MARL025
Demonstrate intermediate knowledge of marine auxiliary machinery and systems


Application

This unit involves the skills and knowledge required to operate and maintain marine auxiliary boilers on a commercial vessel. This includes analysing the responsibilities of an Engineer Class 2 in relation to auxiliary boiler and steam plant of a vessel, the design of marine auxiliary boilers, the operation of thermal fluid heating plants, the layout of marine stem systems and components, and procedures for inspecting marine auxiliary boilers and associated plant.

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).

No licensing, legislative or certification requirements apply to this unit at the time of publication.


Elements and Performance Criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Determine responsibilities of an Engineer Class 2 in relation to auxiliary machinery of a vessel

1.1

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

1.2

Safe operating practices for all steam plant are examined and standing orders as to their operation are prepared or modified

1.3

Procedures for establishing engine room staff who are fully conversant with safe practices for operation and maintenance of auxiliary machines and systems are outlined

2

Assess material properties and their application to engine room situations

2.1

Properties of materials and how these can be determined by simple tests are explained

2.2

Common methods for non-destructive testing (NDT) and their application to auxiliary machinery and components are outlined

2.3

Common non-metallic materials used in the marine industry are assessed and their properties, applications and restrictions on usage are explained

2.4

Common metallic materials used in marine industry, their applications, failure mechanisms and methods to limit or reduce failures are assessed

3

Outline procedure for sampling and carrying out onboard and laboratory tests on fuel and lubricants

3.1

Importance and implications of continual monitoring of quality of fuel oils and lubricants in efficient operation of machinery are explained

3.2

Procedures for onboard testing for fuels and lubricants are clarified

3.3

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

4

Explain pre-treatment of residual fuel and servicing of contaminated fuel and lubricants

4.1

Operation of centrifugal separators is outlined and factors that affect optimum separation are analysed

4.2

Procedures for dealing with contamination of oils by water, fuel or solid debris including recognition of dangerous levels and possible consequences, are clarified

4.3

Symptoms, causes, effects and methods of treatment of oils that have become infected by bacteria are identified

4.4

Function and operation for onboard fuel blender and alternative fuel treatments are explained

5

Assess operational problems with pumps and pumping systems handling sea water

5.1

Procedure for evaluating pump or pumping system, including heat exchangers and methods of locating cause of problems that affect output and performance, is clarified

5.2

Operation of a self-priming system used on bilge, ballast or cargo pumping arrangements is explained

5.3

Different types of distillation plants used on ships are compared and contrasted taking into account operation, performance, problems and applications

5.4

Main reasons for corrosion in sea water systems and regions most affected are explained

5.5

Operation of corrosion prevention systems fitted to pumping systems is assessed

6

Apply fault-finding procedures for air compressors and compressed air systems

6.1

Effects of common faults on operation of single and multi- stage compressors are interpreted

6.2

Reasons for and effects of high levels of oil or water in compressed air are explained

6.3

Effects of operating air compressors on synthetic lubricating oils are explained with regards to carbon formation and water contamination of the oil

6.4

Procedures for inspecting and maintaining air receivers and associated fittings are clarified

7

Outline construction, installation and operation of steering gears, stabilisers and bow thrusters

7.1

Construction, installation and operation of hydraulic steering gear is explained

7.2

Construction and operation of stabilisers is explained

7.3

Construction and operation of bow thrusters is explained

7.4

Normal alarms and safety devices fitted to steering gears for all classes of vessel are identified

7.5

Auto and manual changeover procedures are analysed in the event of faults occurring in a steering gear

7.6

Oil changing and air purging procedures for a steering gear are clarified

7.7

Fault finding procedures for steering gear are clarified

7.8

Procedures for change over to alternative systems of power or control of steering gear are clarified

8

Assess common faults in refrigeration and air conditioning systems

8.1

Symptoms, effects and remedial action for common faults in refrigeration and air conditioning systems are assessed

