Reactor Power h530 bMth Hot, Standby . | |||
Steady-State Power 'y Reactor Power h530 bMth | Net. Output 838 FMe Cold Shutdown Percent of Full \ Power 99 % | ||
Hot, Standby . | |||
Net. Output 838 FMe Cold Shutdown | |||
Percent of Full \ Power 99 % | |||
Refueling Shutdown .. I Routine Startup ' | Refueling Shutdown .. I Routine Startup ' | ||
Opera tion . | Opera tion . | ||
i Routine Shutdown _ | i Routine Shutdown _ | ||
Operation . | Operation . | ||
. 1 Load' Changes During Routine Power Operation 1 Other (Specify) | . 1 Load' Changes During Routine Power Operation 1 Other (Specify) | ||
' - Four circulating w'ater pumps were in operation. | ' - Four circulating w'ater pumps were in operation. | ||
: 7. \ | : 7. \ | ||
Description of Occurrence: | Description of Occurrence: | ||
t | t During 1607.10,routine fish impingement monitoring 2/22/75, using procedure Ibnitoring Fish Impinged on ANO-1 Intake Screens, 4425 pounds of fish were' collected during a 24-hour sample period beginning at-8:00 a.m. 2/21/75 and ending at 8:00 a.m. 2/22/75. : | ||
During 1607.10,routine fish impingement monitoring 2/22/75, using procedure Ibnitoring Fish Impinged on ANO-1 Intake Screens, 4425 pounds | |||
of fish were' collected during a 24-hour sample period beginning at- | |||
8:00 a.m. 2/21/75 and ending at 8:00 a.m. 2/22/75. : | |||
and threadfin shad made up 99.9%-of the total weight of fish.A mixture Other of gizzard | and threadfin shad made up 99.9%-of the total weight of fish.A mixture Other of gizzard | ||
. - - fishtotal the made up 0.1% | . - - fishtotal the made up 0.1% | ||
number of the total we.ight. . Threadfin shad made up 97% of . | number of the total we.ight. . Threadfin shad made up 97% of . | ||
of shad. | of shad. | ||
Intake water temperature, taken at 8:00 a.m. 2/21/75 was 46*F. A_bient | Intake water temperature, taken at 8:00 a.m. 2/21/75 was 46*F. A_bient | ||
' air temperature was 54'F. .. | ' air temperature was 54'F. .. | ||
9 l | |||
9 | |||
l | |||
) | ) | ||
s_/ ' | s_/ ' | ||
s sont 70587 ' | s sont 70587 ' | ||
j.) | j.) | ||
July 5, 1974 7 NSP-10, Rev. b | July 5, 1974 7 NSP-10, Rev. b Page 1 of 3 | ||
Page 1 of 3 | |||
.m .. | .m .. | ||
/ | / | ||
s') I a | s') I a | ||
("/ - | ("/ - | ||
Non-Routino, Non'-Radiological Environmenta'1. Report No. 50-313/75-21 . | Non-Routino, Non'-Radiological Environmenta'1. Report No. 50-313/75-21 . | ||
: 8. Designation of Apparent Cause of Occurrenec: | : 8. Designation of Apparent Cause of Occurrenec: | ||
Design Proc'c dure - | Design Proc'c dure - | ||
6 Manufacture , Unusual.Servico | 6 Manufacture , Unusual.Servico | ||
' , , Condition Including | ' , , Condition Including | ||
, Installation / Environmental | , Installation / Environmental Construction .. - | ||
Construction .. - | |||
~ | ~ | ||
Component Failure Operator , | Component Failure Operator , | ||
Other '(Specify) i' 1he apparent cause was due to a natural die off of threadfin shad during the winter season. . | |||
Other '(Specify) i' | |||
1he apparent cause was due to a natural die off of threadfin shad | |||
. , o | . , o | ||
'9. Analysis.of Occurrence: # # ' | '9. Analysis.of Occurrence: # # ' | ||
There has been no apparent adverse environmental impact due to the " | There has been no apparent adverse environmental impact due to the " | ||
large numbers of shad being impinged at the intake of ANO-1. h' inter-m_ , time mortality of threadfin shad due to low temperatures is not .- | large numbers of shad being impinged at the intake of ANO-1. h' inter-m_ , time mortality of threadfin shad due to low temperatures is not .- | ||
') > | ') > | ||
unusual due to their lack of resistance to low water temperatures. | unusual due to their lack of resistance to low water temperatures. | ||
j The ANO-1 intake screens only collect the shad after they become J | j The ANO-1 intake screens only collect the shad after they become J unable to resist the intake current due to lethargy caused by a decrease in water temperature. ' | ||
