Accession Number : ADA296666

Title :   New Electrical Control Methods to Prevent Power Plant Fouling,

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS

Personal Author(s) : Mazzola, Michael S. ; Grothaus, G. ; Walch, Marianne ; Jones-Meehan, Joanne ; Halpin, Mark S.

PDF Url : ADA296666

Report Date : JUN 1994

Pagination or Media Count : 10

Abstract : Heat exchangers and other power plant related equipment represent critical operational and maintenance concerns Scale formation and biofouling in power plant steam condenser tubes, in service water piping, and in process-liquid piping (manufacturing) are wide spread phenomena.' Biofouling and the resultant corrosion can be major factors in reducing the operating capacity of these systems. Since overrating these systems to account for the degradation -in performance can be selt- defeating, especially with heat exchangers, there is a need for improved prevention technology. The choice of prevention technology is determined not only by economic factors such as maintenance costs and file efficiency, but also by environmental concerns related to the methods used to remediate the fouling. Chemical treatment, either for removal by acid treatment or for prevention by water chemistry control, is a typical remedy. Research into nonchemical methods for prevention of biofouling is justified by the costs associated with current methods and policies. As a result, a recent TVA-sponsored workshop noted several emerging electrical technologies as candidates for the control of biofouling, including the zebra mussel, in both electric utility and ship board systems. These technologies can be separated into remediation methods (i.e., removal of existing fouling) and prevention methods. (KAR) P. 2

Descriptors :   *BIOLOGICAL CONTAMINATION, *FOULING, *ELECTRIC POWER PLANTS, *ANTIFOULING, MAINTENANCE, SHIPS, REMOVAL, POLICIES, DEGRADATION, ECONOMICS, ACOUSTIC WAVES, HEAT EXCHANGERS, ELECTRICAL PROPERTIES, COSTS, SCALE, CHEMICAL REACTIONS, SHIPBOARD, PREVENTION, WATER PIPES, ELECTRICAL EQUIPMENT, ACIDS, WATER CHEMISTRY.

Subject Categories : Electric Power Production and Distribution
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE