The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!
From the Wiki University
What evidence can you provide to prove your understanding of each of the following citeria?
Analyse methods of improving plant efficiency
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Increase in Rankine efficiency of plant by increasing the pressure and temperature is analysed Completed |
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How regenerative feed heating and steam reheating increases overall plant efficiency is shown on an enthalpy/entropy diagram Completed |
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Efficiency calculations and performance evaluation for boilers, turbines, feed systems and total plant are performed Completed |
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Analyse changes in feed system that occur during fluctuating loads
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Changes that occur during fluctuating loads are identified, detailing how make up to system and dump from system are performed Completed |
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Condenser level control methods, how condenser is supported and how expansion stresses are avoided are explained Completed |
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Loss of efficiency when heat transfer rate is interrupted is explained Completed |
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Test procedure to identify leaks in a condenser is created Completed |
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Types, features, common defects and maintenance requirements of two-stage and super cavitating extraction pumps are compared and contrasted Completed |
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Effects of air leaks in feed system and ineffective air removal in air ejector are explained Completed |
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Operation of a vacuum pump for air removal from a condenser is explained Completed |
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Operation of a turbo feed pump differential pressure governor taking into account constant pressure, increasing pressure and decreasing pressure differential governing is explained Completed |
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Alarms, shutdowns, automatic cut-in arrangements and testing of over speed trips for a boiler feed pump are outlined Completed |
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Analyse design and construction of high-pressure water tube boilers and ancillary equipment
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Temperature load relationships and temperature control of superheater are analysed Completed |
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Operation of superheater with parallel, contra and cross flow of gas/steam flow is predicted Completed |
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Correct material for high temperature operation of superheater tubes and headers is identified Completed |
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Tube fixing and support arrangements for superheater elements are explained Completed |
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Burner tip design and operation for steam atomising oil burners are compared Completed |
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Features of a three-element water level control system and relationship with burner management system are outlined Completed |
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Operation of a combustion control system fitted with cross limits on air and fuel is explained Completed |
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Analyse operation, maintenance and performance of high-pressure water tube boilers and ancillary equipment
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Warm through procedure and checks to be carried out before connecting boiler to range are explained Completed |
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How boiler is laid up for short and/or long periods is explained Completed |
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Actions required after oil or salt water contamination are detailed Completed |
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Chemical cleaning procedure to remove scale and oil deposits from internal surfaces of a boiler is explained Completed |
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Tube failures are identified and suitable methods of repair are selected Completed |
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Defects that can occur in economisers and how they can be repaired are listed Completed |
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Maintenance inspection procedures to prevent superheater and economise fires are produced Completed |
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Procedure to combat soot and steam/iron fires in generating banks, superheaters and economisers is outlined Completed |
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Coordinate and congruent feed water treatment is illustrated on a caustic/phosphate graph Completed |
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Different feedwater tests, procedure for each test and appropriate chemical treatments are explained Completed |
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Program for an internal and external survey of a water tube boiler is compiled, defects that may be found and repair methods that will enable boiler to be returned to service are listed Completed |
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Procedure for setting lift, adjusting blow-down of safety valves and carrying out an accumulation test on a boiler is outlined Completed |
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Operation, desired temperature range and correct cleaning and maintenance requirements for tube and regenerative air heaters are detailed Completed |
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Preparation and procedure for conducting hydraulic testing of a high pressure water tube boiler is explained Completed |
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Analyse turbine operation, maintenance and performance
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Relationship between sequential nozzle operation and bar lift in steam turbines is explained Completed |
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Principle of operation of different trips and cut-outs is explained Completed |
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Differentiation is made between resonance and critical speed, and their effect on the turbine operation is explained Completed |
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Types of turbine vibration and where each type is found in a turbine is analysed Completed |
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System torsional vibration and effect of operating at critical speeds and in-built design elements required to avoid critical speeds are explained Completed |
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Back pressure and self-condensing turbo alternators are compared Completed |
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Governor system is explained Completed |
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Turbine control systems are explained Completed |
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Procedure for opening up turbine for survey, routine checks of blades, casings, rotors, bearings, glands, drains and the reassembly of turbine is explained Completed |
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Procedure for straightening a bowed turbine rotor is outlined Completed |
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Evaluate turbine-gearing performance
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Single and double reduction gearing systems are compared and contrasted Completed |
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Features and applications of double helical involute gear teeth are outlined Completed |
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Advantages and disadvantages of single and double locked train gearboxes are analysed Completed |
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Construction and reason for installing flexible couplings in gearing system is explained Completed |
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Features, functions and applications of star, planetary and solar epicyclic gearing are compared and contrasted Completed |
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Space savings resulting from use of epicyclic gearing are analysed Completed |
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