Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARL5008A Mapping and Delivery Guide
Demonstrate basic knowledge of marine diesel engines and systems

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency MARL5008A - Demonstrate basic knowledge of marine diesel engines and systems
Description This unit involves the knowledge required to operate and maintain marine diesel engines and systems on a commercial vessel.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit applies to the work of 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).
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Not applicable.
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Outline stages of combustion in two-stroke and four-stroke cycle diesel engines
  • Two-stroke and four-stroke cycle diesel engines are compared and contrasted
  • Methods and diagnostic information used in determining engine combustion characteristics are specified
  • Diagnostic information is used to identify and interpret common combustion faults and to produce typical diagrams for analysing faults
       
Element: Explain means of pressure- charging diesel engines
  • Pressure-charging principles and their influence on engine design and waste heat recovery are explained
  • Different methods of pressure-charging diesel engines are clarified
  • Emergency isolation procedures used when pressure-charging diesel engines are clarified
       
Element: Explain operation of diesel engine governors
  • Governing principles, common governor types and related controls are outlined
  • Different requirements for governing diesel engines for propulsion and power generation are explained
  • Problems of mismatched engine sizes/prime mover types when sharing common loads are outlined
       
Element: Explain properties of materials used in construction of engine components
  • Properties of materials used in construction of engine components are specified
  • Dynamic stresses and loads, materials and service limitations of engine components are outlined
  • Construction and operating cycle forces of diesel engine components are outlined
  • Relationship between critical speed, use of detuners/dampers and materials in engine components is clarified
       
Element: Explain safe working practices associated with diesel engines during maintenance, repair and operation
  • Safe practices for isolating propulsion and power generation diesel engines prior to work commencement are confirmed
  • Safety protective clothing to be used during all aspects of diesel maintenance is identified
  • Hazards associated with working on diesel engines and systems including working in enclosed spaces are identified
  • Correct procedures for using hydraulic tools and high-pressure fuel injection test equipment are clarified
  • Purpose, operation and maintenance of safety interlocks and protective cut-outs of engine manoeuvring systems is determined
       
Element: Explain procedures for preventing and responding to crankcase and airline explosions, and scavenge and uptake fires
  • Causes, symptoms and means of preventing and extinguishing uptake and economiser fires are outlined
  • Risks of continued service with an isolated waste heat unit are assessed
  • Causes, symptoms, methods of extinguishing and prevention of scavenge fires are evaluated
  • Causes and hazards associated with starting airline explosions are identified
  • Protective devices fitted to air starting systems to minimise risk of explosion, and routine inspection and maintenance required are detailed
  • Causes and ways of preventing crankcase explosions in both diesel and dual-fuel engines are outlined
  • 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
       


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 diesel engines and systems can be demonstrated

diagrams, specifications and other information required for performing basic calculations related to marine diesel engines and systems

technical reference library with current publications on basic marine diesel engines and systems

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 basic knowledge of marine diesel engines and systems

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, assignment, 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 diagnostic information related to marine diesel engines and systems

Assess own work outcomes and maintain knowledge of current codes, standards, regulations and industry practices

Explain basic operation of marine diesel engines and systems, and

Identify and apply relevant solutions for addressing problems associated with marine diesel engines and systems

Identify and interpret diagnostic information, and perform mathematical calculations related to operating, maintaining and repairing marine diesel engines and systems

Identify methods, procedures and materials needed for operating, maintaining and repairing marine diesel engines and systems

Impart knowledge and ideas through verbal, written and visual means

Read and interpret manuals, technical specifications, safety data sheets/material safety data sheets and manufacturer guides related to operating, maintaining and repairing marine diesel engines and systems

Required Knowledge:

Basic principles of diesel engine operation

Components of diesel engines

Crankcase and air-line explosions, scavenge and uptake fires

Diesel engine:

lubrication systems

propulsion and power generation

Diesel engine

Manoeuvring systems of diesel engines

Pressure-charging diesel engines, including common service faults, actions to rectify faults, emergency operation and isolation procedures

Properties and characteristics of fires

Safe working practices associated with diesel engines during operation, maintenance, and repair

Starting methods of diesel engines

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.

Diagnostic information may include:

Engine efficiency

Fuel consumption

Temperature

Common combustion faults may include:

Engine cylinder fuel supply

Lack of total combustion

Methods of pressure-charging diesel engines may include:

Exhaust gas turbo charging

Positive displacement engine-driven blowers

Under-piston assistance

Diesel engine components may include:

Bedplates

Camshafts

Crankshafts

Cross-heads

Cylinder heads

Exhaust valves

Frames

Fuel injectors

Fuel pumps

Liners

Pistons

Tie-rods for two- or four-stroke engines

Turbochargers

Valves and rocket gear

Hazards may include:

Acids

Chemicals

Defective or bypassed machinery protective devices

Defective or inappropriately adjusted exhaust systems

Enclosed spaces

Flammable liquids under pressure

Hydrocarbons

Lifting heavy components both unaided and with lifting gear

Leaking oil and fuel

Causes may include:

Airlock in feed water system

Cleanliness of economiser tubes

Failure of economiser feed pump

Loss of feed-water supply

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
Two-stroke and four-stroke cycle diesel engines are compared and contrasted 
Methods and diagnostic information used in determining engine combustion characteristics are specified 
Diagnostic information is used to identify and interpret common combustion faults and to produce typical diagrams for analysing faults 
Pressure-charging principles and their influence on engine design and waste heat recovery are explained 
Different methods of pressure-charging diesel engines are clarified 
Emergency isolation procedures used when pressure-charging diesel engines are clarified 
Governing principles, common governor types and related controls are outlined 
Different requirements for governing diesel engines for propulsion and power generation are explained 
Problems of mismatched engine sizes/prime mover types when sharing common loads are outlined 
Properties of materials used in construction of engine components are specified 
Dynamic stresses and loads, materials and service limitations of engine components are outlined 
Construction and operating cycle forces of diesel engine components are outlined 
Relationship between critical speed, use of detuners/dampers and materials in engine components is clarified 
Safe practices for isolating propulsion and power generation diesel engines prior to work commencement are confirmed 
Safety protective clothing to be used during all aspects of diesel maintenance is identified 
Hazards associated with working on diesel engines and systems including working in enclosed spaces are identified 
Correct procedures for using hydraulic tools and high-pressure fuel injection test equipment are clarified 
Purpose, operation and maintenance of safety interlocks and protective cut-outs of engine manoeuvring systems is determined 
Causes, symptoms and means of preventing and extinguishing uptake and economiser fires are outlined 
Risks of continued service with an isolated waste heat unit are assessed 
Causes, symptoms, methods of extinguishing and prevention of scavenge fires are evaluated 
Causes and hazards associated with starting airline explosions are identified 
Protective devices fitted to air starting systems to minimise risk of explosion, and routine inspection and maintenance required are detailed 
Causes and ways of preventing crankcase explosions in both diesel and dual-fuel engines are outlined 
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 

Forms

Assessment Cover Sheet

MARL5008A - Demonstrate basic knowledge of marine diesel engines and systems
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I declare that the assessment tasks submitted for this unit are my own work.

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Assessment Record Sheet

MARL5008A - Demonstrate basic knowledge of marine diesel engines and systems

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

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Overall assessment result: Competent Not yet competent

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