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 job specifications and plans. 1.2 Select and check equipment to meet safety requirements of task and site. 1.3 Select, fit and use personal protective equipment. |
2. Operate and control process | 2.1 Carry out routine inspection on assets. 2.2 Collect process samples. 2.3 Carry out routine tests. 2.4 Identify and report process faults and operational condition of assets. 2.5 Carry out basic process adjustments to enhance process performance. 2.6 Monitor processes to maintain parameters of operation. |
3. Complete documentation | 3.1 Collect, record and complete process data. 3.2 Identify data that falls outside normal parameters and report for further action. |
Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed in at least one of the DAF processes listed in the Range of Conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on least one occasion.
identifying reporting faults
completing logs
performing process calculations including:
recycle ratio
hydraulic loading rate
preparing and applying chemical dosing
monitoring test results and processes
conducting routine plant inspections
taking samples, adjusting dosing and performing basic tests, including at least one of:
pH
flotation tests
colour
turbidity
solids
jar testing
making basic process adjustments according to instructions, including at least one of:
saturator pressure
water level and flow rate
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.
features and components of dissolved air flotation systems, including:
valves
recycle pumps
compressor
saturator
float removal mechanism
dispersion valves
cutting sprays
making basic process adjustments according to instructions, including:
air loading
recycle flow rates
saturated pressure
detention time
float removal frequency
intended plant configuration
water quality impacts or mixed liquor characteristics, including:
turbidity
colour
presence of algae
temperature
suspended solids
types of dissolved air flotation processes, including:
dissolved air flotation
dissolved air flotation filtration (DAFF)
dissolved air flotation sludge thickening
range of appropriate measuring and testing procedures, including:
turbidity
true colour
float solids content
chemicals used for coagulation and flocculation or thickening
theory of process operations, including:
dissolved air flotation/clarification
dissolved air flotation/filtration
dissolved air flotation/sludge thickening
Candidate should demonstrate basic knowledge of all processes listed in Range of Conditions.
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.
Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.