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:interpretation of plans and specificationssizing and documenting layout of gas reticulation systems for applications, including residential, commercial and industrialmay be for new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements must include: | architectural specificationsbuilder specificationsowner requirementsspecialist use applications. |
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 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/NZS1596 The storage and handling of LP gasAS5601 (AG601) Gas installationsGas Act 1965 and amendmentsgas regulationsgas utility and supplier information and requirementsindustry standardsmanufacturer requirementsNational Construction Code. |
Manufacturer requirements include: | material specificationspump tablessizing tablestechnical and trade manuals. |
Desktop study includes collection and interpretation of existing data for design purposes in: | architectural and building planscouncil plansdeveloper plansother documents, including:applicationsformsother reports as available. |
Layout of pipework systems must: | have principles of economy, serviceability, durability and fit for use appliednot unduly affect building integrity and aesthetic appeal. |
Fittings and valves include: | bendscouplingsregulatorsteesunions. |
Calculations must include: | energygas volumepressuresizingstorage. |
Ventilation and flue requirements must include: | appliance flue design and ventilation requirements according to standards, regulations and gas authorities’ requirements. |
Specifications of regulators include: | adjustment procedures of regulatorsexcessive pressure protection types of regulatorsgas regulation methodidentification, analysis and documentation of regulator faultsprinciples of operationselection and installation requirementssizing of regulatorstypes of gas regulators. |
Specifications of appliances include: | commercial appliancescomponentsconstruction of the appliancedomestic appliance designelectronic controlsindustrial appliances. |
Design of cylinder and tank systems is based on: | anticipated useappropriate time period between refillinggas storage requirements calculations. |
Pipe fixings include: | anchorsbracket spacingcorrosion protectioncoverhanging bracketsmaterial requirementssaddleswall and ceiling brackets. |
Materials include: | copper (Cu)fittings and fixturesgalvanised steelpolyethylene (PE)unplasticised polyvinyl chloride (PVC-U). |
Jointing methods include: | brazing and threadinggluingmechanical jointsrubber ringsolvent cement welding. |
Installation requirements include: | clipping, bedding and installation detailinstallation requirements for mobile, marine installation and portable appliances (high and low-pressure)jointing requirementslevel of workmanship. |
Plans include: | axonometricscross-sectionsdetailselevationsisometricsschematics, which may be produced using:computer generationdrawing equipmentsections. |
Specification includes: | appliancesbeddingclippingdetails of specialised componentsjointingmanufacturer requirementsmaterialsvalvesworkmanship. |
Testing includes: | bubble leak testingelectronic gas leak detectionflow testinginspection checklistpressure testingquality assurance (QA) audit. |
Commissioning schedule must include: | checking for burrs and obstructionscommissioning appliancesconfirming fit for purposepurging systemremoving contaminants. |
Operation and maintenance manual includes: | check for blockagesleak detectionregular inspectionregular maintenance requirements. |