Unit of competency Outline

Date retreived
23/07/2026 12:47 AM AWST

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Determine hydraulic parameters for an irrigation system

Determine hydraulic parameters for an irrigation system

Unit of competency
National Code
AHCIRG402A
State Code
D6880
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
10/06/2011
View on TGA
State Implementation and Classification
Approved Date
11/04/2013
Field of Education
059999 - Agriculture, Environmental And Related Studies, N.e.c.
Original Release Date
11/04/2013
Nominal Hours
65
Description
This unit covers determining hydraulic parameters for an irrigation system and defines the standard required to: calculate water volumes and pressure required to deliver water; and select system components to deliver the required rate of irrigated water.
Notes
Elements and Performance Criteria
1. Confirm water delivery specifications for irrigation system
  • 1.1. Soil characteristics are confirmed and hydraulic properties determined.
  • 1.2. Plant/crop water requirements are gathered for various stages of growth.
  • 1.3. Peak water requirements are determined for each area to be irrigated.
2. Determine pressures required to deliver required amount of water over specified area
  • 2.1. Static pressures between water source and delivery points are determined.
  • 2.2. Dynamic pressure necessary to achieve required water volume is calculated.
3. Analyse technical drawings to determine pressure losses through system
  • 3.1. Losses resulting from fittings, laterals and elevation differences are calculated.
  • 3.2. Losses resulting from flow through canals, culverts and pipes of varying sizes and diameters within a system are determined.
  • 3.3. Total friction loss is calculated.
  • 3.4. Hydraulic parameters for system are determined.
4. Select system components to deliver water efficiently
  • 4.1. Water delivery components are selected to achieve the most efficient delivery rate and pressure.
  • 4.2. Flow direction and control components are selected to be compatible with pipes and to achieve minimal friction losses.
RANGE STATEMENT
The range statement relates to the unit of competency as a whole.
This standard covers:
pressurised irrigation systems, such as micro-irrigation systems and spray irrigation systems
gravity-fed irrigation systems.
Irrigation systems may include
manual operation and monitoring to fully automated with computer control and monitoring.
EVIDENCE GUIDE
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:
calculate water volumes and pressure required to deliver water
select system components to deliver the required rate of irrigated water.
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.
Replaces
State Code National Code Title Type
S3467 RTE4602A Determine hydraulic parameters for an irrigation system Unit of competency
Replaced By
State Code National Code Title Type
BAM55 AHCIRG402 Determine hydraulic parameters for an irrigation system Unit of competency