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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 heated water supply and distribution 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 heated water use applications. |
Cost-benefit analysis refers to comparison of a range of factors to enable cost-effective choices to be made without compromising the integrity of the project, which may include: | design stylesdurability and available design lifeenergy costslabour costsmaterial costssafety factorsspeed of installationsuitable materialssystem choices. |
Statutory and regulatory requirements may include: | Acts and regulationsAustralian and New Zealand standards, including AS/NZS3500 National plumbing and drainage set: Parts 4.1 and 4.2Building Code of Australialocal and state government policies, including group and strata titling. |
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, including:applicationsformssewer detail mapsother reports as available. |
Performance requirements include: | those established using Australian and New Zealand standards and local authority plans. |
Layout of pipework systems may include: | dead leg systemspumped systemsthermo convection systems. |
Fittings and valves may include: | fittings:bendsteesunionsvalve trainsvalves:backflow preventioncold water expansionisolatingnon-return, including high pressure non-returnpressure limitingpressure reliefstrainers. |
Thermostatic mixing valves and tempering valves may include: | alcoholbimetallic typeswax capsule. |
Circulating heated water supply system details may include: | circulating pump specificationdead leg minimisationflow and return pipeworkspeed of circulationthermal convection circulating systems. |
Heat trace systems may include: | costinstallation requirements. |
Calculations for sizing water heaters may include: | coefficient of expansiondaily flowsenergy calculationsheat loss calculationsmixed temperature calculationspeak demandrecovery timessize and quantity of heated water requiredstandby versus continual flowtariff calculationswater expansion calculations. |
Methods for the control of expansion may include: | bendslyre loops and full loopsoffsetsproprietary expansion control devices. |
Pipe fixings may include: | anchorsbracket spacingcorrosion protectionhanging bracketsmaterial requirementssaddleswall and ceiling brackets. |
Manifolding heated water units may include: | balanced flow conditions and valvespressure relief requirements. |
Water heaters may include: | continuous flowelectricgasheat transferhigh pressurelow pressureother fuel sourcessolarstoragevented atmospheric pressure systems. |
Safe trays and overflows may include: | above habitable areasheightsmaterialssizesspace requirements. |
Materials may include: | composite pipe materials and other pipe materials as specifiedcopperfittings and fixturespolybutylene. |
Jointing methods may include: | brazingcompressionflaringmechanical jointsthreading. |
Insulation materials may include: | densitydiameterfeltfibre glassfoamheat lossesheat transmission processesrock woolthickness. |
Installation requirements may include: | clippinginstallation detailsjointing requirementslevel of workmanship. |
Circulating systems may include: | approved pressure pipes and fittingscalculated rise and pump delivery requirementspump sizing to meet calculated flow conditions. |
Plans: | may include:axonometricscross-sectionsdetailselevationsisometricsschematicssectionsmay be produced using:computer generationIndian inkpencilpigment liner. |
Specification may include: | beddingclippingconcrete supportjointingmanholesmanufacturer requirementsmaterialsworkmanship. |
Testing may include: | air pressure testhydrostatic testquality assurance (QA) audit. |
Commissioning schedule may include: | balancing the systemchecking and flushing the systemtemperature setting. |
Operation and maintenance manual may include: | check for blockagesleak detectionpump maintenancewater auditingyearly inspectionyearly maintenance requirements. |