unable to resist the intake current due to lethargy caused by a | |||
decrease in water temperature. ' | |||
Due to their fecundity,threadfin shad can withstand a substantial decrease in population each yinter and still mainta'in a population | Due to their fecundity,threadfin shad can withstand a substantial decrease in population each yinter and still mainta'in a population | ||
* suitable ,for forage by game fish. | * suitable ,for forage by game fish. | ||
The fish that were collected during sampling periods were disposed of | |||
* through landfill operation. ' | |||
The fish that were collected during sampling periods were disposed of | |||
through landfill operation. ' | |||
.e | .e | ||
.. . 10. Corrective Action: | .. . 10. Corrective Action: | ||
Long term studies are in progrdss to determine the effects of plant operation on the aquatic ecosystgms of the Dardanelle Rescrvoir. , Data - | Long term studies are in progrdss to determine the effects of plant operation on the aquatic ecosystgms of the Dardanelle Rescrvoir. , Data - | ||
from this report and other data ob,t,ained is fed back into these studies - | from this report and other data ob,t,ained is fed back into these studies - | ||
| Line 182: | Line 89: | ||
- ensure that adequate data is obtained for' evaluating plant impac.t. | - ensure that adequate data is obtained for' evaluating plant impac.t. | ||
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 effects on the reservoir. | 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 effects on the reservoir. | ||
O - - | O - - | ||
o . | o . | ||
July.5, 1974 NSP-l'D;' Rey. O Page 2 of 3 | July.5, 1974 NSP-l'D;' Rey. O Page 2 of 3 | ||
,A . ' | ,A . ' | ||
t t | t t | ||
V) . | V) . | ||
Non-Routino, Non-Itadiological Environmental Report Nb. 50-313/75-21 | Non-Routino, Non-Itadiological Environmental Report Nb. 50-313/75-21 | ||
: 11. Failurc Data: - | : 11. Failurc Data: - | ||
The circumstances of this report are similar to those reported in Non-Routino, Non-Radiological ' Environmental Reports No. 50-313/75-1 | The circumstances of this report are similar to those reported in Non-Routino, Non-Radiological ' Environmental Reports No. 50-313/75-1 | ||
) = | ) = | ||
through 50-313/75-20. . | through 50-313/75-20. . | ||
* ~ | * ~ | ||
. i _ | . i _ | ||
I | I | ||
'12. Reviews and Apyrovals: ' | '12. Reviews and Apyrovals: ' | ||
Reviewed and Approved by: Plant Safety Committec Yes (X) No ( ) ' | Reviewed and Approved by: Plant Safety Committec Yes (X) No ( ) ' | ||
Plant Superintendent | Plant Superintendent | ||
.Yes (X)' 'No ( ) | .Yes (X)' 'No ( ) | ||
| Line 236: | Line 113: | ||
# Date: 2 27 7d' Licensing' Supervisor ' | # Date: 2 27 7d' Licensing' Supervisor ' | ||
/ | / | ||
Approved b 2 M d & ,. g_ /[[ Date: M- M-2\' | Approved b 2 M d & ,. g_ /[[ Date: M- M-2\' | ||
Sa ty e icw Committee ' ' | Sa ty e icw Committee ' ' | ||
Approved by: | |||
8 - #4 474 Date: 2 ilanager of Nuc1 car S ces / | 8 - #4 474 Date: 2 ilanager of Nuc1 car S ces / | ||
/ | / | ||
hyproved by: fjeu //.:L . Dato: $ .2 | hyproved by: fjeu //.:L . Dato: $ .2 | ||
* SJ | * SJ | ||
.. f~ | .. f~ | ||
I - | I - | ||
Director of I ower Product)o'n . | Director of I ower Product)o'n . | ||
Approved by: | Approved by: | ||
/ #40 v Date: 2 [j:S' ~ | / #40 v Date: 2 [j:S' ~ | ||
,SenidrhkoP[ident[ ' | ,SenidrhkoP[ident[ ' | ||
/. | /. | ||
g . | g . | ||
\ ' | \ ' | ||
L i July 5,' 1974 NSP-10,H[v.O Page 3 of 3}} | L i July 5,' 1974 NSP-10,H[v.O Page 3 of 3}} | ||
Revision as of 00:39, 1 February 2020
| ML19326B660 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/28/1975 |
| From: | Cavanaugh W, Murphey W, Rueter D ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326B649 | List: |
| References | |
| NUDOCS 8004170507 | |
| Download: ML19326B660 (3) | |
Text
{{#Wiki_filter:. 4 r-J, . , O
& j i
1.
