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Evidence Guide: MARL5005A - Demonstrate basic knowledge of marine auxiliary boilers

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARL5005A - Demonstrate basic knowledge of marine auxiliary boilers

What evidence can you provide to prove your understanding of each of the following citeria?

Distinguish between different types of auxiliary boilers

  1. Design and use of water tube and fire tube auxiliary boilers are compared and contrasted
  2. Movement of water and gas in an operating boiler is sketched
  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
Design and use of water tube and fire tube auxiliary boilers are compared and contrasted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Movement of water and gas in an operating boiler is sketched

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

How variations to operating pressure and saturation temperature in an auxiliary boiler can be used to get wet, dry or superheated steam is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Recognise different functions of steam and different components of steam systems

  1. Key features of steam and other heating systems are compared and contrasted
  2. Steam side requirements of an auxiliary steam turbo alternator are compared and contrasted with other steam-powered machinery
  3. Typical steam and condensate system is outlined
Key features of steam and other heating systems are compared and contrasted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Steam side requirements of an auxiliary steam turbo alternator are compared and contrasted with other steam-powered machinery

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Typical steam and condensate system is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain fuel oil system of auxiliary boilers

  1. Combustion process is explained and factors that affect combustion in a boiler are outlined
  2. Differentiation is made between different burner types
  3. Operation of a complete fuel oil system for an auxiliary boiler including the functions of components for automatic combustion control is outlined
Combustion process is explained and factors that affect combustion in a boiler are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Differentiation is made between different burner types

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operation of a complete fuel oil system for an auxiliary boiler including the functions of components for automatic combustion control is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain procedure for operating fired and unfired boilers

  1. Locations of all mountings and fittings on auxiliary boilers are identified and their functions are outlined
  2. Purpose of all alarms and shut downs incorporated in auxiliary boilers is clarified
  3. Types and operation of safety valves are outlined
  4. Procedure for lighting off a boiler from cold is clarified
  5. Procedure for laying up for short and long periods including full blow down and shut down procedures is clarified
  6. Procedure for isolating an auxiliary boiler after shut down is clarified
Locations of all mountings and fittings on auxiliary boilers are identified and their functions are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Purpose of all alarms and shut downs incorporated in auxiliary boilers is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Types and operation of safety valves are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedure for lighting off a boiler from cold is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedure for laying up for short and long periods including full blow down and shut down procedures is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedure for isolating an auxiliary boiler after shut down is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain procedure for sampling and testing boiler water

  1. Effects of poor water treatment practices on safety and boiler function are identified
  2. Correct procedure for taking boiler and feed water sample and possible errors that might occur are clarified
  3. Common water tests carried out are outlined and typical results are stated
  4. Chemicals used for treatment of boiler water are named and acceptable range of chemical reserves found in boiler waters are confirmed
Effects of poor water treatment practices on safety and boiler function are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Correct procedure for taking boiler and feed water sample and possible errors that might occur are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Common water tests carried out are outlined and typical results are stated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Chemicals used for treatment of boiler water are named and acceptable range of chemical reserves found in boiler waters are confirmed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain procedure for maintaining water level in the boiler

  1. Method of testing and changing a gauge glass is outlined
  2. Effects of blockages in water, steam and drain cocks on levels in gauge glass are outlined
  3. Procedure for when a gauge glass apparently shows no water is clarified
Method of testing and changing a gauge glass is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Effects of blockages in water, steam and drain cocks on levels in gauge glass are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedure for when a gauge glass apparently shows no water is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain common hazards and defects and relevant prevention/ control procedures

  1. Hazards and defects associated with auxiliary boilers are identified
  2. How water hammer can be prevented in auxiliary boilers is outlined
  3. Symptoms, causes, effects and actions to be taken in the event of oil contamination of boiler water are determined
  4. Difference between and measures taken to avoid, fire and water side explosions, are clarified
  5. Causes, mechanism, prevention and control of economiser fires are detailed
Hazards and defects associated with auxiliary boilers are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

How water hammer can be prevented in auxiliary boilers is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Symptoms, causes, effects and actions to be taken in the event of oil contamination of boiler water are determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Difference between and measures taken to avoid, fire and water side explosions, are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes, mechanism, prevention and control of economiser fires are detailed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

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.

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 basic knowledge of marine auxiliary boilers can be demonstrated

diagrams, specifications and other information required for performing basic calculations 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 basic 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.

Required Skills and Knowledge

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 basic 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

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

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.

Mountings and fittings on auxiliary boilers may include:

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 may include:

Chemical hazards

Enclosed space

Illumination of work area

Machine guarding

Manual handling

Materials

Rubbish and combustible

Steam and fuel leaks

Thermal hazards

Trips