ML19253B818
| ML19253B818 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 08/24/1979 |
| From: | Baer R Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 7910220276 | |
| Download: ML19253B818 (5) | |
Text
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UNITED STATES s,,
7, NUCLEAR REGULATORY COMMISSION y,' s
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AUG 2 4 g Docket Nos. 50-369 and 50-370 Mr. William O. Parker, Jr.
Duke Power Company P. O. Box 2178 422 South Church Street Char'otte, North Carolina 28242
Dear Mr. Parker:
SUBJECT:
SECONDARY WATER CHEMISTRY CONTROL (H:Guire Nuclear Station, Units 1 and 2)
In late 1975 we ir orporated provisions into the Standaro Technical Specifi-cations (STS) that required limiting conditions for operation and surveillance requirements for secondary water chemistry parameters. The proposed Technical Specifications for your plant (s), as well as for other Pressurized '.iater Plants that have been issued an Operating License since 1974 or are now under review for an Operating License, contain either these provisions or a requirenent to establish these provisions after baseline chemistry conditions nave been detennined. 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 generator tubes.
In a number of instances the Technical Specificaticns have significantly restricted the operational flexibility of scme 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 complexity 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 1icense condition that requires the implementation of a secondary water chemistry monitoring and control program containing appropriate procedures and acmin-istrative controls.
1150 108 7 D10220 zJ4
Mr. William O. Parker, Jr. qqg ; 4 M7c The required progran and procedures would be developed by the licensee (or applicant) 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, plant operation following such procedures would provide assurance that licensees would devcte proper attention to controlling secondary water chemistry, while also providing the needed flexibility to allow them to deal more effectively with any off-normal conditions that might arise.
Consequently, we request that ynu amend your FSAR to include your proposed secondary water chemistry program which will be referenced in a condition to your operating license and will replace any proposed Technical Specifi-cations on secondary water chemistry. We request that this information be provided by October 26, 1979. A medel license condition is enclosed. We have concluded that such a license condition, in conjunction with existing Technical Specifications on steam generator tube leakage and inservice inspec-tien, would provide the most practical and comprehensive means of assuring that steam generator tube integrity would be maintained.
If you have any questions, please contact us.
Sincerely, gbb Robert L. Baer, Chief Light Water Reactors Branch No. 2 Division of Project Management
Enclosure:
Model License Condition cc w/ enclosure:
See next page I150 109~
Mr. William 0. Parker, Jr.
Vice President, Stean Prcduction Duke Pomr Company P. O. Box 2178 422 South Church Street Char;otte, North Carolina 28242 cc: Mr. W. L. Porter Duke Power Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 Mr. R. 5. Howard Powr Systems Division Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. E. J. Keith EDS Nuclear Incorporated 220 %ntgomery Street San Francisco, California 94104 Mr. J. E. Houghtaling NUS Corporation 2536 Countryside Boulevard Clearwater, Florida 33515 Mr. Jesse L. Riley, President The Carolina Environmental Study Group 854 Henley Place Charlotte, North Carolina 28207 J. Michael McGarry, III, Esq.
Debevaise & Liberman 1200 Seventeenth Street, N. W.
Washington,D. C.
20036 Robert M. Lazo, Esq., Chairman Atomic Safety and Licensing Board U. S. Nuclear Regulatory Ccanission Washington, D. C.
20555 Dr. Enneth A. Luebke Atcmic Safety and Licensing Board U. S. Nuclear Regulatory Ccrmtission Washington,D. C.
20555 Cr. Cadet H. Hand, Jr., Director Bodega Marine Lab of California P. O. Bcx 247 Bodega Bay, California 94923 0
Mr. William 0. Parker, Jr.
cc: Anthony Z. Roi sman, Esq.
Natural Resources Cefense Council 917 - 15th Street, N. W.
Washington,D. C.
20555
..ichard P. Wilson, Esq.
Assistent Attorney General State of louth Carolina 2600 Bull Street Columbia, South Carolina 29201 Office of Intergovernmental Relations 116 West Jones Street Raleigh, North Carolina 27603 County Manager of Mecklenburg County 720 East Fourth Street Charlotte, North Carolina 28202 U. S. Environmental Protection Agency ATTN: EIS Coordinator Region IV Office 345 Courtland Street, N. W.
Atlanta, Georgia 30308 O
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il ENCLOSURE
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MODEL LICENSE CONDITION SECONDARY WATER CHEMISTRY MONITORING The licensee shall implement a secondary water chemistry monitoring program in accordance with (referench Licensee's Procedure) to inhibit steam generator tube degradation. This program includes:
~1.
Identification of a sampling sch'edule for the critical parameters and of control points for these parameters; 2.
Identification of the procedures used to measure the value of the critical parameters; 3.
Identification of prccess sampling points; 4.
Procedure for the recording and management of data; 5.
Precedures defining corrective actions for off-control point chemistry conditions; and
~. A procedure identifying (1) the authority responsible for the interpretation of the dsca and (2) the sequence and timing of administrative events required to initiate corrective action.
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