MARL6012A - Demonstrate intermediate knowledge of marine auxiliary machinery and systems
Assessor Resource
MARL6012A Demonstrate intermediate knowledge of marine auxiliary machinery and systems
Assessment tool
Version 1.0 Issue Date: April 2024
This unit applies to the work of a Marine Engineer Class 2 on commercial vessels greater than 3000 kW and forms part of the requirements for the Certificate of Competency Marine Engineer Class 2 issued by the Australian Maritime Safety Authority (AMSA).
This unit involves the skills and knowledge required to operate and maintain auxiliary machinery and associated 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 intermediate knowledge of marine auxiliary machinery and systems can be demonstrated
technical reference library with current publications on marine auxiliary machinery 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.
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 intermediate knowledge of marine auxiliary machinery 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, 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 operating marine auxiliary machines
Assess own work outcomes and maintain knowledge of current codes, standards, regulations and industry practices
Explain principles of marine auxiliary machines
Identify and interpret numerical and graphical information related to starting up and shutting down marine auxiliary machines on commercial vessels
Identify and suggest ways of rectifying faults and malfunctions in marine auxiliary machines on commercial vessels
Identify methods, procedures and materials needed for operating, maintaining and repairing marine auxiliary machines on commercial vessels
Impart knowledge and ideas through verbal, written and visual means
Read and interpret written information related to the operation, performance and maintenance of marine auxiliary machines, including machinery specifications, machinery design drawings, machine drawings, operational manuals, specifications, and electrical and control circuit diagrams
Required Knowledge:
Corrosion causes and prevention
Fuels and basic principles of fuel systems
MARPOL
Nature and causes of typical start up and shut down malfunctions of main and auxiliary machinery, and associated systems and available methods for their detection and rectification
Non-destructive testing procedures and standards
Operational characteristics and performance specifications for the different types of auxiliary machinery and associated systems usually found on a commercial vessel, including pumps, air compressors, steering gears, heat exchangers and evaporators
Pollution prevention regulations
Principles and procedures of machinery lubrication
Procedures for carrying out the start up and shut down of main and auxiliary machinery and associated systems to ensure compliance with company and survey requirements and regulations
Properties of metallic and non-metallic materials
Purpose and content of safety data sheets/material safety data sheets
Responsibilities of an Engineer Class 2 in relation to auxiliary machinery of a vessel
Safety, environmental and hazard control precautions and procedures relevant to start up and shut down of marine auxiliary machinery and associated systems
Types of auxiliary machinery and components
Work health and safety (WHS)/occupational health and safety (OHS) legislation and policies
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.
Auxiliary machines and systems may include:
Boiler
Cargo handling equipment
Compressors
Deck machinery
Diesel generator
Evaporators
Pumps
Refrigerating installation
Separators
Testing may include:
Density
Fuel in lubricating oil
Pour point
Viscosity
Water contamination
Corrosion prevention systems may include:
Anodes
Chemical injection
Impressed current
Marine growth inhibiting systems
Special coatings
Common faults may include:
Coolers
Filters
Rings
Valves
Components of refrigeration and air conditioning plant may include:
All fittings
Safety devices
Accessories may include:
Accessory gear
Lube oil:
coolers
pump
filter
Starting device
Arrangement of a stern tube may include:
Lubrication circuit
Shaft sealing
Tail shaft bearing
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
Commonwealth, state/territory and local legislation and regulations, which relate to auxiliary machines and systems in terms of safety, repairs and pollution, including implementation, is identified
Safe operating practices for all steam plant are examined and standing orders as to their operation are prepared or modified
Procedures for establishing engine room staff who are fully conversant with safe practices for operation and maintenance of auxiliary machines and systems are outlined
Properties of materials and how these can be determined by simple tests are explained
Common methods for non-destructive testing (NDT) and their application to auxiliary machinery and components are outlined
Common non-metallic materials used in the marine industry are assessed and their properties, applications and restrictions on usage are explained
