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Evidence Guide: AHCIRG334 - Operate and maintain gravity fed irrigation systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCIRG334 - Operate and maintain gravity fed irrigation systems

What evidence can you provide to prove your understanding of each of the following citeria?

Install surface irrigation systems

  1. Check water supply is compatible with system specifications
  2. Interpret plan, mark out structures and peg earthworks
  3. Prepare and maintain beds, diversion and conveyancing structures
  4. Install diversion and conveyancing structures, channels and beds
  5. Prepare bed surface with roto-buck
  6. Test structures for configuration, flow rates and capacity
Check water supply is compatible with system specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Interpret plan, mark out structures and peg earthworks

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare and maintain beds, diversion and conveyancing structures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install diversion and conveyancing structures, channels and beds

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare bed surface with roto-buck

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test structures for configuration, flow rates and capacity

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete water measurement and tail-water works

  1. Install water measurement structures
  2. Install channels and tail water storages
  3. Install pumping equipment, lines and filters
  4. Confirm that the system configuration and capacity matches the installation plan
  5. Finish off earthworks and structures
Install water measurement structures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install channels and tail water storages

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install pumping equipment, lines and filters

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm that the system configuration and capacity matches the installation plan

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Finish off earthworks and structures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate pumps and siphons

  1. Prime pumps and open or close valves and controls
  2. Position and set up pipes, system equipment and outlets
  3. Prime and start siphons and other delivery mechanisms
  4. Implement start up sequence and slowly build up water levels and pressure
  5. Check pressure at the head-works and control valves
  6. Distribute water evenly to the targeted areas with minimal wastage and run-off
  7. Irrigate area and observe time lag between shut down and end of watering to minimise run-off and deep percolation
Prime pumps and open or close valves and controls

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position and set up pipes, system equipment and outlets

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prime and start siphons and other delivery mechanisms

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Implement start up sequence and slowly build up water levels and pressure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check pressure at the head-works and control valves

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Distribute water evenly to the targeted areas with minimal wastage and run-off

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Irrigate area and observe time lag between shut down and end of watering to minimise run-off and deep percolation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Measure and interpret water levels, flow rates and volume of water used

  1. Monitor and maintain head water levels
  2. Confirm that all water outlets are operating correctly
  3. Replace or clear blocked inlets and outlets
  4. Measure and record flow rates and water usage
  5. Implement irrigation changes as required
Monitor and maintain head water levels

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm that all water outlets are operating correctly

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Replace or clear blocked inlets and outlets

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Measure and record flow rates and water usage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Implement irrigation changes as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor drainage and tail-water systems

  1. Monitor water intake, conveyance and distribution, drainage and tail-water
  2. Check water reuse systems for clearance and freedom from weeds
  3. Monitor pumps, if used, during operation, clear rubbish from outlets and backflush pump
Monitor water intake, conveyance and distribution, drainage and tail-water

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check water reuse systems for clearance and freedom from weeds

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor pumps, if used, during operation, clear rubbish from outlets and backflush pump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect and maintain a surface irrigation system

  1. Record damage and blockages with contaminants by damage type, location and the section of the system affected
  2. Record and report damaged or faulty pumps, valves, electrical components and computer control systems and take action to effect repairs
  3. Service water measuring, diversion and conveyancing, and distribution structures
  4. Carry out vegetation control to keep all system components clear
  5. Undertake servicing and repair of mechanical equipment
Record damage and blockages with contaminants by damage type, location and the section of the system affected

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record and report damaged or faulty pumps, valves, electrical components and computer control systems and take action to effect repairs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Service water measuring, diversion and conveyancing, and distribution structures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out vegetation control to keep all system components clear

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake servicing and repair of mechanical equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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

Required Skills and Knowledge

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

Range Statement