...Abstract Magnesium is widely used as anode material for the potable water tanks in the offshore structures due to its excellent corrosion protection performance. However, Mg anodes installed in the PWT sometimes corrode with an abnormally high corrosion rate, leading to pH increase...

.... The outcome will be a better understanding of how certain water chemistries bring about the specific electrochemical conditions that enable cold water pitting. EXPERIMENTAL PROCEDURES Materials Abstract The electrochemical pitting behavior of UNS C11000 copper was investigated in synthetic potable water...

...Common Water-Related Problems Potable water systems can be prone to problems if not properly considered during design, construction and operation. These problems typically fall into three broad categories: Loss of operating efficiency related to formation for scale and/or other deposits...

...Abstract Reduction of lead and copper in potable water systems has been mandated by the USEPA. One component of this program is the use of chemical treatment to reduce corrosion of piping and solder to prevent entry of these metals into solution. Field application of electrochemical noise...

... ( Metals Park, Ohio : 1982 ), p. 285 . 4 Metals Handbook , 9 ^th edition, Vol. 16 , Machining ( Metals Park, Ohio : 1989 ), p. 805 . 5 Gregory   R. , " Lead: A Source of Contamination of Tap Water ," in Corrosion and Related Aspects of Materials for Potable Water Supplies...

... with the high initial dosages used to sterilize potable water systems is reported. As a biocide and an oxidant, chlorine has other and secondary effects on corrosion behavior. Case histories of several of these are reported. Guidelines for alloy usage are developed. Chlorine stainless steels carbon steel...

...The electrolyte selected was potable water from University City in National University of Mexico. Abstract The test methods for laboratory evaluation of paint coatings are used despite well known problems of interpretation of data and lack of correlation with practical experience. Our laboratory...

... the USEPA maximum contaminant level (MCL) of 6 μg/L. A passivating layer of tin oxide was hypothesized to explain the low Sb concentrations. The published studies all used pH values of 8.4 or less. However, higher pH values are common in potable water distribution systems, particularly those that use lime...

... of microbiologically influenced corrosion of copper in simulated potable water. A sterile control and inoculated test environment were examined in parallel using electrochemical, microbiological and optical techniques. Copper electrodes upon which biofilms formed in the inoculated cell sustained corrosion under free...

... for the internal protection of potable water and wastewater mains. Key performance properties of the lining systems were reviewed and tested, together with handling and safety characteristics. The behavior of the two 100% solids polyurethanes was excellent not only in all tests but in their handling and safety...

...Abstract The performance of several coating systems were tested for immersion exposure in potable water storage tank service. Tests were performed for a period of several months in-situ by application of coating systems test patches to a tank interior and was examined periodically during normal...

... treated cooling water and potable water. In every case, the primary cause of failure was associated with conditions in these systems which allowed the MIC to become established, thereby accelerating the failure. Protective systems such as galvanizing were unable to protect the substrate from failure...

...Abstract Polyphosphates are effective inhibitors to control a variety of problems in potable water distribution systems. They are produced from the condensation reaction between phosphoric acid and a base. The Na₂O:P₂O₅ ratio determines the chain length...

... that dominate the industry today for lining potable water storage tanks because it is safer, faster to apply, more economical and offers greater longevity. This paper covers the basic definition and history of polyurethane as well the wide range of applications in a variety of industries. Next, the paper covers...

... sparged. Two chemical inhibitor treatments were evaluated besides an untreated control: 10 mg/L zinc with 50 mg/L orthophosphate ions; and 10 mg/L zinc with 50 mg/L polyphosphate (1.1:1 Na₂O:P₂O₅). These treatment levels are extremely high for use in potable water systems...

...THE REHABILITATION TECHNIQUE Abstract Premature failures in copper potable water systems are often a direct result of the workmanship practices that were used when the systems were installed. One of the workmanship practices that can lead to accelerated corrosion of copper piping systems...

... tube, and lead soldered copper loops. lead corrosion copper corrosion potable water metal dissolution chlorine effects corrosion monitoring pipe loop models INTRODUCTION In recent years, public water supplies have been under constant and increasing pressure by federal regulations to monitor...

... Corrosion water treatment pipe loop system corrosion control potable water Pipe loop systems have been used to evaluate a variety of corrosion related parameters in drinking water. Corrosion rates can be determined, corrosion by-products and their concentrations can be identified, and various treatment...

... these variables contribute to the degree of risk and can adversely effect human health. Health Effects Lead Corrosion Potable Water Orthophosphate The Law The Safe Drinking Water Act (SDWA) passed by Congress in 1974 required the U. S. Environmental Protection Agency (USEPA) to protect public health...

... is not necessarily non-corrosive, thus requiring other corrosion control measures. Abstract This paper discusses corrosion which can occur in building water piping systems. Included are case histories involving hot and cold potable water pipe, hot water heat pipe, cooling water pipe, chilled water piping...