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 specifications sizing and documenting layout of trade waste pre-treatment systems for commercial and industrial applications may be for new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements must include: | architectural plans building specifications cleaning and maintenance procedures installation requirements odour control owner requirements pipework identification sizing trade waste treatment ventilation. |
Statutory and regulatory requirements and relevant Australian standards and codes may include: | AS/NZS3500 National plumbing and drainage AS2200 Design charts for water supply and sewerage commonwealth, state or territory and local governments requirements National Construction Code other relevant Australian standards and codes. |
Trade waste applications may include: | chemical facilities commercial and industrial facilities that produce a liquid waste stream commercial and industrial laundry food preparation facilities laboratories motor vehicle workshops photography development facilities wash-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 project may include: design styles energy costs expected design life labour costs material costs safety factors speed of installation suitable materials authorities’ requirements. |
Manufacturer requirements may include: | containment design and installation installation space material specifications pipe sizing pump installation storage systems technical and trade manuals ventilation. |
Desktop study may include collection and interpretation of existing data for design purposes in: | architectural and building plans developer plans manufacturer data documents, which may include: applications brochures forms policies other reports as available trade waste publications. |
Performance requirements must: | establish acceptable discharge standards for the relevant authority comply 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 drainage pumped systems accessibility should not unduly affect building integrity and aesthetic appeal should have principles of economy, serviceability, durability and fit for use applied. |
Fittings may include: | bends junctions reflux valves inspection openings expansion joints. |
Solid removal systems may remove: | bone dirt grit metal paper plastic rubbish sand silt wood other solid contaminants. |
Grease and oil interceptors may include: | coalescing plate separators dissolved air flotation (DAF) grease traps skimmers vertical separators. |
Neutralising chambers may neutralise: | acid alkaline chemicals. |
Wash-down areas may include: | bin commercial and industrial wash-down processes that may or may not require stormwater diversion floor vehicle machinery. |
Bacterial treatment processes may include: | aerobic anaerobic facultative and specialised bacteria for the removal of grease and other contaminants. |
Combined and specialised treatment processes may include: | bacterial treatment cooling pits diffused air flotation systems neutralising chambers solid removal systems specialised treatment. |
System calculations must include: | calculating gradient interpreting design charts and tables calculating pipe sizing calculating reduced level determining flow and fixture loadings sizing treatment system storage tank capacity. |
Pumpwell, pumps, controls and equipment requirements may include: | access covers automatic controls capacity chains corrosion-resistant materials detailing emergency storage high and low-level water controls and alarms impeller sizing inlet and outlet design requirements installation and mounting requirements ladder access odour control macerator requirements pump selection pump sizing pumpwell sizing space requirements step irons valve requirements ventilation warning system. |
Pipe supports include: | anchors bedding bracket spacing concrete support corrosion protection cover hanging brackets manufacturer-recommended specific fixings material requirements saddles provision for expansion wall and ceiling brackets. |
Materials may include: | pipes may include: cast iron or epoxy lined earthenware or vitrified clay pipe (VCP) polyethylene (PE) polypropylene (PP) other approved material fittings and fixtures, including sound attenuation requirements. |
Jointing methods may include: | electrofusion welding mechanical joints rubber ring threading. |
Installation requirements may include: | bedding pipe protection, which may include: cover corrosion impact fire rating level of workmanship manufacturer-recommended specific fixings pipe support provision for expansion serviceability and access. |
Computer software packages include: | proprietary design software manufacturer software. |
Sustainability principles and concepts: | cover the current and future social, economic and environmental use of resources may include: selecting appropriate material to ensure minimal environmental impact efficient use of material efficient energy usage/capital outlay comparison effect on the environment due to overflow or leakage material selected to convey the type of discharge water efficiency. |
Plans: | may include: axonometrics cross-sections details elevations isometrics schematics sections may be produced using: computer generation drawing equipment. |
Specification may include: | access chambers (manholes) bedding commissioning concrete support and detailing specialised components jointing manufacturer requirements materials pumps safety (WHS) support testing workmanship. |
Testing may include: | air pressure compliance with authorities’ discharge requirements drainage inspection hydrostatic performance quality assurance (QA) audit. |
Commissioning schedule may include: | checking for foreign material checking system defects checking that system functions as per design containment leak check operational commissioning pump commissioning system certification treatment system commissioning. |
Operation and maintenance manual may include: | as installed drawings certification documentation results of commissioning test maintenance schedules manufacturer brochures and technical information odour control regular treatment system maintenance regular water quality testing ventilation water auditing. |