MARL5007A - Demonstrate basic knowledge of marine control systems and automation
Assessor Resource
MARL5007A Demonstrate basic knowledge of marine control systems and automation
Assessment tool
Version 1.0 Issue Date: April 2024
This unit applies to Marine Engineering Watchkeepers on commercial vessels greater than 750 kW and forms part of the requirements for the Certificate of Competency Marine Engineer Watchkeeper issued by the Australian Maritime Safety Authority (AMSA).
This unit involves the knowledge of marine automation and process control required engineers to operate control systems on board a commercial vessel.
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:
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 basic 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 basic 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 to 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 basic principles of marine automation and process control
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
Impart knowledge and ideas through verbal, written and visual means
Read and interpret written information related to the operation of control systems on commercial vessels
Required Knowledge:
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 UMS, and automated monitoring and control of machinery
Control and monitoring of ship machinery
Control loops
Instrument process and control terms
Mechanical and electrical sensors
Pneumatic and electrical instrumentation transmitters
Principles of:
process control
basic pneumatic systems and action of pneumatic instruments
basic electronic circuits
Safety devices, alarms and monitoring systems
Sensing and transmitting elements
Tests and procedures required to meet UMS requirements
Total bridge control
Work health and safety (WHS)/occupational health and safety (OHS) legislation, policies and procedures
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.
Components may include:
Actuators
Responders
Sensors
Mediums may include:
Compressed air
Electric currents
Electric voltages
Hydraulic fluids
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
Basic concept of an automatic control system is explained using a simple block diagram, correct Australian Standard symbols and layout
Components and operation of automatic control systems are outlined
Relative advantages and disadvantages of different mediums used in shipboard automatic control systems are explained
Principle of operation of nozzle/flapper as a pneumatic control system component is outlined
Modifications required to make the simple nozzle/flapper mechanism suitable for use in process control systems are explained
Different methods of measuring level in an unpressurised tank and in a closed pressurised vessel are sketched and outlined
Applications at sea, advantages and disadvantages and temperature ranges covered of filled system thermometers are outlined
Operating principles of resistance temperature detector and thermocouple are outlined
Different methods for measuring flow on board ships that are suited to remote indication and automatic control are identified
Different methods for measuring pressure on board a ship that are suited to remote indication and automatic control are identified
Difference between ‘off-on’ control action and fully modulating proportional control action is explained
‘Offset’ and how it may be removed is explained
Basic principles of operation of a simple pneumatic controller are outlined
Action and function of hand/auto change over station in an automatic control loop is explained, using suitable schematic diagrams
Components are identified and electronic circuit diagrams are interpreted
Correct methods of testing electronic components are detailed
Basic operation of operational amplifiers is outlined
Basic concept of logic and operation of logic gates is outlined
Operation of input/output devices and their application to sequential control systems are explained
Purpose and function of a typical valve actuator and positioned is confirmed
Constructional differences between typical ‘air-to-open’ and ‘air-to-close’ actuators are confirmed
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
Pneumatic piston actuator/positioner assembly used to move final correcting elements pneumatically is outlined
Operating principles of electrical actuators are outlined
Operation of a hydraulic steering gear actuator is compared and contrasted with valve actuator and positioner assemblies
Standard specifications for cleanliness, moisture and oil content of a typical control air system are outlined
Importance of ensuring that standards for cleanliness, moisture and oil content are maintained throughout operation of control air system is explained
Typical system that is able to supply compressed air that meets required standards for cleanliness, moisture and oil content is outlined
Typical control loops associated with centralised cooling systems that serve the cooling water system are sketched
Function of typical loops required for control of temperature, pressure and viscosity of fuel supplies to main and auxiliary engines are outlined and sketched
Typical pressure and temperature control loops associated with main and auxiliary engine lubricating oil services are sketched
Function of components of typical control loops for the automatic control of boilers are outlined and sketched
Location and reasons for alarms associated with remote and/or automatic machinery operation to be separate from control function are explained
Tests and procedures required to meet unmanned machinery space (UMS) requirements are specified and different types of associated alarm and monitoring systems are evaluated
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
Engine manufacturer schematic diagram is interpreted and how Total Bridge control may be achieved to manoeuvre and control the engine is explained
Safety interlocks in sequence of operation depicted in schematic diagram are identified and why they are required is explained
Location of engine control positions, apart from the bridge, is identified from schematic diagram
Why bridge control is preferred option for manoeuvring main engine in modern commercial vessels is explained
Forms
Assessment Cover Sheet
MARL5007A - Demonstrate basic knowledge of marine control systems and automation
Assessment task 1: [title]
Student name:
Student ID:
I declare that the assessment tasks submitted for this unit are my own work.
Student signature:
Result: Competent Not yet competent
Feedback to student
Assessor name:
Signature:
Date:
Assessment Record Sheet
MARL5007A - Demonstrate basic knowledge of marine control systems and automation
Student name:
Student ID:
Assessment task 1: [title] Result: Competent Not yet competent
(add lines for each task)
Feedback to student:
Overall assessment result: Competent Not yet competent