Modification History
NWP407A Release 2: Layout adjusted. No changes to content.
NWP407A Release 1: Primary release.
Unit Descriptor
This unit of competency describes the outcomes required to evaluate system performance and investigate and report on optimisation of dissolved air flotation (DAF) processes.
Application of the Unit
This unit is required by technical staff in water treatment with a specific responsibility for optimising dissolved air flotation (DAF) processes in water or wastewater treatment plants. This role may be performed as a single operator or as part of a team with some responsibility for team coordination and supervision depending on the size of the treatment plant.
Licensing/Regulatory Information
Not applicable.
Pre-Requisites
Not applicable.
Employability Skills Information
This unit contains employability skills.
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
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 statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1 Evaluate dissolved air flotation process performance . |
1.1 Review existing process performance data against relevant organisational or legislative requirements . 1.2 Review existing operational processes with reference to manufacturers' or plant designers' specifications . 1.3 Identify the impact of incoming water quality on dissolved air flotation processes as required. 1.4 Identify and coordinate any additional sampling and testing required for valid evaluation of current process performance. |
2 Investigate dissolved air flotation asset operation . |
2.1 Review existing fault reports and other relevant plant asset information. 2.2 Evaluate the operational status of plant components against manufacturers' and plant designers' specifications. |
3 Investigate options for process optimisation . |
3.1 Review relevant fault and incident reports and take remedial actions. 3.2 Investigate potential changes to operational processes to identify possible optimisation strategies. |
4 Plan process optimisation . |
4.1 Determine plant configuration and revised operational processes for process optimisation. 4.2 Plan a trial to test the performance of the determined optimisation options. 4.3 Compile a report making recommendations on optimisation options. |
Required Skills and Knowledge
This section describes the skills and knowledge required for this unit. |
Required skills :
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Required knowledge :
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Evidence Guide
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. |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
The candidate should demonstrate the ability to evaluate system performance and investigate and report on optimisation of dissolved air flotation (DAF) processes including:
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Context of and specific resources for assessment |
Access to the workplace and resources, including:
Where applicable, physical resources should include equipment modified for people with disabilities. Access must be provided to appropriate learning and assessment support when required. Assessment processes and techniques must be culturally appropriate, and appropriate to the language and literacy capacity of the candidate and the work being performed. Validity and sufficiency of evidence requires that:
In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge. Questioning will be undertaken in a manner appropriate to the skill levels of the operator and cultural issues that may affect responses to the questions, and will reflect the requirements of the competency and the work being performed. |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
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Organisational or legislative requirements may include: |
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Processes may include: |
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Manufacturers' and plant designers' specifications may include: |
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Incoming water quality may include: |
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Testing may include: |
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Plant components may include: |
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Potential changes to operational processes may include: |
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Unit Sector(s)
Not applicable.
Competency field
Treatment.