Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

AHCDRG501A Mapping and Delivery Guide
Design drainage systems

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency AHCDRG501A - Design drainage systems
Description This unit covers the process of identifying design requirements, determining specifications for drainage systems, and designing drainage systems and defines the standard required to: develop specifications for water transfer, recharge, reuse and harvesting systems; assess the requirements for pumping capacity in a drainage system and power requirements; identify performance indicators for the drainage system; predict volumes and rates of surface run-off and system leakage; design a drainage system that factors in the characteristics of the irrigated landscape and soil.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit applies to enterprise managers and technical design personnel who identify design requirements, determine specifications for drainage systems and design drainage systems.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Determine design requirements
  • Water transfer, recharge, reuse and harvesting systems are designed to conserve natural resources.
  • The process of collecting or storing water does not degrade the water quality for the enterprise or the environment.
  • Construction specifications define the work required to make suitable water available to the enterprise in accordance with environmental and Occupational Health and Safety (OHS) requirements.
  • Environmentally sensitive areas are identified and protected according to local, State and National legislation.
  • Design calculations and decisions are documented to enterprise requirements.
       
Element: Define pumping and power systems
  • Pumps are selected to move water efficiently when needed to water storage or treatment, at the flow and pressure required to design specifications.
  • The pump motor combinations are efficient, and the pumps are reliable, functional, serviceable and flexible for the intended application.
  • Energy requirements are determined, and layout of electricity lines are determined and checked with local authority.
  • The relationship between capital and operational costs are optimised including a comparison of energy sources.
  • Structures, valves and accessories are selected and integrated into a functional system that can be monitored and maintained according to enterprise guidelines.
  • Performance indicators, design calculations and decisions are documented according to enterprise guidelines.
  • Construction specifications define work required to make suitable pumping and power system available to enterprise.
  • Power supply design specification is checked with power authorities.
       
Element: Design a drainage system
  • Regional geology and geography is investigated to predict drainage parameters.
  • Site investigations to assess depth of clay, depth of ground water, soil and water salinity, and structural or chemical impediments are used to determine the most cost effective drainage system.
  • Predictions of leaching fractions and salt movements are documented, and soil amelioration and drainage management plans are developed.
  • The need for leachate interception and dewatering system is determined and if required, construction specification prepared for interception and collection, disposal, reuse or recycle.
  • Drains and structures are capable of carrying the design water volumes and intensities according to enterprise standards.
  • Damage from water logging is minimised according to enterprise standards.
  • Hydrological calculations predict volumes and rates of surface run-off according to enterprise standards.
       
Element: Determine capital expense budget
  • Design calculations and decisions are documented and relevant information is communicated clearly through plans, specifications and manuals.
  • Design output is checked by a competent designer against enterprise objectives.
  • Materials requirements are determined and documented from plans and specifications.
  • Labour requirements are estimated based upon documented work schedule with reasonable allowance for variances in work schedules.
  • Costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements.
       
Element: Determine operating expense budge
  • Operating expense budget indicates all expenses applicable to the completed drainage system.
       


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:

develop specifications for water transfer, recharge, reuse and harvesting systems

assess the requirements for pumping capacity in a drainage system and power requirements

identify performance indicators for the drainage system

predict volumes and rates of surface run-off and system leakage

design a drainage system that factors in the characteristics of the irrigated landscape and soil.

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, assignment, 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

collect and analyse information

identify adverse environmental impacts of drainage and appropriate remedial action

identify design requirements

complete hydrological calculations

develop specifications

develop budgets

develop and implement relevant enterprise OHS and environmental procedures

use literacy skills to fulfil job roles as required by the organisation. The level of skill may range from reading and understanding documentation to completion of written reports

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 numeracy skills to estimate, calculate and record complex workplace measures

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

design processes

developments in drainage technology

leaching fractions and salt movements prediction

monitoring systems

waste management and environmental issues

purpose of leachate interception and dewatering systems

budgeting, contractual development and obligations

environmental impacts of drainage

cost/benefit analysis

enterprise policies and procedures

water transfer, recharge, reuse and harvesting systems.

OHS and environmental protection legislation.

The range statement relates to the unit of competency as a whole.

Irrigation system types may include:

flood

furrow

micro-sprinklers

pop-ups

impact sprinklers

low-level lines

overhead sprinklers

drippers

micro-jets.

Irrigated systems may involve:

water harvesting

delivery

drainage collection

drainage storage and treatment as well as natural drainage and treatment systems involving the removal of pollutants through evaporation, and/or clearance by filtration through surface layers.

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
Water transfer, recharge, reuse and harvesting systems are designed to conserve natural resources. 
The process of collecting or storing water does not degrade the water quality for the enterprise or the environment. 
Construction specifications define the work required to make suitable water available to the enterprise in accordance with environmental and Occupational Health and Safety (OHS) requirements. 
Environmentally sensitive areas are identified and protected according to local, State and National legislation. 
Design calculations and decisions are documented to enterprise requirements. 
Pumps are selected to move water efficiently when needed to water storage or treatment, at the flow and pressure required to design specifications. 
The pump motor combinations are efficient, and the pumps are reliable, functional, serviceable and flexible for the intended application. 
Energy requirements are determined, and layout of electricity lines are determined and checked with local authority. 
The relationship between capital and operational costs are optimised including a comparison of energy sources. 
Structures, valves and accessories are selected and integrated into a functional system that can be monitored and maintained according to enterprise guidelines. 
Performance indicators, design calculations and decisions are documented according to enterprise guidelines. 
Construction specifications define work required to make suitable pumping and power system available to enterprise. 
Power supply design specification is checked with power authorities. 
Regional geology and geography is investigated to predict drainage parameters. 
Site investigations to assess depth of clay, depth of ground water, soil and water salinity, and structural or chemical impediments are used to determine the most cost effective drainage system. 
Predictions of leaching fractions and salt movements are documented, and soil amelioration and drainage management plans are developed. 
The need for leachate interception and dewatering system is determined and if required, construction specification prepared for interception and collection, disposal, reuse or recycle. 
Drains and structures are capable of carrying the design water volumes and intensities according to enterprise standards. 
Damage from water logging is minimised according to enterprise standards. 
Hydrological calculations predict volumes and rates of surface run-off according to enterprise standards. 
Design calculations and decisions are documented and relevant information is communicated clearly through plans, specifications and manuals. 
Design output is checked by a competent designer against enterprise objectives. 
Materials requirements are determined and documented from plans and specifications. 
Labour requirements are estimated based upon documented work schedule with reasonable allowance for variances in work schedules. 
Costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements. 
Operating expense budget indicates all expenses applicable to the completed drainage system. 

Forms

Assessment Cover Sheet

AHCDRG501A - Design drainage systems
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

AHCDRG501A - Design drainage systems

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: