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 THAT HAS PASSED THE END DATE: 

Operate chemical treatment process 
SAQA US ID UNIT STANDARD TITLE
12053  Operate chemical treatment 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  6 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2005-02-09  2008-02-09  SAQA 1058/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2009-02-09   2012-02-09  

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 in combination with context expertise standard(s) will be able to operate a chemical dosing unit in a wastewater treatment works or water purification works. This competence will enable the learner to assist in the operation of the treatment process in accordance with relevant legislation. This competence will contribute towards portability of the learner's skills. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
Numeracy NQF level 2;
Literacy NQF level 2;
Apply personal safety practices NQF level 2. 

UNIT STANDARD RANGE 
Chemicals:
Soda ash, ferric chloride, slaked lime, aluminum sulphate, ammonium bromide, caustic soda, ferrous sulphate or polyelctrolyte.

Purpose of chemicals:
Chemicals for oxidation, co-agulation, flocculation, stabilisation, adsorption, disinfection.

Reports:
Measurements, stock levels of chemicals, spills, incidents, shelf life of chemicals and chemical dosing failures. 

Specific Outcomes and Assessment Criteria: 

SPECIFIC OUTCOME 1 
Demonstrate knowledge of relevant chemicals 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. Types of wastewater treatment chemicals are identified. 

ASSESSMENT CRITERION 2 
2. The purpose of the chemicals is explained. 

ASSESSMENT CRITERION 3 
3. Chemical injection points are identified. 

ASSESSMENT CRITERION 4 
4. Correct storage and handling of chemicals are explained. 

ASSESSMENT CRITERION 5 
5. Safety procedures when handling chemicals are explained. 

SPECIFIC OUTCOME 2 
Operate chemical dosing unit in accordance with work policies and procedures 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. Instructions are obtained from relevant person. 

ASSESSMENT CRITERION 2 
2. Chemical dosing unit is started and adjusted in accordance with instructions. 

ASSESSMENT CRITERION 3 
3. Problems are identified and appropriate corrective action is explained. 

ASSESSMENT CRITERION 4 
4. Routine shut down procedures are demonstrated. 

ASSESSMENT CRITERION 5 
5. Chemical dosing unit is kept clean and in good working order. 

SPECIFIC OUTCOME 3 
Monitor chemical dosage in accordance with work policies and procedures 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. Chemical dosing rates are measured. 

ASSESSMENT CRITERION 2 
2. Chemical feeder levels are monitored. 

ASSESSMENT CRITERION 3 
3. Effect of chemical dosing is monitored. 

ASSESSMENT CRITERION 4 
4. Stock levels of chemicals are monitored. 

ASSESSMENT CRITERION 5 
5. Reports are complete and accurate. 

SPECIFIC OUTCOME 4 
Demonstrate emergency procedures when operating chemical dosing unit 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. Potential emergency situations are explained. 

ASSESSMENT CRITERION 2 
2. Emergency shut-down procedures for all chemical dosing units are demonstrated. 

ASSESSMENT CRITERION 3 
3. Clean up procedures are demonstrated. 


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:
  • Relevant Legislation: OHS Act, National Water Act
  • Relevant work policies and procedures
  • Reasons for storing chemicals correctly
  • Materials safety data sheet
  • Procedures for handling chemicals safely
  • Knowledge of dilutions
  • Replenishing chemicals
  • Shelf life of chemicals
  • The importance of monitoring the effect of chemical dosing 
    		•


    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.

    Assessment criteria:
  • Problems are identified and appropriate corrective action is explained.
  • Potential emergency situations are explained. 
    		•

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organisation, and community.

    Assessment criteria:
  • Emergency shut-down procedures for all chemical dosing units are demonstrated.
  • Clean-up procedures are demonstrated. 
    		•

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

    Assessment criteria:
  • All. 
    		•

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

    Assessment criteria:
  • Routine shut down procedures are demonstrated.
  • Chemical feeder levels are monitored.
  • Effect of chemical dosing is monitored.
  • Stock levels of chemicals are monitored.
  • Reports are complete and accurate. 
    		•

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

    Assessment criteria:
  • Demonstrate knowledge of relevant chemicals.
  • Instructions are obtained from relevant person.
  • Problems are identified and appropriate corrective action is explained.
  • Potential emergency situations are explained. 
    		•

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

    Assessment criteria:
  • All. 
    		•

    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.

    Assessment criteria:
  • All. 
    		•

    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
    Simulation 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  22673   National Certificate: Wastewater Process Operations  Level 2  NQF Level 02  Passed the End Date -
    Status was "Reregistered"     		 2007-11-28  Was EWSETA until Last Date for Achievement 


    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.
     
    NONE 


    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.