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?
Outline basic actions and functions of automation equipment in marine contexts
|
|
Basic concept of an automatic control system is explained using a simple block diagram, correct Australian Standard symbols and layout Completed |
Evidence:
|
Components and operation of automatic control systems are outlined Completed |
Evidence:
|
Relative advantages and disadvantages of different mediums used in shipboard automatic control systems are explained Completed |
Evidence:
|
Explain action of nozzle flapper mechanism in pneumatic instruments
|
|
Principle of operation of nozzle/flapper as a pneumatic control system component is outlined Completed |
Evidence:
|
Modifications required to make the simple nozzle/flapper mechanism suitable for use in process control systems are explained Completed |
Evidence:
|
Explain operating principles and application of sensing and transmitting elements
|
|
Different methods of measuring level in an unpressurised tank and in a closed pressurised vessel are sketched and outlined Completed |
Evidence:
|
Applications at sea, advantages and disadvantages and temperature ranges covered of filled system thermometers are outlined Completed |
Evidence:
|
Operating principles of resistance temperature detector and thermocouple are outlined Completed |
Evidence:
|
Different methods for measuring flow on board ships that are suited to remote indication and automatic control are identified Completed |
Evidence:
|
Different methods for measuring pressure on board a ship that are suited to remote indication and automatic control are identified Completed |
Evidence:
|
Explain function of controller element and associated hand/auto changeover station in an analogue control loop
|
|
Difference between ‘off-on’ control action and fully modulating proportional control action is explained Completed |
Evidence:
|
‘Offset’ and how it may be removed is explained Completed |
Evidence:
|
Basic principles of operation of a simple pneumatic controller are outlined Completed |
Evidence:
|
Action and function of hand/auto change over station in an automatic control loop is explained, using suitable schematic diagrams Completed |
Evidence:
|
Explain basic operating principles of electronic circuits and components
|
|
Components are identified and electronic circuit diagrams are interpreted Completed |
Evidence:
|
Correct methods of testing electronic components are detailed Completed |
Evidence:
|
Basic operation of operational amplifiers is outlined Completed |
Evidence:
|
Explain use of solid state diodes and transistors to control monitoring and alarm systems
|
|
Basic concept of logic and operation of logic gates is outlined Completed |
Evidence:
|
Operation of input/output devices and their application to sequential control systems are explained Completed |
Evidence:
|
Explain ‘fail safe’ philosophy and its implications for design and operation of main types of actuators available for operating final correcting elements
|
|
Purpose and function of a typical valve actuator and positioned is confirmed Completed |
Evidence:
|
Constructional differences between typical ‘air-to-open’ and ‘air-to-close’ actuators are confirmed Completed |
Evidence:
|
Why ‘fail safe’ may mean valves could either close, open, or remain where they are, upon failure of their associated automatic (or servo remote) operating system is clarified Completed |
Evidence:
|
Pneumatic piston actuator/positioner assembly used to move final correcting elements pneumatically is outlined Completed |
Evidence:
|
Operating principles of electrical actuators are outlined Completed |
Evidence:
|
Operation of a hydraulic steering gear actuator is compared and contrasted with valve actuator and positioner assemblies Completed |
Evidence:
|
Specify requirements for a pneumatic control system air supply
|
|
Standard specifications for cleanliness, moisture and oil content of a typical control air system are outlined Completed |
Evidence:
|
Importance of ensuring that standards for cleanliness, moisture and oil content are maintained throughout operation of control air system is explained Completed |
Evidence:
|
Typical system that is able to supply compressed air that meets required standards for cleanliness, moisture and oil content is outlined Completed |
Evidence:
|
Explain mechanisms for control of physical parameters in a ship’s machinery space
|
|
Typical control loops associated with centralised cooling systems that serve the cooling water system are sketched Completed |
Evidence:
|
Function of typical loops required for control of temperature, pressure and viscosity of fuel supplies to main and auxiliary engines are outlined and sketched Completed |
Evidence:
|
Typical pressure and temperature control loops associated with main and auxiliary engine lubricating oil services are sketched Completed |
Evidence:
|
Function of components of typical control loops for the automatic control of boilers are outlined and sketched Completed |
Evidence:
|
Location and reasons for alarms associated with remote and/or automatic machinery operation to be separate from control function are explained Completed |
Evidence:
|
Tests and procedures required to meet unmanned machinery space (UMS) requirements are specified and different types of associated alarm and monitoring systems are evaluated Completed |
Evidence:
|
Power output and control of a main propulsion diesel engine (slow speed two-stroke) and an electrical generator prime mover (high or medium speed four-stroke) are compared and contrasted Completed |
Evidence:
|
Explain schematically total bridge control of a commercial vessel
|
|
Engine manufacturer schematic diagram is interpreted and how Total Bridge control may be achieved to manoeuvre and control the engine is explained Completed |
Evidence:
|
Safety interlocks in sequence of operation depicted in schematic diagram are identified and why they are required is explained Completed |
Evidence:
|
Location of engine control positions, apart from the bridge, is identified from schematic diagram Completed |
Evidence:
|
Why bridge control is preferred option for manoeuvring main engine in modern commercial vessels is explained Completed |
Evidence:
|