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Evidence Guide: MARL5008A - Demonstrate basic knowledge of marine diesel engines and systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARL5008A - Demonstrate basic knowledge of marine diesel engines and systems

What evidence can you provide to prove your understanding of each of the following citeria?

Outline stages of combustion in two-stroke and four-stroke cycle diesel engines

  1. Two-stroke and four-stroke cycle diesel engines are compared and contrasted
  2. Methods and diagnostic information used in determining engine combustion characteristics are specified
  3. Diagnostic information is used to identify and interpret common combustion faults and to produce typical diagrams for analysing faults
Two-stroke and four-stroke cycle diesel engines are compared and contrasted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Methods and diagnostic information used in determining engine combustion characteristics are specified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Diagnostic information is used to identify and interpret common combustion faults and to produce typical diagrams for analysing faults

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain means of pressure- charging diesel engines

  1. Pressure-charging principles and their influence on engine design and waste heat recovery are explained
  2. Different methods of pressure-charging diesel engines are clarified
  3. Emergency isolation procedures used when pressure-charging diesel engines are clarified
Pressure-charging principles and their influence on engine design and waste heat recovery are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Different methods of pressure-charging diesel engines are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emergency isolation procedures used when pressure-charging diesel engines are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain operation of diesel engine governors

  1. Governing principles, common governor types and related controls are outlined
  2. Different requirements for governing diesel engines for propulsion and power generation are explained
  3. Problems of mismatched engine sizes/prime mover types when sharing common loads are outlined
Governing principles, common governor types and related controls are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Different requirements for governing diesel engines for propulsion and power generation are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Problems of mismatched engine sizes/prime mover types when sharing common loads are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain properties of materials used in construction of engine components

  1. Properties of materials used in construction of engine components are specified
  2. Dynamic stresses and loads, materials and service limitations of engine components are outlined
  3. Construction and operating cycle forces of diesel engine components are outlined
  4. Relationship between critical speed, use of detuners/dampers and materials in engine components is clarified
Properties of materials used in construction of engine components are specified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dynamic stresses and loads, materials and service limitations of engine components are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Construction and operating cycle forces of diesel engine components are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relationship between critical speed, use of detuners/dampers and materials in engine components is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

  1. Safe practices for isolating propulsion and power generation diesel engines prior to work commencement are confirmed
  2. Safety protective clothing to be used during all aspects of diesel maintenance is identified
  3. Hazards associated with working on diesel engines and systems including working in enclosed spaces are identified
  4. Correct procedures for using hydraulic tools and high-pressure fuel injection test equipment are clarified
  5. Purpose, operation and maintenance of safety interlocks and protective cut-outs of engine manoeuvring systems is determined
Safe practices for isolating propulsion and power generation diesel engines prior to work commencement are confirmed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Safety protective clothing to be used during all aspects of diesel maintenance is identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hazards associated with working on diesel engines and systems including working in enclosed spaces are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Correct procedures for using hydraulic tools and high-pressure fuel injection test equipment are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Purpose, operation and maintenance of safety interlocks and protective cut-outs of engine manoeuvring systems is determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain procedures for preventing and responding to crankcase and airline explosions, and scavenge and uptake fires

  1. Causes, symptoms and means of preventing and extinguishing uptake and economiser fires are outlined
  2. Risks of continued service with an isolated waste heat unit are assessed
  3. Causes, symptoms, methods of extinguishing and prevention of scavenge fires are evaluated
  4. Causes and hazards associated with starting airline explosions are identified
  5. Protective devices fitted to air starting systems to minimise risk of explosion, and routine inspection and maintenance required are detailed
  6. Causes and ways of preventing crankcase explosions in both diesel and dual-fuel engines are outlined
  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
Causes, symptoms and means of preventing and extinguishing uptake and economiser fires are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Risks of continued service with an isolated waste heat unit are assessed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes, symptoms, methods of extinguishing and prevention of scavenge fires are evaluated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes and hazards associated with starting airline explosions are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Protective devices fitted to air starting systems to minimise risk of explosion, and routine inspection and maintenance required are detailed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes and ways of preventing crankcase explosions in both diesel and dual-fuel engines are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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.

Required Skills and Knowledge

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

Range Statement

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