Assessor Resource

NWPTRT071
Operate and control pre-treatment processes

Assessment tool

Version 1.0
Issue Date: April 2024


This unit describes the skills required to monitor, operate and report on wastewater pre-treatment processes, including separation processes such as screens and grit removal, used in industrial or domestic wastewater treatment plants prior to biological treatments.

This unit applies to those working as operational staff with specific responsibility for pre-treatment processes.

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 environment, safety, and manufacturers' guidelines.

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 as outlined in standard operating procedures.

1.2 Identify and report potential risks to self, other employees, public and environment.

1.3 Select and check work site equipment, tools and safety materials as appropriate to meet task and safety specifications.

1.4 Select, fit and use personal protective equipment.

2. Monitor pretreatment processes

2.1 Carry out routine plant inspections.

2.2 Monitor processes to maintain parameters of operation.

2.3 Collect process samples and conduct standard tests.

2.4 Collect, record and report process data.

2.5 Identify and report process faults and operational condition of plant.

3. Operate pretreatment processes

3.1 Operate pre-treatment processes.

3.2 Carry out basic adjustments to enhance system performance.

3.3 Determine chemical dosing requirements

4. Complete documentation

4.1 Collect and record process data

4.2 Report observations outside defined parameters for further action.

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.

performing calculations including ratios

reading and applying procedures and standards

giving and receiving instructions

identifying control system faults and operational problems

using verbal and written communication in the workplace

monitoring, operating and reporting on wastewater pretreatment processes, including at least one of:

screening

gravity and aerated grit chambers

gross pollution traps

removal and disposal of screenings

shredding

odour removal

oily water separators

riffle plate separators

planning and preparing for work

collecting and labelling samples and performing tests including, at least one of:

settling tests

pH

dissolved oxygen

suspended solids

chemical oxygen demand

inspecting plant and monitoring processes

collecting and recording data

operating and adjusting processes, including at least one of:

pH correction

dissolved oxygen levels

flow control

screen rotation frequency

solids removal

chemical additions

plant performance data

chemical usage

recording all required information

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.

principles of and need for effective pre-treatment

system layout

policies, procedures and legislation applied to wastewater pre-treatment processes

relevant utilities and service bodies

communication systems

work-related calculations

risk factors and potential hazards relating to wastewater treatment

equipment operation, capacity and limitations

pumping and valving systems

control systems

impacts of hydraulic loads on processes

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.

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 as outlined in standard operating procedures.

1.2 Identify and report potential risks to self, other employees, public and environment.

1.3 Select and check work site equipment, tools and safety materials as appropriate to meet task and safety specifications.

1.4 Select, fit and use personal protective equipment.

2. Monitor pretreatment processes

2.1 Carry out routine plant inspections.

2.2 Monitor processes to maintain parameters of operation.

2.3 Collect process samples and conduct standard tests.

2.4 Collect, record and report process data.

2.5 Identify and report process faults and operational condition of plant.

3. Operate pretreatment processes

3.1 Operate pre-treatment processes.

3.2 Carry out basic adjustments to enhance system performance.

3.3 Determine chemical dosing requirements

4. Complete documentation

4.1 Collect and record process data

4.2 Report observations outside defined parameters for further action.

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.

performing calculations including ratios

reading and applying procedures and standards

giving and receiving instructions

identifying control system faults and operational problems

using verbal and written communication in the workplace

monitoring, operating and reporting on wastewater pretreatment processes, including at least one of:

screening

gravity and aerated grit chambers

gross pollution traps

removal and disposal of screenings

shredding

odour removal

oily water separators

riffle plate separators

planning and preparing for work

collecting and labelling samples and performing tests including, at least one of:

settling tests

pH

dissolved oxygen

suspended solids

chemical oxygen demand

inspecting plant and monitoring processes

collecting and recording data

operating and adjusting processes, including at least one of:

pH correction

dissolved oxygen levels

flow control

screen rotation frequency

solids removal

chemical additions

plant performance data

chemical usage

recording all required information

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.

principles of and need for effective pre-treatment

system layout

policies, procedures and legislation applied to wastewater pre-treatment processes

relevant utilities and service bodies

communication systems

work-related calculations

risk factors and potential hazards relating to wastewater treatment

equipment operation, capacity and limitations

pumping and valving systems

control systems

impacts of hydraulic loads on processes

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.

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 as outlined in standard operating procedures. 
Identify and report potential risks to self, other employees, public and environment. 
Select and check work site equipment, tools and safety materials as appropriate to meet task and safety specifications. 
Select, fit and use personal protective equipment. 
Carry out routine plant inspections. 
Monitor processes to maintain parameters of operation. 
Collect process samples and conduct standard tests. 
Collect, record and report process data. 
Identify and report process faults and operational condition of plant. 
Operate pre-treatment processes. 
Carry out basic adjustments to enhance system performance. 
Determine chemical dosing requirements 
Collect and record process data 
Report observations outside defined parameters for further action. 
Determine work requirements as outlined in standard operating procedures. 
Identify and report potential risks to self, other employees, public and environment. 
Select and check work site equipment, tools and safety materials as appropriate to meet task and safety specifications. 
Select, fit and use personal protective equipment. 
Carry out routine plant inspections. 
Monitor processes to maintain parameters of operation. 
Collect process samples and conduct standard tests. 
Collect, record and report process data. 
Identify and report process faults and operational condition of plant. 
Operate pre-treatment processes. 
Carry out basic adjustments to enhance system performance. 
Determine chemical dosing requirements 
Collect and record process data 
Report observations outside defined parameters for further action. 

Forms

Assessment Cover Sheet

NWPTRT071 - Operate and control pre-treatment 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:

Signature:

Date:

Assessment Record Sheet

NWPTRT071 - Operate and control pre-treatment 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: