ML19320A350
| ML19320A350 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/16/1975 |
| From: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| To: | Anthony Giambusso Office of Nuclear Reactor Regulation |
| References | |
| 597, NUDOCS 8005010847 | |
| Download: ML19320A350 (3) | |
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ARK ANS AS POWER & LIGHT COMPANY 72203.(4011372 4 311 ers a LOUISIANA STAEETS
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United States Atomic Energy Commission washington, D. C.
20545 N /'j' Subj ect: Arkansas Power G Light Company Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Environmental Monitoring
Dear Mr. Giambusso:
Mr. D. R. Muller's letter of January 9,1975, to Mr. J. D. Phillips out-lined the L.C's recommendations for an expanded monitoring program to determine the significance of the recent fish impingements at Arkansas Nuclear One-Unit 1 (ANO-1) on the Dardanelle Reservoir fishery and to establish specific remedial action. We agree that alterations to our program are appropriate and actually had begun studying possible changes before receipt of the aforementioned letter. Specifically addressing the AEC recommendations, we wish to provide the following information (numbers correspond to those in the referenced letter):
1.
Our current practice is to use land fill disposal of those fish collected for sampling and to grind up fish during other periods.
The design of the intake structure is such that the manpower requirements for collecting all fish impinged on a cor.tinuous basis are prohibitive. 'Iherefore we cannot implement your recommendation to discontinue grinding of impinged fi.th at this time. We would like to point out, however, that during the periods of bubble curtain testing (six (6) weeks per season) we are only grinding up fish one (1) day per week while at other times we are grinding fish when not monitoring per the Environ-mental Technical Specifications (ETS).
We are investigating design modifications to facilitate easier collection of fish for alternate disposal and will provide our proposed course of action and a schedule for implementation by February 14, 1975.
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T AX P AYtNG, INVESTOR OWNED MEMBE A MIDDLE SOUTH UTILITIES SYSTEM
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iMr. is.-Gicmbusso January 16, 1975 12.
The impingement sampling program required by the ETS is currently supplemented by a test program to determine the efficiency of the air bubble curtain in the intake canal. - These combined pro-grams exceed the ETS requirements and approach the recommendations in the referenced letter.. We are studying the AEC recommendations and will submit proposed changes to the ETS by February 14, 1975,
-to modify sampling programs to meet the intent of the recommenda-tions and will impicment them on AEC approval.
3.
We feel that.our current thermal monitoring provides sufficient data to correlate water temperature to observed impingement.
In general, a comparison of average data from a five (5) year period of temperature readings in the Illinois Bayou to present condenser water box temperatures indicates that the water box temperature is The continuous representative of the Illinois Bayou temperature.
water box temperature readings can then be correlated to observed impingement. We will provide details of this correlation by February 14, 1975.
4 We have asked our _onsultants to make recommendations to us for modifications to present sampling programs or for a new program which could be used to estimate the population of threadfin shad in the Dardanelle Reservoir. They are studying previous programs used at other locations to determine the best methods to be used in this study. We will provide details of this study and an implementation schedule by February 14, 1975.
5.
Our consultants are developing a laboratory study program of the effects of reduced temperature on the swim speed and behavior of shad which we will outline in a report to the AEC by February 14, 1975.
6.-
We have had reports from our consultants and others of natural winter die offs of threadfin shad in reservoirs (in particular Dardanelle Reservoir) and of previous fish population studies which have shown fluctuations in the shad population which can be attributed to nothing other than natural winter die off.
We are gathering this information and will provide it to the AEC by February 14, 1975, although it appears that quantitative data is not availabic.
If you have any further comments concerning the above, please notify us.
Very truly yours, William Cavanaugh III Manager, Nuclear Services
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AEC DISTRIB. ION FOR PART 50 DOCKET MATERI..
(TEMPORARY FORM)
CONTROL NO:
597 FILE:M_NM O FROM. Arkansas Power & Light C DATE OF DOC DATE REC'D LTR TWX RPT OTHER Little Rock, Ark 1-16-75 1-20-75 xx William Cavanaugh III ORIG CC OTHER SENT AEC PDR TO:
SENT LOCAL PDR vvvv Mr. A. Giambusso 1-signed CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
1 50-313 xxxx ENCLOSURES:
DESCRIPTION:
Ltr ref our 1-9-75 itr furn comments on the AEC's recommendations for an expanded g
cxp:nded monitoring program to determine
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the significance of the recent fish imping-enents at Arkansas Unit 1......
Arkansas #1 1-21-75 JGB FOR ACTION /lNFORMATION BUTLER (L)
SCHWENCER (L) 8ffEMANN (L)
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BRAITMAN QGC, ROOM P 506A MACCARY GAMMILL H. GEARIN (L)
SALTZMAN v@UNTZING/ STAFF KNIGHT K STNER E. GOULBOURNE (L)
ABEL CASE PAWLICKl ALLARD P. KREUTZER (E)
PLANS GIAMBUSSO SHAO SPANGLER J. LEE (L)
BOYD STELLO M. MAIGRET (L)
MCDONALD S. REED (E)
CHAPMAN MOORE (L)
HOUSTON ENVIRO-M. SERVICE (L)
DUBE (Ltr)
DEYOUNG (L)
NOVAK WU LLER SKpVHOLT (L)
ROSS DICKER S. SHEPPARD (L)
E. COUPE PETERSON
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IPPOLITO KNIGHTON M. SLATER (E)
D. THOMPSON (2)
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