Assessor Resource

AHCIRG402A
Determine hydraulic parameters for an irrigation system

Assessment tool

Version 1.0
Issue Date: April 2024


This unit applies to irrigation installers and designers.

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.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Employability Skills

This unit contains employability skills.



Evidence Required

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.

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.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills

read contour maps and interpret elevations and distances

calculate pressures, flows, velocities and friction losses

determine efficiency of the system with varying system components

identify adverse environmental impacts of irrigation activities and appropriate remedial action

apply hydraulic principles to manual and computerised irrigation systems

follow relevant enterprise Occupational Health and Safety (OHS) and environmental procedures

use literacy skills to read, interpret and follow organisational policies and procedures, develop sequenced written instructions, record information collected accurately and legibly, and select and apply procedures to a range of tasks

use oral communication skills/language competence to fulfil the job role as specified by the organisation, including questioning, active listening, asking for clarification, negotiating solutions and responding to a range of views

use interpersonal skills to work with others and relate to people from a range of cultural, social and religious backgrounds and with a range of physical and mental abilities.

Required knowledge

intermediate hydraulic principles, such as static and dynamic pressure, pressure loss, friction loss, flow rate and velocity, effect of gradient on flow rate, contact time and drainage

irrigation system components

types and pressure ratings for pipes, fittings and outlets

environmental impacts of irrigation, using water from any ground or underground source

enterprise and environmental requirements.

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.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Soil characteristics are confirmed and hydraulic properties determined. 
Plant/crop water requirements are gathered for various stages of growth. 
Peak water requirements are determined for each area to be irrigated. 
Static pressures between water source and delivery points are determined. 
Dynamic pressure necessary to achieve required water volume is calculated. 
Losses resulting from fittings, laterals and elevation differences are calculated. 
Losses resulting from flow through canals, culverts and pipes of varying sizes and diameters within a system are determined. 
Total friction loss is calculated. 
Hydraulic parameters for system are determined. 
Water delivery components are selected to achieve the most efficient delivery rate and pressure. 
Flow direction and control components are selected to be compatible with pipes and to achieve minimal friction losses. 

Forms

Assessment Cover Sheet

AHCIRG402A - Determine hydraulic parameters for an irrigation system
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

AHCIRG402A - Determine hydraulic parameters for an irrigation system

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: