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: 

Thicken slurry in a metallurgical plant 
SAQA US ID UNIT STANDARD TITLE
252282  Thicken slurry in a metallurgical plant 
ORIGINATOR
SGB Mining and Minerals 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Fabrication and Extraction 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02 
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 replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
9024  Separate liquid from solids by means of a thickener  Level 2  NQF Level 02  Complete 
10581  Separate liquid from solids by means of a high-rate thickener  Level 2  NQF Level 02  Complete 

PURPOSE OF THE UNIT STANDARD 
This unit standard will be useful to people responsible for thickening slurry in a metallurgical plant.

People credited with this unit standard are able to:
  • Demonstrate knowledge relating to the thickening process.
  • Prepare to thicken slurry.
  • Thicken slurry.
  • Complete the duties pertaining to the thickening process. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:
  • Communication and mathematical literacy at NQF Level 1. 

  • UNIT STANDARD RANGE 
    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria.

    The learner will be required to thicken slurry by means of one or both of the following equipment units:
  • Conventional thickener.
  • Hi-rate thickener. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate knowledge relating to the thickening process. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The importance of thickening slurry is explained in terms of achieving specified production requirements and up-and downstream operational requirements. 

    ASSESSMENT CRITERION 2 
    The principal components of the thickening system are identified and their functions explained in terms of design and operational requirements. 
    ASSESSMENT CRITERION RANGE 
    Must include:
  • Thickener components.
  • Auxiliary systems.
  • Safety devices.
  • Interlock systems.
     

  • ASSESSMENT CRITERION 3 
    The elementary principles of the thickening process are explained in terms of purpose, method and handling. 

    ASSESSMENT CRITERION 4 
    The operating parameters and control methods and the consequences of not adhering to these are explained in terms of legal and operational requirements. 

    ASSESSMENT CRITERION 5 
    The factors affecting the optimum performance of the thickening process are explained in termns of operational requirements. 

    ASSESSMENT CRITERION 6 
    The requirements pertaining to a safe, healthy work environment in the thickening process and the consequences of not adhering to the above are explained in terms of legal and operational requirements. 

    ASSESSMENT CRITERION 7 
    Hazards and associated risks pertaining to the thickening process are identified through relevant risk assessment procedures. 

    ASSESSMENT CRITERION 8 
    The actions to be taken should hazards and risks be encountered are explained in terms of specified requirements. 

    ASSESSMENT CRITERION 9 
    The actions to be taken, should sub-standard conditions and problems pertaining to the thickening process be encountered are explained in terms of legal and operational requirements. 

    ASSESSMENT CRITERION 10 
    Security requirements pertaining to the thickening process are explained in terms of legal and operational requirements. 

    ASSESSMENT CRITERION 11 
    Communication requirements pertaining to the thickening process and the consequences of non-compliance are explained in terms of legal and operational requirements. 

    ASSESSMENT CRITERION 12 
    The reagents are identified and their functions and purposes explained in terms of operational requirements. 

    SPECIFIC OUTCOME 2 
    Prepare to thicken slurry. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Task-specific personal protective and safety equipment is verified, examined and used in accordance with prescribed practices. 

    ASSESSMENT CRITERION 2 
    Task-specific tools and equipment are verified and examined in accordance with prescribed practice. 

    ASSESSMENT CRITERION 3 
    Workplace hazards and associated risks are dealt with in accordance with recommendations set out in the risk assessment procedures. 

    ASSESSMENT CRITERION 4 
    The thickening system is examined and substandard conditions are dealt with in accordance with legal and operational requirements. 

    ASSESSMENT CRITERION 5 
    The reagent addition equipment is set to specified dosing rates in accordance with operational requirements. 

    ASSESSMENT CRITERION 6 
    Security requirements pertaining to the thickening process are explained and met in accordance with legal and operational requirements. 

    ASSESSMENT CRITERION 7 
    Safety and health precautions towards self and others are maintainedin accordance with legal and operational requirements. 

    SPECIFIC OUTCOME 3 
    Thicken slurry. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Task-specific personal protective and safety equipment is used in accordance with prescribed practices. 

    ASSESSMENT CRITERION 2 
    Safe and optimum production is ensured through appropriate communication. 

