Assessor Resource

CPCPPS5027A
Design irrigation systems

Assessment tool

Version 1.0
Issue Date: March 2024


This unit of competency supports development of skills and knowledge required for competent workplace performance in a consultancy or supervisory capacity in relation to the design of irrigation systems for residential, commercial, industrial, sporting and agricultural properties with or without connection to reticulated supply.

This unit of competency specifies the outcomes required to design irrigation systems to relevant Australian standards, codes, the National Construction Code (NCC) and other relevant legislative requirements to meet occupier needs and industry standards.

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

Prerequisites

Nil


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

This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

A person who demonstrates competency in this unit must be able to, as a minimum, provide evidence of the ability to:

design, size and document layout details of an irrigation system, including a specification for a:

sports oval incorporating stormwater collection and use, with a mains pressure drinking water top-up and with chemical additives

a landscaped area for a mixed development site connected to a main pressure recycled (non-drinking) water main

evaluate and document design parameters to relevant Australian standards and codes, and regulatory, client and manufacturer requirements.

plan and detail system components that include:

backflow prevention devices

irrigation management-control system

pumping requirements

water delivery outlets

piping requirements

design and size two irrigation systems, using appropriate calculations and computer software for specific applications

prepare testing and commissioning schedules

prepare operation and maintenance manuals

apply sustainability principles and concepts throughout the design

communicate with others to ensure safe and effective work site operations.

Context of and specific resources for assessment

This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints.

Assessment of essential underpinning knowledge will usually be conducted in an off-site context.

Assessment is to comply with relevant regulatory or Australian standards’ requirements.

Resource implications for assessment include:

an induction procedure and requirement

realistic tasks or simulated tasks covering the minimum task requirements

relevant specifications and work instructions, including design brief drawings, specifications, codes, design concepts and construction schedules

tools and equipment appropriate to applying safe work practices, including computers, software and calculators

workplace instructions relating to safe working practices and addressing hazards and emergencies

material safety data sheets

research resources, including industry-related systems information.

Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support.

Method of assessment

Assessment methods must:

satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Training Package

include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application

reinforce the integration of employability skills with workplace tasks and job roles

confirm that competency is verified and able to be transferred to other circumstances and environments.

Validity and sufficiency of evidence requires that:

competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace

where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge

all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence.

Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed.

Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.


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

communication skills to:

communicate with others to ensure safe and effective work practices

confirm job specifications and client requirements

enable clear and direct communication, using questioning to identify and confirm requirements, share information, listen and understand

use language and concepts appropriate to cultural differences

use and interpret non-verbal communication, such as hand signals

literacy skills to:

prepare written documentation, including:

operation and maintenance manual

plans, specifications and schedules

read and interpret:

plans, specifications, drawings and design briefs

standards and manufacturer requirements and manuals

statutory and regulatory requirements

initiative and enterprise skills to develop creative and responsive approaches

numeracy skills to apply measurements and calculations

planning and organising skills to:

research, collect, organise and understand information relating to the design of irrigation systems

take initiative and make decisions

problem-solving skills to analyse requirements, consider options and design an appropriate system

teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities

technical skills to design irrigation systems to National Construction Code, relevant Australian standards, and other relevant legislative requirements

technology skills to:

access and understand site-specific instructions in a variety of media

use mobile communication technology

Required knowledge

application of National Construction Code or relevant Australian standards and codes, manufacturer specifications, and operating procedures relevant to the sector

common terminology and definitions used in the design of irrigation systems

nature of materials used and effects of performance under various conditions

principles of technology used in design of irrigation systems for a range of applications

work health and safety (WHS) requirements, including relevant statutory regulations, codes and standards

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.

Scope of work:

must include:

interpretation of plans and specifications

sizing and documenting layout irrigation systems and documenting layout irrigation systems for applications, including residential, sporting and agricultural properties

may be for new projects or an existing structure being renovated, extended, restored or maintained.

Design requirements must include:

architectural plans

backflow requirements

interpretation and application of irrigation services, drawings and symbols

irrigation management system

owner requirements

precipitation and evaporation rates

pumping requirements

required water application to establish and maintain plant life

source of irrigation water

sprinkler head spacings

system requirements

water storage requirements.

Cost-benefit analysis:

compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project

may include:

design styles

expected design life

labour costs

material costs

required water application to establish and maintain plant life

safety factors

speed of installation

suitability of materials

system choices

use of recycled or alternative water.

Statutory and regulatory requirements and relevant Australian standards and codes may include:

Acts, regulations and commonwealth, state or territory, and local government requirements

AS/NZS3500 National plumbing and drainage

AS2200 Design charts for water supply and sewerage

National Construction Code

state or territory health department requirements

other relevant Australian standards or codes.

Manufacturer requirements may include:

irrigation management system

material specifications

pump tables

sprinkler head performance

sub-surface irrigation

technical and trade manuals.

Desktop study may include collection and interpretation of data for design purposes in:

architectural and building plans

site layout plans, which may include:

sports ovals

golf courses

residential, commercial, industrial and agricultural properties

local government parks

manufacturer data

documents, which may include:

applications

brochures

forms

policies

other reports as available.

Flow and pressure tests may include:

interpretation of flow and pressure tests

on-site measurement of flows (l/s), velocity (m/s) and pressure (kPa).

Water sources, volumes and areas to be irrigated may include:

sources:

drinking water

non-drinking (recycled) water

rain water

grey water

creeks

dams

lakes

rivers

streams

tanks

other approved water sources

volumes and areas:

amount and duration of water supply

areas to be irrigated

number of control stations required

total amount and flow rate required for each control station.

Soil types may include:

gravels

light, medium and heavy clays

loams

rock

sands.

