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.

Method of assessment

Practical assessment must occur in an:

appropriately simulated workplace environment and/or

appropriate range of situations in the workplace.

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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Assessment task 1: [title] Result: Competent Not yet competent

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