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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 vacuum sewerage systems, for residential, commercial and industrial applications, for either new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements include: | architectural specifications builder specifications owner requirements specialist water use applications. |
Vacuum sewerage system attributes include: | availability cost installation requirements risks sewerage loading site conditions. |
Cost-benefit analysis includes: | comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project. |
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. |
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 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 consideration of: amenity of the building clipping and pipe support fireproofing function of the building impingement on floor heights materials to be used size of penetrations type of building structure should not unduly affect building integrity and aesthetic appeal should include principles of economy, serviceability, durability and fit for use should be applied. |
Fittings and valves include: | air admittance bends inspection and maintenance access junctions pressure relief reflux valves traps. |
Pipe size calculations include: | determination of flow and fixture loadings interpretation of design charts and tables pipe sizing calculations reduced level calculations. |
Pipe fixings include: | anchors bracket spacing corrosion protection cover hanging brackets material requirements saddles wall and ceiling brackets. |
Pumpwell, pump and pump control requirements include: | automatic controls capacity corrosion-resistant materials detailing high and low-level water controls and alarms impeller sizing inlet and outlet design requirements installation and mounting requirements macerator requirements pump selection pump sizing pumpwell sizing space requirements vacuum pump systems valve requirements warning system. |
Materials include: | appropriate materials specified based on: compatibility cost effectiveness durability fit for purpose high density polyethylene (HDPE) polyvinyl chloride (PVC) stainless steel. |
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: | manufacturers' software proprietary design software. |
Plans: | include: appropriate design, sizing, notes and legend compliance with industry conventions production to industry standards and in accordance with regulatory and manufacturer requirements being produced by using: computer generation Indian ink pencil pigment liner may also include: axonometrics cross-sections details elevations isometrics schematics sections. |
Specification includes: | bedding clipping concrete support details of specialised components fittings installation methods installation standards jointing manufacturer requirements materials pipework vacuum sewerage components vacuum sewerage fixtures valves workmanship. |
Testing includes: | compressed air test flow testing hydrostatic test inspection checklist quality assurance (QA) audit. |
Commissioning schedule includes: | checking for: burrs and obstructions fitness for purpose flushing system removing contaminants checking vacuum leaks. |
Operation and maintenance manual includes: | checking for blockages leak detection maintenance intervals operation guidelines required maintenance system inspection checklist vacuum pump maintenance. |