Performance requirements may include:

flow, velocity, pressure and discharge requirements, established using relevant Australian standards, codes and manufacturer information

required water application to establish and maintain plant life.

Layout of pipework systems:

may include:

distribution

dual feed systems

range pipes

ring main

single pipe

control stations

should not unduly affect aesthetic appeal and building integrity

should have principles of economy, serviceability, durability and fit for use applied.

Fittings, valves and controls may include:

fittings:

bends

elbows

sprinkler heads

tees

unions

valves:

backflow prevention

excess pressure

isolating

pressure limiting

pressure reduction

strainers

controls:

irrigation management system

control stations

control wiring

nodes.

Backflow prevention devices may include:

double-check valve assembly (DCV)

dual-check valve with intermediate vent (DuCV)

pressure type vacuum breaker (PVB)

reduced pressure zone device (RPZD)

registered air gap (RAG)

registered break tank (RBT)

reduced pressure detector assembly (RPDA)

reduced pressure zone device (RPZD)

other approved backflow prevention devices

may be located as:

individual protection

zone protection

containment protection.

Materials may include:

composite pipework

copper (Cu)

cross-linked polyethylene (PE-X)

polypropylene (PP)

polybutylene (PB)

polyvinyl chloride (PVC)

other relevant materials.

Jointing methods include:

brazing

compression

electrofusion welding

flaring

mechanical joints

rubber ring joints

screwing

soldering

other approved jointing methods.

Sections and components of the irrigation system must include:

irrigation stations:

number, size, area, volume of water required, delivery requirements, operation and activation of stations, sprinkler patterns, location and distribution of sprinkler heads, obstacle avoidance, water minimisation, waste minimisation and timing

manifold systems:

manifolds to stations, headers, branches, timers, isolators, servo valves, electronics, power supplies and manual activation

sensors:

moisture sensors, soil sensors, temperature sensors, humidity sensors, weather stations and computer automation

automatic controls:

station controllers, servo valves, isolating valves, water tractors and timers

sprinklers, drippers and irrigators:

sprinkler heads, sprinkler flows, impact sprinklers, gear-driven sprinklers, water tractors, water cannons, tape drippers, individual drippers, flow controlled drippers, in-ground irrigation tapes and root inhibitor systems

sprinkler patterns:

head to head, square, triangular, circular, quarter overlap, half overlap, full overlap, double overlap and other overlap patterns.

Pipe supports may include:

thrust blocks

bedding

bracket spacing

corrosion protection

cover

manufacturer-recommended specific fixings

material requirements

provision for pipe movement.

Pump enclosure and control requirements may include:

acoustic performance

automatic change-over

automatic controls

dual-pump provision

impeller sizing

inlet and outlet design requirements

installation and mounting requirements

irrigation management control system

pressure gauges

pump contols

pump selection

pump sizing

pump housing

space requirements

valve requirements

variable speed control.

Installation requirements may include:

pipe connection:

bedding and backfilling

corrosion

cover

ground stability

impact

level of workmanship

manufacturer recommendations

pipe support

provision for pipe movement

serviceability and access.

Applications:

may include:

agricultural crops

garden irrigation

golf courses

greenhouses

lawn watering

local government parks

nurseries

sports ovals

should also cover:

individual crop water requirements

types of plants and their respective crop factors.

Delivery systems and layout may include:

main delivery

number and design of control stations

design includes:

avoiding obstacles

irregular shapes

minimising water wastage

range of irrigation applications

range pipes

ring mains

size and water delivery of sprinklers

sprinkler head patterns and placement.

Sustainability principles and concepts:

cover the current and future social, economic and environmental use of resources

may include:

selecting appropriate material to ensure minimal environmental impact

efficient use of material

efficient energy usage/capital outlay comparison

water efficiency

reuse of water, such as rainwater, grey water and recycled non-drinking water

consideration of the Green Building Council of Australia rating scheme.

Plans:

may include:

axonometrics

cross-sections

details

elevations

isometrics

schematics

sections

may be produced using:

computer generation

drawing equipment.

Specification may include:

bedding

flow requirements

irrigation management control system

jointing

manufacturer requirements

materials

pumps

residual pressures

safety (WHS)

specialised components

sprinkler head selection

storage tanks

support

testing

valve selection

water treatment

workmanship.

Testing may include:

defect inspection

hydrostatic

mains pressure

performance

quality assurance (QA) audit.

Commissioning schedule may include:

system certification

flow test

leak check

pressure test

system purge

system defect

system functions as per design

valve and system operation.

Operation and maintenance manual includes:

as installed drawings

results of commissioning test

certification documentation

maintenance schedules

manufacturer brochures and technical information

operational procedures

valve function.

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
Scope of work for irrigation systems is established. 
Design requirements are determined from relevant Australian standards, codes, plans, specifications and client brief. 
Cost-benefit analysis is conducted comparing a range of pipe materials and system designs. 
Statutory and regulatory requirements and relevant Australian standards and codes for the design of irrigation systems are interpreted, analysed and applied. 
Manufacturer requirementsand trade and technical manuals are interpreted. 
Additional research, including a desktop study, is conducted to outline design parameters. 
Flow and pressure tests are conducted. 
Water sources, volumes and areas to be irrigated are established. 
Soil typesare analysed and categorised, and impacts on irrigation systems are documented. 
Factors that contribute to quality, safety and time efficiency are determined. 
Performance requirements are established, considering safety of system users or building occupants. 

Forms

Assessment Cover Sheet

CPCPPS5027A - Design irrigation systems
Assessment task 1: [title]

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

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Assessment Record Sheet

CPCPPS5027A - Design irrigation systems

Student name:

Student ID:

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

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Overall assessment result: Competent Not yet competent

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