Unit of competency Outline

Date retreived
23/07/2026 1:16 AM AWST

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Demonstrate basic knowledge of marine diesel engines and systems

Demonstrate basic knowledge of marine diesel engines and systems

Unit of competency
National Code
MARL057
State Code
OCG50
TGA Status
Current
DTWD Status
Approved
Current Release Number
2.00
Current Release Date
20/12/2022
View on TGA
State Implementation and Classification
Approved Date
09/04/2021
Field of Education
031701 - Maritime Engineering
Original Release Date
09/04/2021
Nominal Hours
60
Description
This unit involves the skills and knowledge required to operate and maintain marine diesel engines and systems on a commercial vessel.This unit applies to people working in the maritime industry in the capacity of:Electro-Technical Officer (STCW Electro-Technical Officer Unlimited)Engineer Class 3 Near CoastalEngineer Watchkeeper (STCW Engineer Watchkeeper Unlimited). Licensing/Regulatory InformationLegislative and regulatory requirements are applicable to this unit. Regulatory requirements include STCW International Maritime Organization (IMO) model course competencies and areas of knowledge, understanding and proficiency, together with the estimated total hours required for lectures and practical exercises. Teaching staff should note that timings are suggestions only and should be adapted to suit individual groups of trainees depending on their experience, ability, equipment and staff available for training.Near Coastal Qualifications:This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as an Engineer Class 3 Near Coastal as defined in the Marine Order 505 (Certificates of competency - National Law) 2013.Blue Waters Qualifications:This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as an Electro-Technical Officer (STCW Electro-Technical Officer Unlimited) or Engineer Watchkeeper (STCW Engineer Watchkeeper Unlimited) and to meet regulatory requirements this unit must be delivered consistent with Marine Orders and with the relevant sections of the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW).
Notes
Elements and Performance Criteria
1 Outline stages of combustion in two-stroke and four-stroke cycle diesel engines
  • 1.1 Two-stroke and four-stroke cycle diesel engines are compared and contrasted
  • 1.2 Methods and diagnostic information used in determining engine combustion characteristics are specified
  • 1.3 Diagnostic information is used to identify and interpret common combustion faults and to produce typical diagrams for analysing faults
2 Explain means of pressure-charging diesel engines
  • 2.1 Pressure-charging principles and their influence on engine design and waste heat recovery are explained
  • 2.2 Different methods of pressure-charging diesel engines are clarified
  • 2.3 Emergency isolation procedures used when pressure-charging diesel engines are clarified
3 Explain operation of diesel engine governors
  • 3.1 Governing principles, common governor types and related controls are outlined
  • 3.2 Different requirements for governing diesel engines for propulsion and power generation are explained
  • 3.3 Problems of mismatched engine sizes/prime mover types when sharing common loads are outlined
4 Explain properties of materials used in construction of engine components
  • 4.1 Properties of materials used in construction of engine components are specified
  • 4.2 Dynamic stresses and loads, materials and service limitations of engine components are outlined
  • 4.3 Construction and operating cycle forces of diesel engine components are outlined
  • 4.4 Relationship between critical speed, use of detuners/dampers and materials in engine components is clarified
5 Explain safe working practices associated with diesel engines during maintenance, repair and operation
  • 5.1 Safe practices for isolating propulsion and power generation diesel engines prior to work commencement are confirmed
  • 5.2 Personal protective (PPE) to be used during all aspects of diesel maintenance is identified
  • 5.3 Hazards associated with working on diesel engines and systems, including working in enclosed spaces, are identified
  • 5.4 Correct procedures for using hydraulic tools and high-pressure fuel injection test equipment are clarified
  • 5.5 Purpose, operation and maintenance of safety interlocks and protective cut-outs of engine manoeuvring systems is determined
6 Explain procedures for preventing and responding to crankcase and air-line explosions, and scavenge and uptake fires
  • 6.1 Causes, symptoms and means of preventing and extinguishing uptake and economiser fires are outlined
  • 6.2 Risks of continued service with an isolated waste heat unit are assessed
  • 6.3 Causes, symptoms, methods of extinguishing and prevention of scavenge fires are evaluated
  • 6.4 Causes and hazards associated with starting air-line explosions are identified
  • 6.5 Protective devices fitted to air starting systems to minimise risk of explosion, and routine inspection and maintenance required are detailed
  • 6.6 Causes and ways of preventing crankcase explosions in both diesel and dual-fuel engines are outlined
  • 6.7 Procedure to be taken in the event of an early warning of a hazardous crankcase atmosphere and required procedure to be followed after engine has stopped are clarified
No information
No information
Replaces
State Code National Code Title Type
WH873 MARL006 Demonstrate basic knowledge of marine diesel engines and systems Unit of competency
State Code National Code Title Type
BFV7 MAR50120 Diploma of Marine Engineering Qualification