Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Field test of corrosion control to protect asbestos-cement pipe /
Author Logsdon, Gary S.
Publisher U.S. Environmental Protection Agency, Research and Development, Municipal Environmental Research Laboratory : Center for Environmental Research Information [distributor],
Year Published 1981
Report Number EPA/600-S2-81-023
OCLC Number 07988116
Subjects Corrosion and anti-corrosives. ; Pipe, Asbestos-cement--Corrosion. ; Water--Purification.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-S2-81-023 In Binder Headquarters Library/Washington,DC 12/11/2017
EJBD  EPA 600-S2-81-023 In Binder Headquarters Library/Washington,DC 10/30/2018
Collation 3 pages ; 28 cm
Caption title. At head of title: Project summary. "Mar. 1981." "EPA/600-S2-81-023."
Contents Notes
"This research program was initiated to determine whether adding zinc orthophosphate to potable water would sufficiently coat an asbestos-cement pipe with zinc to prevent asbestos fibers from entering the water. Storage tanks and chemical and feed pumps were set up at each of the Greenwood, SC, water treatment plants, and zinc orthophosphate was fed into the system at an average rate of 0.3 mg/L. Two sections of new asbestos-cement pipe were installed to represent a low-flow and a high-flow water condition; they were removable for testing. Samples were periodically tested to determine the number of asbestos fibers in the water. The two pipe sections were removed and examined for the amount of zinc deposited on the surface. Although routine tests, such as pH and alkalinity, showed no significant changes during the study period, asbestos fibers in the water decreased substantially. Electron microscope photographs and energy dispersive X- ray spectra analyses showed coatings of zinc products on the two pipe samples. Thus, adding zinc orthophosphate under the existing water quality conditions reduced or prevented corrosion of asbestos-cement pipe."