Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARL003 Mapping and Delivery Guide
Demonstrate basic knowledge of marine auxiliary boilers

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency MARL003 - Demonstrate basic knowledge of marine auxiliary boilers
Description
Employability Skills
Learning Outcomes and Application 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.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

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

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that reflect workplace conditions.

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.

Resources for assessment must include access to:

tools, equipment, machinery, materials and personal protective equipment currently used in industry

applicable documentation such as legislation, regulations, codes of practice, workplace procedures and operational manuals

range of relevant exercises, case studies and/or simulations.
Prerequisites/co-requisites
Competency Field L - Marine Engineering
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Distinguish between different types of auxiliary boilers
  • Design and use of water tube and fire tube auxiliary boilers are compared and contrasted
  • Movement of water and gas in an operating boiler is sketched
  • How variations to operating pressure and saturation temperature in an auxiliary boiler can be used to get wet, dry or superheated steam is explained
       
Element: Recognise different functions of steam and different components of steam systems
  • Key features of steam and other heating systems are compared and contrasted
  • Steam side requirements of an auxiliary steam turbo alternator are compared and contrasted with other steam-powered machinery
  • Typical steam and condensate system is outlined
       
Element: Explain fuel oil system of auxiliary boilers
  • Combustion process is explained and factors that affect combustion in a boiler are outlined
  • Differentiation is made between different burner types
  • Operation of a complete fuel oil system for an auxiliary boiler including the functions of components for automatic combustion control is outlined
       
Element: Explain procedure for operating fired and unfired boilers
  • Locations of all mountings and fittings on auxiliary boilers are identified and their functions are outlined
  • Purpose of all alarms and shut downs incorporated in auxiliary boilers is clarified
  • Types and operation of safety valves are outlined
  • Procedure for lighting off a boiler from cold is clarified
  • Procedure for laying up for short and long periods including full blow down and shut down procedures is clarified
  • Procedure for isolating an auxiliary boiler after shut down is clarified
       
Element: Explain procedure for sampling and testing boiler water
  • Effects of poor water treatment practices on safety and boiler function are identified
  • Correct procedure for taking boiler and feed water sample and possible errors that might occur are clarified
  • Common water tests carried out are outlined and typical results are stated
  • Chemicals used for treatment of boiler water are named and acceptable range of chemical reserves found in boiler waters are confirmed
       
Element: Explain procedure for maintaining water level in the boiler
  • Method of testing and changing a gauge glass is outlined
  • Effects of blockages in water, steam and drain cocks on levels in gauge glass are outlined
  • Procedure for when a gauge glass apparently shows no water is clarified
       
Element: Explain common hazards and defects and relevant prevention/ control procedures
  • Hazards and defects associated with auxiliary boilers are identified
  • How water hammer can be prevented in auxiliary boilers is outlined
  • Symptoms, causes, effects and actions to be taken in the event of oil contamination of boiler water are determined
  • Difference between and measures taken to avoid fire and water side explosions are clarified
  • Causes, mechanism, prevention and control of economiser fires are detailed
       


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.

Elements describe the essential outcomes.

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

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

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

accessing information related to marine auxiliary boilers

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

explaining basic operation of marine auxiliary boilers

identifying and applying relevant solutions for addressing problems associated with marine auxiliary boilers

identifying and interpreting diagnostic information and performing mathematical calculations related to operating, maintaining and repairing marine auxiliary boilers

identifying methods, procedures and materials needed for operating, maintaining and repairing marine auxiliary boilers

imparting knowledge and ideas through verbal, written and visual means

providing accurate and reliable information

providing appropriate level of detail in responses

reading and interpreting manuals, technical specifications, safety data sheets/material safety data sheets and manufacturer guides related to operating, maintaining and repairing marine auxiliary boilers.

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

basic principles of operation of boilers and steam systems

combustion in boilers and related safety procedures, including importance of purging a boiler and other safety precautions taken when firing a boiler

common boiler defects and repair procedures

fuel oil system for an auxiliary boiler

fittings mounted on boilers

hazards associated with running boiler plant

operating principles relating to steam generation in fired and unfired boilers

principles of boiler operation in normal and emergency situations

procedures for maintaining water level in boilers

purpose of alarms and shut downs in marine boilers

treatment, sampling and testing of boiler water

types of auxiliary boilers and typical operating pressures and temperatures

typical feed systems for marine boilers

work health and safety (WHS)/occupational health and safety (OHS) legislation, policies and procedures.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, 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.

Elements describe the essential outcomes.

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

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

Specifies different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

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

Mountings and fittings on auxiliary boilers include one or more of the following:

air release cock

auxiliary steam stop valve

blow down valve

feed check or control valve

main steam stop valve

pressure gauge connection

safety valves

sampling connection

scum valve

water level gauge

whistle stop valve

Hazards and defects include one or more of the following:

chemical hazards

enclosed space

illumination of work area

machine guarding

manual handling

materials

rubbish and combustible

steam and fuel leaks

thermal hazards

trips

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
Design and use of water tube and fire tube auxiliary boilers are compared and contrasted 
Movement of water and gas in an operating boiler is sketched 
How variations to operating pressure and saturation temperature in an auxiliary boiler can be used to get wet, dry or superheated steam is explained 
Key features of steam and other heating systems are compared and contrasted 
Steam side requirements of an auxiliary steam turbo alternator are compared and contrasted with other steam-powered machinery 
Typical steam and condensate system is outlined 
Combustion process is explained and factors that affect combustion in a boiler are outlined 
Differentiation is made between different burner types 
Operation of a complete fuel oil system for an auxiliary boiler including the functions of components for automatic combustion control is outlined 
Locations of all mountings and fittings on auxiliary boilers are identified and their functions are outlined 
Purpose of all alarms and shut downs incorporated in auxiliary boilers is clarified 
Types and operation of safety valves are outlined 
Procedure for lighting off a boiler from cold is clarified 
Procedure for laying up for short and long periods including full blow down and shut down procedures is clarified 
Procedure for isolating an auxiliary boiler after shut down is clarified 
Effects of poor water treatment practices on safety and boiler function are identified 
Correct procedure for taking boiler and feed water sample and possible errors that might occur are clarified 
Common water tests carried out are outlined and typical results are stated 
Chemicals used for treatment of boiler water are named and acceptable range of chemical reserves found in boiler waters are confirmed 
Method of testing and changing a gauge glass is outlined 
Effects of blockages in water, steam and drain cocks on levels in gauge glass are outlined 
Procedure for when a gauge glass apparently shows no water is clarified 
Hazards and defects associated with auxiliary boilers are identified 
How water hammer can be prevented in auxiliary boilers is outlined 
Symptoms, causes, effects and actions to be taken in the event of oil contamination of boiler water are determined 
Difference between and measures taken to avoid fire and water side explosions are clarified 
Causes, mechanism, prevention and control of economiser fires are detailed 

Forms

Assessment Cover Sheet

MARL003 - Demonstrate basic knowledge of marine auxiliary boilers
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

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Assessor name:

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Date:

Assessment Record Sheet

MARL003 - Demonstrate basic knowledge of marine auxiliary boilers

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

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Student signature:

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