ML19319A987

Requests Amend to Tech Specs App B,Section 1.4A,re Fish Impingement on Intake Screens

ML19319A987
Person / Time
Site:	Oconee
Issue date:	05/20/1975
From:	Thies A DUKE POWER CO.
To:	Giambusso A Office of Nuclear Reactor Regulation
Shared Package
ML19319A990	List: ML19319A987 ML19319A991
References
NUDOCS 8001020861
Download: ML19319A987 (4)

Text

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u wrunAn y evn.a3 CONTROL NO:

5768 9

FILE:-_ r-ea FROM: Duke P wer"Co..

DK,fE OF DOC DATE REC'D LTR TWX RPT OTHER Charlotte

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A.C. Thies 5-20-75 5-27-75 n

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Mr. Angela Ciambusso f-signed 38 SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D

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{-269, 70, and 287 DESCRIPTION:

ENCLOSURES:

Ltr notarized 5-20-75... trans the foll'owipg:

Amdt OL/ Change.to' Tech-Spec's.Appen' id B d

concerning Fish Impingement in hitalie' Screens

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PLANT NAME

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May 20, 1975 Q

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O Mr. Angelo Giambusso, Director

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Division of Reactor Licensing U. S. Nuclear Regulatory Commission k

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Washington, D. C.

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Re: Oconee Nuclear Station 4 ;,%

f,.y Docket Nos. 50-269, -270, -287 r

Dear Mr. Giambusso:

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Pursuant to 10 CFR 50.90, a change to Oconee Nuclear Station Technical Specifications, Appendix B, Section 1.4A, " Fish Impingement on Intake Screens," is hereby requested. The proposed change will provide a better method of inspection to quantify fish impingement on the Oconee Nuclear Station condenser circulating water (CCW) intake screens.

In i

addition, it will ' delete those requirements which have not provided representative-data in the past. A proposed replacement page for this Technical Specification change is attached.

The specific changes requested are detailed below with the appropriate j us tification.

1.

It is requested that the requirement for visual inspection of the intake screens from the intake structure be deleted.

The intake acreens are approximately 20 feet below the lake surface and are therefore nor visible from the intake structure.

This method of observation ' not representative of fish impingement and has only in rare instances. identified any fish mortalities.

Data supporting this request is presented in the semiannual reports for the Oconee Nuclear Station for the periods ending June 30, 1973, December 31, 1973,-June 30, 1974 and December 31, 1974.

i 2.

It is requested that the requirement for a detailed analysis of fish impinged on the intake screens each time a set of screens is pulled be~ deleted. The data which has been collected from a separate one year study (May 2, 1974 to May 11, 1975) at the Oconee Nuclear Station has' quantized the important features of the expected levels of fish impingement.

An analysis of fish impingement on the intake screens, pulled at random intervals for maintenance, has provided little information which can be used for comparative purposes.

5788

4 J:

.Mr. Angelo Giambusso

-Page 2-May 20,'1975!

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3.

It'is requested'that the quarterly underwater visual inspection,

-by scuba, of~the Oconee Nuclear Station intake screens be deleted.

The underwater. inspection is time consuming and expensive, and does not provide sufficient data to warrant its continuance.

It is not possible to accurately determina. species composition from the

' underwater inspection. The counting of impinged fish and size

' group determinations are also difficult.

4.f'It is proposed that a quarterly inspection of six intake screens (two from each. unit) be conducted.

This sample will be conducted with a' one-week accumulation of impinged f1sh by cleaning said intake' screens one week prior to the inspeccions, and a detailed analysis will be conducted to determine.the species, size, number and' weight of fish impinged. This will provide a regular sample, of fixed. duration, to determine long-term trends in fish impingement.

5.

It is requested that the reporting requirements concerning significant mortalities of fish, and in all cases, any mortalities that involve 100 or more fish, be deleted.

It is reasonable to i

expect that greater than 100 threadfin shad will be found impinged

.on the intake screens-during many times of the year.

This

. phenomenon-is described in'a March 27, 1975 letter to Mr. H. J.

Logan, South' Carolina Wildlife and Marine Resources Department, of which you received a copy. Data concerning fish impingement from the regular quarterly inspections described in 4. above will be. reported-in the Semiannual Report; thus, the report currently

. req'uired by Specification 1.4'.A'is' superfluous.

It is the opinion of Duke' Power Company that these proposed changes

- will result in more accurate determination.of fish impingement at the

'Oconee Nuclear Station'and will' eliminate those items which do not provide the proper information to perform a scientific study of fish

-impingement.

Very truly yours,'

A. C.L Thies-ACT:vr-

-Attachment l

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t Mr. Angelo Giambusso Page 3 May 20, 1975 A. C. THIES, be'ing duly sworn, states that he is Senior Vice President of Duke Power Company; that he is authorized on the part of said Company to sign and file with the Nuclear Regulatory Commission this request for amendment of the Oconee Nuclear Station Technical Specifications, Appendix B to Facility Operating Licenses DPR-38, DPR-47 and DPR-55; and that all statements and matters set forth therein are true and correct to the best of his knowledge.

WS A. C. Thies, Senior Vice President ATTEST ohn C. Goodman, 3r.

sistant Secretary Subscribed and sworn to before me this 20th day of May,1975.

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Notary Public lrf' Commission Expires:

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