    ASSESSMENT CRITERION 3 
    The start-up of the thickening system is in accordance with standard plant task procedures. 

    ASSESSMENT CRITERION 4 
    The feed is started and the thickening process is monitored and controlled in accordance with standard plant task procedures. 

    ASSESSMENT CRITERION 5 
    Tools and equipment are used in accordance with prescribed practices. 

    ASSESSMENT CRITERION 6 
    Work related hazards and associated risks are dealt with in accordance with recommendations set out in the risk assessment procedures. 

    ASSESSMENT CRITERION 7 
    Security requirements pertaining to the thickening process are met in accordance with legal and operational requirements. 

    ASSESSMENT CRITERION 8 
    Problems encountered are dealt with in accordance with prescribed practices. 

    ASSESSMENT CRITERION 9 
    The thickening process is consistent with environmental policy and legislation. 

    ASSESSMENT CRITERION 10 
    Safety and health precautions towards self and others are maintained in accordance with legal and operational requirements. 

    SPECIFIC OUTCOME 4 
    Complete the duties pertaining to the thickening process. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The thickening process is stopped in accordance with standard plant task procedures. 

    ASSESSMENT CRITERION 2 
    Personal protective and safety equipment is dealt with in accordance with prescribed practices. 

    ASSESSMENT CRITERION 3 
    Tools and equipment are dealt with in accordance with prescribed practices. 

    ASSESSMENT CRITERION 4 
    Security requirements pertaining to the thickening process are met in accordance with legal and operational requirements. 

    ASSESSMENT CRITERION 5 
    Good housekeeping practices are maintained in accordance with prescribed practices. 

    ASSESSMENT CRITERION 6 
    Reporting and data-recording requirements are met in accordance with legal and operational requirements. 

    ASSESSMENT CRITERION 7 
    Preparation for maintenance is in accordance with specified requirements and lock-out procedures. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against the qualification must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this qualification must be accredited as a provider with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or by an ETQA that has a Memorandum of Understanding with 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, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described in the associated unit standards.
  • Anyone wishing to be assessed against this qualification may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following embedded knowledge will be assessed in an integrated way in the context of the unit standard:

    Critical factors relating to thickening slurry:
  • Legal and specified requirements.
  • Achieving specified production requirements.
  • Risk Assessment procedures and actions.
  • Identify the principal components and explain the specification and their functions.
  • Specified communication requirements.
  • Elementary principles of the process.

    Processes and events:
  • Preparation.
  • Examination.
  • Metal recovery.
  • Monitor and control.

    Causes and effects (Safety and Health):
  • Use of personal protective equipment.
  • Use of tools and equipment.
  • Workplace hazards and associated risks.
  • Housekeeping.

    Procedures and techniques:
  • Methods of collecting, analysing, organising, summarising and presenting data.
  • Fault finding and corrective techniques.
  • Handling procedure and controls.

    Regulations, legislation, agreements, policies and standards:
  • Safety, health and environmental legislation and regulations.
  • Quality policies, standards and agreements. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking.

    Note: The ability of the candidate to identify substandard and hazardous conditions, assess and take appropriate action. 

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

    Note: The ability and willingness of the candidate to accept and interpret work instructions correctly. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage himself/herself and his/her activities responsibly and effectively.

    Note: The ability of the candidate to indicate what methods, tools and personal protective equipment are required, and to communicate to fellow workers his/her intentions and the assistance required. 

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

    Note: The ability of the candidate to reconcile the information from visual and physical examinations and constantly evaluate the changing situation. 

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

    Note: The appropriate communication with the relevant personnel with regard to the reporting of hazards and substandard conditions will indicate his/her proficiency in effective communication. 

    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.

    Note: The ability of the candidate to identify and refer anomalous behaviour to a specialist confirms his/her understanding of the fact that a specific observation, inference, action or decision may have a devastating effect. 

    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 the following unit standards:
  • ID 9024: Separate liquid from solids by means of a thickener, Level 2, 3 credits.
  • ID 10581: Separate liquid from solids by means of a high-rate thickener, Level 2, 3 credits.

