Modification History
Release 1
This is the first release of this unit.
Unit Descriptor
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, design of marine auxiliary boilers, operation of thermal fluid heating plants, layout of marine stem systems and components, and procedures for inspecting marine auxiliary boilers and associated plant.
Application of the Unit
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).
Licensing/Regulatory Information
Not applicable.
Pre-Requisites
Not applicable.
Employability Skills Information
This unit contains employability skills.
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the required performance needed to demonstrate achievement of the element. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
1 |
Outline responsibilities of an Engineer Class 2 in relation to auxiliary boiler and steam plant of a vessel |
1.1 |
Commonwealth, state/territory and local legislation and regulations that relate to marine boilers and steam plant 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 |
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1.3 |
Procedure for establishing engine room staff who are fully conversant with safe practices for boiler operation is outlined |
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2 |
Evaluate design and construction of marine auxiliary boilers |
2.1 |
Typical boiler types illustrating cross section, attachments and location of all fittings, mountings, scantlings and method of achieving circulation are examined |
2.2 |
Material requirements for boiler components are identified |
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2.3 |
Construction of different types of boilers is analysed |
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2.4 |
Different gauge glass types are compared |
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3 |
Evaluate design and operation of thermal fluid heating plants |
3.1 |
Typical thermal fluid heating plant is explained and advantages and limitations of the system are identified |
3.2 |
Locations and functions of all fittings and safety devices in a typical thermal fluid system are explained |
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3.3 |
Properties of thermal fluid, effects of contamination and methods of testing fluid are analysed |
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3.4 |
Thermal fluid heating is compared to conventional steam plant |
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4 |
Evaluate layout and design of marine steam systems and components |
4.1 |
Typical steam system layout showing location of all components on feed and heating side is detailed |
4.2 |
Material requirements for steam system components are identified |
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4.3 |
Reasons for operating plant and systems at nominated temperatures and pressures, and effects of departing from these parameters are explained |
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4.4 |
Symptoms of faults in steam traps, hot wells, de-aerators, condensers, evaporators and requirements for contamination prevention between systems, are analysed |
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5 |
Outline procedure for inspecting marine auxiliary boilers and associated plant |
5.1 |
Procedure for shutting down, isolating and opening up a boiler for inspection or during an emergency is clarified |
5.2 |
Possible defects that may occur in a boiler, fire and water side, their location and effects are analysed |
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5.3 |
Repair procedures commonly employed for damaged boilers are examined and limitations of such repairs are explained |
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5.4 |
Procedures for leak detecting in boilers and steam equipment are clarified and remedial actions are explained |
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5.5 |
Mechanism of economiser fires are analysed |
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5.6 |
Procedure for detecting economiser fires, actions for controlling after occurrence and preventative measures are clarified |
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6 |
Differentiate between safety valves types |
6.1 |
Common types of boiler safety valves are analysed and sketched, and how they are classified in terms of valve lift is explained |
6.2 |
Materials used in safety valves are identified and operational problems that can occur are analysed |
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6.3 |
Procedure for setting valve lift pressure is established and precautions necessary when testing valve on fired and non-fired boilers are examined |
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6.4 |
Defects that may be found when dismantling a safety valve for survey are analysed |
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7 |
Evaluate problems associated with feed and boiler water |
7.1 |
Causes of scaling and corrosion of water side of a boiler and how these can be minimised are analysed |
7.2 |
Acceptable operational range and effects of contamination on boiler chemical reserves are identified |
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7.3 |
Reliability of boiler water test results are analysed in relation to sampling procedure, testing equipment and shelving of test chemicals |
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7.4 |
Different tests carried out on boiler water are explained and implications of out-of-range results are interpreted |
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7.5 |
Use of different chemicals to treat and condition boiler water is assessed |
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7.6 |
Procedure to be adopted when boiler is severely contaminated from different sources is outlined |
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8 |
Evaluate marine fuel systems |
8.1 |
Boiler fuel system, its components and maintenance procedure are detailed |
8.2 |
Combustion process, its monitoring system and requirements for good combustion are analysed |
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8.3 |
Different types of burners are compared and contrasted and how atomisation is achieved is explained |
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8.4 |
Operation of a burner management system that incorporates pressure and level control is explained |
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8.5 |
Protection devices, alarms and shut downs, found on firing system are identified and their method of operation is analysed |
Required Skills and Knowledge
This section describes the skills and knowledge required for this unit. |
Required Skills: |
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Required Knowledge: |
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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. |
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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:
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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:
In both real and simulated environments, access is required to:
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Method of assessment |
Practical assessment must occur in an:
A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate to this unit:
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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. |
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. |
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Marine boilers and steam plant may include: |
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Unit Sector(s)
Not applicable.
Competency Field
Marine Engineering