The Experts below are selected from a list of 16839 Experts worldwide ranked by ideXlab platform
S V Narasimhan - One of the best experts on this subject based on the ideXlab platform.
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biofouling and microbial Corrosion Problem in the thermo fluid heat exchanger and cooling water system of a nuclear test reactor
Biofouling, 2009Co-Authors: T S Rao, Aruna Jyothi Kora, P Chandramohan, B S Panigrahi, S V NarasimhanAbstract:This article discusses aspects of biofouling and Corrosion in the thermo-fluid heat exchanger (TFHX) and in the cooling water system of a nuclear test reactor. During inspection, it was observed that >90% of the TFHX tube bundle was clogged with thick fouling deposits. Both X-ray diffraction and Mossbauer analyses of the fouling deposit demonstrated iron Corrosion products. The exterior of the tubercle showed the presence of a calcium and magnesium carbonate mixture along with iron oxides. Raman spectroscopy analysis confirmed the presence of calcium carbonate scale in the calcite phase. The interior of the tubercle contained significant iron sulphide, magnetite and iron-oxy-hydroxide. A microbiological assay showed a considerable population of iron oxidizing bacteria and sulphate reducing bacteria (105 to 106 cfu g−1 of deposit). As the temperature of the TFHX is in the range of 45–50°C, the microbiota isolated/assayed from the fouling deposit are designated as thermo-tolerant bacteria. The mean corrosi...
T S Rao - One of the best experts on this subject based on the ideXlab platform.
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biofouling and microbial Corrosion Problem in the thermo fluid heat exchanger and cooling water system of a nuclear test reactor
Biofouling, 2009Co-Authors: T S Rao, Aruna Jyothi Kora, P Chandramohan, B S Panigrahi, S V NarasimhanAbstract:This article discusses aspects of biofouling and Corrosion in the thermo-fluid heat exchanger (TFHX) and in the cooling water system of a nuclear test reactor. During inspection, it was observed that >90% of the TFHX tube bundle was clogged with thick fouling deposits. Both X-ray diffraction and Mossbauer analyses of the fouling deposit demonstrated iron Corrosion products. The exterior of the tubercle showed the presence of a calcium and magnesium carbonate mixture along with iron oxides. Raman spectroscopy analysis confirmed the presence of calcium carbonate scale in the calcite phase. The interior of the tubercle contained significant iron sulphide, magnetite and iron-oxy-hydroxide. A microbiological assay showed a considerable population of iron oxidizing bacteria and sulphate reducing bacteria (105 to 106 cfu g−1 of deposit). As the temperature of the TFHX is in the range of 45–50°C, the microbiota isolated/assayed from the fouling deposit are designated as thermo-tolerant bacteria. The mean corrosi...
He Bing - One of the best experts on this subject based on the ideXlab platform.
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Corrosion and Countermeasures of Atmospheric-Vacuum Distillation Unit
2009Co-Authors: He BingAbstract:Low temperature light oil Corrosion and high temperature heavy oil Corrosion are two important Corrosion types in atmospheric-vacuum distillation unit.The Corrosion Problem and its formation mechanism of atmospheric-vacuum distillation unit of Jinan Branch Co.,SINOPEC were discussed,and some countermeasures were offered.
Zhang Wei-hai - One of the best experts on this subject based on the ideXlab platform.
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Progress in Corrosion Problem in process of supercritical water oxidation
Modern Chemical Industry, 2011Co-Authors: Zhang Wei-haiAbstract:Supercritical water oxidation is a new technology for treating organic pollutants and wastewater.When the temperature and pressure exceeds the critical value of water(Tc=374.2℃ and Pc=22.12 MPa),the physical properties of water changes tremendously.In details,supercritical water can dissolve some materials generally insoluble in liquid water,especially some organic chemicals can be oxidized and decomposed efficiently in supercritical water,which is regarded as a kind of ideal homogeneous medium.Although the technology has many advantages,the Problem of Corrosion seriously hinders the industrial application of the technology.This paper reviews the research progress on the Corrosion Problem occurring in the process of supercritical water oxidation.The relevant parameters are analyzed for reducing the Corrosion to the materials of equipment.Beyond,this work reviews some Corrosion-resistance materials used in the process of supercritical water oxidation in order to develop better equipments against Corrosion in different media.
Brahim Benmokrane - One of the best experts on this subject based on the ideXlab platform.
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Flexural Behavior of Concrete Beams Reinforced with Deformed Fiber Reinforced Plastic Reinforcing Rods
Aci Structural Journal, 1998Co-Authors: Radhouane Masmoudi, Michèle Thériault, Brahim BenmokraneAbstract:Fiber reinforced plastic (FRP) reinforcing bars are being used as an alterntative to steel reinforcement to overcome the Corrosion Problem in bridge decks, parking garages, water and wastewater treatment facilities, marine structures, and chemical plants. This paper presents test results of concrete beams reinforced with FRP and conventional steel reinforcement. The beams were tested under static loading to investigate the effects of reinforcement ratio on cracking, deflection, ultimate capacities, and modes of failure. Based on this investigation, theoretical correlations for the prediction of crack width, maximum deflection, and ultimate load-carrying capacity are proposed.
