The cost of rehabilitating the 38,000 km of water distribution piping in Ontario, currently valued at $21.2 billion ($2,725 per capita) has become a major focus of attention. Not only is it estimated that 15% of the water supplied is unaccounted for but the average […]
It has been estimated that 5 to 10% of the approximately 200,000 petroleum product storage tank systems in Canada are leaking and about 40 to 50% of these are a result of corrosion perforations in the tankage.* External corrosion is responsible for about 85% of […]
The corrosion susceptibility of steel storage tank systems is now well recognized by government regulatory agencies since most Provincial governments in Canada have introduced legislation making it mandatory that new tank installations incorporate corrosion control equipment and that existing tanks and piping be upgraded to […]
Most metals exposed to a liquid phase corrosive environment can be protected from aggressive corrosion attack using an electrochemical prevention technique, either cathodic protection (CP), anodic protection (AP) or potential adjustment protection (PAP). Which of these methods of protection is appropriate depends primarily on the […]
The corrosion of flat bottom storage tanks has not been historically a serious problem to the petroleum refining industry. This may have to do in par with the fact that most tanks are constructed on elevated granular pads which afford good drainage and also as […]
A 1954 survey by NACE Subcommittee TP- IHIII on oil-string casing corrosion indicated that 79% of failures on producing gas or oil wells in the U.S. were due to corrosion. Battle (3) extrapolated the NACE 1954 survey to estimate the number of casing failures in […]
The possibility that cathodic protection (CP) could successfully reduce corrosion on reinforced concrete structures exposed to the atmosphere was postulated by Finley in 1961 and later attempted on bridge decks by Stratfull and Fromm during the 1970’s. Much of the research work into the types […]
A 1985 study prepared by Canada Mortgage and Housing Corporation stated that “the overall cost of repairs to damaged parking structures in Canada has been estimated at 1.5 to 3 billion dollars.” Most of the damage which has necessitated these repairs has been caused by […]
The corrosion susceptibility of steel storage tank systems is now well recognized by government regulatory agencies and most Provincial governments in Canada have introduced legislation making it mandatory that new tank installations incorporate corrosion control equipment and that existing tanks and piping be upgraded to […]
Soil side corrosion of surface storage tanks can be a serious problem. In many industries the life of the tank is limited by external corrosion of the tank bottom. Cathodic protection (CP) is a cost effective technique used to eliminate soil side corrosion and hence […]
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