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The measurement of induced AC voltages along a pipeline is a primary indicator of electrical safety hazards and AC corrosion risks under operating powerlines. This paper addresses several fallacies, misconceptions and common errors related to the measurement of these AC induced voltages.
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Few things in life improve quality, decrease costs and reduce the Environment impact. With the proper technology, using steel grit to prepare steel structures for coating can accomplish this.
Galvanized steel pipe is protected by a layer deposited by hard water, but may suffer corrosion in soft water. Presented are case studies of corrosion in galvanized water piping in a stadium, hotel, and county government building. Details of corrosion mechanism and mitigation strategies are also discussed.
Design of waterborne acrylic and styrenated acrylic resins for metal protection requires balancing a multitude of often competing properties. One classic example is attempting to maintain hardness and block resistance while simultaneously reducing the volatile organic content (VOC) demand of waterborne paints. During a recent new product development project, another recurring tradeoff emerged – attempting to deliver a robust adhesion profile while maximizing corrosion resistance.
This study exposed sections from two commercially shot peened S30409 tubes in 1 bar steam for up to 15,000 h at 600°, 625° and 650°C and specimens were removed at increments to characterize the oxide thickness and microstructure.
The technical objective is to demonstrate low-cost solutions to improve building insulation and energy efficiency through the addition of exterior paint coatings.
This paper outlines the essential features required in a software package that has sufficient capability to accurately predict and mitigate AC induction effects upon pipelines for a majority of rights-of-way.
Expands on the fundamentals of flow-accelerated corrosion and the mechanisms of the various types of this debilitating and costly type of corrosion. The paper discusses system hydrodynamics, materials of construction, operating practices, as well as the impact of water chemistry.
Issues faced by operators with low temperature sandstone reservoirs of only 40°C and 54°C and challenges these low temperatures brought, including high MIC for sulphate scale control and poor chemical retention & release properties during the reservoir condition corefloods.
Under deposit corrosion (UDC) and microbiologically influenced corrosion (MIC) are threats to dead legs and low flow/intermittent flow pipelines. Deposit characterization methods, corrosion mechanisms, mitigation methods and monitoring are addressed.
Ehanced oil recovery working pressure can reach up to 500 bars and in case of sudden depressurization local temperature can decrease down to -60°C. The aim of this work is to evaluate fracture toughness of two nickel containing steels as an alternative material.
Cyclic polarization measurements were used to illustrate the corrosion and passive behavior of the stainless steels under the tail gas conditions. Electrochemical behavior of stainless steels in SO2-saturated solutions with various concentrations of Cl- and F- was also studied.