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Elements and Performance Criteria

1. Determine design requirements
   • Quality of water to be treated and level of treatment is determined.
   • Construction specifications define the work required to treat water for the enterprise in accordance with environmental and Occupational Health and Safety (OHS) requirements.
   • Environmentally sensitive areas are identified and protected according to local, State and National legislation.
   • Design calculations and decisions are documented to enterprise requirements.
2. Define pumping and power systems
   • 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.
   • The pump motor combinations are efficient and the pumps are reliable, functional, serviceable and flexible for the intended application.
   • Energy requirements are determined and layout of electricity lines are determined and checked with local authority.
   • The relationship between capital and operational costs are optimised including a comparison of energy sources.
   • Structures, valves and accessories are selected and integrated into a functional system that can be monitored and maintained according to enterprise guidelines.
   • Performance indicators, design calculations and decisions are documented according to enterprise guidelines.
   • Construction specifications define the work required to make a suitable pumping and power system available to enterprise.
   • Power supply design specification is checked with power authorities
3. Design an water treatment system
   • Treatment systems are evaluated and designed with respect to a range of key variables.
   • 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.
   • Flows, water levels and pressures are calculated and documented to be within the acceptable tolerances for optimum performance.
   • Flows, water levels and pressures are achievable by the pumps operating at optimum efficiency and according to enterprise standards.
   • Mechanisms for controlling and adjusting pressure are included.
4. Determine capital expense budget
   • Design calculations and decisions are documented and relevant information is communicated clearly through plans, specifications and manuals.
   • Design output is checked by a competent designer against enterprise objectives.
   • Materials requirements are determined and documented from plans and specifications.
   • Labour requirements are estimated based upon documented work schedule, with reasonable allowance for variances in work schedules.
   • Costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements.
5. Determine operating expense budget
   • Operating expense budget indicates all expenses applicable to the completed irrigation system.

Required Skills

Required skills

collect and analyse information identify adverse environmental impacts of water treatment activities and appropriate remedial action identify design requirements develop specifications develop and implement relevant enterprise OHS and environmental procedures use literacy skills to fulfil job roles as required by the organisation The level of skill may range from reading and understanding documentation to completion of written reports use oral communication skillslanguage competence to fulfil the job role as specified by the organisation including questioning active listening asking for clarification negotiating solutions and responding to a range of views use numeracy skills to estimate calculate and record complex workplace measures use interpersonal skills to work with others and relate to people from a range of cultural social and religious backgrounds and with a range of physical and mental abilities

Required knowledge

design processes developments in water treatment technology automatic control and monitoring systems waste management and environmental issues budgeting contractual development and obligations environmental protection agency regulations environmental impacts of water treatment costbenefit analysis enterprise policies and procedures

Evidence Required

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

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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.

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