ML19312B895

Requests Tech Spec 4.1 Amend Defining Provisions to Identify &/Or Account for Radionuclides Which May Be Present at Low Activity Levels in Mixtures of Gamma Emitters.Proposed Tech Spec Replacement Pages Encl

ML19312B895
Person / Time
Site:	Oconee
Issue date:	05/06/1977
From:	Parker W DUKE POWER CO.
To:	Rusche B Office of Nuclear Reactor Regulation
Shared Package
ML19312B896	List: ML19312B895 ML19312B900
References
NUDOCS 7911250083
Download: ML19312B895 (3)

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, NRC DISTRIBUTION PcR PART 50 DOCKET M ATERI AL TO: FROM: CATE cP DOCUMENT Duke Power Company 5/6/77 Mr. Benard C. Rusche Charlotte, North garolina o4TE RECEivEo William O. Parker, Jr. 5/13/77

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following: Amdt. OL/ change to Appendit A tech specs... defines provisids to identify and/oraccountforradio$clideswhich may be present at low activity levels in

, mixtures of gamma emitters.....

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Mr. Benard C. Rusche, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission -

Washington, D. C. 20555 r Re: Oconee Nuclear Station ,

Docket Nos. 50-269, -270, -287 c s.

Dear Mr. Rusche:

As stated in our response to April 12, 1977 to Item 1 of IE Inspection Report 50-269, -270, -287/77-2 and pursuant to 10CFR50, 550.90, an amendment to Section 4.1 of the Oconee. Nuclear Station Technical Speci-fications, Appendix A to Facility Operating Licenses DPR-38, -47, and

-55 is requested. Proposed replacement pages for Technical Specifica-tion Table 4.1-3 are attached.

The proposed change to Technical Specification Table 4.1-? defines provisions to identify and/or account for radionuclides which may be present at low activity levels in mixtures of gamma emitters. Due to other radionuclides, which are present in the samples at much higher activity levels, it may not be possible to measure the activity level of some radionuclides at their specified sensitivity limit. This change is considered necessary to resolve the problem of accounting for these low activity radionuclides.

The provisions as stated in the technical specification change consist of re-i ^ 2ntifying the gamma isotopic analysis to an analysis of principal gamma emitters. In this analysis, the minimum detectable activities (MDA) of the nuclides not meeting the sensitivity limits of Table 4.1-3 will be compared with the total activity present from other nuclides.

If the MDA of each of these nuclides is less than 1% of the total activity present, it will not be included in the total activity deter-mination. If it is greater than 1% of the total activity present, it will be added to the total activity at its MDA concentration.

Ver- truly yours, q

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William O. Parker, Jr.

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May 6, 1977

. Page 2 WILLIAM O. PARKER, JR., being duly sworn, states that he is 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

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amendment of the Oconee Nuclear Station Facility Operating Licenses DPR-38, l

DPR-47, and DPR-55; and that all statements and matters set forth therein are true and correct to the best of his knowledge.

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Nilliam O. Parker, Jr., Vide President Subscribed and sworn to before me this 6th day of May, 1977.

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