8.2

Pumping down, leak test, gas charge and oil charge procedures are clarified

8.3

Functions and operation of all components of refrigeration and air conditioning plant are analysed

8.4

Correct procedures for recovery of refrigerants from refrigeration systems are implemented

9

Outline pollution prevention regulations and operation of equipment

9.1

International Convention for the Prevention of Pollution from Ships (MARPOL) regulations are identified and their implications for marine engineers and ship operators are explained

9.2

Operation of modern oily water separators, oil content monitors and how they comply with MARPOL regulations are explained

9.3

Operation of typical sewage plants and regulations controlling their usage are explained

9.4

Operation of incinerators, material that may legally be burned and monitoring devices is explained

10

Explain basic operation of marine gas turbines

10.1

Basic flow of air and gas through a simple cycle marine gas turbine is outlined

10.2

Materials and construction of compressor, combustion system and turbine in a single and two-shaft design turbine are outlined

10.3

Basic controls required for control and protection of plant are outlined

10.4

Accessories necessary for safe operation are identified

11

Explain shafting arrangement of vessel

11.1

Different shafting arrangements found on vessels from main engine to propeller are outlined

11.2

Performance of different couplings and coupling bolts is assessed

11.3

Arrangement of a stern tube is completed

11.4

Procedure to mount and unmount propeller on tail shaft is clarified

11.5

Different shaft bearings, couplings, sealing and lubrication arrangements of transmission system are identified

12

Explain types, operation, and maintenance requirements of steam turbine machinery found in larger vessels

12.1

Types of steam turbines, their location, and typical operating conditions of temperature and pressure are explained

12.2

Common operational problems associated with steam turbine plants, symptoms and effects of these problems and possible remedies are outlined

12.3

Process of warming-through and shutting down turbine plant is explained

12.4

Maintenance requirements for achieving optimum performance of an auxiliary steam turbine plant are outlined

Evidence of Performance

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

accessing information and sketching diagrams to interpret and explain testing requirements related to operating marine auxiliary machines

applying relevant work health and safety/occupational health and safety (WHS/OHS) requirements and work practices

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

identifying and interpreting numerical and graphical information related to starting up and shutting down marine auxiliary machines on commercial vessels

identifying and suggesting ways of 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 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.


Evidence of Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

corrosion causes and prevention

fuels and basic principles of fuel systems

International Convention for the Prevention of Pollution from Ships (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

WHS/OHS legislation and policies.


Assessment Conditions

Assessors must satisfy National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) assessor requirements.

Assessment must satisfy the National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) standards.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Assessment must occur in workplace operational situations or where these are not available, in simulated workplace operational situations or an industry-approved marine operations site that replicates workplace conditions where intermediate knowledge of marine auxiliary boilers can be demonstrated.

Resources for assessment include access to:

applicable documentation including workplace procedures, regulations, codes of practice and operation manuals

diagrams, specifications and other information related to marine auxiliary boilers

technical reference library with current publications on basic marine auxiliary boilers

tools, equipment, materials and personal protective equipment currently used in industry required to operate and maintain marine auxiliary boilers.

Performance should be demonstrated consistently over time and in a suitable range of contexts.


Foundation Skills

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.


Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Auxiliary machines and systems include one or more of the following:

boiler

cargo handling equipment

compressors

deck machinery

diesel generator

evaporators

pumps

refrigerating installation

separators

Testing includes one or more of the following:

density

fuel in lubricating oil

pour point

viscosity

water contamination

Corrosion prevention systems include one or more of the following:

anodes

chemical injection

impressed current

marine growth inhibiting systems

special coatings

Components of refrigeration and air conditioning plant must include:

all fittings

safety devices

Accessories include one or more of the following:

accessory gear

lube oil:

coolers

pump

filter

starting device

Arrangement of a stern tube includes one or more of the following:

lubrication circuit

shaft sealing

tail shaft bearing


Sectors

Not applicable.


Competency Field

L – Marine Engineering