Guidelines on macrofouling control technology: Final report

Technical Report · Mon Jun 01 00:00:00 EDT 1987

OSTI ID:6334557

Condenser macrofouling is a major source of problems causing poor power plant availability and efficiency. This report presents the evaluation of antifouling coatings (toxic and nontoxic) and mechanical controls (screens and filters), together with recommended practices for intake screening and debris filters. Seven toxic coatings, applied on steel and concrete surfaces, were tested and evaluated at 19 generating stations located on the Pacific, Gulf, and Atlantic coasts over a 3-year period from 1983 to 1986. These coatings are ranked as to their performance. In addition, two nontoxic coatings of the low surface energy type were tested and evaluated. Traveling screen modifications designed to reduce or eliminate carry-over and to handle fish and heavy influxes of debris were evaluated at 13 generating stations located on the Pacific, Gulf, and Atlantic coasts, Puerto Rico, the Great Lakes, and on various rivers. These include through-flow, dual-flow, and angled-screen arrangements. Modifications include materials, variable speed drive control systems, upgrading of mechanical features for continuous operation, various screen meshes, fish buckets, dual-spray systems, debris scrapers, and various anticlogging features for the screenwash systems. Debris filters that supplement intake screening were evaluated at 10 generating stations located on the Pacific and Gulf coasts, and on various rivers. Three commercially available types most commonly used in the US and three ''home made'' designs were evaluated. Antifouling coatings and mechanical controls proved to be effective as macrofouling control measures. The acrylic-tributyltin polymer coating with cuprous oxide cotoxicant and rosinated vinyl with cuprous oxide toxicant were most effective. Recommended practices (guidelines) for intake screening and debris filters are discussed in detail.

• Research Organization: Stone and Webster Engineering Corp., Boston, MA (USA); Electric Power Research Inst., Palo Alto, CA (USA)
• OSTI ID: 6334557
• Report Number(s): EPRI-CS-5271; ON: TI87920486
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
ANTIFOULANTS
COMPARATIVE EVALUATIONS
SCREENS
BIOLOGICAL FOULING
CONDENSER COOLING SYSTEMS
THERMAL POWER PLANTS
AUXILIARY SYSTEMS
AUXILIARY WATER SYSTEMS
COOLING SYSTEMS
ENERGY SYSTEMS
FOULING
POWER PLANTS
200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)