MARL048 — Demonstrate advanced knowledge of marine auxiliary machinery and systems

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What an assessment for MARL048 must cover

110 assessable components: 14 elements (71 performance criteria), 9 performance evidence and 30 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Evaluate ship systems

1.1Conventional systems are analysed from ship layout drawings and performance data
1.2Viability and potential problems of new systems and advanced specialist vessels are evaluated
1.3Performance of different pumps and heat exchangers is assessed, and their applications are compared for different purposes
1.4Performance of shipboard pollution control equipment is evaluated

2 Assess materials failure

2.1Type of materials failure that impact on marine auxiliary components is analysed, including metallic and non-metallic
2.2Ideal properties of materials required for components of auxiliary machinery are analysed
2.3Repair methods used for auxiliary machines and constraints on engineering staff engaged in repairing auxiliary machinery are analysed
2.4Type and purpose of destructive and non-destructive testing of materials are compared

3 Analyse lubrication

3.1Mechanism of lubrication between two surfaces is explained
3.2Factors influencing good lubrication are identified and evaluated
3.3Different types of lubrication applied to marine machinery are compared and contrasted
3.4Relative advantages of synthetic lubricants and mineral oils are assessed
3.5Methods of assuring quality of lubrication are identified
3.6Procedures for onboard testing for fuels and lubricants are clarified
3.7Laboratory 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

4 Analyse fuel and lubricating oil contaminants

4.1Symptoms, effects and possible remedial actions for different types of contaminants in fuel are evaluated
4.2Types of contaminants that affect lubricants and remedial actions required for different forms of contamination are identified, including bacterial infections
4.3Methods used to counter poor quality fuels and to improve properties of lubricating oils are assessed
4.4Safety measures to be applied when fuels are found to be outside class requirements are identified
4.5Operation of centrifugal separators is outlined and factors that affect optimum separation are analysed
4.6Procedures for dealing with contamination of oils by water, fuel or solid debris, including recognition of dangerous levels and possible consequences, are determined

5 Analyse shafting systems, bearings, couplings, clutches and shaft seals that form transmission system

5.1Different types and methods of checking alignment and wear of shafting, shaft bearings and thrust blocks are identified
5.2Assembly and dismantling procedures for muff and flange type couplings are compared and contrasted
5.3Different types, methods of operation and maintenance requirements of clutches are compared
5.4Different types, maintenance requirements and operation of stern tubes, tail shaft seals and stern bearing lubrication systems under adverse conditions are evaluated
5.5Mounting and unmounting propeller to tail shaft is clarified

6 Analyse steering gears and controllable pitch propeller (CPP) systems

6.1Regulatory requirements for steering gears of different types of vessels are identified
6.2Operation of various types of steering gear arrangements are analysed
6.3Operation and performance of CPP and fixed pitch systems are compared and contrasted
6.4Modes of operation of CPP systems are explained
6.5Effects and countermeasures, in the event of failure in the control system or seals of a CPP system, are identified
6.6Construction, installation and operation of hydraulic gear, stabilisers and bow thrusters are identified
6.7Normal alarms and safety devices fitted to steering gears for all classes of vessels are identified, including analysis of auto and manual changeover procedures
6.8Construction, installation and operation of hydraulic steering gear is explained
6.9Construction and operation of stabilisers is explained
6.10Construction and operation of bow thrusters is explained

7 Analyse marine transmission systems

7.1Operation and performance of different marine transmission systems are compared and contrasted
7.2Procedure for inspecting a set of reduction gears from a propulsion system is analysed
7.3Types and locations of faults that may occur in gearing systems and repair options available are analysed

8 Analyse marine air compressors

8.1Procedures for assessing performance of reciprocating and rotary compressors by output and condition monitoring techniques are explained
8.2Effects of multi-staging, inter-cooling and clearance volume are explained
8.3Importance of all fittings and safety devices in compressed air system is explained
8.4Full automatic operation of starting air compressors is explained
8.5Air receivers are inspected and maintained

9 Evaluate shipboard refrigeration and air conditioning (RAC) systems

9.1Principle of air conditioning systems is explained and how ideal conditions are achieved in air conditioned space is analysed
9.2Automatic operation of a typical marine provision fridge plant capable of maintaining different temperatures in different cold rooms is analysed
9.3Hazards associated with chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), and regulations controlling their production and usage are analysed
9.4Procedures for evacuation and recovery of refrigerants from the system are outlined
9.5Symptoms, effects and remedial action for common faults in RAC systems are assessed

10 Evaluate operation of inert gas systems on crude oil tankers

10.1Location and functions of all components, fittings and safety devices in an inert gas system are identified
10.2Operation of a typical inert gas system found on crude oil tankers is analysed
10.3Operation and maintenance requirements of inert gas systems are explained

