Assessor Resource

NWPNET001
Disinfect network assets

Assessment tool

Version 1.0
Issue Date: April 2024


This unit describes the skills required to disinfect network assets including where additional disinfection of the supply is required. This includes planning and preparing the work site and performing volumetric calculations.

This unit applies to those working as field and operational staff with responsibility for the operation and maintenance of chemical dosing equipment.

The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to.

Those undertaking this unit would work independently under indirect supervision while performing routine tasks with a moderate level of complexity in a familiar context.

No licensing, legislative or certification requirements apply to 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.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section.

1. Plan and prepare work

1.1 Determine work requirements from specifications, instructions and pre-work inspections.

1.2 Conduct risk assessment for environment, safety and water quality factors.

1.3 Select and check equipment and personal protective equipment to meet safety requirements of task and site.

1.4 Determine size of area to be disinfected.

1.5 Perform calculations to establish dose rate and target residual and contact time.

2. Conduct disinfection

2.1 Set up equipment at injection point.

2.2 Commence dosing at predetermined dose rate.

2.3 Perform residual measurement to ensure the target residual is being met.

2.4 Achieve contact time and stop dosing.

2.5 Operate the dosing equipment.

3. Finalise work

3.1 Collect samples ensuring that types, locations and times comply with requirements.

3.2 Prepare samples for laboratory testing according to requirements.

3.3 Check, maintain and store equipment, tools and materials.

3.4 Restore the worksite and complete and submit workplace records.

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed on at least one of the network assets within the Range of Conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

conducting risk assessment

performing volumetric calculations

operating network mains

operating control valves and pump stations

handling of chlorine in different forms, including at least one of:

gas

liquid

solid

operating and maintaining chemical dosing equipment

operating of analytical equipment

reading maps and diagrams

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.

safe limits of disinfectant residual

water network operation

principles of chlorination and chloramination

basic water chemistry

interrogation of SCADA system

Competency should be assessed in an actual workplace or in a simulated environment, with access to equipment and infrastructure appropriate to the outcome. Competency should be demonstrated over time to ensure the candidate.

Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.

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.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section.

1. Plan and prepare work

1.1 Determine work requirements from specifications, instructions and pre-work inspections.

1.2 Conduct risk assessment for environment, safety and water quality factors.

1.3 Select and check equipment and personal protective equipment to meet safety requirements of task and site.

1.4 Determine size of area to be disinfected.

1.5 Perform calculations to establish dose rate and target residual and contact time.

2. Conduct disinfection

2.1 Set up equipment at injection point.

2.2 Commence dosing at predetermined dose rate.

2.3 Perform residual measurement to ensure the target residual is being met.

2.4 Achieve contact time and stop dosing.

2.5 Operate the dosing equipment.

3. Finalise work

3.1 Collect samples ensuring that types, locations and times comply with requirements.

3.2 Prepare samples for laboratory testing according to requirements.

3.3 Check, maintain and store equipment, tools and materials.

3.4 Restore the worksite and complete and submit workplace records.

Network assets include:

network mains and services

network storages

bores

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed on at least one of the network assets within the Range of Conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

conducting risk assessment

performing volumetric calculations

operating network mains

operating control valves and pump stations

handling of chlorine in different forms, including at least one of:

gas

liquid

solid

operating and maintaining chemical dosing equipment

operating of analytical equipment

reading maps and diagrams

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.

safe limits of disinfectant residual

water network operation

principles of chlorination and chloramination

basic water chemistry

interrogation of SCADA system

Competency should be assessed in an actual workplace or in a simulated environment, with access to equipment and infrastructure appropriate to the outcome. Competency should be demonstrated over time to ensure the candidate.

Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.

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 work requirements from specifications, instructions and pre-work inspections. 
Conduct risk assessment for environment, safety and water quality factors. 
Select and check equipment and personal protective equipment to meet safety requirements of task and site. 
Determine size of area to be disinfected. 
Perform calculations to establish dose rate and target residual and contact time. 
Set up equipment at injection point. 
Commence dosing at predetermined dose rate. 
Perform residual measurement to ensure the target residual is being met. 
Achieve contact time and stop dosing. 
Operate the dosing equipment. 
Collect samples ensuring that types, locations and times comply with requirements. 
Prepare samples for laboratory testing according to requirements. 
Check, maintain and store equipment, tools and materials. 
Restore the worksite and complete and submit workplace records. 
Determine work requirements from specifications, instructions and pre-work inspections. 
Conduct risk assessment for environment, safety and water quality factors. 
Select and check equipment and personal protective equipment to meet safety requirements of task and site. 
Determine size of area to be disinfected. 
Perform calculations to establish dose rate and target residual and contact time. 
Set up equipment at injection point. 
Commence dosing at predetermined dose rate. 
Perform residual measurement to ensure the target residual is being met. 
Achieve contact time and stop dosing. 
Operate the dosing equipment. 
Collect samples ensuring that types, locations and times comply with requirements. 
Prepare samples for laboratory testing according to requirements. 
Check, maintain and store equipment, tools and materials. 
Restore the worksite and complete and submit workplace records. 

Forms

Assessment Cover Sheet

NWPNET001 - Disinfect network assets
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

NWPNET001 - Disinfect network assets

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: