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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: | includes interpretation of plans and specifications includes sizing and documenting layout of complex cold water systems for applications including residential, commercial and industrial may be for new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements may include: | architectural specifications builder specifications owner requirements specialist water use applications. |
Cost-benefit analysis may include: | comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising the integrity of the project. |
Statutory and regulatory requirements may include: | Acts and regulations local and state government policies. |
Australian and New Zealand standards may include: | AS/NZS3500 National plumbing and drainage set: Parts 1.1 and 1.2 AS2200 Design charts for water supply and sewerage Building Code of Australia. |
Manufacturer requirements may include: | material specifications pump tables sizing tables technical and trade manuals. |
Desktop study can include collection and interpretation of existing data for design purposes from: | architectural and building plans council plans developer plans other documents and reports as available. |
Flow and pressure tests include: | on-site measurement of flow (l and s), velocity (m and s) and pressure (kPa) interpretation of flow and pressure tests conducted by a contractor. |
Performance requirements may include: | flow, velocity, pressure and discharge requirements, established using Australian and New Zealand standards and local authority plans. |
Layout of pipework systems may include: | dual feed ring main single pipe. |
Fittings and valves may include: | fittings: bends elbows tees unions valves: backflow prevention excess pressure isolating pressure limiting pressure reduction strainers. |
Backflow prevention devices may include: | break tanks property and individual protection testable and non-testable devices zone protection. |
Flush valve system types may include: | backflow prevention requirements gravity mains pressure pipe sizing requirements storage requirements. |
Cold water system components cover: | meter assemblies, including: direct and indirect electronic inferential magnetic thrust blocks and their design elements, including: design details for tees, elbows, valves and meter assemblies keying and anchorage points sizes soil characteristics velocity and flow forces to be resisted pipe fixings, including: anchors bedding bracket spacing corrosion protection cover hanging brackets material requirements saddles wall and ceiling brackets water storage systems, including: automatic controls inlet valve design and sizing outlet sizing overflow requirements safe tray requirements tank sizes. |
Pump, pump controls and pumproom requirements may include: | automatic controls impeller sizing inlet and outlet design requirements installation and mounting requirements pump selection pump sizing space requirements valve requirements. |
Materials include: | acrilonitrile butadiene styrene (ABS) composite pipework copper cross-linked polyethylene fittings and fixtures polybutylene protective coatings steel. |
Jointing methods may include: | brazing compression flaring mechanical joints rubber ring joints screwing soldering. |
Installation requirements include: | bedding clipping installation details jointing requirements level of workmanship. |
Delivery systems may include: | constant flow variable speed pumps downfeed hydropneumatic pressure ratio upfeed. |
Plans include: | axonometrics cross-sections details elevations isometrics schematics sections. |
Specification may include: | bedding clipping jointing manufacturer materials specialised components valve selection workmanship. |
Testing may include: | air pressure test defect inspection hydrostatic test mains pressure test quality assurance (QA) audit. |
Commissioning schedule may include: | flow test leak check pressure test system purge valve operation. |
Operation and maintenance manual may include: | leak detection pump maintenance valve maintenance water auditing yearly inspection yearly maintenance requirements. |