    Terminology:

    Specified Requirements:

    Specified requirements include legal and site-specific requirements and are contained in one or more of the following documents:

    Legal:
  • Relevant Acts: e.g. Mine Health & Safety Act, 1996 (Act no 29/1996), and Minerals Act and Regulations, 1991 (Act no 50/1991).
  • Mandatory Codes of Practice.
  • SANS and other relevant Standards.
  • Chief Inspector of Mines' Directives.

    Site Specific:
  • Hazard Identification and Risk Assessments (HIRA).
  • Occupational Health and Safety Risk Management Programme.
  • Managerial Instructions.
  • Mine Standard Procedures.
  • List of Recorded OH&S Risks.
  • Working Guides.
  • Equipment and Materials Specifications.

    Unit Standard Justification:

    Level:

    Attribute, Level, Justification:
  • Skills, Level 2, Moderate in range.
  • Procedures, Level 2, Established and familiar.
  • Contextm, Level 2, Routine and familiar.
  • Knowledge, Level 3, Some relevant theoretical.
  • Information processing, Level 2, Basic processing of readily available information.
  • Problem Solving, Level 3, A range of known responses to familiar problems, based on limited discretion, and judgement.
  • Orientation of activities, Level 3, Directed, with some autonomy.
  • Application of responsibility, Level 2, Under general supervision and quality control.
  • Orientation of scope of responsibility, Level 2, Some responsibility for quantity and quality of output and possible responsibility for the output of others.

    Average Level = 2.33.
    Actual Level Assigned = 2.

    Credits:

    Total hours required by the learner to achieve the required outcome:

    Activity, Hours:
  • Classroom Teaching, 10 Hours.
  • On-The-Job Training, 30 Hours.
  • Mentoring required, 0 Hours.
  • Other (Specify), 0 Hours.

    Total = 40 Hours.

    Credits Achieved = 40/10 = 4.0.
    Credits Assigned = 4. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  59305   National Certificate: Mineral Processing  Level 2  NQF Level 02  Reregistered  2023-06-30  MQA 


    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.
     
    1. Adcorp Technical Training 
    2. Anglo American Platinum Amendelbult Concentrators 
    3. ANGLOGOLD ASHANTI LTD (V/R) 
    4. BAFOKENG RASIMONE MANAGEMENT SERVICES PTY LTD 
    5. COLLIERY TRAINING COLLEGE 
    6. CULLINAN DIAMOND MINE (PTY) LTD 
    7. De Beers Voorspoed Mine 
    8. EKAPA MINERALS (PTY) LTD 
    9. ERGO BUSINESS DEVELOPMENT ACADEMY 
    10. Exxaro Coal Pty Ltd 
    11. Finsch Diamonds Mine 
    12. FOSKOR Pty Ltd 
    13. FRASER ALEXANDER PTY LTD - TAILINGS WAGES 
    14. HARMONY GOLD MINING COMPANY LIMITED 
    15. IMPALA PLATINUM LIMITED - RUSTENBURG 
    16. KHUMANI IRON ORE MINE 
    17. KHUTALA COLLIERY 
    18. KOLOMELA MINE 
    19. Kumba Sishen HRD Centre 
    20. MESSINA PLATINUM MINES 
    21. METSKILL (PTY) LTD 
    22. MINERAL MINING TRAINING INSTITUTE (PTY) LTD 
    23. MODIKWA PLATINUM MINE 
    24. NKOMATI MINE 
    25. Nokaneng Environmental Management Consulting 
    26. NORTHAM PLATINUM LIMITED 
    27. Palabora Copper Pty Ltd 
    28. PRIDE OF SUCCESS (PTY) LTD 
    29. Richtrau No 177 Pty Ltd t/a Bokoni Platinum Mines (Lebowa Platinum Mines) 
    30. SAFETY TRAINING PRACTITIONERS PTY LTD 
    31. SAMANCOR EASTERN CROME MINES 
    32. SASOL GLOBAL LEARNING 
    33. SIBANYE GOLD ACADEMY PROPRIETARY LIMITED 
    34. Talent Factor (Pty) Ltd 
    35. THARISA MINERALS PTY LTD 
    36. Thusang Metallurgical Engineering Training and Consulting 
    37. TWO RIVERS PLATINUM (PTY) LTD 
    38. VENETIA MINE 
    39. Waterval Smelters Process Division 
    40. WESTERN PLATINUM MINE 



    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.