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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 specificationsbuilder specificationsowner requirementsspecialist 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 titlingAS/NZS3500 National plumbing and drainage setAS2200 Design charts for water supply and sewerageBuilding Code of Australialocal government trade waste policies. |
Trade waste applications include: | chemical facilitiescommercial and industrial facilities that produce a liquid waste streamfood preparation facilitiesphotography development facilitieswash-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 specificationspump tablessizing tablestechnical and trade manuals. |
Desktop study includes collection and interpretation of existing data for design purposes from: | architectural and building planscouncil plansdeveloper plansmanufacturers' dataother documents, including:applicationsformssewer detail mapsother 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 systemspumped systemsshould not unduly affect building integrity and aesthetic appealshould have principles of economy, serviceability, durability and fit for use applied. |
Fittings and valves include: | bendsinspection openingsjunctionsreflux valvestraps. |
Solid removal systems include removal of: | bonedirtgritmetalpaperplasticrubbishsandsiltwoodother solid contaminants. |
Grease and oil interceptors include: | coalescing plate separatorsgrease trapsskimmersvertical separators. |
Neutralising chambers include: | acid neutralisationchemical neutralisation. |
Wash-down areas include: | bin wash downcommercial and industrial wash-down processes that may or may not require stormwater diversionfloor wash downmachinery wash down. |
Diffused air flotation systems include: | removal of contaminants from commercial and industrial processes. |
Bacterial treatment processes include: | aerobicanaerobicfacultative and specialised bacteria for the removal of grease and other contaminants. |
Combination and specialised treatment processes are any combination of processes, including: | bacterial treatment processesdiffused air flotation systemsfirst-flush systemsneutralising chamberssolid removal systemsspecialised treatment processstormwater 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 loadingsgradient calculationsinterpretation of design charts and tablespipe sizing calculationsreduced level calculationstreatment system sizing. |
Pumpwell, pump and pump control requirements include: | automatic controlscapacitychainscorrosion-resistant materialsdetailinghigh and low-level water controls and alarmsimpeller sizinginlet and outlet design requirementsinstallation and mounting requirementsladder accessmacerator requirementspump selectionpump sizingpumpwell sizingspace requirementsstep ironsvalve requirementswarning system. |
Pipe fixings include: | anchorsbeddingbracket spacingconcrete supportcorrosion protectioncoverhanging bracketsmaterial requirementssaddleswall and ceiling brackets. |
Materials include: | cast ironconcretecopperearthenwarefittings and fixtures, including sound attenuation requirementshigh density polyethylene (HDPE)unplasticised polyvinyl chloride (PVC-U). |
Jointing methods include: | brazinggluingmechanical jointsrubber ringsolvent cement weldingthreading. |
Installation requirements include: | beddingclippingconcrete supportinstallation detailsjointing requirementslevel of workmanship. |
Computer software packages include: | proprietary design softwaremanufacturers' software. |
Plans include: | axonometricscross-sectionsdetailselevationsisometricsschematics, which may be produced using:computer generationIndian inkpencilpigment linersections. |
Specification includes: | beddingclippingconcrete supportdetailing of specialised componentsjointingmanholesmanufacturer requirementsmaterialssewer admission limitsworkmanship. |
Testing includes: | air pressure testdrainage inspectionhydrostatic testquality assurance (QA) audit. |
Commissioning schedule includes: | charging trapsleak checkoperational commissioningpump commissioningtreatment system commissioning. |
Operation and maintenance manual includes: | check for blockagesleak detectionpump maintenanceregular treatment system maintenanceregular water quality testingwater auditingyearly maintenance requirements. |