SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Operate water and wastewater chemical dosage systems 
SAQA US ID UNIT STANDARD TITLE
246466  Operate water and wastewater chemical dosage systems 
ORIGINATOR
SGB Water Sector 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Civil Engineering Construction 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02  10 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
The qualifying learner achieving this unit standard will be able to operate water chemical dosing systems on a water and wastewater treatment plants. Learners will be provided with relevant competencies to be able to apply the required chemical dosages and monitor the use of relevant chemicals and to assist during emergency situations on the plant.

Learners will also be able to apply the relevant health, safety and legislative guidelines in the workplace. Learners completing this unit standard will be able to contribute to cost effective chemical dosing thus providing consumers with affordable water services. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication at NQF Level 1.
  • Mathematical literacy at NQF Level 1. 

  • UNIT STANDARD RANGE 
    Chemicals include but are not limited to ammonia, bromine, lime, calcium carbonate, ferric chloride, ferrous chloride, ferric sulphate, flocculants and chlorine products. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Identify the chemicals used on a water and wastewater treatment plant. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Types of chemicals are identified and explained in terms of their uses in the plant. 

    ASSESSMENT CRITERION 2 
    Safety procedures for chemical storage and handling are identified and applied through role-plays. 

    ASSESSMENT CRITERION 3 
    Chemicals for dosage are identified and prepared in accordance with workplace operating procedures. 

    SPECIFIC OUTCOME 2 
    Prepare chemical concentration and adjust chemical dosing rate. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Chemical dosing equipment is identified in relation to their features and position in the plant. 

    ASSESSMENT CRITERION 2 
    Different designs of dosing equipment are identified and explained in terms of their advantages and disadvantages. 

    ASSESSMENT CRITERION 3 
    Dosing equipment is identified and drawn using flow diagrams. 
    ASSESSMENT CRITERION RANGE 
    Dosing equipment refers to but is not limited to dispensers, chemical dosing pumps, storage tanks and cylinders.
     

    ASSESSMENT CRITERION 4 
    Requirements for chemical dosage are identified and explained in accordance with work policies and procedures. 

    ASSESSMENT CRITERION 5 
    Chemical solutions are prepared according to the standard work procedures. 

    ASSESSMENT CRITERION 6 
    Dosing equipment is adjusted according to process requirements. 

    ASSESSMENT CRITERION 7 
    The amount of chemicals used is recorded for stock taking purposes. 

    ASSESSMENT CRITERION 8 
    Chemical dosage is monitored using flow meters. 

    SPECIFIC OUTCOME 3 
    Maintain chemical dosing facilities and equipment in a safe working condition. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The reasons for maintaining chemical dosing facilities and equipment are explained with examples. 

    ASSESSMENT CRITERION 2 
    Safety precautions relating to chemical spillage are explained in accordance with Material Safety Data Sheet (MSDS). 

    ASSESSMENT CRITERION 3 
    Possible incidents and accidents relating to chemical spillages are reported in accordance with organisational requirements. 

    ASSESSMENT CRITERION 4 
    Possible leaks and blockages are detected using detector tools. 

    ASSESSMENT CRITERION 5 
    Shutdown procedures for each unit process are explained in accordance with work policies and procedures. 

    SPECIFIC OUTCOME 4 
    Demonstrate knowledge of emergency procedures in emergency situations. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Emergency equipment is identified and located for emergency purposes. 
    ASSESSMENT CRITERION RANGE 
    Emergency equipment refers but is not limited to sensors, automated shutdown systems, alarms, emergency stop button, gas masks and showers.
     

    ASSESSMENT CRITERION 2 
    Potential emergency situations on own works are identified and explained for emergency response. 

    ASSESSMENT CRITERION 3 
    The importance of following emergency procedures is explained with examples. 

    ASSESSMENT CRITERION 4 
    Location of emergency switches and isolating valves is identified for emergency reaction. 

    ASSESSMENT CRITERION 5 
    The impact of chemical spillage on the environment is explained in terms of legislation. 

    ASSESSMENT CRITERION 6 
    Ways to contain spillage and leaks from bulk storage are explained in order prevent environment pollution. 
    ASSESSMENT CRITERION RANGE 
    Ways refer but are not limited to bund wall and spillage container blanket (arzobit) products.
     

    ASSESSMENT CRITERION 7 
    Clean up procedures after the emergency situations are explained in order to reduce further risks. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant ETQA according to the ETQA`s policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments at exit points of the qualification, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described both in individual unit standards as well as the integrated competence described in the qualification. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
  • Relevant Legislation: OHS Act.
  • Relevant Work policies and procedures.
  • Which chemicals are used to address pH correction, oxidisation, coagulation and disinfection.
  • Operation of chemical dosing equipment.
  • Safety aspects of plant chemicals.
  • Potential dangers of the plant chemicals.
  • Chemical stock levels.
  • Chemical dosing failure.
  • Potential emergency situations and emergency procedures.
  • Chemical feeder levels.
  • The importance of communicating chemical stock levels and chemical dosing failures.
  • Purpose of an emergency shut down procedure. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems relating to water quality in which responses display that responsible decisions using critical and creative thinking have been made. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team when dealing with chemical water dosage in the plant. 

    UNIT STANDARD CCFO ORGANISING 
    Plan, organise and manage oneself and one`s activities responsibly and effectively in order to complete designated tasks. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information pertaining to irregularities. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematical and/or language skills in the form of oral and/or written presentation to immediate supervisors in relation to problems identified pertaining to the maintenance of chemical dosing facilities. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically, showing responsibility towards the environment and health of others when using chemicals. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation in terms of different designs of chemical dosing equipment. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Integrated Assessment:

    When conducting assessments, assessors must ensure that they are familiar with the full text of the unit standards being assessed. Assessors must ensure that the assessment covers the specific outcomes, critical cross-field outcomes and essential embedded knowledge by developing assessment activities and tools, which are appropriate to the contexts in which the learners are working. These activities and tools may include self-assessment, peer assessment, formative and summative assessment. It may be more effective and efficient to assess a number of unit standards together in an integrated way, thus reducing the overall number of assessments and ensuring that commonalities that exist between a number of unit standards are captured in a way that makes sense for assessment.

    Assessment option:

    Learners could be assessed using the following methods:
  • Oral or written questions.
  • Observation. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  77163   National Certificate: Industrial Water Treatment Support System Operations  Level 2  NQF Level 02  Reregistered  2023-06-30  EWSETA 
    Core  58951   National Certificate: Water and Wastewater Treatment Process Operations  Level 2  NQF Level 02  Reregistered  2023-06-30  EWSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
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    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.