ML19254B368
| ML19254B368 | |
| Person / Time | |
|---|---|
| Site: | Phipps Bend  |
| Issue date: | 08/30/1979 |
| From: | Moore H TENNESSEE VALLEY AUTHORITY |
| To: | Jason White ENVIRONMENTAL PROTECTION AGENCY |
| References | |
| NUDOCS 7909270385 | |
| Download: ML19254B368 (5) | |
Text
{{#Wiki_filter:- TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENN ESSEE 37401 AUGUST 3 0 1979 Mr. John C. White Administrator, Region IV Environmental Protection Agency 3L5 Courtland Street NE. Atlanta, Georgia 3! 08
Dear Mr. White:
PHIPPS BEND NUCLEAR PLA 'T - NPD13 PEPJ4IT N0. TN0029301 - C00LIIiG TOWER BLOW-DOWN MINIMIZATION REPORT Part I, page 6 of the NPDES permit for the subject plant requires the sub-mitte, during the system design stage, of a report describing how blevdown vat.r volume and temperature vill be minimized. Enclosed is our report describing the design for blowdown minimization and the design features available for operational control of solids concentration factors. Ccmprehensive operstional procedures vill be developed as the plant nears completion. Sincerely, - r ,( .,o Harry G. Moore, Jr., Ph.D. Acting Director of Environmental y Quality Enclosure cc (Enclosure): Mr. Kenneth E. BlacA, Regional Direc tor U.S. Fish and Wildlife Service 17 Executive Park Drive, NE. Atlanta, Georgia 30329 I'r. Sanford W. Harvey, Jr., Director, Region IV Enforcement Division Environmental Protection Agency g 3h5 ccurtland Ctreet, NE. O v oD g Atlanta, Georgia 30308 g% \\\\g
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.[f r Mr. Charles GMlan, Coordinator \\ Thermal Analysis Unic g g Enforcement Division Environmental Protection Agency 4 17 9 0 9 2 7 c 3f5 49 3h5 Courtland Street, NE. Atlanta, Georgia 30308 An Equal Opportunity Employer y g Q g ", 7, ~ 1046 279
AUGl;S T 1 0 1979 -2 Mr. John C. White Mr. Earl Le:ning, Chief Knoxville Regional Office Environmental Health Services 1522 Cherokee Trail T.noxville, Tennessee 37920 Mr. Elmo Lunn, Director Division of Water Quality Control Department of Public Health 621 Cordell Hull Building Nashville, Tennessee 37219 Mr. Lee Tebo, Chief Pollution Surveillance Branch U.S. Environmental Protection Agency College Station Road Athens, Gecrgia 30601 Director, Division of Site Safety and / Enviro:riental Anr. lysis Attention: Voss Moore, Director of Environmental Projects Nuclear Regulatory Commission Washington, D.C. 20555 1046 280
e a i Phipps Bend Design Features Available for Operational Control of the Solids Concentration Factor i Makeup flow rate for each tower will be monitored in that unit's control room. Control valves in the makeup lines vill be capable of being throttled by the operator to enable him to fully control the makeup flow by a combination of starting and stopping cooling tower makeup pumps and throttling flow in the makeup lines. Blowdovn will be discharged over a calibrated weir so that the basin water level (which will be continuously recorded) will determine the blowdown flow rate. Each tower basin will be provided with a high and low level alarm and continuous level indication which is provided to that unit's control room. Control of the cooling tower makeup and blowdown system vill be by remote manual means. The operator can control the cycles of concentration through the manipulation of =akeup flow. It is anticipated that a calibration curve will be generated that will correlate cycles of concentration vs. =akeup flow under various meteoro-logical conditions. After the =akeup flow is varied, the resulting solids con-centration can be verified by obtaining grab samples from the cooling tower basin. / 1046 281
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