Assessor Resource

AHCWAT501
Design water treatment systems

Assessment tool

Version 1.0
Issue Date: March 2024


This unit of competency describes the skills and knowledge required to design water treatment systems.

It applies to individuals who analyse information and exercise judgement to complete a range of advanced skilled activities and demonstrate deep knowledge in a specific technical area. They have accountability for the work of others and analyse, design and communicate solutions to a range of complex problems. All work is carried out to comply with workplace procedures.

No occupational licensing, legislative or certification requirements are known to apply to this unit at the time of publication.

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



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.

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine design requirements

1.1 Determine the quality of water to be treated and level of treatment required

1.2 Develop construction specifications that define the work required to treat water

1.3 Identify and protect environmentally sensitive areas

1.4 Document design calculations and decisions

2. Define pumping and power systems

2.1 Select pumps to treat water efficiently and effectively as required and to enable supply at the flow and the pressure required to operate the distribution system

2.2 Confirm that the pump motor combinations are efficient and the pumps are reliable, functional, serviceable and flexible for the intended application

2.3 Calculate energy requirements and determine the layout of electricity lines and check with local authority

2.4 Optimise the relationship between capital and operational costs including a comparison of energy sources

2.5 Select structures, valves and accessories and integrate into a functional system that can be monitored and maintained

2.6 Document performance indicators, design calculations and decisions

2.7 Develop construction specifications that define the work required to make a suitable pumping and power system

2.8 Check power supply design specification with power authorities

3. Design an water treatment system

3.1 Evaluate and design treatment systems with respect to a range of key variables

3.2 Size pipes, valves and fittings according to design system specifications so that capital cost is balanced against operation costs over the anticipated system life

3.3 Calculate and document flows, water levels and pressures to be within the acceptable tolerances for optimum performance

3.4 Confirm that flows, water levels and pressures are achievable by the pumps operating at optimum efficiency

3.5 Include mechanisms for controlling and adjusting pressure

4. Determine capital expense budget

4.1 Document design calculations and decisions and collate plans, specifications and manuals

4.2 Organise a check of the design output by a competent designer

4.3 Determine and document materials required from plans and specifications

4.4 Estimate labour requirements based on documented work schedule, with reasonable allowance for variances in work schedules

4.5 Confirm that costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements

5. Determine operating expense budget

5.1 Confirm that operating expense budget indicates all expenses applicable to the completed system

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence that they can:

collect and analyse information

develop water treatment system specifications

identify adverse environmental impacts of water treatment activities and remedial action

identify design requirements

The candidate must demonstrate knowledge of:

principles and practices of water treatment system design

automatic control and monitoring systems

budgeting, contractual development and obligations

cost/benefit analysis

design processes

developments in water treatment technology

enterprise policies and procedures

environmental impacts of water treatment

environmental protection agency regulations

waste management and environmental issues

Assessors must satisfy current standards for RTOs.


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.

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine design requirements

1.1 Determine the quality of water to be treated and level of treatment required

1.2 Develop construction specifications that define the work required to treat water

1.3 Identify and protect environmentally sensitive areas

1.4 Document design calculations and decisions

2. Define pumping and power systems

2.1 Select pumps to treat water efficiently and effectively as required and to enable supply at the flow and the pressure required to operate the distribution system

2.2 Confirm that the pump motor combinations are efficient and the pumps are reliable, functional, serviceable and flexible for the intended application

2.3 Calculate energy requirements and determine the layout of electricity lines and check with local authority

2.4 Optimise the relationship between capital and operational costs including a comparison of energy sources

2.5 Select structures, valves and accessories and integrate into a functional system that can be monitored and maintained

2.6 Document performance indicators, design calculations and decisions

2.7 Develop construction specifications that define the work required to make a suitable pumping and power system

2.8 Check power supply design specification with power authorities

3. Design an water treatment system

3.1 Evaluate and design treatment systems with respect to a range of key variables

3.2 Size pipes, valves and fittings according to design system specifications so that capital cost is balanced against operation costs over the anticipated system life

3.3 Calculate and document flows, water levels and pressures to be within the acceptable tolerances for optimum performance

3.4 Confirm that flows, water levels and pressures are achievable by the pumps operating at optimum efficiency

3.5 Include mechanisms for controlling and adjusting pressure

4. Determine capital expense budget

4.1 Document design calculations and decisions and collate plans, specifications and manuals

4.2 Organise a check of the design output by a competent designer

4.3 Determine and document materials required from plans and specifications

4.4 Estimate labour requirements based on documented work schedule, with reasonable allowance for variances in work schedules

4.5 Confirm that costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements

5. Determine operating expense budget

5.1 Confirm that operating expense budget indicates all expenses applicable to the completed system

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence that they can:

collect and analyse information

develop water treatment system specifications

identify adverse environmental impacts of water treatment activities and remedial action

identify design requirements

The candidate must demonstrate knowledge of:

principles and practices of water treatment system design

automatic control and monitoring systems

budgeting, contractual development and obligations

cost/benefit analysis

design processes

developments in water treatment technology

enterprise policies and procedures

environmental impacts of water treatment

environmental protection agency regulations

waste management and environmental issues

Assessors must satisfy current standards for RTOs.

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
Determine the quality of water to be treated and level of treatment required 
Develop construction specifications that define the work required to treat water 
Identify and protect environmentally sensitive areas 
Document design calculations and decisions 
Select pumps to treat water efficiently and effectively as required and to enable supply at the flow and the pressure required to operate the distribution system 
Confirm that the pump motor combinations are efficient and the pumps are reliable, functional, serviceable and flexible for the intended application 
Calculate energy requirements and determine the layout of electricity lines and check with local authority 
Optimise the relationship between capital and operational costs including a comparison of energy sources 
Select structures, valves and accessories and integrate into a functional system that can be monitored and maintained 
Document performance indicators, design calculations and decisions 
Develop construction specifications that define the work required to make a suitable pumping and power system 
Check power supply design specification with power authorities 
Evaluate and design treatment systems with respect to a range of key variables 
Size pipes, valves and fittings according to design system specifications so that capital cost is balanced against operation costs over the anticipated system life 
Calculate and document flows, water levels and pressures to be within the acceptable tolerances for optimum performance 
Confirm that flows, water levels and pressures are achievable by the pumps operating at optimum efficiency 
Include mechanisms for controlling and adjusting pressure 
Document design calculations and decisions and collate plans, specifications and manuals 
Organise a check of the design output by a competent designer 
Determine and document materials required from plans and specifications 
Estimate labour requirements based on documented work schedule, with reasonable allowance for variances in work schedules 
Confirm that costing attributed to each component is based upon quoted information from suppliers, or sound analysis of individual elements 
Confirm that operating expense budget indicates all expenses applicable to the completed system 

Forms

Assessment Cover Sheet

AHCWAT501 - Design water treatment 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

AHCWAT501 - Design water treatment 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: