Assessor Resource

NWPTRT055
Operate chlorine dioxide processes

Assessment tool

Version 1.0
Issue Date: April 2024


This unit describes the skills required to monitor and operate chlorine dioxide systems and to report on process quality control.

This unit applies to those working as operational staff with specific responsibility for ensuring chlorine dioxide system processes comply with organisational requirements.

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, particularly those relating to WHS and hazardous substance handling.

Those undertaking this unit would work under supervision while performing routine tasks in a range of familiar contexts.

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 for work

1.1 Determine work requirements from standard operating procedures.

1.2 Select and check equipment and tools required to meet safety requirements of task and site.

1.3 Select, fit and use personal protective equipment.

2. Monitor system performance

2.1 Monitor chlorine dioxide processes.

2.2 Collect process samples and conduct standard tests.

2.3 Maintain and monitor relevant WHS requirements.

3. Prepare and apply chemical dosing

3.1 Handle, use and store chemicals.

3.2 Prepare chemical dosing.

3.3 Maintain information relating to chemical supply and usage according to statutory requirements.

4. Complete documentation

4.1 Collect and report process data.

4.2 Review information and contribute to enterprise processes for continuous improvement and incident management.

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

applying policies, regulatory standards and standard operating procedures

giving and receiving instructions

performing chlorine dioxide calculations

identifying control system faults and operational problems

identifying hazards

conducting microbiological and chlorine dioxide residual sampling

using literacy skills in regard to verbal and written communication in the workplace

interpreting material safety data sheets (SDS)

scheduling work

selecting and using appropriate tools and equipment, including personal protective equipment

monitoring chlorine dioxide disinfection processes

collecting process samples and performing standard tests

collecting and reporting process data, including at least one of:

pH

chlorine dioxide residuals

preparing and applying chemical dosing, including at least one of:

pH adjustment (lime, soda ash or caustic)

generation of chlorine dioxide (sodium chlorite, hydrochloric acid, sodium hypochlorite and/or liquefied chlorine)

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.

properties and chemistry of chlorine dioxide

pH

microbiological water quality guidelines

chlorine dioxide system layout

lockout procedures for mechanical and electrical installations

policies, standard operating procedures and legislation

communication systems

hazardous substances handling

risk factors and potential hazards associated with chlorine dioxide

work-related chlorine dioxide calculations

chlorine dioxide dosing processes

chlorine dioxide generation equipment operation, capacity and limitations

effects of weather and conditions on operation of site or plant

pumping and valving systems

automatic feed rate control systems

SDS

understanding of the risk management principles of ADWG and/or AGWR

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 is assessed across a variety of situations.

Some components of this unit require assessment in a workplace environment therefore the unit is not suitable for fully external or electronic based assessment.

Consideration must be given to holistic assessment for this unit. Refer to advice in the companion volumes.

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 for work

1.1 Determine work requirements from standard operating procedures.

1.2 Select and check equipment and tools required to meet safety requirements of task and site.

1.3 Select, fit and use personal protective equipment.

2. Monitor system performance

2.1 Monitor chlorine dioxide processes.

2.2 Collect process samples and conduct standard tests.

2.3 Maintain and monitor relevant WHS requirements.

3. Prepare and apply chemical dosing

3.1 Handle, use and store chemicals.

3.2 Prepare chemical dosing.

3.3 Maintain information relating to chemical supply and usage according to statutory requirements.

4. Complete documentation

4.1 Collect and report process data.

4.2 Review information and contribute to enterprise processes for continuous improvement and incident management.

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

applying policies, regulatory standards and standard operating procedures

giving and receiving instructions

performing chlorine dioxide calculations

identifying control system faults and operational problems

identifying hazards

conducting microbiological and chlorine dioxide residual sampling

using literacy skills in regard to verbal and written communication in the workplace

interpreting material safety data sheets (SDS)

scheduling work

selecting and using appropriate tools and equipment, including personal protective equipment

monitoring chlorine dioxide disinfection processes

collecting process samples and performing standard tests

collecting and reporting process data, including at least one of:

pH

chlorine dioxide residuals

preparing and applying chemical dosing, including at least one of:

pH adjustment (lime, soda ash or caustic)

generation of chlorine dioxide (sodium chlorite, hydrochloric acid, sodium hypochlorite and/or liquefied chlorine)

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.

properties and chemistry of chlorine dioxide

pH

microbiological water quality guidelines

chlorine dioxide system layout

lockout procedures for mechanical and electrical installations

policies, standard operating procedures and legislation

communication systems

hazardous substances handling

risk factors and potential hazards associated with chlorine dioxide

work-related chlorine dioxide calculations

chlorine dioxide dosing processes

chlorine dioxide generation equipment operation, capacity and limitations

effects of weather and conditions on operation of site or plant

pumping and valving systems

automatic feed rate control systems

SDS

understanding of the risk management principles of ADWG and/or AGWR

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 is assessed across a variety of situations.

Some components of this unit require assessment in a workplace environment therefore the unit is not suitable for fully external or electronic based assessment.

Consideration must be given to holistic assessment for this unit. Refer to advice in the companion volumes.

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 standard operating procedures. 
Select and check equipment and tools required to meet safety requirements of task and site. 
Select, fit and use personal protective equipment. 
Monitor chlorine dioxide processes. 
Collect process samples and conduct standard tests. 
Maintain and monitor relevant WHS requirements. 
Handle, use and store chemicals. 
Prepare chemical dosing. 
Maintain information relating to chemical supply and usage according to statutory requirements. 
Collect and report process data. 
Review information and contribute to enterprise processes for continuous improvement and incident management. 
Determine work requirements from standard operating procedures. 
Select and check equipment and tools required to meet safety requirements of task and site. 
Select, fit and use personal protective equipment. 
Monitor chlorine dioxide processes. 
Collect process samples and conduct standard tests. 
Maintain and monitor relevant WHS requirements. 
Handle, use and store chemicals. 
Prepare chemical dosing. 
Maintain information relating to chemical supply and usage according to statutory requirements. 
Collect and report process data. 
Review information and contribute to enterprise processes for continuous improvement and incident management. 

Forms

Assessment Cover Sheet

NWPTRT055 - Operate chlorine dioxide processes
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:

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Date:

Assessment Record Sheet

NWPTRT055 - Operate chlorine dioxide processes

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: