Design and size domestic treatment plant disposal systems

Unit of competency Outline

Date retreived
23/07/2026 4:19 PM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Unit of competency

National Code
CPCPDR4013A

State Code
D7433

TGA Status
Replaced

DTWD Status
Replaced

Current Release Number
1.00

Current Release Date
19/05/2011

View on TGA

State Implementation and Classification

Approved Date

11/10/2011

Field of Education

040327 - Plumbing

Original Release Date

11/10/2011

Nominal Hours

Description

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.

Notes

Elements and Performance Criteria

1. Prepare for planning.

1.1. Nature and scope of planning task are identified and confirmed.
1.2. Safety (OHS) requirements associated with installation of domestic treatment plant disposal systems and workplace environmental requirements are adhered to throughout the work.
1.3. Work is organised and sequenced in conjunction with others involved in or affected by the work.
1.4. Tools and equipment required for planning, sizing and documenting layout of domestic treatment plant disposal systems, including personal protective equipment, are selected and checked for serviceability.
1.5. Work area in which the planning process is to be conducted is prepared.

2. Identify system requirements.

2.1. Information and specifications for required work are obtained and confirmed, if necessary, by site inspection.
2.2. Regulations and Australian standards relevant to work are consulted and applied to all aspects of the work.
2.3. System requirements, including capacity, method of disposal, types of system, treatment system performance requirements and processes are determined from specifications.
2.4. Information on the assessment of land capability for on-site land application of effluent are obtained and confirmed.
2.5. Information for a suitable location for the land application area and reserve area is obtained and confirmed.
2.6. System is sized in accordance with relevant Australian standards, regulatory authorities and workplace requirements.

3. Design system layout.

3.1. Disposal system is planned in accordance with specifications, Environment Protection Authority (EPA) and regulatory authorities' requirements, relevant Australian standards and workplace procedures.
3.2. Plans are developed to accord with relevant Australian standards, regulatory authorities' requirements, maintenance, site topography and landscape application areas.
3.3. Sustainability principles and concepts are applied to work preparation and application.
3.4. Materials required are specified and optimised in accordance with relevant Australian standards from proposed design.
3.5. Plans are recorded in accordance with statutory and regulatory authorities' and workplace requirements.

4. Restore work area.

4.1. Work area is restored in accordance with workplace procedures.
4.2. Tools and equipment used in the process are refurbished and left in accordance with workplace procedures.
4.3. Information is accessed and documentation, including work backup, is completed in accordance with workplace requirements.

No information

Replaces

State Code	National Code	Title	Type
W9664	CPCPDR4003A	Plan, size and lay out domestic treatment plant disposal systems	Unit of competency

Replaced By

State Code	National Code	Title	Type
WF867	CPCPDR4013B	Design and size domestic treatment plant disposal systems	Unit of competency

State Code	National Code	Title	Type
D417	CPC40911	Certificate IV in Plumbing and Services	Qualification