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.