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The author has utilized two types of instruments in conducting hydrogen studies. Hydrogen analyzers are used extensively in both the laboratory and in industrial steam generating plants. This is a collection of five case studies.
Boiler treatment chemistry has been shown to be critical in maintaining clean heat transfer surfaces and minimizing corrosion in higher pressure industrial boilers. Monitoring corrosion using hydrogen analysis has been shown to be the superior procedure for decades. Minimizing boiler feed water contamination from condensate leakage and upsets is also a critical paramenter required to maintain chemistry parameters necessary to promote passivation and clean heat transfer surfaces. Hydrogen analysis has also been shown to detect FACand subsequently monitr corrective procedures.
Keywords: Hydrogen, Hydrogen Analysis, Corrosion, Magnetite, Passivation, Boiler, Steam, Condensate, Monitoring, FAC (Flow Assisted Corrosion), UDC (Under Deposit Corrosion)
To better understand the mechanism of erosion-corrosion, electrochemical tests were performed on UNS G10180, UNS S31603 and UNS S32205, used in the construction of pulp/paper machinery components exposed to caustic environments.
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The authors will demonstrate that deploying only a modest number of point measurement devices in an area of elevated localized corrosion risk will provide the best possible combination of probability of detection (POD) as well as ongoing wall thickness monitoring for localized corrosion attack.
Gypsum scale formation takes place directly on the surface of heat exchanger without bulk or spontaneous precipitation in the reaction cell. Polymeric and non-polymeric inhibitors have been examined for their effects on the rate of scale formation.