Unit of competency Outline
Date retreived
23/07/2026 6:05 PM AWST
23/07/2026 6:05 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Monitor and control irrigation drainage systems
Monitor and control irrigation drainage systems
Unit of competency
National Code
AHCIRG425A
AHCIRG425A
State Code
WE049
WE049
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
09/04/2013
Field of Education
059999 - Agriculture, Environmental And Related Studies, N.e.c.
Original Release Date
09/04/2013
Nominal Hours
70
Description
This Unit covers the process of monitoring and controlling the performance and efficiency of an irrigation drainage system and defines the standard required to: identify and correcting system problems; measure, record and report soil moisture, salinity and water table depth; apply measuring and testing techniques; regulate drainage flows and clear blockages; record and report system performance.
Notes
Elements and Performance Criteria
1 Assess irrigation drainage and collection systems
- 1.1 Measurements are taken with appropriate equipment to determine drainage performance
- 1.2 Drainage/tail water quality is measured in accordance with OHS and enterprise policy and procedures
- 1.3 Water table depth is measured where required in accordance with OHS and enterprise policy and procedures
- 1.4 Soil salinity is measured where required in accordance with OHS and enterprise policy and procedures
- 1.5 Factors external to the system, which may cause interference, are identified and recorded in accordance with OHS and enterprise policy and procedures
- 1.6 Drainage system data is analysed and compared to the performance specified in the irrigation drainage plan
2 Regulate flows
- 2.1 Flow regulating systems are inspected and apply adjustments are applied necessary to achieve discharge requirements specified
- 2.2 Discharge flows are monitored and diversions applied to facilitate repair or emergency
3 Control and operate drainage system structures and processes
- 3.1 Processes are controlled to maintain performance specified in the irrigation drainage plan
- 3.2 Maintenance procedures for drainage system structures are developed and implemented
- 3.3 Operational conditions of the drainage system are identified, addressed and reported according to organisational requirements
- 3.4 Processes are integrated to improve drainage network performance
4 Troubleshoot drainage problems
- 4.1 A visual inspection is undertaken to determine damaged or broken components and results are recorded in accordance with Occupational Health and Safety (OHS) and enterprise policy and procedures
- 4.2 Areas being drained are inspected for signs of water pooling and problems are recorded in accordance with OHS and enterprise policy and procedures
- 4.3 Access to drainage lines is obtained to allow blockage to be cleared
- 4.4 Blockage is cleared or blocked section is replaced according to enterprise, environmental and OHS procedures
- 4.5 Drainage line is tested to confirm blockage is cleared from pipe system
- 4.6 Drainage line is repaired/resealed to permit normal use
- 4.7 The drainage site is rehabilitated
5 Record and report system performance status
- 5.1 Water quality is recorded in accordance with enterprise procedures
- 5.2 Water table depth, soil moisture and salinity are recorded in accordance with enterprise procedures
- 5.3 Strategies that minimise the negative environmental impacts and maximise the positive impacts of the drainage system, are documented
The range statement relates to the Unit of Competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
Irrigation drainage systems may include:
both surface and sub-surface drainage installed to handle water which is excess to plant requirements in an irrigated area.
Drainage system structuresmay 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.
Irrigation drainage systems may include:
both surface and sub-surface drainage installed to handle water which is excess to plant requirements in an irrigated area.
Drainage system structuresmay 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.
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 and correcting system problems
measure, record and report soil moisture, salinity and water table depth
apply measuring and testing techniques
regulate drainage flows and clear blockages
record and report system performance.
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.
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 and correcting system problems
measure, record and report soil moisture, salinity and water table depth
apply measuring and testing techniques
regulate drainage flows and clear blockages
record and report system performance.
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.
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| BAR20 | AHCDRG402 | Monitor and control irrigation drainage systems | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| J158 | AHC41112 | Certificate IV in Irrigation | Qualification |