MARL6019A - Demonstrate advanced knowledge of marine control systems and automation
Assessor Resource
MARL6019A Demonstrate advanced knowledge of marine control systems and automation
Assessment tool
Version 1.0 Issue Date: April 2024
This unit applies to the work of a Marine Engineer Class 1 on commercial vessels of unlimited propulsion power and forms part of the requirements for the Certificate of Competency Marine Engineer Class 1 issued by the Australian Maritime Safety Authority (AMSA).
This unit involves the skills and knowledge required to operate control systems on board a commercial vessel. It includes basic knowledge of control theory and knowledge required to analyse the operation and performance of signal transmissions systems, electronic transmitters, final control element arrangements, electronic temperature sensors and transmitters, governors, PID electronic controllers, machinery space monitoring alarm and control systems.
It also includes knowledge of fault finding techniques for control systems, measurement and test equipment used for fault finding electronic apparatus, operational applications of analogue and digital programmable logic controllers, and procedures for programming, operating, and maintaining PLC controlled systems.
You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)
Prerequisites
Not applicable.
Employability Skills
This unit contains employability skills.
Evidence Required
List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, the required skills and knowledge, the range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the Elements, Performance Criteria, Required Skills, Required Knowledge and include:
attention to detail when completing documentation
providing accurate and reliable information
providing appropriate level of detail in responses.
Context of and specific resources for assessment
Performance is demonstrated consistently over time and in a suitable range of contexts.
Resources for assessment include access to:
industry-approved marine operations site where advanced knowledge of marine control systems and automation can be demonstrated
technical reference library with current publications on automation and process control
tools, equipment and personal protective equipment currently used in industry
relevant regulatory and equipment documentation that impacts on work activities
range of relevant exercises, case studies and/or other simulated practical and knowledge assessments
appropriate range of relevant operational situations in the workplace.
In both real and simulated environments, access is required to:
relevant and appropriate materials and equipment
applicable documentation including workplace procedures, regulations, codes of practice and operation manuals.
A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate to this unit:
direct observation of the candidate demonstrating advanced knowledge of marine control systems and automation
direct observation of the candidate applying relevant WHS/OHS requirements and work practices.
Guidance information for assessment
Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended.
In all cases where practical assessment is used it should be combined with targeted questioning to assess Required Knowledge.
Assessment processes and techniques must be appropriate to the language and literacy requirements of the work being performed and the capacity of the candidate.
Submission Requirements
List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here
Assessment task 1: [title] Due date:
(add new lines for each of the assessment tasks)
Assessment Tasks
Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.
Required Skills:
Access information and sketch diagrams, and interpret and explain testing requirements related to control systems on commercial vessels
Assess own work outcomes and maintain knowledge of current codes, standards, regulations and industry practices
Explain advance principles of marine automation and process control and impart knowledge and ideas verbally, in writing and visually
Identify and interpret numerical and graphical information, including schematic diagrams, relevant to control systems on commercial vessels
Identify and suggest ways of rectifying faults and malfunctions in control systems on commercial vessels
Identify methods, procedures and materials needed to operate and maintain control systems on commercial vessels
Read and interpret written information related to operating control systems on commercial vessels
Required Knowledge:
Analogue and digital programmable logic controllers
Australian Standards for drawing symbols/layouts for schematic diagrams
Characteristics and functions of temperature, pressure and viscosity of fuel
Concept of ‘fail safe’ philosophy
Concepts of unmanned machinery spaces (UMS), and automated monitoring and control of machinery
Control and monitoring of ship machinery
Control:
loops
theory
Electronic:
temperature sensors and transmitters
transmitters
Fault-finding techniques for control systems
Final control element arrangements
Governors
Instrument process and control terms
Machinery space monitoring alarm and control systems
Measurement and test equipment used for fault-finding electronic apparatus
Mechanical and electrical sensors
Work health and safety (WHS)/occupational health and safety (OHS) legislation, policies and procedures
PID electronic controllers
Pneumatic and electrical instrumentation transmitters
Principles of:
basic electronic circuits
basic pneumatic systems and action of pneumatic instruments
process control
Safety devices, alarms and monitoring systems
Sensing and transmitting elements
Signal transmissions systems used for monitoring, controlling and shutting down machinery
Tests and procedures required to meet UMS requirements
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below.
