ML19247B826
| ML19247B826 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 08/01/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Dunn C DUQUESNE LIGHT CO. |
| References | |
| NUDOCS 7908130574 | |
| Download: ML19247B826 (4) | |
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AVCUST 1 19 7 S Docket No. 50-334 Mr. C. N. Dunn, Vice President Operations Division Duquesne Light Company 435 Sixth Avenue Pittsburgh, Pennsylvania 15219
Dear Mr. Dunn:
In late 1975 we incorporated provisions into the Standard Technical Specification (STS) that required limiting cor.ditions for operation and surveillance requirenents for secondary water chemistry 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 chemistry conditions have been determined.
The intent of the provisions was to provide added assurance that the operators of newly licensed plants would properly monitor and control secondary water chemistry to limit corrosion of steam gen rator tubes.
In a number of instances the Technical Specifications have significantly restricted the operational flexibility of sone 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 cor:luded 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 sta" 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 more 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 nore effectively deal with any off-normal conditions that might arise.
Moreover, we have concluded that such a license condition, in conjunction with existing Technical Specifications on steam generator tube leakage and inservice inspection, would provide the most practical and comprehensive noans of assuring that stean generator tube integrity would oe naintained.
L1S11'O 79081305 W
s fir. C. N. Dunn Duquesne Light Campany Aggg37 1
1s79 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 monitoring requirenents prior to liarch 22, 1978, that has yet to be issued by the NRC, you need not remit a fee for the license amendment requested by this letter.
If you have not submitted a license amendnent request prior to March 22,1978, you should remit a Class III fee with your application.
If you have any questions, please contact us.
Sincerely,,
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A. Schwencer, Chief Operating Reactcrs Branch #1 Division of Operating Reactors
Enclosure:
Model License Condition cc: w/ encl osure See next page gi m u ma e n.
's Mr. C. N. Dunn Duquesne Light Company AUcust ins cc: Gerald Charnoff, Esquire Mr. James A. Werling Jay E. Silberg, Esquire Plant Superintendent Shaw, Pittman, Potts and Trowbridge Beaver Valley Power Station 1800 M Street, N.W.
P. O. Box 4 Washington, D. C.
20036 Shippingport, Pennsylvania 15077 Karin Carter, Esquire Special Assistant Attorney General Bureau of Administrative Enforcement 5th Floor, Executive House Harrisburg, Pennsylvania 17120 Mr. Roger Tapan Stone and Webster Engineering Co rporation P. O. Box 2325 8oston, Massachusetts 02107 Mr. J. D. Woodward R & D Center Westinghouse Electric Corporation Building 7-303 Pittsburgh, Pennsylvania 15230 B. F. Jone; 'demorial Library 663 Franklin Avenue Aliquippa, Pennsylvania 15001 Mr. Jack Carey Technical Assistant Duquesne Light Company P. O. Box 4 Shippingport, Pennsylvania 15077 Mr. R. E. Martin Duquesne Light Company 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Marvin Fein Utility Counsel City of Pittsburgh 313 City-County Building Pittsburgh, Pennsylvania 15219 61817Ps
ENCLOSURE MODEL LICENSE CONDITION SECOND2RY '<lATER CHEMISTpY t'ONITORING The licensee shall imolement a secondary water chemistry r.cnitoring progran to inhibit stean generatcr tube degradation. This program shall include:
1.
Identification of a sampling schedule for the critical parameters and control pcints for these par:reters; 2.
Identification of the Orccedures used to quantify arameters that are critical to control coints; 3.
Icertificaticn of prccess sampling ceints; 4.
?rccedure for tne recording and management of data; 5.
Procedures defining corrective actions for off control point chemistry ccnditicns; and t
6.
A crocedure idertifying the authority responsible for tne inter-cretation of tne data, and the secuence and timing of acministrative events required to initiate corrective action.
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