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?
Evaluate diesel fuel systems
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Why atomisation and penetration of fuel and air turbulence are essential to optimum combustion is explained Completed |
Evidence:
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Typical injection pressures and viscosities for different grades of fuel are documented and compared Completed |
Evidence:
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Design modifications of pumps, camshafts and injectors for fuel types are outlined Completed |
Evidence:
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Difference between constant and variable injection fuel pump timing, showing materials, principal parts, method of operation and adjustments of common pump types is compared and explained Completed |
Evidence:
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Injection requirements for slow speed and high speed diesel engines are compared, including pilot injection and pre-combustion chambers Completed |
Evidence:
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Common service faults, symptoms and causes of diesel fuel injection problems are identified, specifying appropriate adjustments, including methods of fuel pump timing Completed |
Evidence:
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Work health and safety/occupational health and safety (WHS/OHS) requirements for handling and testing fuel injection systems are explained Completed |
Evidence:
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Normal operating pressures and temperatures for fuel valve cooling arrangements, and uni-fuel and dual-fuel systems, including both high/medium viscosity fuel types are explained Completed |
Evidence:
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Evaluate different methods of diesel engine cooling
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Importance of maintaining diesel engine thermal efficiency and evaluate thermal loads on engine components is outlined Completed |
Evidence:
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Cooling media selection is justified, and advantages and disadvantages of different diesel cooling methods are outlined Completed |
Evidence:
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Appropriate action to be taken with common faults in cooling systems is explained and different cooling water treatments are compared Completed |
Evidence:
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How cooling systems are commissioned, stored during idle periods and restored after contamination is confirmed Completed |
Evidence:
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Methods of load-dependent cooling of diesel alternators on heavy fuels are evaluated Completed |
Evidence:
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Normal operation temperatures, pressures, and methods of cooling medium and slow speed diesel engine pistons, exhaust valves, cylinders, turbochargers and cylinder heads are identified Completed |
Evidence:
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Evaluate diesel engine lubrication requirements
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Principles of engine lubrication are outlined Completed |
Evidence:
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Lubricant types, physical and chemical properties and applications are assessed Completed |
Evidence:
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Sources of diesel lubricant contamination and deterioration are identified Completed |
Evidence:
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Ways of testing for diesel lubricant contamination and deterioration, interpreting test results and identifying appropriate action to be taken are outlined Completed |
Evidence:
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Distribution of lubricating oil to guides, top-end, bottom-end and main bearings of diesel engines, showing direction of flow, typical clearances and stating normal operating temperatures and pressure is explained Completed |
Evidence:
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Principles of bearing lubrication are outlined Completed |
Evidence:
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Materials used in bearing construction are identified Completed |
Evidence:
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Bearing faults are evaluated and remedies to prevent them from occurring are determined Completed |
Evidence:
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Compare different propulsion, manoeuvring and starting methods
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Starting procedures of diesel engines for power generation, propulsion, and emergency use are clarified Completed |
Evidence:
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Starting and manoeuvring requirements/sequences for direct-coupled reversible and geared propulsion diesels, including CPP applications are explained Completed |
Evidence:
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Common faults are analysed and appropriate action to be taken with typical diesel starting and manoeuvring systems is identified Completed |
Evidence:
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Manoeuvring and reversing systems of propulsion diesel engines are outlined Completed |
Evidence:
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Different methods of achieving reversing capability with direct-coupled propulsion diesels are compared Completed |
Evidence:
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Layout of a diesel-electric drive is compared and contrasted with the layout of a turbo electric drive Completed |
Evidence:
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Analyse materials used in constructing diesel engines
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Common materials used in diesel engine construction are assessed, selection is justified, and typical compositions and physical properties of components are specified Completed |
Evidence:
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Dynamic stresses and loads are interpreted, service limitations are identified and different methods of component fabrication are evaluated Completed |
Evidence:
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Two-stroke and four-stroke operating cycle forces, couples and moments, relating to design principles of crankshafts, bedplates, foundations and crossheads are outlined Completed |
Evidence:
