List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Element | Performance criteria |
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1. Install surface irrigation systems | 1.1 Check water supply is compatible with system specifications 1.2 Interpret plan, mark out structures and peg earthworks 1.3 Prepare and maintain beds, diversion and conveyancing structures 1.4 Install diversion and conveyancing structures, channels and beds 1.5 Prepare bed surface with roto-buck 1.6 Test structures for configuration, flow rates and capacity |
2. Complete water measurement and tail-water works | 2.1 Install water measurement structures 2.2 Install channels and tail water storages 2.3 Install pumping equipment, lines and filters 2.4 Confirm that the system configuration and capacity matches the installation plan 2.5 Finish off earthworks and structures |
3. Operate pumps and siphons | 3.1 Prime pumps and open or close valves and controls 3.2 Position and set up pipes, system equipment and outlets 3.3 Prime and start siphons and other delivery mechanisms 3.4 Implement start up sequence and slowly build up water levels and pressure 3.5 Check pressure at the head-works and control valves 3.6 Distribute water evenly to the targeted areas with minimal wastage and run-off 3.7 Irrigate area and observe time lag between shut down and end of watering to minimise run-off and deep percolation |
4. Measure and interpret water levels, flow rates and volume of water used | 4.1 Monitor and maintain head water levels 4.2 Confirm that all water outlets are operating correctly 4.3 Replace or clear blocked inlets and outlets 4.4 Measure and record flow rates and water usage 4.5 Implement irrigation changes as required |
5. Monitor drainage and tail-water systems | 5.1 Monitor water intake, conveyance and distribution, drainage and tail-water 5.2 Check water reuse systems for clearance and freedom from weeds 5.3 Monitor pumps, if used, during operation, clear rubbish from outlets and backflush pump |
6. Inspect and maintain a surface irrigation system | 6.1 Record damage and blockages with contaminants by damage type, location and the section of the system affected 6.2 Record and report damaged or faulty pumps, valves, electrical components and computer control systems and take action to effect repairs 6.3 Service water measuring, diversion and conveyancing, and distribution structures 6.4 Carry out vegetation control to keep all system components clear 6.5 Undertake servicing and repair of mechanical equipment |
The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.
The candidate must provide evidence that they can:
adjust and monitor check valves
build and maintain irrigation structures, channels and beds
carry out running repairs on irrigation delivery and drainage systems
carry out shut down procedures, clean equipment and dispose of waste
check pressure at the head works and control valves
check the serviceability of siphons
identify variations in water flow and distribution
inspect irrigation systems
install pumps and pipelines
measure water usage
perform system commissioning tasks
prepare irrigation beds
remove and replace gates, slides and doors
remove and replace valves and filters
start and move siphons and spiles and check flow
start up the system
undertake minor repairs of equipment
use roto-buck for bed preparation
The candidate must demonstrate knowledge of:
principles and practices of surface irrigation
behaviour of water on varying terrain and soil types
calculations for installing surface irrigation systems
characteristics and operation of components
components of a surface irrigation system
environmental impacts of surface irrigation installation
soil characteristics
soil water retention testing techniques
water quality and water filtration techniques
common operational and maintenance problems
common operational problems
environmental impacts of irrigation maintenance
maintenance requirements – routine and end of season
surface irrigation system components
weed control methods