Assessor Resource

Demonstrate intermediate knowledge of marine auxiliary boilers

Assessment tool

Version 1.0
Issue Date: May 2019

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).

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.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)


Not applicable.

Employability Skills

This unit contains employability skills.

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.

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.

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:

providing accurate and reliable information

providing appropriate level of detail in responses.

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:

industry-approved marine operations site where intermediate knowledge of marine auxiliary boilers can be demonstrated

diagrams, specifications and other information related to marine auxiliary boilers

technical reference library with current publications on basic marine auxiliary boilers

tools, equipment and personal protective equipment currently used in industry

relevant regulatory and equipment documentation that impacts on work activities

range of relevant exercises, case studies and/or other simulated practical and knowledge assessments

appropriate range of relevant operational situations in the workplace.

In both real and simulated environments, access is required to:

relevant and appropriate materials and equipment

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

Method of assessment

Practical assessment must occur in an:

appropriately simulated workplace environment and/or

appropriate range of situations in the workplace.

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate to this unit:

direct observation of the candidate demonstrating intermediate knowledge of marine auxiliary boilers

direct observation of the candidate applying relevant WHS/OHS requirements and work practices.

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.

Submission Requirements

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

Required Skills:

Access information related to marine auxiliary boilers

Assess own work outcomes and maintain knowledge of current codes, standards, regulations and industry practices

Explain intermediate operation of marine auxiliary boilers

Identify and apply relevant solutions for addressing problems associated with marine auxiliary boilers

Identify and interpret diagnostic information, and perform mathematical calculations related to operating, maintaining and repairing marine auxiliary boilers

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

Impart knowledge and ideas through verbal, written and visual means

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

Required Knowledge:

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

Fittings mounted on boilers

Fuel oil system for an auxiliary boiler

Hazards associated with running boiler plant

Marine boiler inspection procedures

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

Safety valves

Treatment, sampling and testing of feed and 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

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.

Marine boilers and steam plant may include:



Feed pumps



Low pressure

Medium pressure

Steam – steam generators


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
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 
Safe operating practices for all steam plant are examined and standing orders as to their operation are prepared or modified 
Procedure for establishing engine room staff who are fully conversant with safe practices for boiler operation is outlined 
Typical boiler types illustrating cross section, attachments and location of all fittings, mountings, scantlings and method of achieving circulation are examined 
Material requirements for boiler components are identified 
Construction of different types of boilers is analysed 
Different gauge glass types are compared 
Typical thermal fluid heating plant is explained and advantages and limitations of the system are identified 
Locations and functions of all fittings and safety devices in a typical thermal fluid system are explained 
Properties of thermal fluid, effects of contamination and methods of testing fluid are analysed 
Thermal fluid heating is compared to conventional steam plant 
Typical steam system layout showing location of all components on feed and heating side is detailed 
Material requirements for steam system components are identified 
Reasons for operating plant and systems at nominated temperatures and pressures, and effects of departing from these parameters are explained 
Symptoms of faults in steam traps, hot wells, de-aerators, condensers, evaporators and requirements for contamination prevention between systems, are analysed 
Procedure for shutting down, isolating and opening up a boiler for inspection or during an emergency is clarified 
Possible defects that may occur in a boiler, fire and water side, their location and effects are analysed 
Repair procedures commonly employed for damaged boilers are examined and limitations of such repairs are explained 
Procedures for leak detecting in boilers and steam equipment are clarified and remedial actions are explained 
Mechanism of economiser fires are analysed 
Procedure for detecting economiser fires, actions for controlling after occurrence and preventative measures are clarified 
Common types of boiler safety valves are analysed and sketched, and how they are classified in terms of valve lift is explained 
Materials used in safety valves are identified and operational problems that can occur are analysed 
Procedure for setting valve lift pressure is established and precautions necessary when testing valve on fired and non-fired boilers are examined 
Defects that may be found when dismantling a safety valve for survey are analysed 
Causes of scaling and corrosion of water side of a boiler and how these can be minimised are analysed 
Acceptable operational range and effects of contamination on boiler chemical reserves are identified 
Reliability of boiler water test results are analysed in relation to sampling procedure, testing equipment and shelving of test chemicals 
Different tests carried out on boiler water are explained and implications of out-of-range results are interpreted 
Use of different chemicals to treat and condition boiler water is assessed 
Procedure to be adopted when boiler is severely contaminated from different sources is outlined 
Boiler fuel system, its components and maintenance procedure are detailed 
Combustion process, its monitoring system and requirements for good combustion are analysed 
Different types of burners are compared and contrasted and how atomisation is achieved is explained 
Operation of a burner management system that incorporates pressure and level control is explained 
Protection devices, alarms and shut downs, found on firing system are identified and their method of operation is analysed 


Assessment Cover Sheet

MARL6011A - Demonstrate intermediate knowledge of marine auxiliary boilers
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I declare that the assessment tasks submitted for this unit are my own work.

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Result: Competent Not yet competent

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Assessment Record Sheet

MARL6011A - Demonstrate intermediate knowledge of marine auxiliary boilers

Student name:

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

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Feedback to student:









Overall assessment result: Competent Not yet competent

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