ML19329A332
| ML19329A332 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 07/22/1974 |
| From: | Thies A DUKE POWER CO. |
| To: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001020908 | |
| Download: ML19329A332 (4) | |
Text
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AEC DISTRIBI lN FCR ?!.nT 50 DOCRET MATERIAL ~
6822 (TaiPORARY TORM)
CONTROL UO:
FILE:
E"*" ental Fne FROM:
DATE OF DOC DATE REC'D LTR TWX RPT CTHER Duka Power Company 4
Chcrintte, N.C. 28201 Mr. A.C. Ihies 7-22-74 7-26-74 X
TO:
ORIG CC OTHER SENT AEC PDR XXX A. Giambusso 1 signed CLASS UNCLASS PROP INFO INPUT NO CYS REC'D DOCKET NO:
XXX 1
(50-2 W 270/287 DESCRIPTION:
ENCLOSURES:
Ltr furn info concerning fish impingement at the Enclosure #1..." Summary of fish inoingement Ocon a Nuclear Station....trans the following...
data ner intake screen"...
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DUKE POWER COMPANY Powra BurLorwo 422 SouTu Cucacu STarzT, CHAnwrTE, N. C. asaoi A. C. Tures se.o. v.cc p.es:ec.,
P. O. Box 217e Peoouctem Ano Taasismssion July 22, 1974 i~
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Mr. Angelo Giambusso
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Deputy Director for Reactor Projects 7
Directorate of Licensing
'7 Office of Regulation
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U. S. Atomic Energy Commission Washington, D. C.
20545
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Re:
Oconee Nuclea tion Docket Nos 0-26
-270, -287
Dear Mr. Giambusso:
On July 11, 1974, six of the 24 condenser cooling water (CCW) intake screens at the Oconee Nuclear Station were inspected. A number of small finger 11ng fish were found impinged upon these screens. Oconee Environmental Technical Specification 1.4(A) requires a report of any significant fish mortalities, and in any case, any mortality which involves greater than 100 fish.
A total of 3,481 fish weighing 22 pounds had collected on the screens during the two-week interval from June 27 to July 11.
The fish were removed from the screens and categorized, where possible, as to screen location, type, size, degree of decomposition, and weight. This information is tabulated in Enclosure 1.
The six intake screens were for CCW pumps lA, 2A, and 3A.
Eighty-eight percent of the fish were located on the screens for pump 1A.
During the two weeks since the last inspection, the CCW pumps operated in the normal mode for the following time percentagec:
CCW Pump 1A 89%
CCW Pump 2A 31%
CCW Pump 3A 84%
It appears that screen location and not water velocity was the major factor in the collection of these fish.
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Mr. Angelo Giambusso Page 2 July 22, 1974 It is concluded that the mortality of these 22 pounds of fish had an insignificant effect on the environment.
Very truly yours, M
&r A. C. Thies ACT:vr cc:
Mr. Norman C. Moseley Mr. H. J. Logan S. C. Wildlife & Marine Resources Department O
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SUMMARY
OF FISil IMPINGEMENT DATA PER INTAKE SCREEN Intake
' Degree Of Screen Fish Impinged Size Groups Decomposition
- Weight IA1 Bluegill 494 2-4 cm 613 Class 1 45 6800 grams.
Yellow Perch 120 4-6 cm 1536 Class 2 419 White Crappie 3
6-8 cm 98 Class 3 157
-Pumpkinseed 1
8-10 cm 9
Class 4 1643 Warmouth Bass 1
10-12 cm 6
2264 Largemouth Bass 1
14-16 cm 1
Unidentified 1644 16-18 cm 1
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TOTAL FISH 2264 2264 1A2 Bluegill 502 2-4 cm 52 Class 1 9
3500 grams Yellow Perch 64 4-6 cm 745 Class 2 431 Unidentified 257 6-8 cm 23 Class 3 125 TOTAL FISH 823 8-10 cm 1
Class 4 258 10-12 cm 1
823 12-14 cm 1
823 2A1 Bluegill 212 2-4 cm 37 Class 1 1
500 grams Yellow Perch 7
4-6 cm 179 Class 2 143 TOTAL FISH 219 6-8 cm 3
Class 3 75 219 Class 4 0
21 9 2A2 Bluegill 158 2-4 cm 3
Class 1 2
400 grams Yellow Perch 9
4-6 cm 156 Class 2 101 TOTAL FISil 167 6-8 cm 8
Class 3 64 167 Class 4 0
167 3Al No fish impinged on Screen 3Al 3A2 Bluegill 7
2-4 cm 3
Class 1 0
10 grams Yellow Perch 1,
4-6 cm 4
Class 2 0
TOTAL FISH 8
10-12 cm 1
Class 3 8
8 Class 4 0
- Class 1 - No visible signs of decomposition 8
Class 2 - Slightly decomposed Class 3 - Badly decomposed but identifiable Class 4 - Badly decomposed, unidentifiable