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?
Explain control theory
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Time lag is distinguished from time constant Completed |
Evidence:
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Effect resistance and capacitance has on process system response is demonstrated Completed |
Evidence:
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Transfer function is established and defined Completed |
Evidence:
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Effect of variations in undamped natural frequency on control systems is illustrated Completed |
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Analyse signal transmissions systems used for monitoring, controlling and shutting down machinery
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Methods and limitations of different signal transmissions systems are compared Completed |
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Standard pneumatic system and standard analogue 4-20 mA system of signal transmission are compared and contrasted Completed |
Evidence:
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System of a communications bus using digital signal transmission with optical and electronic systems is explained Completed |
Evidence:
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Limitations and advantages of a communications bus system are analysed Completed |
Evidence:
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Analyse electronic transmitters
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Principles of operation of a typical 4-20 mA transmitter are explained Completed |
Evidence:
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Application of strain gauges and changes in capacitance as sensors for pressure and differential pressure transmitters are outlined Completed |
Evidence:
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Methods of testing transmitter outputs are recorded explained Completed |
Evidence:
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Application of differential pressure transmitters to liquid level sensing is analysed Completed |
Evidence:
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Use of a differential pressure transmitter to measure flow is analysed and compared with non-restrictive electronic systems Completed |
Evidence:
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Evaluate final control element arrangements
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Pneumatic, electric and hydraulic actuation are compared and contrasted Completed |
Evidence:
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Arrangements for locking pneumatic control valves in their last position on air failure are outlined Completed |
Evidence:
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Control valve trim characteristics are explained Completed |
Evidence:
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Control valve selection for machinery space duties are analysed Completed |
Evidence:
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Evaluate electronic temperature sensors and transmitters
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Colour coding of tails and compensating cables for thermo couple types are identified Completed |
Evidence:
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Temperature/mV outputs and application of common thermo couple types are illustrated Completed |
Evidence:
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Relationship between resistance and temperature for PT100 resistance temperature device and method of testing three wire arrangements is explained Completed |
Evidence:
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Arrangements of interfacing thermo couples and RTDs with 4-20ma systems and 1-5 volt interface cards are analysed Completed |
Evidence:
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Analyse PID electronic controllers
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Principle of operation of an electronic analogue 3-term controller and how adjustments are made is explained Completed |
Evidence:
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Open loop response and PID controller testing and calibration is demonstrated Completed |
Evidence:
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Application of modern single loop digital controller is explained Completed |
Evidence:
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Programming requirements for manual and auto tuning when adjusting digital controllers are demonstrated Completed |
Evidence:
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Evaluate performance of machinery space monitoring alarm and control systems
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Capacitance sensing and float level monitoring systems are compared Completed |
Evidence:
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Single, two and three element boiler water level control systems involving feedwater and cascade systems are analysed Completed |
Evidence:
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Requirements and systems to provide advanced combustion control systems and sequential control for burner management are outlined Completed |
Evidence:
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Concepts and arrangements for central cooling and load dependent cooling control systems are explained Completed |
Evidence:
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Main engine control arrangements for fixed pitch propeller and CPP systems requiring sequential control are analysed Completed |
Evidence:
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Tests and procedures to meet UMS requirements are explained, and alarm and monitoring systems involving data loggers, alarm print outers, and trend analysis are evaluated Completed |
Evidence:
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Explain fault-finding techniques for control systems
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Governor adjustments are demonstrated and effect of incorrect adjustments is explained Completed |
Evidence:
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Common defects in mechanical and electronic governors are itemised Completed |
Evidence:
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Indication of faults and procedures of fault finding in 4-20mA loops are explained Completed |
Evidence:
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Fault-finding techniques in pneumatic control systems and their respective components are analysed Completed |
Evidence:
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Fault-finding flow diagram is illustrated Completed |
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Off limit performance, fault detection and principles of rectifications for common engine room control systems are evaluated Completed |
Evidence:
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Analyse measurement and test equipment used for fault-finding electronic apparatus
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Principles of operation of cathode ray oscilloscope are explained Completed |
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Need for pulse shaping in electronics is examined Completed |
Evidence:
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Different methods of testing common alarms systems are compared Completed |
Evidence:
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Methods used in stabilisation, surveillance and monitoring of control power supplies are demonstrated Completed |
Evidence:
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Analyse governors
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Governor faults are diagnosed and interpreted, identifying and evaluating appropriate adjustments and maintenance to be made Completed |
Evidence:
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Specific governor applications requiring torque limitation, critical speed range avoidance are outlined Completed |
Evidence:
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Typical electronic governors are explained using labelled diagrams to indicate major components and features Completed |
Evidence:
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Governor adjustments to allow operation of propulsion and power generation diesels in both shared load and standalone applications are specified Completed |
Evidence:
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Response of a diesel engine governor on change in engine load using both feedback and feed forward control is explained using labelled diagrams to indicate major components and adjustments Completed |
Evidence:
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Explain operational applications of analogue and digital programmable logic controllers (PLC)
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Methods of programming PLCs are assessed Completed |
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Memory applications of PLCs are outlined Completed |
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Input devices used with analogue PLCs are identified Completed |
Evidence:
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Fibre optic data transmission systems are explained Completed |
Evidence:
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Methods used for storing binary data and operating registers are explained Completed |
Evidence:
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Document procedures for programming, operating and maintaining PLC controlled systems
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Procedure for identifying required control system functions are explained Completed |
Evidence:
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Procedure for connecting PLC to system control elements is outlined Completed |
Evidence:
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System operating procedure is outlined Completed |
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Procedure for modifying system and program as necessary to provide adequate and appropriate safety requirements, is outlined Completed |
Evidence:
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Maintenance and fault-finding procedures are outlined Completed |
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Required documentation is prepared and accuracy is verified Completed |
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