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ASSESSMENT OF CORROSION PRODUCTS FROM ONCE-THROUGH COOLING SYSTEMS WITH MECHANICAL ANTIFOULING DEVICES
Citation:
Spooner, C. ASSESSMENT OF CORROSION PRODUCTS FROM ONCE-THROUGH COOLING SYSTEMS WITH MECHANICAL ANTIFOULING DEVICES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-80/026 (NTIS PB80181902), 1980.
Description:
The report gives results of an assessment of corrosion products from steam-electric power plant once-through cooling systems equipped with mechanical antifouling devices. (About 67% of the currently operating plants in the U.S. use once-through cooling systems. Various cleaning mechanisms, used to minimize the reduction of the thermal efficiency of heat exchange in the condenser tubes--caused by corrosion and biofouling--include chemical and off-and on-line mechanical methods.) On-line mechanical cleaning may lead to increased levels of metals in the effluent due to abrasion of the condenser tubes. Since some abraded metals at sufficiently high concentrations harm aquatic organisms and lead to other environmental damage, metal concentrations in cooling water discharges which stem from on-line mechanical condenser tube cleaning systems need to be determined. This report addresses the significance of this effect, based mainly on comments from utilities experienced with the Amertap system and from the manufacturer.