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Evidence Guide: MARL030 - Demonstrate advanced 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

 

MARL030 - Demonstrate advanced knowledge of marine auxiliary boilers

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

Evaluate steam plant efficiency

  1. Combustion efficiency from flue gas constituents is assessed
  2. Steam and fuel consumption to obtain heating efficiency is analysed
  3. Causes of loss of steam plant efficiency are evaluated and recorded
  4. Requirements of inert gas generation of boiler plant are determined
Combustion efficiency from flue gas constituents is assessed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Steam and fuel consumption to obtain heating efficiency is analysed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes of loss of steam plant efficiency are evaluated and recorded

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Requirements of inert gas generation of boiler plant are determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Interpret complex steam plant cycles

  1. Operation, function and efficiency of dual pressure cycles and steam/steam generators are compared and contrasted
  2. Operation of dual pressure and pass in/out turbines is explained
Operation, function and efficiency of dual pressure cycles and steam/steam generators are compared and contrasted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operation of dual pressure and pass in/out turbines is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate boiler and steam plant repairs

  1. Types and properties of materials used in boilers and steam plant are identified
  2. Common component failures in boilers and steam plant are explained and reported
  3. Appropriate repairs for failed components in boilers and steam plant are determined
  4. Constraints on engineering staff engaged in repairing boilers and steam plant are explained
  5. Requirements to report defects in pressurised components of boilers are identified
Types and properties of materials used in boilers and steam plant are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Common component failures in boilers and steam plant are explained and reported

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate repairs for failed components in boilers and steam plant are determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Constraints on engineering staff engaged in repairing boilers and steam plant are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Requirements to report defects in pressurised components of boilers are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain methods of auxiliary steam plant operation and control under variable conditions

  1. Methods of steam pressure control while manoeuvring and possible adverse impacts are analysed
  2. How dew point can be reached when operating at reduced power is examined
  3. How low powers can limit steam production by exceeding pinch point is explained
Methods of steam pressure control while manoeuvring and possible adverse impacts are analysed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

How dew point can be reached when operating at reduced power is examined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

How low powers can limit steam production by exceeding pinch point is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Outline procedures surveying for boilers

  1. Procedure for preparing a boiler for survey is documented and explained
  2. Boiler inspection procedure that would cover all possible problem areas is planned
  3. Purpose and procedure for carrying out hydrostatic/hydraulic pressure tests and non destructive tests on auxiliary boilers are explained
Procedure for preparing a boiler for survey is documented and explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Boiler inspection procedure that would cover all possible problem areas is planned

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Purpose and procedure for carrying out hydrostatic/hydraulic pressure tests and non destructive tests on auxiliary boilers are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse procedures for protecting steam plant during off load conditions

  1. Procedures for decommissioning and laying up a boiler for short and long intervals are compared
  2. Processes for cleaning boilers are evaluated
  3. Procedures for re-commissioning steam plant are explained
  4. Chief Engineer responsibilities for setting lifting pressure of safety valves are outlined
Procedures for decommissioning and laying up a boiler for short and long intervals are compared

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Processes for cleaning boilers are evaluated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedures for re-commissioning steam plant are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Chief Engineer responsibilities for setting lifting pressure of safety valves are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess hazards of operating steam plant under adverse or faulty operating conditions

  1. Potential hazards of boiler operation with contaminated feed water are assessed
  2. Procedure for continuing boiler operation when contamination has exceeded acceptable limits is explained
  3. Effects of operating boiler with insufficient water level are explained and actions to be taken under loss of water conditions are identified
  4. Causes, consequences and relevant preventative measures associated with furnace explosions are analysed
  5. Operating conditions that can lead to an economiser fire and actions that can be taken to prevent and control such fires are evaluated
  6. Alternative methods for maintaining heating if a boiler or economiser has to be shut down are determined
Potential hazards of boiler operation with contaminated feed water are assessed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Procedure for continuing boiler operation when contamination has exceeded acceptable limits is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Effects of operating boiler with insufficient water level are explained and actions to be taken under loss of water conditions are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Causes, consequences and relevant preventative measures associated with furnace explosions are analysed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operating conditions that can lead to an economiser fire and actions that can be taken to prevent and control such fires are evaluated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Alternative methods for maintaining heating if a boiler or economiser has to be shut down are determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain operation and maintenance of heat transfer oil systems