11 Evaluate plant efficiency and relate problems in a turbo alternator

11.1Operating parameters and associated protections for turbo alternator systems are analysed
11.2Procedure for assessing efficiency of auxiliary steam turbines is explained by analysing measured parameters
11.3Methods of steam and air leak detection in turbo alternator systems are compared
11.4Effects of fouling of condenser and changes in sea water temperature in turbo alternator systems are analysed
11.5Process of warming-through and shutting down turbine plant is explained
11.6Maintenance requirements for achieving optimum performance of an auxiliary steam turbine plant are outlined

12 Assess operational problems with pumps and pumping systems handling sea water

12.1Procedure for evaluating pump or pumping system, including heat exchangers and methods of locating cause of problems that affect output and performance, is clarified
12.2Operation of a self-priming system used on bilge, ballast or cargo pumping arrangements is explained
12.3Different types of distillation plants used on ships are compared and contrasted taking into account operation, performance, problems and applications
12.4Main reasons for corrosion in seawater systems and regions most affected are explained
12.5Operation of corrosion prevention systems fitted to pumping systems is assessed

13 Outline pollution prevention regulations and operation of equipment

13.1International Convention for the Prevention of Pollution from Ships (MARPOL) regulations are identified and their implications for Engineers and ship operators are explained
13.2Operation of modern oily water separators, oil content monitors and how they comply with MARPOL regulations are explained
13.3Operation of typical sewage plants and regulations controlling their usage are explained
13.4Operation of incinerators, material that may legally be burned and monitoring devices is explained

14 Explain basic operation of marine gas turbines

14.1Basic flow of air and gas through a simple cycle marine gas turbine is outlined
14.2Materials and construction of compressor, combustion system and turbine in a single and two-shaft design turbine are outlined
14.3Basic controls required for control and protection of plant are outlined
14.4Accessories necessary for safe operation are identified

Performance evidence

accessing information and sketch diagrams to interpret and explain testing requirements related to the operation of marine auxiliary machines
applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and work practices
assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices
explaining principles of marine auxiliary machines
identifying and interpreting complex numerical and graphical information related to operating, maintaining and repairing marine auxiliary machines on commercial vessels
identifying and rectifying faults and malfunctions in marine auxiliary machines on commercial vessels
identifying methods, procedures and materials needed for operating, maintaining and repairing marine auxiliary machines on commercial vessels
imparting knowledge and ideas through verbal, written and visual means
reading and interpreting complex 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.

Knowledge evidence

auxiliary machinery, including: boiler, compressors, deck machinery, diesel generator, evaporators, pumps, refrigerating installation, separators, turbo alternators
components of refrigeration and air conditioning (RAC), including: all fittings, safety devices
constraints, including: class requirements, location, reliability, time
corrosion prevention systems, including: anodes, chemical injection, impressed current, marine growth inhibiting systems, special coatings
design features and operative mechanism of marine gas turbine and associated auxiliaries, including: material selection and design features of gas turbines
factors influencing good lubrication, including: alignment, condition of bearing surfaces, flow rate, load, purity of lubricant, running clearances, speed, temperature, viscosity
fuel testing, including: density, fuel in lubricating oil, pour point, viscosity, water contamination
fuel and lubricating oil contaminants, including: air entrainment, incompatible fluids, moisture, particulate
fuels and principles of fuel systems
inert gas systems
International Convention for the Prevention of Pollution from Ships (MARPOL)
lube oil, including: coolers, filter, pump
marine air compressors and compressed air systems
marine transmission systems
materials failure, including non-destructive testing procedures and standards
nature and causes of typical start-up and shutdown malfunctions of main and auxiliary machinery and associated systems, and available methods for their detection and rectification
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
plant efficiency
principles and procedures of machinery lubrication
procedures for carrying out start-up and shutdown 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
protections, including: axial displacement, condenser condition, electrical, expansion, high air temperature, high oil temperature, loss of vacuum, low oil pressure, mechanical, overspeed, pressure, steam, steam condition, temperature, vibration
purpose and content of safety data sheets (SDS)/material safety data sheets (MSDS)
shafting systems, bearings, couplings, clutches and shaft seals and stern tubes that form the transmission system
ship systems
shipboard RAC systems
steering gears and controllable pitch propeller (CPP) systems
turbo alternators
types of auxiliary machinery and components
WHS/OHS legislation and policies

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing MARL048

What does an assessment tool for MARL048 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MARL048 needs to address all 110 unit components: 14 elements with 71 performance criteria, 9 performance evidence requirements, 30 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MARL048?

Auditori pulls the current release of MARL048 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MARL048 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MARL048 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MARL048, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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