ML19207B566
| ML19207B566 | |
| 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 7908300277 | |
| Download: ML19207B566 (5) | |
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'o UNITED STATES
'g NUCLEAR REGULATORY COMMISSION g
WASWNGTON. D. C. 20555 s....+/
Docket No. 50-338 JUL 311979 W. W. L. Proffitt Senior Vice President - Powr Operations Virginia Electric & Powr Company P. O. Box 26666 Richmond, Virginia 23261
Dear W. Pi cffitt:
SUBJECT:
' ;0NDARY WATER CHEMISTRY CONTROL gNorth Anna Power Station, Unit 1)
In your letter of November 9,1978, the Virginia Electric and Powr Company requested an amendment in the form of changes to the Technical Specifications, a Cherating License No. NPF-4 for North Anna Powr Station, Unit 1.
The proposed changes would complete Technical Specifications 3. 7.1.6 and 4. 7.1.6 by specifying conductivity limits and surveillance rcquirements for the secondary systen.
We have reviewd the information t re ided by you and have concluded that based on our evaluation below, that it is appropriate to remove the require-ment in the Technical Specifications for secondary water chemistry limits and surveillance.
In late 1975 we incorporated provisions into the Standard Technical Soecifi-cations (STS) that required limiting conditions for operation and surveillance requirements for secondary water chemistry parameters. The Technical Speci-fications for your plant (s), as well as all for other Pressurized Water Reactor plants that have been issued an Operating License since 1974, contain either these provisions, or a requirement to establish these provisions after base-line 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 generater 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 concltded that Technical Specification limits are not the most effective way of assuring that steam generator tube corrosion will he minimized.
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Mr. W. L. Proffitt g Due to the complexity of the corrosion phenomena 1' volved and the state-n of-the-art as it exists today, we believe that, in lieu of Technical Specifications, a more effective approach would oe to institute a license condition that requires the implementation of a secondary water chemistry monitoring and control program containing appropriate procedures and admir: -
istrative controls.
The required program and procedures would be developed by the licensee, 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 chenistry, 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 you submit within 10 days a revision to your request of November 9,1978, which deletes the technical specifications and proposes an amendment to your license that will include your secondary water chenistry program which will be referenced in a condition to the license and that will replace your existing Technical Specifications on secondary water chenistry. A model license condition is enclosed.
We have concl uded that such a license cordition, 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.
If you have any questions, please contact us.
Sincerely, E
ha anI Parr, Chief Light Water Reactors Branch No. 3 Division of Project Management
Enclosure:
I Model License Condition cc w/ enclosure:
See next page 852 275
Mr. W. L. Proffitt Jul. 311973 cc: Mr. Anthony Gambaradella Cl arence T. Ki pps, Jr., Esq.
Office of the Attorney General 1700 Pennsylvania Avenue, ii.L 11 South 12th Street - Room 308 Washington,D. C.
20006 Rictenond, Virginia 23219 Carroll J. Savage, Esq.
Richard M. Foster, Esq.
1700 Pennsylvania Avenue, N.W.
211 Stribling Avenue Washington, D. C.
20006 Charlottesville, Virginia 22903 Mr. James C. Dunstan
- Michael W. Maupin, Esq.
State Corporation Comission Hunton, Williams, Gay & Gibson Comonwalth of Virginia P. O. Box 1535 Blandon Building Richmond, Virginia 23212 Richmond, Virginia 23209 Mrs. June Allen Alan S. Rosenthal, Esq.
412 Owens Drive Atomic Safety and Licensing Appeal Board ibntsville, Alabama 35801 U.S. Nuclear Regulatory Comission Washington,D. C.
20555 W. James Torson 501 Leroy Michael C. Farrar, Esq.
Socorro, New Mexico 87801 Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Comission Mrs. Margaret Dietrich Washingten, D. C.
20555 Route 2, Box 568 Gordonsville, Virginia 22942 Dr. John H. Buck Atomic Safety and Licensing Appeal Board Willian H. Rodgers, Jr., Esq.
U.S. Nuclear Regulatory Comission Georgetom 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' Comission W. Peter S. Hepp Washington, D. C.
20555 Executive Vice President Sun Shipping & Dry Dock Company Mr. Michael S. Kidd P. O. Box 540 U.S. Nuclear Regulatory Comission Chester, Pennsylvania 19013 P. O. Box 128 Spots 1vania, Virginia 22553 Mr. R. B. Briggs Associate Director Dr. Paul W. Purdom 110 Evans Lane Department of Civil Engineering Oak Ridge, Tennessee 37830 Drexel University Philadelphia, Pennsylvania 19104 4
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Mr. W. L. Proffitt JUL 31 Igni cc:
Dr. Lawrence R. Quarles Apartmer.t No. 51 Kenda l-a t-Longwood Kennett Square, Pennifivania 19348 Mr. Irwin B. Kroot Citizens Energy Forum P. O. Box 138
. " Lean, Vi rginia 22101 James B. Dougherty, Esq.
Potomac Alliance P. O. Box 9306 Washington, D. C.
20005 0
B52 277 e
9
ENCLOSURE PODEL LICENSE CONDITION SECONDARY MTER CHEMISTRY FONITORING The licensee shall implement a secondary water chemistry monitoring program in accordance with (ntference 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 initiate corrective action.
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