. Non-Routin~e, Non-Radiological Environmental Report No..
50-313/75-21
- 2. Report Date:
2/28/75 3. Occurrence. Date:. 2/22/75 4 Facility: Arkansas Nuclear One-Unit 1 '
.Russellville, Arkansas 5.
J Identification of Occurrence: ', Fish kill period. sample on intake screens ' exceeding 3000 pounds based on 24-hour
- 6. ,
Conditions Prior to Occurrence: - . Steady-State Power 'y Reactor Power h530 bMth Hot, Standby . Net. Output 838 FMe Cold Shutdown Percent of Full \ Power 99 % Refueling Shutdown .. I Routine Startup ' Opera tion . i Routine Shutdown _ Operation .
. 1 Load' Changes During Routine Power Operation 1 Other (Specify)
' - Four circulating w'ater pumps were in operation.
- 7. \
Description of Occurrence: t During 1607.10,routine fish impingement monitoring 2/22/75, using procedure Ibnitoring Fish Impinged on ANO-1 Intake Screens, 4425 pounds of fish were' collected during a 24-hour sample period beginning at-8:00 a.m. 2/21/75 and ending at 8:00 a.m. 2/22/75. : and threadfin shad made up 99.9%-of the total weight of fish.A mixture Other of gizzard
. - - fishtotal the made up 0.1%
number of the total we.ight. . Threadfin shad made up 97% of . of shad. Intake water temperature, taken at 8:00 a.m. 2/21/75 was 46*F. A_bient
' air temperature was 54'F. ..
9 l
)
s_/ ' s sont 70587 ' j.) July 5, 1974 7 NSP-10, Rev. b Page 1 of 3
.m ..
/
s') I a ("/ - Non-Routino, Non'-Radiological Environmenta'1. Report No. 50-313/75-21 .
- 8. Designation of Apparent Cause of Occurrenec:
Design Proc'c dure - 6 Manufacture , Unusual.Servico
' , , Condition Including
, Installation / Environmental Construction .. -
~
Component Failure Operator , Other '(Specify) i' 1he apparent cause was due to a natural die off of threadfin shad during the winter season. .
. , o
'9. Analysis.of Occurrence: # # '
There has been no apparent adverse environmental impact due to the " large numbers of shad being impinged at the intake of ANO-1. h' inter-m_ , time mortality of threadfin shad due to low temperatures is not .-
') >
unusual due to their lack of resistance to low water temperatures. j The ANO-1 intake screens only collect the shad after they become J unable to resist the intake current due to lethargy caused by a decrease in water temperature. ' Due to their fecundity,threadfin shad can withstand a substantial decrease in population each yinter and still mainta'in a population
- suitable ,for forage by game fish.
The fish that were collected during sampling periods were disposed of
- through landfill operation. '
.e
.. . 10. Corrective Action: Long term studies are in progrdss to determine the effects of plant operation on the aquatic ecosystgms of the Dardanelle Rescrvoir. , Data - from this report and other data ob,t,ained is fed back into these studies - to determine what. changes might be made to the studios in order to .
- ensure that adequate data is obtained for' evaluating plant impac.t.
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 effects on the reservoir. O - - o . July.5, 1974 NSP-l'D;' Rey. O Page 2 of 3
,A . '
t t V) . Non-Routino, Non-Itadiological Environmental Report Nb. 50-313/75-21
- 11. Failurc Data: -
The circumstances of this report are similar to those reported in Non-Routino, Non-Radiological ' Environmental Reports No. 50-313/75-1 ) = through 50-313/75-20. .
- ~
. i _
I
'12. Reviews and Apyrovals: '
Reviewed and Approved by: Plant Safety Committec Yes (X) No ( ) ' Plant Superintendent
.Yes (X)' 'No ( )
Referenco: JIVA-882 Date: 2/26/75 i,
~
Reviewed by: o
# Date: 2 27 7d' Licensing' Supervisor '
/
Approved b 2 M d & ,. g_ /[[ Date: M- M-2\' Sa ty e icw Committee ' ' Approved by: 8 - #4 474 Date: 2 ilanager of Nuc1 car S ces /
/
hyproved by: fjeu //.:L . Dato: $ .2
- SJ
.. f~
I - Director of I ower Product)o'n . Approved by:
/ #40 v Date: 2 [j:S' ~
,SenidrhkoP[ident[ '
/.
g .
\ '
L i July 5,' 1974 NSP-10,H[v.O Page 3 of 3}}