  1. Operating procedures of heat transfer oil systems are explained
  2. Hazards associated with heat transfer oil systems are analysed
  3. Routine maintenance procedures associated with heat oil transfer systems are outlined
Operating procedures of heat transfer oil systems are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hazards associated with heat transfer oil systems are analysed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Routine maintenance procedures associated with heat oil transfer systems are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

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

1

Evaluate steam plant efficiency

1.1

Combustion efficiency from flue gas constituents is assessed

1.2

Steam and fuel consumption to obtain heating efficiency is analysed

1.3

Causes of loss of steam plant efficiency are evaluated and recorded

1.4

Requirements of inert gas generation of boiler plant are determined

2

Interpret complex steam plant cycles

2.1

Operation, function and efficiency of dual pressure cycles and steam/steam generators are compared and contrasted

2.2

Operation of dual pressure and pass in/out turbines is explained

3

Evaluate boiler and steam plant repairs

3.1

Types and properties of materials used in boilers and steam plant are identified

3.2

Common component failures in boilers and steam plant are explained and reported

3.3

Appropriate repairs for failed components in boilers and steam plant are determined

3.4

Constraints on engineering staff engaged in repairing boilers and steam plant are explained

3.5

Requirements to report defects in pressurised components of boilers are identified

4

Explain methods of auxiliary steam plant operation and control under variable conditions

4.1

Methods of steam pressure control while manoeuvring and possible adverse impacts are analysed

4.2

How dew point can be reached when operating at reduced power is examined

4.3

How low powers can limit steam production by exceeding pinch point is explained

5

Outline procedures surveying for boilers

5.1

Procedure for preparing a boiler for survey is documented and explained

5.2

Boiler inspection procedure that would cover all possible problem areas is planned

5.3

Purpose and procedure for carrying out hydrostatic/hydraulic pressure tests and non destructive tests on auxiliary boilers are explained

6

Analyse procedures for protecting steam plant during off load conditions

6.1

Procedures for decommissioning and laying up a boiler for short and long intervals are compared

6.2

Processes for cleaning boilers are evaluated

6.3

Procedures for re-commissioning steam plant are explained

6.4

Chief Engineer responsibilities for setting lifting pressure of safety valves are outlined

7

Assess hazards of operating steam plant under adverse or faulty operating conditions

7.1

Potential hazards of boiler operation with contaminated feed water are assessed

7.2

Procedure for continuing boiler operation when contamination has exceeded acceptable limits is explained

7.3

Effects of operating boiler with insufficient water level are explained and actions to be taken under loss of water conditions are identified

7.4

Causes, consequences and relevant preventative measures associated with furnace explosions are analysed

7.5

Operating conditions that can lead to an economiser fire and actions that can be taken to prevent and control such fires are evaluated

7.6

Alternative methods for maintaining heating if a boiler or economiser has to be shut down are determined

8

Explain operation and maintenance of heat transfer oil systems

8.1

Operating procedures of heat transfer oil systems are explained

8.2

Hazards associated with heat transfer oil systems are analysed

8.3

Routine maintenance procedures associated with heat oil transfer systems are outlined

Required Skills and Knowledge

Elements describe the essential outcomes.

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

1

Evaluate steam plant efficiency

1.1

Combustion efficiency from flue gas constituents is assessed

1.2

Steam and fuel consumption to obtain heating efficiency is analysed

1.3

Causes of loss of steam plant efficiency are evaluated and recorded

1.4

Requirements of inert gas generation of boiler plant are determined

2

Interpret complex steam plant cycles

2.1

Operation, function and efficiency of dual pressure cycles and steam/steam generators are compared and contrasted

2.2

Operation of dual pressure and pass in/out turbines is explained

3

Evaluate boiler and steam plant repairs

3.1

Types and properties of materials used in boilers and steam plant are identified

3.2

Common component failures in boilers and steam plant are explained and reported

3.3

Appropriate repairs for failed components in boilers and steam plant are determined

