ML19247B827

Requests Util Submit Proposed Secondary Water Chemistry Program to Be Incorporated in New License Condition. Current STS for All PWRs Are Ineffective Re Steam Generator Tube Degradation.Model License Condition Encl

ML19247B827
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	08/01/1979
From:	Schwencer A Office of Nuclear Reactor Regulation
To:	Goodwin C PORTLAND GENERAL ELECTRIC CO.
References
NUDOCS 7908130581
Download: ML19247B827 (4)

Text

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AUGUST 1

1979 Docket No. 50-s44 Mr. Charles Goodwin, Jr.

Assistant Vice President Portland General Electric Company 121 S.W. Salmon Street Portland, Oregon 97204

Dear Mr. Goodwin:

In late 1975 we incorporated provisions into the Standard Technical Specification (STS) that required limiting conditions for operation and surveillance requirements for secondary water chenistry parameters. The Technical Specifications for your plant (s), as well as all other Pressurized Water Reactor plants that have been issued an Operating License since 1974, either contain these provisions, or a requirement to establish these. provisions after baseline chenistry conditions have been determined.

The intent of the provisions was to provide added assurance that the operators of newly licensed plants woul'd properly monitor and control secondary water chemistry to limit corrosion of steam generator tubes.

In a number of instances the Technical Specifications have significantly restricted the operational flexibility of some plants with little or no benefit with regard to limiting corrosion of steam generator tubes. Based on this experience, and the knowledge gained in recent years, we have concluded that Technical Specification limits are not the most effective way of assuring that steam generator tube corrosion will be minimized.

Due to the conplexity of the corrosion phenomena involved, and the state-of-the-art as it exists today, we believe that, in lieu of Technical Specifications, a more effective approach would be to institute a license condition that requires the implementation of a secondary water chemistry monitoring and control program containing appropriate procedures and administrative controls. A Model License Condition that is acceptable to the staff for this purpose is enclosed.

The required program and procedures would be developed by the licensees, with any needed input from their reactor vendors or other consultants, and thus could nore readily account for site and plant specific factors that affect chemistry conditions in the steam generators.

In our view, such a license condition would provide assurance that licensees would devote proper attention to controlling secondary water chemistry, while also providing the needed flexibility to allow them to more effectively deal with any off-nornal conditions that might arise. Moreover, we have concluded that such a license conditien, in conjunction with existing Technical Specifications on steam generator tube leakage and inservice inspection, would provide the most practical and comprehensive means of assuring that steam generator tube integrity would be maintained, c.181SG V

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d Mr. Charles Goodwin, Jr.

Portland General Electric Company AUGUST I

1379 Consequently, we request that you submit a proposed amendment to your license to delete your existing Technical Specifications on secondary water chemistry and to incorporate the requirements of the enclosed Model License Condition into the body of your license within 60 days.

If you previously subnitted an application for a license amendment concerning steam generator nonitoring requirenents prior to March 22, 1978, that has yet to be issued by the NRC, you need not renit a fee for the license amendnent requested by this letter.

If you have not subnitted a license anendment request prior to March 22,1978, you should renit a Class III fee with your application.

If you have any questions, niease contact us.

Si ncerely,,

duettdL -

A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors

Enclosure:

Model License Condition cc: w/ enclosure See next page c18187

h fir. Charles Goodwin, Jr.

Portland General Electric Ccapany ;,UGUST I

G79 cc:

Mr. H. H. Phillips Robert M. Hunt, Chairman Portland General Electric Company Board of County Commissioners 121 S.W. Salmon Street Columbia County Portland, Oregon 97204 St. Helens, Oregon 97051 Warren Hastings, Esquire Counsel for Portland General Electric Company 121 S.W. Salmon Street Portland, Oregon 97204 Mr. Jack W. Lentsch, Manager Generation Licensing and Ar.alysis Portland General Electric Company 121 S.W. Salmon Street Portland, Oregon 97204 Columbia County Courthouse Law Library, Circuit Court Room St. Helens, Oregon 97501 Director, Oregon Departnent of Energy Labor and Industries Building, Roon 111 Sal en, Oregon 97310 Richard M. Sandvik, Esquire Counsel for Oregon Energy Facility Siting Counsel and Oregon Department of Energy 500 Pacific Building 520 S.W. Yamhill Portland, Oregon 97204 Michael Malmrose U. S. Nuclear Regulatory Commission Trojan Nuclear Plant P. r. Box 0 Rainier, Oregon 97048 Mr. Donald W. Godard, Supervisor Siting and Regulation Oregon Department of Energy Labor and Industries Building, Room 111 Sal en, Oregon 97310 c;E1ES

ENCLOSURE rend.L LICE *:5E CCNDITION

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The licensee shall imolerent a secondary water chemistry tenitoring orocrar to inhibit stear tenerator tube decradation.

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Identifica:icn of a sampling scnedule fcr the critical parameters a.d cor,tr:1 Ocints for these parameters; 2.

Ide-ti'ication c# the cr cedures used to quantify carameters that are Crit Cal :o C:r. trol CCirts; rvc=s.e s. = - 'i n r,. r. d. r,'e s -

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