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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 specificationsincludes sizing and documenting layout of complex cold water systems for applications including residential, commercial and industrialmay be for new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements may include: | architectural specificationsbuilder specificationsowner requirementsspecialist 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 regulationslocal and state government policies. |
Australian and New Zealand standards may include: | AS/NZS3500 National plumbing and drainage set: Parts 1.1 and 1.2AS2200 Design charts for water supply and sewerageBuilding Code of Australia. |
Manufacturer requirements may include: | material specificationspump tablessizing tablestechnical and trade manuals. |
Desktop study can include collection and interpretation of existing data for design purposes from: | architectural and building planscouncil plansdeveloper plansother 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 feedring mainsingle pipe. |
Fittings and valves may include: | fittings:bendselbowsteesunionsvalves:backflow preventionexcess pressureisolatingpressure limitingpressure reductionstrainers. |
Backflow prevention devices may include: | break tanksproperty and individual protectiontestable and non-testable deviceszone protection. |
Flush valve system types may include: | backflow prevention requirementsgravitymains pressurepipe sizing requirementsstorage requirements. |
Cold water system components cover: | meter assemblies, including:direct and indirectelectronicinferentialmagneticthrust blocks and their design elements, including:design details for tees, elbows, valves and meter assemblieskeying and anchorage pointssizessoil characteristicsvelocity and flow forces to be resistedpipe fixings, including:anchorsbeddingbracket spacingcorrosion protectioncoverhanging bracketsmaterial requirementssaddleswall and ceiling bracketswater storage systems, including:automatic controlsinlet valve design and sizingoutlet sizingoverflow requirementssafe tray requirementstank sizes. |
Pump, pump controls and pumproom requirements may include: | automatic controlsimpeller sizinginlet and outlet design requirementsinstallation and mounting requirementspump selectionpump sizingspace requirementsvalve requirements. |
Materials include: | acrilonitrile butadiene styrene (ABS)composite pipeworkcoppercross-linked polyethylenefittings and fixturespolybutyleneprotective coatingssteel. |
Jointing methods may include: | brazingcompressionflaringmechanical jointsrubber ring jointsscrewingsoldering. |
Installation requirements include: | beddingclippinginstallation detailsjointing requirementslevel of workmanship. |
Delivery systems may include: | constant flow variable speed pumpsdownfeedhydropneumaticpressure ratioupfeed. |
Plans include: | axonometricscross-sectionsdetailselevationsisometricsschematicssections. |
Specification may include: | beddingclippingjointingmanufacturermaterialsspecialised componentsvalve selectionworkmanship. |
Testing may include: | air pressure testdefect inspectionhydrostatic testmains pressure testquality assurance (QA) audit. |
Commissioning schedule may include: | flow testleak checkpressure testsystem purgevalve operation. |
Operation and maintenance manual may include: | leak detectionpump maintenancevalve maintenancewater auditingyearly inspectionyearly maintenance requirements. |