Unit of competency Outline

Date retreived
22/07/2026 11:31 AM AWST

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Demonstrate basic knowledge of marine auxiliary boilers

Demonstrate basic knowledge of marine auxiliary boilers

Unit of competency
National Code
MARL003
State Code
WH870
TGA Status
Replaced
DTWD Status
Transition (Replaced)
Current Release Number
1.00
Current Release Date
07/10/2013
View on TGA
State Implementation and Classification
Approved Date
04/02/2014
Field of Education
031701 - Maritime Engineering
Original Release Date
04/02/2014
Nominal Hours
40
Description
This unit involves the knowledge required to operate and maintain marine auxiliary boilers on a commercial vessel.This unit applies to people working in the maritime industry as a Marine Engineering Watchkeeper on commercial vessels greater than 750 kW or as an Engineer Class 3 Near Coastal.This unit has links to legislative and certification requirements.
Notes
Elements and Performance Criteria
1 Distinguish between different types of auxiliary boilers
  • 1.1 Design and use of water tube and fire tube auxiliary boilers are compared and contrasted
  • 1.2 Movement of water and gas in an operating boiler is sketched
  • 1.3 How variations to operating pressure and saturation temperature in an auxiliary boiler can be used to get wet, dry or superheated steam is explained
2 Recognise different functions of steam and different components of steam systems
  • 2.1 Key features of steam and other heating systems are compared and contrasted
  • 2.2 Steam side requirements of an auxiliary steam turbo alternator are compared and contrasted with other steam-powered machinery
  • 2.3 Typical steam and condensate system is outlined
3 Explain fuel oil system of auxiliary boilers
  • 3.1 Combustion process is explained and factors that affect combustion in a boiler are outlined
  • 3.2 Differentiation is made between different burner types
  • 3.3 Operation of a complete fuel oil system for an auxiliary boiler including the functions of components for automatic combustion control is outlined
4 Explain procedure for operating fired and unfired boilers
  • 4.1 Locations of all mountings and fittings on auxiliary boilers are identified and their functions are outlined
  • 4.2 Purpose of all alarms and shut downs incorporated in auxiliary boilers is clarified
  • 4.3 Types and operation of safety valves are outlined
  • 4.4 Procedure for lighting off a boiler from cold is clarified
  • 4.5 Procedure for laying up for short and long periods including full blow down and shut down procedures is clarified
  • 4.6 Procedure for isolating an auxiliary boiler after shut down is clarified
5 Explain procedure for sampling and testing boiler water
  • 5.1 Effects of poor water treatment practices on safety and boiler function are identified
  • 5.2 Correct procedure for taking boiler and feed water sample and possible errors that might occur are clarified
  • 5.3 Common water tests carried out are outlined and typical results are stated
  • 5.4 Chemicals used for treatment of boiler water are named and acceptable range of chemical reserves found in boiler waters are confirmed
6 Explain procedure for maintaining water level in the boiler
  • 6.1 Method of testing and changing a gauge glass is outlined
  • 6.2 Effects of blockages in water, steam and drain cocks on levels in gauge glass are outlined
  • 6.3 Procedure for when a gauge glass apparently shows no water is clarified
7 Explain common hazards and defects and relevant prevention/ control procedures
  • 7.1 Hazards and defects associated with auxiliary boilers are identified
  • 7.2 How water hammer can be prevented in auxiliary boilers is outlined
  • 7.3 Symptoms, causes, effects and actions to be taken in the event of oil contamination of boiler water are determined
  • 7.4 Difference between and measures taken to avoid fire and water side explosions are clarified
  • 7.5 Causes, mechanism, prevention and control of economiser fires are detailed
No information
No information
Replaces
State Code National Code Title Type
WG463 MARL5005A Demonstrate basic knowledge of marine auxiliary boilers Unit of competency
Replaced By
State Code National Code Title Type
OCH14 MARL054 Demonstrate basic knowledge of marine auxiliary boilers Unit of competency