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Out-of-balance gas and inertia forces, couples and moments are related to flywheels, balance weights and first/second order balancing Completed |
Evidence:
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Factors contributing to torsional vibration are explained and methods of minimising or eliminating harmful effects of critical speeds are clarified Completed |
Evidence:
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Pistons, liners, piston rings, bearings and crankshafts are calibrated to identify wear patterns, limits and means of correction Completed |
Evidence:
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Alignment and adjustment criteria of crankshafts, chain-drives, integral thrust bearings and crossheads are specified Completed |
Evidence:
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Specified working clearances and limits of all bearings, sliding surfaces and interference fits of typical diesel engines are compiled using engine builder manuals Completed |
Evidence:
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Explain uptake and scavenge fires and air line, gearbox and crankcase explosions
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Design and operational factors that contribute to fires in waste heat units are explained and methods of extinguishing and/or containing soot and hydrogen fires are specified Completed |
Evidence:
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Routine cleaning procedures, inspection criteria, symptoms of fire and risks of isolation in service associated with waste heat units are identified Completed |
Evidence:
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Operational factors that contribute to scavenge fires are identified, symptoms are outlined, methods of extinguishing are evaluated and routine inspection criteria of scavenge spaces are stated Completed |
Evidence:
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Principles of explosive mixtures are clarified and how a starting airline explosion can occur is explained Completed |
Evidence:
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How risk of scavenge fires may be minimised in service by protective devices and routine evaluation of starting air systems is clarified Completed |
Evidence:
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Causes of gearbox and crankcase explosions in propulsion and auxiliary drives are outlined Completed |
Evidence:
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How risks of gearbox and crankcase explosions may be minimised in service are explained and correct procedures to be taken in the event of warning of a hazardous atmosphere in both oil and dual-fuel engines are clarified Completed |
Evidence:
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Operating principles of an oil-mist detector, crankcase breather and explosion relief doors are explained Completed |
Evidence:
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Function of a piston rod scraper box is outlined, and causes of wear and appropriate adjustments are identified Completed |
Evidence:
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Explain correct working practices associated with diesel engine operation, maintenance and repair
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Safe working practices associated with isolating main and propulsion diesels under all emergency and routine situations are explained, including use of protective devices, interlocks and evaluation of their status Completed |
Evidence:
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Safe working practices associated with working in crankcases and other enclosed spaces are explained Completed |
Evidence:
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Safe working practices associated with safe handling of hydraulic tools and dangers of lifting/isolating heavy components both unaided and with lifting gear are explained Completed |
Evidence:
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Hazards of working with flammable liquids under pressure, chemicals, acids and hydrocarbons as well as selection criteria for appropriate protective clothing are explained Completed |
Evidence:
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Safe working strategies for diesel engine maintenance are planned using engine manufacturer instruction manuals and product data safety sheets Completed |
Evidence:
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Analyse faults using combustion diagnostic equipment
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Two-stroke and four-stroke theoretical cycle diagrams are compared with results recorded using diagnostic tools Completed |
Evidence:
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Combustion faults from typical diagrams are evaluated and corrective adjustments are specified Completed |
Evidence:
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Service combustion values are compared with trials or test bed figures Completed |
Evidence:
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Common faults associated with pressure charging and fuel injection systems are outlined Completed |
Evidence:
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Methods of pressure charging diesel engines are compared, and materials of construction, design features, operational maintenance and emergency procedures are correctly identified Completed |
Evidence:
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Causes of efficiency loss and surge are explained Completed |
Evidence:
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Scavenging systems and gas/air flow paths through a turbocharger, under normal and emergency operation modes are explained using relevant diagrams Completed |
Evidence:
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Analyse construction and operation of marine gas turbines
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Flow of air and gas through a simple cycle marine gas turbine is analysed Completed |
Evidence:
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Materials and construction of compressor, combustion system and turbine in single and two shaft designs are outlined Completed |
Evidence:
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Controls required for control and protection of marine gas turbines are detailed Completed |
Evidence:
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Function of accessories necessary for safe operation of marine gas turbines are explained Completed |
Evidence:
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