ELEMENT

PERFORMANCE CRITERIA

1. Determine design requirements

1.1. Watertypes and water sources are determined so that water budget is developed to ensure water is available in sufficient quantities at all times.

1.2. Water and soil quality are determined to ensure appropriate environment is provided for cultured or held stock and past records are analysed to determine water flow variability.

1.3. Water transfer, recharge, reuse and treatment systems are designed to conserve natural resources and match requirements for cultured or held stock.

1.4. Culture or holding structures and systems are positioned to make the best use of water resources.

1.5. Water requirements are matched with enterprise production forecasts, expansion plans and seasonal variation.

1.6. Process of collecting or storing water does not degrade the water quality for the enterprise or the environment.

1.7. Design calculations and decisions are documented to enterprise requirements and construction specifications define the work required to make suitable water available to the enterprise.

1.8. Environmentally sensitive areas are identified and protected according to local, state, territory and national legislation and land degradation issues are identified.

1.9. Allowable effluent standards are determined.

2. Define pumping and power systems

2.1. Pumps are selected, on the basis of expert advice, to deliver water efficiently from the water source or storage, when needed, and at the flow and pressure required to operate the distribution system to the design specifications.

2.2. Pump motor combinations are efficient, reliable, functional, serviceable and flexible for the intended application.

2.3. Relationship between capital and operational costs is optimised, including a comparison of energy sources.

2.4. Structures, valves, accessories and performance indicators are selected and integrated into a functional system that can be monitored and maintained according to enterprise procedures.

2.5. Design calculations and decisions are documented.

2.6. Construction specifications define work required to make suitable pumping and power system available to enterprise.

2.7. Power supply design specification is checked with power authorities.

2.8. Risks associated with power configurations, personal safety, water pressures and loads are identified and minimised through system design and appropriate operating procedures.

3. Design a distribution system

3.1. Detailed topographic survey is commissioned or an accurate map is obtained showing extent, pond/tank layout, physical constraints and contours with suitable interval.

3.2. Excavation and earth moving plan is developed and internal or outside personnel, labour and machinery identified.

3.3. Water budgets are determined according to evaporation and seepage characteristics and water usage practices.

3.4. Distribution systems are evaluated and designed according to a range of key variables, including the ability to isolate areas/systems for disease control or maintenance.

3.5. 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.

3.6. Flows, water levels and pressures are achievable for the pumps.

3.7. Mechanisms for controlling and adjusting pressure are included and isolation valves direct water to areas with different water flow schedules.

3.8. Channel systems and attendant structures are designed according to system requirements and channel flow velocities are calculated.

3.9. Soil types are compared for erodibility, and suitable fill selected for construction.

3.10. Construction plans and specifications define work required to achieve the desired standards of uniformity and efficiency of water application.

4. Design a drainage, storage and treatment system

4.1. Regional geology and geography is investigated to predict sustainability of pond construction and water storage.

4.2. Site investigations determine depth of clay, depth of ground water, soil and water salinity and structural or chemical impediments and calculations, and costings determine the most cost-effective storage system.

4.3. Designs are developed in conjunction with contractors and authorities.

4.4. Drains and structures are capable of carrying the design water volumes and flow intensities.

4.5. Waste water treatment structures are incorporated.

5. Determine capital expense budget

5.1. Design calculations and decisions are documented and relevant information communicated clearly through plans, specifications and manuals.

5.2. Design output is checked by a competent designer against enterprise objectives.

5.3. Material requirements are determined and documented from plans and specifications.

5.4. Labour requirements are estimated based upon documented work schedule with reasonable allowance for variances in work schedules.

5.5. Costing attributed to each component is based upon quoted information from suppliers or sound analysis of individual elements.

6. Establish management procedures

6.1. Operating expense budget confirms all expenses applicable are applied to the completed water supply and disposal system.

6.2. Contingency plans are developed in the event of reduced water quality or quantity.

6.3. Procedure is developed for handling notifications from authorities pertaining to water supply and disposal.

6.4. Involvement is undertaken in an integrated regional approach to water monitoring, quality and quantity supply issues and future planning.

6.5. Mechanisation or automation of process or activity, including the use of specialised contract services, is researched and introduced.

6.6. Record keeping procedures are established for managing water supply and disposal system that meet administrative, enterprise and regulatory requirements.