Common metallic materials used in marine industry, their applications, failure mechanisms and methods to limit or reduce failures are assessed
Importance and implications of continual monitoring of quality of fuel oils and lubricants in efficient operation of machinery are explained
Procedures for onboard testing for fuels and lubricants are clarified
Laboratory tests that may be conducted on fuels and lubricants and how results can be interpreted and utilised as part of a maintenance program are detailed
Operation of centrifugal separators is outlined and factors that affect optimum separation are analysed
Procedures for dealing with contamination of oils by water, fuel or solid debris including recognition of dangerous levels and possible consequences, are clarified
Symptoms, causes, effects and methods of treatment of oils that have become infected by bacteria are identified
Function and operation for onboard fuel blender and alternative fuel treatments are explained
Procedure for evaluating pump or pumping system, including heat exchangers and methods of locating cause of problems that affect output and performance, is clarified
Operation of a self-priming system used on bilge, ballast or cargo pumping arrangements is explained
Different types of distillation plants used on ships are compared and contrasted taking into account operation, performance, problems and applications
Main reasons for corrosion in sea water systems and regions most affected are explained
Operation of corrosion prevention systems fitted to pumping systems is assessed
Effects of common faults on operation of single and multi stage compressors are interpreted
Reasons for and effects of high levels of oil or water in compressed air are explained
Effects of operating air compressors on synthetic lubricating oils are explained with regards to carbon formation and water contamination of the oil
Procedures for inspecting and maintaining air receivers and associated fittings are clarified
Construction, installation and operation of hydraulic steering gear is explained
Construction and operation of stabilisers is explained
Construction and operation of bow thrusters is explained
Normal alarms and safety devices fitted to steering gears for all classes of vessel are identified
Auto and manual changeover procedures are analysed in the event of faults occurring in a steering gear
Oil changing and air purging procedures for a steering gear are clarified
Fault finding procedures for steering gear are clarified
Procedures for change over to alternative systems of power or control of steering gear are clarified
Symptoms, effects and remedial action for common faults in refrigeration and air conditioning systems are assessed
Pumping down, leak test, gas charge and oil charge procedures are clarified
Functions and operation of all components of refrigeration and air conditioning plant are analysed
Correct procedures for recovery of refrigerants from refrigeration systems are implemented
International Convention for the Prevention of Pollution from Ships (MARPOL) regulations are identified and their implications for marine engineers and ship operators are explained
Operation of modern oily water separators, oil content monitors and how they comply with MARPOL regulations are explained
Operation of typical sewage plants and regulations controlling their usage are explained
Operation of incinerators, material that may legally be burned and monitoring devices is explained
Basic flow of air and gas through a simple cycle marine gas turbine is outlined
Materials and construction of compressor, combustion system and turbine in a single and two-shaft design turbine are outlined
Basic controls required for control and protection of plant are outlined
Accessories necessary for safe operation are identified
Different shafting arrangements found on vessels from main engine to propeller are outlined
Performance of different couplings and coupling bolts is assessed
Arrangement of a stern tube is completed
Procedure to mount and unmount propeller on tail shaft is clarified
Different shaft bearings, couplings, sealing and lubrication arrangements of transmission system are identified
Types of steam turbines, their location, and typical operating conditions of temperature and pressure are explained
Common operational problems associated with steam turbine plants, symptoms and effects of these problems and possible remedies are outlined
Process of warming-through and shutting down turbine plant is explained
Maintenance requirements for achieving optimum performance of an auxiliary steam turbine plant are outlined
Forms
Assessment Cover Sheet
MARL6012A - Demonstrate intermediate knowledge of marine auxiliary machinery and systems
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Assessment Record Sheet
MARL6012A - Demonstrate intermediate knowledge of marine auxiliary machinery and systems
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Assessment task 1: [title] Result: Competent Not yet competent
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