Chemistry Practical: Activity Series of Metals Introduction: The chemical activity of a metal is directly related to its practical use. In this investigation you will investigate the chemical activity of metals with oxygen‚ water‚ acid and alkali‚ to rank metals in order of their activity. Aim: To observe the reactivity of metals in order to determine the activity series of metals. Risk Assessment: In this investigation‚ hydrochloric acid solution is used which is toxic by all routes of
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COPPER AND COPPER ALLOYS COPPER AND COPPER ALLOYS: Copper and its alloys are widely used in many products that are used in our everyday life. They have excellent properties such as electrical and thermal conductivity good strength. They have high corrosion resistance and fatigue resistance. Copper is a non-magnetic material. Pure Copper is soft and used widely in wires and cables and is extensively used for passage of electricity. Copper is used in the building construction. Source:
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. SUMMARY OF PROPOSAL Welding is a process used to join metal parts by producing a coalescence‚ called a weld‚ at a joint. Advances in welding technology have opened the way for innovative designs in structures and machinery. Of modern welding processes‚ the greatest number fall under the general classifications of arc welding‚ gas welding and cutting‚ resistance welding‚ and brazing. Tungsten Inert Gas (TIG) welding is one of the arc welding methods. This method is suitable for many kinds
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organisms flourish they block and narrow the passage of cooling water in the ship’s system resulting in the following factors: Impairing the heat transfer system. Overheating of several water-cooled machineries. Increase in the rate of corrosion and thinning of pipes. Reduced efficiency which can lead to loss of vessel speed and loss of time. Fighting Marine Growth: To avoid formation of marine growth ‚ MGPS or Marine Growth Prevention System is used
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Applied Engineering science report. Michael Connor B00240227 Part A: Several mixtures of cement‚ aggregate‚ sand and water were mixed at different ratios to workability and compressive strength. The dry materials of the mixture were mixed and water was gradually added‚ the mixture was then placed in a cube and allowed to dry forming the concrete testing cube. Each of the four blocks containing different compositions of each material were then placed in a compressive testing machine and when
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GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS MARCH 2004 American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 Copyright 2004 American Bureau of Shipping ABS Plaza 16855 Northchase Drive Houston‚ TX 77060 USA This Page Intentionally Left Blank Foreword This Guide applies to classification of design‚ construction and installation of offshore pipelines made of metallic materials‚ as well as the periodic surveys required for maintenance
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some form that has received a thin coating of zinc oxide. The purpose of the zinc is to protect the steel from elements that normally would lead to oxidation‚ corrosion and the eventual weakening of the steel. In this sense‚ the zinc coating acts as what is called a sacrificial anode. In other words‚ the zinc will protect the steel from corrosion by acting as a barrier between the steel and the corrosive agent; at least until the zinc coating has been completely oxidized. Zinc plating involves the electrolytic
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m7 Module 7 Essay Questions 1) Describe how tooling is controlled in a part 145 maintenance organisation. Introduction Tool control within a part 145 maintenance organisation can be divided in two main areas‚ the control of company supplied tools and the individual control of their own personal tooling. Tool control is a part 145 requirement Safety Good tool control is essential to prevent any tooling from becoming a foreign object which might cause an obstruction
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Extension of strategic oil and gas acquisitions in North Sea area; Launch of more flexible price policy to compete main rivals; Threats: Environmentally unsound policies due to oil and toxic spills; Occasional refinery explosions; Corrosion in pipelines; Competition from Shell and Chevron Ceasing operations in a number of potential locations with their further re-branding (Conoco); Sale of corporate-owned stations; More than 5.000 shortages within coming months; $66
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magnesium into cold water‚ its surface will oxidise to magnesium hydroxide (Mg(OH)2)‚ and this coating will prevent further reaction. Therefore‚ in the heater meal‚ iron is added to the magnesium‚ leading to the production of a local cell – small-scale corrosion that happens where two metals of different reactivity are in contact under humid conditions – which speeds up the exothermic reaction. Because the electron potential of magnesium is lower than that of iron (the less reactive metal)‚ electrons will
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