ML19253A201
| ML19253A201 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/23/1979 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Grace R YANKEE ATOMIC ELECTRIC CO. |
| References | |
| NUDOCS 7908200099 | |
| Download: ML19253A201 (4) | |
Text
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e JULt 23373 Docket No. : 50-309 Mr. Robert H. Groce Licensing Engineer Yankee Atomic Electric Conpany 20 Turnpike Road Westboro, Massachusetts 01581
Dear Mr. Groce:
RE: MAINE YANKEF NUCLEAR POWER STATION In August 1976 we sent letters to the majority of licensees who cperate Pressu-ized Water Reactors (PWRs) regarding the control of sscondarf water chemistry to inhibit corrosion of steam generator tubes. The letters requestea the licensees to propose Tecnnical Specification changes to incorporate limiting conditions for operation and surveillance requirements for secondary water chemistrf parameters. Model Technical Specifications, which reflectea tne requirements contained in the Conmission's Standard Technical Specifications (STS), were incluceo for guidance.
Many licensees oDjected to the Model Technical Specifications principally on the basis that they could unnecessarily restrict plant operation. Tne majority of these licensees submitted alternative approaches that were directed more tward monitoring and recora keeping rather than specific limits on chemistry parameters. At the time of our request, we recognizec that a major disadvantage of the Technical Specifications was a potential decrease in operational flexibility, but our request was motivated by an overriding concern for steam generator tuce integrity. Our oojective was to provide addeo assurance that licensees would properly monitor and control seconaary water chemistry to limit corrosion of steam generator tubes.
Hcwever, based on the experience and kncwledge gained since 1976, we have nw concludet* that Technical Specification limits woulo not be the most effectiv; way of accorplishing this objective. Due to the conpiaxity of th, corrosion phenomena involved, and the state-of-the-art as it exists tocay, we believe tnat a more effective approach wculd oe to institute a license condition that requires the implementation of a seconoary water chemistry monitoring and control program containing appropriate procecures and acministrative controls. A Nocel License Concition that is acceptaole to the staff for this purpose is encloseo.
The required program and procedures woula be developea oy the licensees, with any neeceo input from their reactor ' vendors or otaer consultants, and thus could more readily account for site and plant specific factors that affect cheraistry concitions in :ne steam generators.
In our vi ew, such a license canaition wculo provice assurance tnat licensees woulo 803 268 7008E0uog9(4
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Yankee Atomic Electric Cogany devote proper attention to controlling secondary water enemistry, wnile also proviaing the needed flexibility to allcw them to core effectively deal with any off-normal conditions tnat mignt arise.
Moreover, we have concluded that such a license concition, in conjunction with existing Technical Specifications on steaa generator tube leakage and inservice inspection, would provice the most practical and co@rehensive means of assuring that steam generator tube integrity is maintaines 1
Consequently, we request that you submit a proposed ar.endnent to your i
license to incorporate the requirements of the enclosed Mocel License Condition into the body of your license within 60 cays.
If you previously submitted an application for a license mendment concerning steam generator monitoring requirements prior to Marcn R, 1978, you need not remit a fee for the license amencmenc requestea by this letter.
If you have not submittea a license amendment request prior to March 22, 1978, you should remit a Class III fee with your application.
If you have any questions, please contact us.
No further action will be taken on any proposed Technical Specification changes you may have suL,nitted in response to our August 1976 request.
Such change requests will be considered withdrawn unless you express objections within 60 days.
Sincerely,
+
Robert W. Reid, Chief Operating Reactors Branch +4 Division of Operating Reactors Enclosu re:
Model License Condition cc w/ enclosure:
See next page
,o 803 269
S f ankee Atomic Electric Company cc:
E. W. Inurlow, President Mr. Rooert R. Radcliffe Itaine Yankee Atomic Po.<er Company Of fice of Energy Resources 9 Green Street 55 Capitol Street Augusta,itaine 04330 Augusta, Maine 04330 tir. Donald E. Vandenburgh Vice President - Engineering Yankee Atomic Electric Company 20 Turnpike i ad Westboro, flassachusetts 01581 John A. Ritsher, Esquire Ropes and Gray 225 Franklin Street Boston, tiassachusetts 02110 f1r. John fl. R. Paterson Assistant Attorney General State of Maine Augusta, Maine 0 330 lir. Nicholas Barth Executive Director Sheeoscot Valley Conservation Association, Inc.
P. O. Box 125 Alna, Maine 04535 Wiscasset Public Library Association High Street Wi scasset, itaine 04578 firs. L. Patricia Doyle, President SAFE POWER FCR MAINE Post Of fice Box 774 Camden, itaine 04843 803 270
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ENCLOSURE P.0CEL LICENSE CCNDITICN SECCNCARY 'JATER CHEMISTRY MONITORING The licensee shall implement a secondary watar chemistry monitoring program to inhibit steem generator tube degradction.
his prcgram shall include:
1.
Identification of a sampling schedule for the critical parameters and control points for these parameters; 2.
Identification of the procedures used to quantify parameters that
.are critical in control points; 3.
Identification of process sampling points; 4.
Procedure for the recording and management of data; 5.'
Proceduras defining corr?ctive actions for off control point chemistry conditions; and 6.
A procedure identifying the authority responsible for the inter-pretation of the data, and :he sequence and timing of administrative events required to initiate corrective action.
e 803 271