|
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 specificationsbuilder specificationsowner requirementsspecialist water use applications. |
Vacuum sewerage system attributes include: | availabilitycostinstallation requirementsriskssewerage loadingsite 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 titlingAS/NZS3500 National plumbing and drainage setAS2200 Design charts for water supply and sewerageBuilding Code of Australia. |
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 plansother 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 consideration of:amenity of the buildingclipping and pipe supportfireproofingfunction of the buildingimpingement on floor heightsmaterials to be usedsize of penetrationstype of building structureshould not unduly affect building integrity and aesthetic appealshould include principles of economy, serviceability, durability and fit for use should be applied. |
Fittings and valves include: | air admittancebendsinspection and maintenance accessjunctionspressure reliefreflux valvestraps. |
Pipe size calculations include: | determination of flow and fixture loadingsinterpretation of design charts and tablespipe sizing calculationsreduced level calculations. |
Pipe fixings include: | anchorsbracket spacingcorrosion protectioncoverhanging bracketsmaterial requirementssaddleswall and ceiling brackets. |
Pumpwell, pump and pump control requirements include: | automatic controlscapacitycorrosion-resistant materialsdetailinghigh and low-level water controls and alarmsimpeller sizinginlet and outlet design requirementsinstallation and mounting requirementsmacerator requirementspump selectionpump sizingpumpwell sizingspace requirementsvacuum pump systemsvalve requirementswarning system. |
Materials include: | appropriate materials specified based on:compatibilitycost effectivenessdurabilityfit for purposehigh density polyethylene (HDPE)polyvinyl chloride (PVC)stainless steel. |
Jointing methods include: | brazinggluingmechanical jointsrubber ringsolvent cement weldingthreading. |
Installation requirements include: | beddingclippingconcrete supportinstallation detailsjointing requirementslevel of workmanship. |
Computer software packages include: | manufacturers' softwareproprietary design software. |
Plans: | include:appropriate design, sizing, notes and legendcompliance with industry conventionsproduction to industry standards and in accordance with regulatory and manufacturer requirementsbeing produced by using:computer generationIndian inkpencilpigment linermay also include:axonometricscross-sectionsdetailselevationsisometricsschematicssections. |
Specification includes: | beddingclippingconcrete supportdetails of specialised componentsfittingsinstallation methodsinstallation standardsjointingmanufacturer requirementsmaterialspipeworkvacuum sewerage componentsvacuum sewerage fixturesvalvesworkmanship. |
Testing includes: | compressed air testflow testinghydrostatic testinspection checklistquality assurance (QA) audit. |
Commissioning schedule includes: | checking for:burrs and obstructionsfitness for purposeflushing systemremoving contaminantschecking vacuum leaks. |
Operation and maintenance manual includes: | checking for blockagesleak detectionmaintenance intervalsoperation guidelinesrequired maintenancesystem inspection checklistvacuum pump maintenance. |