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Elements and Performance Criteria

  1. Evaluate steam plant efficiency
  2. Interpret complex steam plant cycles
  3. Evaluate boiler and steam plant repairs
  4. Explain methods of auxiliary steam plant operation and control under variable conditions
  5. Outline procedures surveying for boilers
  6. Analyse procedures for protecting steam plant during off load conditions
  7. Assess hazards of operating steam plant under adverse or faulty operating conditions
  8. Explain operation and maintenance of heat transfer oil systems

Required Skills

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 operation of marine auxiliary boilers and impart knowledge and ideas verbally in writing and visually

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

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

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

Read and interpret manuals technical specifications safety data sheets SDSmaterial safety data sheets MSDS and manufacturer guides related to operating repairing and maintaining marine auxiliary boilers

Required Knowledge

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

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

Work health and safety WHSoccupational health and safety OHS legislation policies and procedures

Evidence Required

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

performing accurate and reliable calculations

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

industryapproved marine operations site where advanced knowledge of marine auxiliary boilers can be demonstrated

diagrams specifications and other information required for performing advanced calculations related to marine auxiliary boilers

technical reference library with current publications on marine auxiliary boilers and steam plant

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 andor 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 andor

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 advanced knowledge of marine auxiliary boilers

direct observation of the candidate applying relevant WHSOHS 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


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.

Causes of loss of steam plant efficiency may include:

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 may include:

Condensers

Economiser

Feed pumps

Fired

High pressure

Low pressure

Medium pressure

Steam – steam generators

Unfired

Failures may include:

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 may include:

Class requirements

Location

Reliability

Time

Type of materials

Safety valves may include:

Boiler drim

Economiser

Superheater

WHU