Elements and Performance Criteria
- Distinguish between different types of auxiliary boilers
- Recognise different functions of steam and different components of steam systems
- Explain fuel oil system of auxiliary boilers
- 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
- 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
- Explain procedure for maintaining water level in the boiler
- 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