Application
This unit describes the skills required to operate and control iron and manganese removal processes. The ability to identify faults, apply basic process adjustments, according to instructions, and report on the process is essential to performance.
This unit applies to those working as operational staff in treatment.
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.
Those undertaking this unit would work under supervision, performing routine tasks, within a familiar context.
No licensing, legislative or certification requirements apply to unit at the time of publication.
Elements and Performance Criteria
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 required 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 when required. 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 process to maintain parameters of operation. |
3. Report on process | 3.1 Collect, interpret, record and complete process data. 3.2 Identify data that falls outside normal parameters and report for further action. |
Evidence of Performance
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 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 and reporting faults
completing logs
preparing and applying chemical dosing
monitoring test results and processes
conducting routine process inspections
taking samples and performing basic tests including at least either jar testing or iron and manganese analyses
applying basic process formulae including at least either chemical dosage or detention time
making basic process adjustments according to instructions including at least one of:
dosage
flow rate
detention time
pH
Evidence of Knowledge
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.
chemical forms and occurrence of iron and manganese
impact of stratification in reservoirs
problems associated with iron and manganese in drinking water systems
chemistry of common oxidation removal processes including aeration, chlorination, potassium permanganate
manganese coated filtration removal processes including greensand
ion exchange removal processes
sequestering with polyphosphates
chemical dosing processes
Assessment Conditions
Competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace, the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice.
Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.
Foundation Skills
The foundation skills demands of this unit have been mapped for alignment with the Australian Core Skills Framework (ACSF). The following tables outline the performance levels indicated for successful attainment of the unit.
Further information on ACSF and the foundation skills underpinning this unit can be found in the Foundation Skills Guide on the GSA website.
Range Statement
Processes include: | oxidation manganese coated filters sequestering ion exchange |
Competency Field
Treatment