Methods of testing transmitter outputs may include:
MA test point
MV test point
No test points
Faults may include:
Earths
Electronic component failure
High resistance joints
Open circuits
Power supply faults
Short circuits
Governor adjustments may include:
Mismatching between prime mover types and responses
Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.
Observation Checklist
Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice
Yes
No
Comments/feedback
Time lag is distinguished from time constant
How resistance and capacitance affect control and process system response is shown
Transfer function is defined
Effect of variations in undamped natural frequency on control systems is illustrated
Methods and limitations of different signal transmissions systems are compared
Standard pneumatic system and standard analogue 4-20 mA system of signal transmission are compared and contrasted
System of a communications bus using digital signal transmission with optical and electronic systems is explained
Limitations and advantages of a communications bus system are analysed
Principles of operation of a typical 4-20 mA transmitter are explained
Application of strain gauges and changes in capacitance as sensors for pressure and differential pressure transmitters are outlined
Methods of testing transmitter outputs are explained
Application of differential pressure transmitters to liquid level sensing is analysed
Use of a differential pressure transmitter to measure flow is analysed and compared with non-restrictive electronic systems
Pneumatic, electric and hydraulic actuation are compared and contrasted
Arrangements for locking pneumatic control valves in their last position on air failure are outlined
Control valve trim characteristics are explained
Control valve selection for machinery space duties are analysed
Colour coding of tails and compensating cables for thermo couple types are identified
Temperature/mV outputs and application of common thermo couple types are illustrated
Relationship between resistance and temperature for PT100 resistance temperature device and method of testing three wire arrangements is explained
Arrangements of interfacing thermo couples and RTDs with 4-20ma systems and 1-5 volt interface cards are analysed
Principle of operation of an electronic analogue 3-term controller and how adjustments are made is explained
Open loop response and PID controller testing and calibration is demonstrated
Application of modern single loop digital controller is explained
Programming requirements for manual and auto tuning when adjusting digital controllers are demonstrated
Capacitance sensing and float level monitoring systems are compared
Single, two and three element boiler water level control systems involving feedwater and cascade systems are analysed
Requirements and systems to provide advanced combustion control systems and sequential control for burner management are outlined
Concepts and arrangements for central cooling and load dependent cooling control systems are explained
Main engine control arrangements for fixed pitch propeller and CPP systems requiring sequential control are analysed
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
Governor adjustments are demonstrated and effect of incorrect adjustments is explained
Common defects in mechanical and electronic governors are listed
Indication of faults and procedures of fault finding in 4-20mA loops are explained
Fault-finding techniques in pneumatic control systems and their respective components are analysed
Fault-finding flow diagram is illustrated
Off limit performance, fault detection and principles of rectifications for common engine room control systems are evaluated
Principles of operation of cathode ray oscilloscope are explained
Need for pulse shaping in electronics is examined
Different methods of testing common alarms systems are compared
Methods used in stabilisation, surveillance and monitoring of control power supplies are demonstrated
Governor faults are diagnosed and interpreted, identifying and evaluating appropriate adjustments and maintenance to be made
Specific governor applications requiring torque limitation, critical speed range avoidance are outlined
Typical electronic governors are explained using labelled diagrams to indicate major components and features
Governor adjustments to allow operation of propulsion and power generation diesels in both shared load and stand alone applications are specified
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
Methods of programming PLCs are assessed
Memory applications of PLCs are outlined
Input devices used with analogue PLCs are identified
Fibre optic data transmission systems are explained
Methods used for storing binary data and operating registers are explained
Procedure for identifying required control system functions are explained
Procedure for connecting PLC to system control elements is outlined
System operating procedure is outlined
Procedure for modifying system and program as necessary to provide adequate and appropriate safety requirements, is outlined
Maintenance and fault-finding procedures are outlined
Required documentation is prepared and accuracy is verified
Forms
Assessment Cover Sheet
MARL6019A - Demonstrate advanced knowledge of marine control systems and automation
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Assessment Record Sheet
MARL6019A - Demonstrate advanced knowledge of marine control systems and automation
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