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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, and sizing and documenting layout of trade waste systems, for residential, commercial and industrial applications for either new projects or existing structures being renovated, extended, restored or maintained. |
Design requirements include: | architectural specifications builder specifications owner requirements specialist water use applications. |
Statutory and regulatory requirements and Australian and New Zealand standards include: | Acts, regulations and local and state government policies, including group and strata titling AS/NZS3500 National plumbing and drainage set AS2200 Design charts for water supply and sewerage Building Code of Australia local government trade waste policies. |
Trade waste applications include: | chemical facilities commercial and industrial facilities that produce a liquid waste stream food preparation facilities photography development facilities wash-down facilities. |
Cost-benefit analysis includes: | comparison of the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project. |
Manufacturer requirements include: | material specifications pump tables sizing tables technical and trade manuals. |
Desktop study includes collection and interpretation of existing data for design purposes from: | architectural and building plans council plans developer plans manufacturers' data other documents, including: applications forms sewer detail maps other reports as available. |
Performance requirements include: | pipe grades, cover, flow conditions and discharge requirements, established using Australian and New Zealand standards and local authority plans. |
Layout of pipework systems: | includes: gravity systems pumped systems should not unduly affect building integrity and aesthetic appeal should have principles of economy, serviceability, durability and fit for use applied. |
Fittings and valves include: | bends inspection openings junctions reflux valves traps. |
Solid removal systems include removal of: | bone dirt grit metal paper plastic rubbish sand silt wood other solid contaminants. |
Grease and oil interceptors include: | coalescing plate separators grease traps skimmers vertical separators. |
Neutralising chambers include: | acid neutralisation chemical neutralisation. |
Wash-down areas include: | bin wash down commercial and industrial wash-down processes that may or may not require stormwater diversion floor wash down machinery wash down. |
Diffused air flotation systems include: | removal of contaminants from commercial and industrial processes. |
Bacterial treatment processes include: | aerobic anaerobic facultative and specialised bacteria for the removal of grease and other contaminants. |
Combination and specialised treatment processes are any combination of processes, including: | bacterial treatment processes diffused air flotation systems first-flush systems neutralising chambers solid removal systems specialised treatment process stormwater diversion. |
Stormwater diversion and first-flush systems include: | exclusion of stormwater from sewerage systems or admittance of first portion of stormwater generated by a rain event to the sewerage system. |
System calculations include: | determination of flow and fixture loadings gradient calculations interpretation of design charts and tables pipe sizing calculations reduced level calculations treatment system sizing. |
Pumpwell, pump and pump control requirements 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. |
Pipe fixings include: | anchors bedding bracket spacing concrete support corrosion protection cover hanging brackets material requirements saddles wall and ceiling brackets. |
Materials include: | cast iron concrete copper earthenware fittings and fixtures, including sound attenuation requirements high density polyethylene (HDPE) unplasticised polyvinyl chloride (PVC-U). |
Jointing methods include: | brazing gluing mechanical joints rubber ring solvent cement welding threading. |
Installation requirements include: | bedding clipping concrete support installation details jointing requirements level of workmanship. |
Computer software packages include: | proprietary design software manufacturers' software. |
Plans include: | axonometrics cross-sections details elevations isometrics schematics, which may be produced using: computer generation Indian ink pencil pigment liner sections. |
Specification includes: | bedding clipping concrete support detailing of specialised components jointing manholes manufacturer requirements materials sewer admission limits workmanship. |
Testing includes: | air pressure test drainage inspection hydrostatic test quality assurance (QA) audit. |
Commissioning schedule includes: | charging traps leak check operational commissioning pump commissioning treatment system commissioning. |
Operation and maintenance manual includes: | check for blockages leak detection pump maintenance regular treatment system maintenance regular water quality testing water auditing yearly maintenance requirements. |