Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 | Evaluate diesel fuel systems | 1.1 | Why atomisation and penetration of fuel and air turbulence are essential to optimum combustion is explained |
1.2 | Typical injection pressures and viscosities for different grades of fuel are documented and compared |
1.3 | Design modifications of pumps, camshafts and injectors for fuel types are outlined |
1.4 | 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 |
1.5 | Injection requirements for slow speed and high speed diesel engines are compared, including pilot injection and pre-combustion chambers |
1.6 | Common service faults, symptoms and causes of diesel fuel injection problems are identified, specifying appropriate adjustments, including methods of fuel pump timing |
1.7 | Work health and safety/occupational health and safety (WHS/OHS) requirements for handling and testing fuel injection systems are explained |
1.8 | 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 |
2 | Evaluate different methods of diesel engine cooling | 2.1 | Importance of maintaining diesel engine thermal efficiency and evaluate thermal loads on engine components is outlined |
2.2 | Cooling media selection is justified, and advantages and disadvantages of different diesel cooling methods are outlined |
2.3 | Appropriate action to be taken with common faults in cooling systems is explained and different cooling water treatments are compared |
2.4 | How cooling systems are commissioned, stored during idle periods and restored after contamination is confirmed |
2.5 | Methods of load-dependent cooling of diesel alternators on heavy fuels are evaluated |
2.6 | Normal operation temperatures, pressures, and methods of cooling medium and slow speed diesel engine pistons, exhaust valves, cylinders, turbochargers and cylinder heads are identified |
3 | Evaluate diesel engine lubrication requirements | 3.1 | Principles of engine lubrication are outlined |
3.2 | Lubricant types, physical and chemical properties and applications are assessed |
3.3 | Sources of diesel lubricant contamination and deterioration are identified |
3.4 | Ways of testing for diesel lubricant contamination and deterioration, interpreting test results and identifying appropriate action to be taken are outlined |
3.5 | 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 |
3.6 | Principles of bearing lubrication are outlined |
3.7 | Materials used in bearing construction are identified |
3.8 | Bearing faults are evaluated and remedies to prevent them from occurring are determined |
4 | Compare different propulsion, manoeuvring and starting methods | 4.1 | Starting procedures of diesel engines for power generation, propulsion, and emergency use are clarified |
4.2 | Starting and manoeuvring requirements/sequences for direct-coupled reversible and geared propulsion diesels, including CPP applications are explained |
4.3 | Common faults are analysed and appropriate action to be taken with typical diesel starting and manoeuvring systems is identified |
4.4 | Manoeuvring and reversing systems of propulsion diesel engines are outlined |
4.5 | Different methods of achieving reversing capability with direct-coupled propulsion diesels are compared |
4.6 | Layout of a diesel-electric drive is compared and contrasted with the layout of a turbo electric drive |
5 | Analyse materials used in constructing diesel engines | 5.1 | Common materials used in diesel engine construction are assessed, selection is justified, and typical compositions and physical properties of components are specified |
5.2 | Dynamic stresses and loads are interpreted, service limitations are identified and different methods of component fabrication are evaluated |
5.3 | Two-stroke and four-stroke operating cycle forces, couples and moments, relating to design principles of crankshafts, bedplates, foundations and crossheads are outlined |
5.4 | Out-of-balance gas and inertia forces, couples and moments are related to flywheels, balance weights and first/second order balancing |
5.5 | Factors contributing to torsional vibration are explained and methods of minimising or eliminating harmful effects of critical speeds are clarified |
5.6 | Pistons, liners, piston rings, bearings and crankshafts are calibrated to identify wear patterns, limits and means of correction |
5.7 | Alignment and adjustment criteria of crankshafts, chain-drives, integral thrust bearings and crossheads are specified |
5.8 | Specified working clearances and limits of all bearings, sliding surfaces and interference fits of typical diesel engines are compiled using engine builder manuals |
6 | Explain uptake and scavenge fires and air line, gearbox and crankcase explosions | 6.1 | 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 |
6.2 | Routine cleaning procedures, inspection criteria, symptoms of fire and risks of isolation in service associated with waste heat units are identified |
6.3 | 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 |
6.4 | Principles of explosive mixtures are clarified and how a starting airline explosion can occur is explained |
6.5 | How risk of scavenge fires may be minimised in service by protective devices and routine evaluation of starting air systems is clarified |
6.6 | Causes of gearbox and crankcase explosions in propulsion and auxiliary drives are outlined |
6.7 | 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 |
6.8 | Operating principles of an oil-mist detector, crankcase breather and explosion relief doors are explained |
6.9 | Function of a piston rod scraper box is outlined, and causes of wear and appropriate adjustments are identified |
7 | Explain correct working practices associated with diesel engine operation, maintenance and repair | 7.1 | 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 |
7.2 | Safe working practices associated with working in crankcases and other enclosed spaces are explained |
7.3 | 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 |
7.4 | Hazards of working with flammable liquids under pressure, chemicals, acids and hydrocarbons as well as selection criteria for appropriate protective clothing are explained |
7.5 | Safe working strategies for diesel engine maintenance are planned using engine manufacturer instruction manuals and product data safety sheets |
8 | Analyse faults using combustion diagnostic equipment | 8.1 | Two-stroke and four-stroke theoretical cycle diagrams are compared with results recorded using diagnostic tools |
8.2 | Combustion faults from typical diagrams are evaluated and corrective adjustments are specified |
8.3 | Service combustion values are compared with trials or test bed figures |
8.4 | Common faults associated with pressure charging and fuel injection systems are outlined |
8.5 | Methods of pressure charging diesel engines are compared, and materials of construction, design features, operational maintenance and emergency procedures are correctly identified |
8.6 | Causes of efficiency loss and surge are explained |
8.7 | Scavenging systems and gas/air flow paths through a turbocharger, under normal and emergency operation modes are explained using relevant diagrams |
9 | Analyse construction and operation of marine gas turbines | 9.1 | Flow of air and gas through a simple cycle marine gas turbine is analysed |
9.2 | Materials and construction of compressor, combustion system and turbine in single and two shaft designs are outlined |
9.3 | Controls required for control and protection of marine gas turbines are detailed |
9.4 | Function of accessories necessary for safe operation of marine gas turbines are explained |