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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Operate the chlorine dosing process 
SAQA US ID UNIT STANDARD TITLE
246535  Operate the chlorine dosing process 
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  5 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "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 
This unit standard is intended for persons using chlorine gas and chlorine compounds for the treatment of water and wastewater. Learners will be equipped with knowledge and skills to operate and maintain chlorine dosing equipment safely.

Learners credited with this unit standard are capable of:
  • Demonstrating knowledge of the dangers of chlorine gas and chlorine compounds.
  • Applying safety procedures in handling chlorine and products.
  • Identifying and describing a layout plan of the chlorine dosing installation.
  • Operating chlorine dosing equipment.
  • Measuring the effectiveness of chlorine dosing.
  • Measuring chlorine residual. 
    		•

    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 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate knowledge of the dangers of chlorine gas and chlorine compounds. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Physical properties of chlorine gas are identified and described to determine the protective equipment to be used. 

    ASSESSMENT CRITERION 2 
    Chlorine gas and products are identified and described in terms of their dangers to humans and the environment. 
    ASSESSMENT CRITERION RANGE 
    Chlorine gas and products include but are not limited to liquid/gas chlorine in 68 kilogram and 1 ton cylinders, sodium hypochlorite (Jik) and calcium hypochlorite(HtH).
     

    SPECIFIC OUTCOME 2 
    Apply safety procedures in handling chlorine and products. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Knowledge of safe handling and storage of chlorine cylinders is demonstrated with examples. 

    ASSESSMENT CRITERION 2 
    Equipment used to detect and deal with chlorine leaks are described to reduce dangers to the humans and the environment. 

    ASSESSMENT CRITERION 3 
    Chlorine leaks are monitored and reported in terms of organisational requirements. 

    ASSESSMENT CRITERION 4 
    Different chlorine cylinders are identified and explained in terms of their uses. 

    ASSESSMENT CRITERION 5 
    Safe procedures for connecting and disconnecting chlorine cylinders are identified and described in accordance with work policies and instructions. 

    SPECIFIC OUTCOME 3 
    Identify and describe a layout plan of the chlorine dosing installation. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Components of chlorinator are identified and explained in terms of their functions. 

    ASSESSMENT CRITERION 2 
    Components of the layout plan of a chlorine dosing installation are identified and explained in terms of their functions. 

    ASSESSMENT CRITERION 3 
    Pre and post chlorination process is explained in terms of their significance. 

    SPECIFIC OUTCOME 4 
    Operate chlorine dosing equipment. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Knowledge of safe operation of chlorine plant is demonstrated with examples. 

    ASSESSMENT CRITERION 2 
    Chlorine is dosed in accordance with instructions for application. 

    ASSESSMENT CRITERION 3 
    Dosing equipment is used in accordance with work procedures. 

    SPECIFIC OUTCOME 5 
    Measure the effectiveness of chlorine dosing. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Chlorine dosing rates are measured and recorded in accordance with the operating instructions. 

    ASSESSMENT CRITERION 2 
    Residual chlorine is measured, recorded and reported in accordance with operating instructions. 

    ASSESSMENT CRITERION 3 
    Chlorine dose is adjusted according to instructions to maintain residual. Knowledge of safe operation of chlorine plant is demonstrated with examples. 

    SPECIFIC OUTCOME 6 
    Measure chlorine residual. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Use of comparator is demonstrated through n-Diethyl -p- Phenylene Diamine (DPD). 

    ASSESSMENT CRITERION 2 
    Significance of different DPD tablets is explained to measure different residuals. 

    ASSESSMENT CRITERION 3 
    Results and significance of chlorine residual are explained and interpreted for adjustment purposes. 


    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 
    Learners should have a knowledge and understanding of:
  • Bacteria/algae/Filamentous growth control.
  • Disinfection.
  • Colour/Odour removal.
  • Iron and manganese removal.
  • Residual chlorine tests.
  • Bacteriological sampling. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems 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, group, organisation, and community. 

    UNIT STANDARD CCFO ORGANISING 
    Plan, organise and manage oneself and one`s activities responsibly and effectively. 

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

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematical and/or language skills in the form of oral and/or written presentation. 

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

    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. 

    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 
    This unit standard replaces unit standard 12331, "Operate The Chlorine Dosing Process", Level 2, 5 credits.

    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  58951   National Certificate: Water and Wastewater Treatment Process Operations  Level 2  NQF Level 02  Passed the End Date -
    Status was "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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    3. CHILUTSI TRADING ENTERPRISE 
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    8. GG SQUARED PROJECTS 
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    10. HAZYVIEW WATER SKILLS ACADEMY 
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    14. NKR CONSULTING ENGINEERS 
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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.