3.4

Constraints on engineering staff engaged in repairing boilers and steam plant are explained

3.5

Requirements to report defects in pressurised components of boilers are identified

4

Explain methods of auxiliary steam plant operation and control under variable conditions

4.1

Methods of steam pressure control while manoeuvring and possible adverse impacts are analysed

4.2

How dew point can be reached when operating at reduced power is examined

4.3

How low powers can limit steam production by exceeding pinch point is explained

5

Outline procedures surveying for boilers

5.1

Procedure for preparing a boiler for survey is documented and explained

5.2

Boiler inspection procedure that would cover all possible problem areas is planned

5.3

Purpose and procedure for carrying out hydrostatic/hydraulic pressure tests and non destructive tests on auxiliary boilers are explained

6

Analyse procedures for protecting steam plant during off load conditions

6.1

Procedures for decommissioning and laying up a boiler for short and long intervals are compared

6.2

Processes for cleaning boilers are evaluated

6.3

Procedures for re-commissioning steam plant are explained

6.4

Chief Engineer responsibilities for setting lifting pressure of safety valves are outlined

7

Assess hazards of operating steam plant under adverse or faulty operating conditions

7.1

Potential hazards of boiler operation with contaminated feed water are assessed

7.2

Procedure for continuing boiler operation when contamination has exceeded acceptable limits is explained

7.3

Effects of operating boiler with insufficient water level are explained and actions to be taken under loss of water conditions are identified

7.4

Causes, consequences and relevant preventative measures associated with furnace explosions are analysed

7.5

Operating conditions that can lead to an economiser fire and actions that can be taken to prevent and control such fires are evaluated

7.6

Alternative methods for maintaining heating if a boiler or economiser has to be shut down are determined

8

Explain operation and maintenance of heat transfer oil systems

8.1

Operating procedures of heat transfer oil systems are explained

8.2

Hazards associated with heat transfer oil systems are analysed

8.3

Routine maintenance procedures associated with heat oil transfer systems are outlined

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

accessing information related to marine auxiliary boilers

applying relevant work health and safety/occupational health and safety (WHS/OHS) requirements and work practices

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

identifying and applying relevant solutions for addressing complex problems associated with marine auxiliary boilers, such as maintaining the operation of marine auxiliary boilers under adverse conditions

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

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

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

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

basic principles of operation of boilers and steam systems

boiler and steam plant repairs

combustion efficiency

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 boilers and steam plant

of operating steam plant under adverse or faulty operating conditions

heat transfer oil systems

methods of auxiliary steam plant operation and control under variable conditions

operating principles relating to steam generation in fired and unfired boilers

operation of marine auxiliary boilers

principles of boiler operation in normal and emergency situations

procedures for:

maintaining water level in boilers

protecting steam plant during off load conditions

surveying boilers

purpose of alarms and shut downs in marine boilers

steam plant:

efficiency

cycles

types of auxiliary boilers and typical operating pressures and temperatures

typical feed systems for marine boilers

treatment, sampling and testing of boiler water

WHS/OHS requirements and work practices.

Range Statement

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

Causes of loss of steam plant efficiency include one or more of the following:

conduction-heat loss (such as fouled tubes)

high flue-gas temperature

low combustion-air supply temperature

low feed-water supply temperature

low quality fuel

operation at low or cyclic loads

poor:

combustion

controls/instrumentation

water treatment

radiant-heat loss

too much excess air (i.e. high oxygen [O2])

Boilers and steam plant include one or more of the following:

condensers

economiser

feed pumps

fired

high pressure

low pressure

medium pressure

steam – steam generators

unfired

Failures include one or more of the following :

acid dew point corrosion

caustic gouging

corrosion fatigue

distortion

erosion

fatigue

hydrogen damage

maintenance damage

material flaws

over temperature

pitting

stress:

corrosion cracking

rupture

thermal fatigue

vibration

welding flaws

Constraints include one or more of the following:

class requirements

location

reliability

time

type of materials

Safety valves include one or more of the following:

boiler drum

economiser

superheater

WHU