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: | must include:interpreting plans and specificationssizing and documenting layout of trade waste pre-treatment systems for commercial and industrial applicationsmay be for new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements must include: | architectural plansbuilding specificationscleaning and maintenance proceduresinstallation requirementsodour controlowner requirementspipework identificationsizingtrade waste treatmentventilation. |
Statutory and regulatory requirements and relevant Australian standards and codes may include: | AS/NZS3500 National plumbing and drainageAS2200 Design charts for water supply and seweragecommonwealth, state or territory and local governments requirements National Construction Codeother relevant Australian standards and codes. |
Trade waste applications may include: | chemical facilitiescommercial and industrial facilities that produce a liquid waste streamcommercial and industrial laundryfood preparation facilitieslaboratoriesmotor vehicle workshopsphotography development facilitieswash-down facilities. |
Cost-benefit analysis: | compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of projectmay include:design stylesenergy costsexpected design lifelabour costsmaterial costssafety factorsspeed of installation suitable materials authorities’ requirements. |
Manufacturer requirements may include: | containmentdesign and installationinstallation space material specificationspipe sizingpump installationstorage systemstechnical and trade manualsventilation. |
Desktop study may include collection and interpretation of existing data for design purposes in: | architectural and building plansdeveloper plansmanufacturer datadocuments, which may include:applicationsbrochuresformspoliciesother reports as availabletrade waste publications. |
Performance requirements must: | establish acceptable discharge standards for the relevant authoritycomply with relevant Australian standards, codes and local authorities’ requirements. |
Layout of pipework systems: | may include:location of pipework (fire rating of enclosure)trade waste plumbing and drainagepumped systemsaccessibilityshould not unduly affect building integrity and aesthetic appealshould have principles of economy, serviceability, durability and fit for use applied. |
Fittings may include: | bendsjunctionsreflux valvesinspection openingsexpansion joints. |
Solid removal systems may remove: | bonedirtgritmetalpaperplasticrubbishsandsiltwoodother solid contaminants. |
Grease and oil interceptors may include: | coalescing plate separatorsdissolved air flotation (DAF)grease trapsskimmersvertical separators. |
Neutralising chambers may neutralise: | acid alkalinechemicals. |
Wash-down areas may include: | bin commercial and industrial wash-down processes that may or may not require stormwater diversionfloorvehiclemachinery. |
Bacterial treatment processes may include: | aerobicanaerobicfacultative and specialised bacteria for the removal of grease and other contaminants. |
Combined and specialised treatment processes may include: | bacterial treatmentcooling pitsdiffused air flotation systemsneutralising chamberssolid removal systemsspecialised treatment. |
System calculations must include: | calculating gradientinterpreting design charts and tablescalculating pipe sizingcalculating reduced leveldetermining flow and fixture loadingssizing treatment systemstorage tank capacity. |
Pumpwell, pumps, controls and equipment requirements may include: | access coversautomatic controlscapacitychainscorrosion-resistant materialsdetailingemergency storagehigh and low-level water controls and alarmsimpeller sizinginlet and outlet design requirementsinstallation and mounting requirementsladder accessodour controlmacerator requirementspump selectionpump sizingpumpwell sizingspace requirementsstep ironsvalve requirementsventilationwarning system. |
Pipe supports include: | anchorsbeddingbracket spacingconcrete supportcorrosion protectioncoverhanging bracketsmanufacturer-recommended specific fixingsmaterial requirementssaddlesprovision for expansionwall and ceiling brackets. |
Materials may include: | pipes may include:cast iron or epoxy linedearthenware or vitrified clay pipe (VCP)polyethylene (PE)polypropylene (PP)other approved materialfittings and fixtures, including sound attenuation requirements. |
Jointing methods may include: | electrofusion weldingmechanical jointsrubber ringthreading. |
Installation requirements may include: | beddingpipe protection, which may include:covercorrosionimpactfire ratinglevel of workmanshipmanufacturer-recommended specific fixingspipe supportprovision for expansion serviceability and access. |
Computer software packages include: | proprietary design softwaremanufacturer software. |
Sustainability principles and concepts: | cover the current and future social, economic and environmental use of resourcesmay include:selecting appropriate material to ensure minimal environmental impactefficient use of materialefficient energy usage/capital outlay comparison effect on the environment due to overflow or leakagematerial selected to convey the type of dischargewater efficiency. |
Plans: | may include:axonometricscross-sectionsdetailselevationsisometrics schematicssectionsmay be produced using:computer generationdrawing equipment. |
Specification may include: | access chambers (manholes)beddingcommissioningconcrete support and detailing specialised componentsjointingmanufacturer requirementsmaterialspumpssafety (WHS)supporttestingworkmanship. |
Testing may include: | air pressure compliance with authorities’ discharge requirementsdrainage inspectionhydrostatic performancequality assurance (QA) audit. |
Commissioning schedule may include: | checking for foreign materialchecking system defectschecking that system functions as per designcontainmentleak checkoperational commissioningpump commissioningsystem certificationtreatment system commissioning. |
Operation and maintenance manual may include: | as installed drawingscertification documentationresults of commissioning testmaintenance schedulesmanufacturer brochures and technical informationodour controlregular treatment system maintenanceregular water quality testingventilationwater auditing. |