NTISthis.com

Evidence Guide: AHCIRG410A - Select and manage pumping systems for irrigation

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

 

AHCIRG410A - Select and manage pumping systems for irrigation

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

Identify irrigation system requirements from the irrigation design

  1. The components for an irrigation pumping system are identified
  2. The water source and height of pull for water into the system are determined
  3. The water output for irrigation is determined
  4. The total friction loss of irrigation components is calculated
The components for an irrigation pumping system are identified

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The water source and height of pull for water into the system are determined

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The water output for irrigation is determined

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The total friction loss of irrigation components is calculated

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Select pump according to type, installation, range of flow rates, operating head and delivery distance

  1. The basic type of pump is selected based on the pump task and placement and the power source
  2. The total operating head required is calculated
  3. The required discharge for the pump is calculated based on the irrigation output required and friction losses in the system
  4. The speed and power requirements of the pump motor are determined
  5. The limiting suction lift of the pump is determined
  6. Pump performance curves are interpreted in selecting an efficient irrigation pump
  7. Size of impeller is determined from the pump curve
The basic type of pump is selected based on the pump task and placement and the power source

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The total operating head required is calculated

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The required discharge for the pump is calculated based on the irrigation output required and friction losses in the system

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The speed and power requirements of the pump motor are determined

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The limiting suction lift of the pump is determined

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump performance curves are interpreted in selecting an efficient irrigation pump

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Size of impeller is determined from the pump curve

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Install pumps

  1. Pump is sited as close as possible to water source and level
  2. Suction and delivery pipes are attached correctly
  3. Pump connections are airtight
  4. The pump is anchored on a base
  5. Pump and motor connection are correctly aligned
  6. Ventilation is provided for the motor
Pump is sited as close as possible to water source and level

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Suction and delivery pipes are attached correctly

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump connections are airtight

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

The pump is anchored on a base

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump and motor connection are correctly aligned

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Ventilation is provided for the motor

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Filters and valves are fitted and valves are correctly oriented

  1. Pump is connected to the irrigation controller if required
Pump is connected to the irrigation controller if required

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Commission and test irrigation pumps

  1. Procedures are developed and implemented for carrying out pre-start checks
  2. Pump start up procedures are developed and implemented
  3. Pumps are pressure tested to check delivery performance
  4. Power usage and water output is checked against requirements and pump specifications
  5. Pumping system is checked for leakages and cavitation
  6. Pump control systems are checked for accurate operation
Procedures are developed and implemented for carrying out pre-start checks

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump start up procedures are developed and implemented

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pumps are pressure tested to check delivery performance

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Power usage and water output is checked against requirements and pump specifications

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pumping system is checked for leakages and cavitation

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump control systems are checked for accurate operation

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Develop maintenance procedures for the pumping system

  1. Routine maintenance procedures are developed to rectify the effects of normal wear
  2. Periodic inspection checklists are developed to assist in maintenance scheduling
  3. Pump overhaul or repairs are carried out
  4. A pump maintenance record is kept, including details of the pump and all pumping system components for ordering
Routine maintenance procedures are developed to rectify the effects of normal wear

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Periodic inspection checklists are developed to assist in maintenance scheduling

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Pump overhaul or repairs are carried out

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

A pump maintenance record is kept, including details of the pump and all pumping system components for ordering

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Carry out troubleshooting on pumping systems

  1. Lack of discharge and/or pressure are investigated and settings or components changed
  2. Loss of water suction is investigated and alteration made to placement or leakages fixed
  3. Cavitation in pumps is investigated and settings or components changed
  4. Excessive power consumption is investigated and design and pump selection reviewed and checks made for mechanical defects
Lack of discharge and/or pressure are investigated and settings or components changed

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Loss of water suction is investigated and alteration made to placement or leakages fixed

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Cavitation in pumps is investigated and settings or components changed

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Excessive power consumption is investigated and design and pump selection reviewed and checks made for mechanical defects

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

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:

select pumps and pumping equipment to meet design requirements

install and test pumps

develop procedures to maintain pumping systems

commission and test the pumping system

carry out troubleshooting.

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.

Required Skills and Knowledge

Required skills include:

Ability to:

interpret pump curves

calculate pumping requirements

select pumps, filters and valves

calculate pressure loss due to irrigation components

position pumps, valves and filters

open and closing valves

pressure test pumps

monitor performance of pumps, valves and filters

service, maintain and replace pumps, valves and filters

use pressure testing equipment

use recorded information to review energy and water efficiency for an irrigation system

identify adverse environmental impacts of irrigation pumping activities and appropriate remedial action

implement and follow relevant enterprise OHS and environmental policies and procedures.

Required knowledge includes:

Knowledge of:

the relevant statutory and authority requirements related to the installation of commissioning domestic irrigation pumps

levelling and alignment processes

the application of mechanical, hydraulic and electrical principles

properties of water including pressure and flow rates

selection factors for pumps

source of water and lift

the required pumping flow rate and pressure

the total suction head

the total dynamic head

types of pumps and application in irrigation

centrifugal

vertical turbine

submersible

propeller

advantages and disadvantages of each pump type

types suitable as booster and floating pumps

pump power requirements

discharge and flow rates

pump efficiency

minimum pressures for emitters and sprinkler heads

types of impellers and their use

cavitation - cause and effect

net positive suction head (NPSH)

pump positioning (driver alignment and suction length)

pump components and their principles of operation

pump gauges and controls

types of valves

automatic pump switches

timers

pressure switches

irrigation controllers

flow switches

installation factors

adequate space, head room, ventilation and lighting

correct alignment procedures of pump and motor shafts with direct coupled units

provision for adjustment and ease of dismantling

priming and operating pumps

pump performance and pressure testing

the sources of information and the processes for the calculation of material requirements and flow rates

the process of installing and commissioning domestic irrigation pumps

routine preventative maintenance

overhaul or repair operations

environmental procedures for installing and maintaining irrigation pumping systems

OHS legislation.

Range Statement

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 pumping systems may include:

all types of pumps and components (including filters and valves) used to move water to or through an irrigation system.

Types of pumps may include:

centrifugal (belt driven or coupled)

volute

diffuser

turbine

mixed flow

axial flow

radial flow propeller

electro-submersible

rotary

gear

lobe

screw

vane

reciprocating

piston

plunger

simplex

duplex

multiplex.

Types of valves may include:

air release valves

air replenishment valves

backflow prevention valves

ball valves

butterfly valves

check valves

float valves

flow control valves

flow measuring vlaves

foot valves

gate valves

globe valves

pressure regulating valves

pressure relief valves

Schrader valves

scour valves

solenoid valves (pilot operated or direct acting).

Types of filters may include:

centrifugal sand filters

media filters

screen or disc filters.

Irrigation controllers may include:

a range from simple time switches operating a single valve to programmable controllers operating a large number of valves on a complex schedule.