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. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
Scope of work must include: | barriers to heat transfer effects of air in a steam system heat transfer interpreting plans and specifications, and sizing and documenting layout of steam generation and distribution systems for residential, commercial and industrial applications for either new projects or an existing structure being renovated, extended, restored or maintained principles and properties of steam systems, including: characteristics of condensation methods of condensate removal steam applications, including commercial, manufacturing, institution and machinery and equipment operation working with types of steam and steam quality, including: dry steam flash steam properties of steam at varying pressures superheated steam wet steam. |
Design requirements may include: | architectural plans builder specifications boiler selection fire safety requirements flow requirements and sizing of pipework owner requirements pipework identification ventilation requirements. |
Cost-benefit analysis: | compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of the project may include: design styles energy costs expected design life labour costs material costs safety factors speed of installation suitable materials. |
Statutory and regulatory requirements and relevant Australian standards and codes may include: | Acts, regulations and commonwealth, state or territory, and local government requirements National Construction Code relevant Australian standards and codes. |
Manufacturer requirements may include: | material specifications recommended specific fixings for pipework sizing tables technical and trade manuals. |
Desktop study must include: | architectural and building plans developer plans documents, including: applications brochures forms other reports as available manufacturer data policies. |
Performance requirements may include: | steam generation and consumption, and steam and pressure quality, established using relevant Australian standards, codes and manufacturer information. |
Layout of pipework systems: | must include: principles of economy, serviceability, durability and fit for use location of pipework (fire rating of enclosure) should not unduly affect building integrity and aesthetic appeal. |
Fittings and valves may include: | fittings: bends couplings condensate traps steam traps steam headers steam strainers tees unions valves: isolating valves pressure relief valves. |
Pipe size calculations must include: | energy pressure sizing storage volume. |
Steam appliances: | may include: calorifiers industrial applications kitchen and laundry appliances sterilisers water heaters details must include: components construction electronic controls methods of temperature and pressure control. |
Boilers: | may include: coal electric fire tube gas oil packaged solid fuel water tube factors to be considered when selecting a boiler must include: advantages and disadvantages of boiler types capacity and size designs based on anticipated use energy sources methods of reducing heat losses pressure controls and components storage requirement calculations suitable time period between refilling valves. |
Steam circuits must include: | condensate return feed pumps feed tanks headers steam distribution water treatment. |
Steam trap types and their operation: | types, which may include: mechanical thermodynamic thermostatic other applicable types operation, which must include: installation location. |
Steam injection must include: | noise control open ended pipe proprietary sparge pipe. |
Insulation: | may include: fibreglass rock wool insulation protection, including: plastic sheet metal. |
Pipe supports may include: | anchors bracket spacing corrosion protection hanging brackets manufacturer-recommended specific fixings material requirements provision for expansion. |
Materials may include: | copper steel other approved materials. |
Jointing methods may include: | brazing mechanical joints threading welding. |
Installation requirements may include: | pipe protection: cover corrosion impact fire rating level of workmanship manufacturer-recommended specific fixings pipe support provision for expansion provision for drainage of condensation serviceability and access. |
Designed may include: | cost relating to performance, including: milestones standard procedures standards of work work schedules prescriptive designs, including detail relating to: materials and quality of work nominated subcontractors provision of on-site facilities and site access quality assurance. |
Sustainability principles and concepts: | cover the current and future social, economic and environmental use of resources may include: selecting appropriate material to ensure minimal environmental impact efficient energy usage water usage efficient use and recycling of material disposing of waste material to ensure minimal environmental impact. |
Plans: | may include: axonometrics cross-sections details elevations isometrics schematics sections may be produced using: computer generation drawing equipment. |
Specification may include: | boiler selection fire safety flow requirements jointing manufacturer requirements materials residual pressures specialised components support testing valve selection workmanship work health and safety (WHS). |
Testing may include: | defect inspection flow inspection checklist leak pressure performance quality assurance (QA) audit. |
Commissioning schedule may include: | boiler check for foreign material containment leak check operation pump system certification system defects system functions as per design treatment system. |
Operation and maintenance manual may include: | as installed drawings certification documentation maintenance schedules manufacturer brochures and technical information system operational procedures regular water quality testing results of commissioning test. |