This unit of competency specifies the outcomes required to design, size and document the layout of domestic treatment plant disposal systems.  It covers preparation for the planning, identification and confirmation of system specifications and requirements, and the planning of the system layout and work finalisation processes, including records and documentation.

Unit details

Study level:
Vocational and further education (TAFE)
Unit code:


Assessment tasks will be designed to reinforce and extend knowledge and skill competence within set and controlled parameters in accordance with each unit's learning outcomes and performance criteria requirements, including the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines. Students will be expected to demonstrate the following required skills: - communication skills to: access information; enable clear and direct communication, using questioning to identify and confirm requirements, share information, listen and understand; follow instructions; identify requirements, including system requirements; - use language and concepts appropriate to cultural differences; - use and interpret non-verbal communication, such as hand signals; - initiative and enterprise skills to identify and report to appropriate personnel any faults in tools, equipment or materials; - literacy skills to: complete relevant workplace documentation, including work backups; - read and interpret: documentation from a variety of sources; plans, specifications and drawings; regulations and relevant Australian standards; record written plans; - numeracy skills to apply measurements and calculations; - planning and organising skills to: organise and sequence tasks with others; plan and set out work; - teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities; - technical skills to interpret plans and specifications to design layout and operational details of a domestic treatment plant disposal system, and; - access and understand site-specific instructions in a variety of media; use mobile communication technology.Students will also be expected to demonstrate the following knowledge: - Australian standards applicable to the treatment system; - design concepts and performance measures for domestic treatment plant disposal systems; - handling of hazardous waste; - infectious diseases; - job safety analysis (JSA) and safe work method statements (SWMS); - principles of the assessment of land capability for application of effluent; - principles, techniques and characteristics of effluent treatment and disposal; - process of designing domestic treatment plant disposal systems; - properties and characteristics of landscape application areas with suitable plants and vegetation, including: hardiness; high and low water requirements; maintenance requirements; native to the local area implications, and; phosphorus tolerance; - properties and characteristics of soil, including: percentages of sand, silt and clay; absorption capacity implications; - relevant statutory and authorities' requirements related to designing domestic treatment plant disposal systems; - SI system of measurements; - sources of information; - use of computers and relevant computer-aided design (CAD) software, and; - workplace and equipment safety requirements.

Where to next?

As part of a course

This unit is studied as part of the following courses. Refer to the course page for information on how to apply for the course.

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