ML19249A324
| ML19249A324 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/31/1979 |
| From: | Parr O Office of Nuclear Reactor Regulation |
| To: | Proffitt W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 7908220061 | |
| Download: ML19249A324 (5) | |
Text
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![pa nog'o, UNITED STATES NUCLEAR REGULATORY COMMISSION s.q
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i WASHINGTON. D. C. 20555 s,. m /
Docket No. 50-339 JUL 311979 W. W. L. Proffitt Senior Vice Presiden; - Pomr Operations Virginia Electric & Powr Company P. O. Box 26666 Ri ch,nond, Vi rgini a 23261
Dear W. Proffitt:
SUBJECT:
SECONDARY WATER CHEMISTRY CONTROL (North Anna Power Station, Unit 2)
In late 1975 we incorporated provisions into the Standard Technical Specifi-cations (STS) that required limiting conditions for operation and surveillance requirements f or c ' andary water chemistry parameters. The proposed Technical Specifications fc tr plant (s), as well as for other Pressurized Water Plants that have been iss an Operating License since 1974 or are now under review for an Operating Liu ase, contain either 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 chenistry to 1imit 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 conclaied that Technical Specification limits are riot 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 Lelieve 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 admin-istrative controls.
The required program 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 devote proper attention to controlling secondary water chemistry, while also previoing the ne.eded flexibility to allow them to deal more effectively with any of f-normal conditions that might arise.
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Mr. W. L. Proffitt Consequently, we request that you submit within 10 days your proposed secondary water chemistry program wttich will be referenced in a condition to your operating license and will replace any proposed Technical Specifications on seconda y water chemistry. A model 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 5
inspection, would provide the most practical and comprehensive means of assuring that steam generator tube integrity wou d be maintained.
l If you have any questions, please contact us.
Si ncerel y, b [w t an D. Parr, Chief Light Water Reactors Branch Nn. 3 Di'rision of Prr ject Management
Enclosure:
Model License Condition cc w/ enclosure:
See next page 84A
t Mr. W. L. Proffitt JUL $1 15,'g cc: Mr. Anthony Gambaradella Cl arence T. Ki pps, Jr., Esq.
Office of the Attorney General 1700 Pennsyl vani a Avenue, N.W, 11 South 12th Street - Room 308.
Washington, D. C.
20005 Richmond, Virginia 23219 Ca rroll J. Savage, Esq.
Richard M. Fester, isq.
1700 Pennsyl vani a Avenue, N.W.
211 St ribling Avenue Washington, D. C.
20006 Cnarlottesville, Virginia 22903 Mr. James C. Durstan Michael W. Maupin, Esq.
State Corporation Commission Hunton, Williams, Gay & Gibsor Connonwealth of Virginia P. O. Box 1535 Blandon Building Richmond, Vi rginia 23212 Ri chmond, Vi rgini a 23209 Mrs. June Allen Alan S. Rosenthal, Esq.
412 Owens Drive Atomic Safety and Licensing Appeal Board Hunts /ille, Al:6ama 35801 U.S. Nuclear Regulatory Commission Washington, D. C.
20555 Mr. James Torson 501 Leroy Michael C. Farrar, Esq.
Socorro, New Mexico 67801 Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Mrs. Margaret Dietrich Washington, D. C.
20555 Route 2, Box 568 Gordonsville, Vi rginia 22942 Dr. John H. Buck Atomic Safety and Licensing Appeal Board Willi a, H. Rodgers, Jr., Esq.
U.S. Nuclear Regulatory Cornission Georgetovo University Law Center Washington, D. C.
20555 600 New Jersey Avenue, N'.W.
Washington, D. C.
20001 Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Commission Mr. Peter S. Hepp Washington, D. C.
20555 Executive Vice President Sun Shipping & Dry Dock Company Mr. Michael S. Ki dd P. O. Box 540 U.S. Nuclear Regulatory Commission Chester, Pennsylvania 19013 P. O. Box 128 Spotsivania, Virginia 22553 Mr. R. B. Briggs Associate Di rector Dr. Paul W. Purdom 110 Evans Lane Department of Civil Engineering Uak Ridge, Tenaessee 37830 Drexel University Philadel phia, Pennsyl vania 19104 844
Mr. W. L. Proffitt JUL 311979 cc:
Dr. Lawrence R. Quarles Apartment he. 51 Kenda b a t-Longwod Kennett Square, Pennsylvania 19348 Mr. Irwi n B. Kroot Citizens Energy Forum P. O. Box 138 McLean, Vi rginia 22101 James B. Dougherty, Esq.
Potomac Alliance P. O. Box 9306 Washington, D. C.
20005 e
9 e
ENCLOSURE M)3EL LICENSE CONDITION SECONDARY MTER CHEVlSTRY WNITORING The licensee shall implement a secondary water chemistry monitoring program in accordance with (reference Licensee's Procedure) to inhibit steam generator tube degradation. This program includes:
1.
Identification of a sampling schedule 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 process sampling points; 4.
Procedure for the recording and management of data; 5.
Procedures defining corrective actions for off-control point chemistry conditions ; and 6.
A procedure identifying (1) the authority responsible for the interpretation of the data and (2) the sequence and timing of administrative events required to initiata corrective action.
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