Unit of competency Outline

Date retreived
22/07/2026 11:58 PM AWST

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Demonstrate intermediate knowledge of marine control systems and automation

Demonstrate intermediate knowledge of marine control systems and automation

Unit of competency
National Code
MARL026
State Code
AUG22
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
27/02/2015
View on TGA
State Implementation and Classification
Approved Date
28/08/2015
Field of Education
031701 - Maritime Engineering
Original Release Date
28/08/2015
Nominal Hours
60
Description
This unit involves the skills and knowledge required to operate control systems on board a commercial vessel.This unit applies to the work of a Marine Engineer Class 2 on commercial vessels greater than 3000 kW and forms part of the requirements for the Certificate of Competency Marine Engineer Class 2 issued by the Australian Maritime Safety Authority (AMSA).No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1 Analyse open and closed loop systems
  • 1.1 Open loop systems are distinguished from closed loop systems
  • 1.2 Closed loop manual, time based automatic open loop and feed forward open loop are explained
2 Explain principles and operation of pneumatic control element and systems
  • 2.1 Operation of a nozzle flapper and pneumatic amplifier unit is analysed and applied to transmitters, basic controllers and valve positioners
  • 2.2 Control air supply system is defined
  • 2.3 Principle of operation of direct and reverse acting pneumatic relays and application is clarified
  • 2.4 Application of computing relays is analysed
3 Compare temperature transmitters
  • 3.1 Pneumatic temperature transmitter is defined
  • 3.2 Effect of changes in ambient temperature on thermocouples and resistance temperature detectors (RTD) is explained
  • 3.3 Testing procedures and methods of simulation for both RTDs and thermocouples are explained
  • 3.4 Characteristics and application of thermistors are outlined
4 Analyse application of differential pressuretransmitters
  • 4.1 Application of differential pressure transmitters on board ships is confirmed
  • 4.2 Arrangements of differential pressure transmitters for measurement of liquid levels in both closed and open tanks are explained
  • 4.3 Mechanics for viscosity measurement using a differential pressure transmitter are analysed
  • 4.4 Principle of using a differential pressure transmitter for flow measurement and the need for a square root extractor is explained
  • 4.5 Use of a differential pressure transmitter for flow measurement is compared and contrasted with other types of meters
5 Explain engine room monitoring systems
  • 5.1 Application of different speed sensing systems is analysed
  • 5.2 Operating principles of torque monitoring systems applied to propeller shafting are explained
  • 5.3 Arrangements of shaft power and indicated power monitoring are compared
  • 5.4 Horizontal and vertical float level systems are compared with other tank level monitoring system in common use
  • 5.5 Operating principle of oil-water interface sensor is explained
  • 5.6 Methods of bearing temperature monitoring applied to diesel engine rotating parts are outlined
  • 5.7 Machinery space monitoring and alarm system from a central control room are outlined
6 Explain procedure for transmitter calibration
  • 6.1 Procedure for transmitter calibration for both pneumatic and electronic transmitters is applied
  • 6.2 Test equipment is used for transmitter calibration
  • 6.3 Relationship between process variables and output signals is demonstrated in a graph
  • 6.4 Effects of transmitter dead band are defined
7 Explain operation of pneumatic 3 term controller and controller adjustment procedures
  • 7.1 Common controller actions and applications are outlined
  • 7.2 Operating principle of pneumatic 3 term controllers is outlined
  • 7.3 Procedure for adjusting 3 term pneumatic controllers is applied and effects if incorrectly adjustment are explained
  • 7.4 Typical controller settings for a PID controller are detailed
  • 7.5 Integrated hand/auto station and 3 term controller are outlined and bumpless transfer is demonstrated
8 Explain actuators and control valves
  • 8.1 Arrangements to provide fail safe requirements are outlined
  • 8.2 Control valve and actuator are explained
  • 8.3 Different types of actuators are identified
  • 8.4 Operating principle of pneumatic valve positioners is explained
9 Analyse operation of hydraulic governors
  • 9.1 Operating principle of proportional action hydraulic governors is explained
  • 9.2 Importance of spring stiffness in relation to response is clarified
  • 9.3 Purpose of an isochronous governor is outlined
  • 9.4 Principle of operation of an isochronous hydraulic governor is outlined
  • 9.5 Governor droop and its requirements for stable load sharing and engine stability is explained
10 Interpret electronic systems circuit diagrams
  • 10.1 Electrical symbols commonly used in electronic circuits and sub-circuits are defined
  • 10.2 Printed and colour codes used in electronic circuits are defined
  • 10.3 Operation and maintenance manuals commonly used in the fault finding electronic circuits are used correctly
11 Explain basic operation of programmable logic controllers
  • 11.1 Principles and operation of integrated circuit gates are explained
  • 11.2 Operational function of input/output devices connected to a digital programmable logic controller is detailed
  • 11.3 Methods of operation of flip flops, adders, counters, multiplexers and decoders are outlined
  • 11.4 Methods employed when changing set point values in a digital programmable logic controller are outlined
12 Explain typical machinery space control loops and unmanned machinery spaces requirements
  • 12.1 Fuel oil heating, LO cooling and JW cooling loop showing cascade and split range systems are outlined
  • 12.2 Fuel oil viscosity control loop is outlined
  • 12.3 Common methods of boiler water control and simple combustion control with burner management for an auxiliary boiler are outlined
  • 12.4 Requirements and system arrangements for bridge control of main propulsion machinery including change over from local to bridge are explained
  • 12.5 Common pressure control loops found in a ship’s engine room are identified
  • 12.6 Unmanned machinery spaces (UMS) requirements are outlined
  • 12.7 Troubleshooting procedures associated with control systems are outlined
  • 12.8 Procedures for software version control are outlined
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State Code National Code Title Type
AVQ3 MAR60115 Advanced Diploma of Maritime Operations (Marine Engineering Class 2) Qualification