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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 sizing and documenting layout of complex sanitary plumbing and drainage systems for applications, including residential, commercial and industrial may be for: existing structure being renovated, extended, restored or maintained new projects. |
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 integrity of the project. |
Statutory and regulatory requirements 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. |
Performance requirements 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. |
Manhole details may include: | benching requirements connections to and from flow gradient requirements inspection chambers lids open and closed channel sizing. |
Gullies can cover details such as size, location, bedding and concrete support, and also include: | boundary traps disconnector gullies (DG) overflow relief gullies (ORG). |
Calculations for complex sanitary plumbing and drainage systems may include: | determination of flow and fixture loadings gradient calculations interpretation of design charts and tables pipe sizing calculations reduced level calculations. |
Anchor blocks design elements may include: | flow forces to be resisted keying and anchorage points sizes soil characteristics. |
Pipe fixings may include: | anchors bedding bracket spacing concrete support corrosion protection cover hanging brackets material requirements saddles wall and ceiling brackets. |
Pumpwell, pump and pump control requirements may include: | automatic controls capacity chains corrosion-resistant materials detailing high and low-level water controls and alarms impeller sizing inlet and outlet design requirements installation and mounting requirements ladder access macerator requirements pump selection pump sizing pumpwell sizing space requirements step irons valve requirements warning system. |
Materials include: | cast iron concrete copper earthenware high density polyethylene (HDPE) unplasticised polyvinyl chloride (PVC-U) fittings and fixtures, including: measures to prevent the spread of fire sound attenuation requirements. |
Jointing methods may include: | brazing and threading gluing mechanical joints rubber ring solvent cement welding. |
Installation requirements include: | bedding clipping concrete support installation details jointing requirements level of workmanship. |
Rising main systems may include: | approved pressure pipe and fittings calculated rise and pump delivery requirements pump sizing to meet calculated flow conditions. |
Plans: | may include: axonometrics cross-sections details elevations isometrics schematics sections may be produced using: computer generation Indian ink pencil pigment liner. |
Specification may include: | bedding clipping concrete support and detailing specialised components jointing manholes manufacturer requirements materials workmanship. |
Testing may include: | air pressure test drainage inspection hydrostatic test quality assurance (QA) audit. |
Commissioning schedule may include: | charging traps checking leaks cleaning grates. |
Operation and maintenance manual may include: | check for blockages leak detection pump maintenance water auditing yearly inspection yearly maintenance requirements. |