Unit of competency Outline

Date retreived
22/07/2026 10:21 PM AWST

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Design water treatment systems

Design water treatment systems

Unit of competency
National Code
AHCWAT501A
State Code
D7274
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
10/06/2011
View on TGA
State Implementation and Classification
Approved Date
13/12/2011
Field of Education
030907 - Water And Sanitary Engineering
Original Release Date
13/12/2011
Nominal Hours
50
Description
This unit covers the process of identifying design requirements, determining specifications for storage and treatment systems, and determining capital and operating expense budgets for the system designed and defines the standard required to: identify design requirements; determine specifications for suitable pumping and power systems; design treatment systems; determine capital and operating expense budgets for the system designed.
Notes
Elements and Performance Criteria
1. Determine design requirements
  • 1.1. Quality of water to be treated and level of treatment is determined.
  • 1.2. Construction specifications define the work required to treat water for the enterprise in accordance with environmental and Occupational Health and Safety (OHS) requirements.
  • 1.3. Environmentally sensitive areas are identified and protected according to local, State and National legislation.
  • 1.4. Design calculations and decisions are documented to enterprise requirements.
2. Define pumping and power systems
  • 2.1. Pumps are selected to treat water efficiently and effectively as required, to enable supply at the flow and the pressure required to operate the distribution system.
  • 2.2. The pump motor combinations are efficient and the pumps are reliable, functional, serviceable and flexible for the intended application.
  • 2.3. Energy requirements are determined and layout of electricity lines are determined and checked with local authority.
  • 2.4. The relationship between capital and operational costs are optimised including a comparison of energy sources.
  • 2.5. Structures, valves and accessories are selected and integrated into a functional system that can be monitored and maintained according to enterprise guidelines.
  • 2.6. Performance indicators, design calculations and decisions are documented according to enterprise guidelines.
  • 2.7. Construction specifications define the work required to make a suitable pumping and power system available to enterprise.
  • 2.8. Power supply design specification is checked with power authorities
3. Design an water treatment system
  • 3.1. Treatment systems are evaluated and designed with respect to a range of key variables.
  • 3.2. Pipes, valves and fittings are sized according to design system specifications so that capital cost is balanced against operation costs over the anticipated system life.
  • 3.3. Flows, water levels and pressures are calculated and documented to be within the acceptable tolerances for optimum performance.
  • 3.4. Flows, water levels and pressures are achievable by the pumps operating at optimum efficiency and according to enterprise standards.
  • 3.5. Mechanisms for controlling and adjusting pressure are included.
4. Determine capital expense budget
  • 4.1. Design calculations and decisions are documented and relevant information is communicated clearly through plans, specifications and manuals.
  • 4.2. Design output is checked by a competent designer against enterprise objectives.
  • 4.3. Materials requirements are determined and documented from plans and specifications.
  • 4.4. Labour requirements are estimated based upon documented work schedule, with reasonable allowance for variances in work schedules.
  • 4.5. Costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements.
5. Determine operating expense budget
  • 5.1. Operating expense budget indicates all expenses applicable to the completed irrigation system.
RANGE STATEMENT
The range statement relates to the unit of competency as a whole.
Reuse systems may include:
disinfestation and filtering equipment
Drainage systems may include:
surface drains
culverts
mole drains
sand slit
sub-surface traps
pit and trap systems
dune and swale systems
reed beds
water-recycling pumps and baffles.
EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:
identify design requirements
determine specifications for suitable pumping and power systems
design treatment systems
determine capital and operating expense budgets for the system designed.
Context of and specific resources for assessment
Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances.
Replaces
State Code National Code Title Type
S3466 RTE5608A Design water treatment systems Unit of competency
Replaced By
State Code National Code Title Type
BAN20 AHCWAT501 Design water treatment systems Unit of competency