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

Control limestone stockpile quality 
SAQA US ID UNIT STANDARD TITLE
242751  Control limestone stockpile quality 
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 3  NQF Level 03  10 
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 will be useful to people who are responsible for controlling the quality of limestone stockpiles.

Learners credited with this unit standard are able to:
  • Demonstrate knowledge of the components in limestone stockpiles.
  • Prepare for production start-up.
  • Perform on-line analysis.
  • Control stockpile quality. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    It is assumed that learners are already competent in:
  • Communication and Mathematical Literacy at NQF Level 3. 
    		•

    UNIT STANDARD RANGE 
    This unit standard refers to the building of stockpiles in limestone quarries or aggregate plants. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate knowledge of components in limestone stockpiles, their individual qualities and combinations for specific products. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The various components in the limestone stockpile are identified with respect to the relevant mix of raw materials used in the manufacturing process. 

    ASSESSMENT CRITERION 2 
    The qualities of different types of limestone are described with respect to production requirements. 

    ASSESSMENT CRITERION 3 
    The various critical chemical components of limestone are described with respect to their impact on the manufacturing process. 
    ASSESSMENT CRITERION RANGE 
    Critical chemical components must include the following:
  • Limestone Saturation Factor (LSF).
  • Magnesium carbonate.
  • Total alkali content.
     
    		•

    ASSESSMENT CRITERION 4 
    The impact of variances in limestone quality and size distribution is explained with respect to the effect on blending efficiency. 

    ASSESSMENT CRITERION 5 
    The different types of stockpiling and the appropriate reclaiming techniques are described with respect to production requirements. 
    ASSESSMENT CRITERION RANGE 
    Stockpile handling methods must include the following:
  • Chevron.
  • Cone.
  • Horizontal layer.
  • Circular.
     
    		•

    SPECIFIC OUTCOME 2 
    Prepare for production start up. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Personal Protective Equipment (PPE) is selected, checked and used in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The quality control mechanism is made ready in accordance with the relevant quality management procedure. 
    ASSESSMENT CRITERION RANGE 
    Quality control mechanisms must include the following:
  • Computer algorithm.
  • Spreadsheet calculation control.
  • Manual calculation.
     
    		•

    ASSESSMENT CRITERION 3 
    The state of readiness of the stockpile control system is communicated to production personnel in accordance with specified requirements. 

    SPECIFIC OUTCOME 3 
    Perform on-line analysis of stockpile samples. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Samples of limestone going to the pile are collected as per the relevant sampling procedure. 
    ASSESSMENT CRITERION RANGE 
    Must include the following:
  • Belt samples.
  • Stream samples.
  • Auto sampling.
     
    		•

    ASSESSMENT CRITERION 2 
    Samples are prepared for analysis in accordance with the relevant sample preparation procedure. 

    ASSESSMENT CRITERION 3 
    Samples are analysed in accordance with the relevant sample analysis procedure. 
    ASSESSMENT CRITERION RANGE 
    Analysis methods must include the following:
  • XRF.
  • AA.
  • Photometry.
  • Total carbonates (wet analysis).
     
    		•

    ASSESSMENT CRITERION 4 
    Safe work procedures are followed in accordance with specified requirements. 

    SPECIFIC OUTCOME 4 
    Control stockpile quality. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Results are captured into quality control mechanisms in accordance with specified procedure. 

    ASSESSMENT CRITERION 2 
    Deviations from the standard requirements are assessed in accordance with production parameters. 

    ASSESSMENT CRITERION 3 
    Quality parameters are determined for the next control period in accordance with production requirements. 

    ASSESSMENT CRITERION 4 
    Parameters (or limits) are communicated to appropriate personnel in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    Stockpile is built to quality specifications within constraints of time and total tonnage of pile. 


    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 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 unit standard 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 with 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.
  • Anyone wishing to be assessed against this unit standard 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.
  • Knowledge relating to the method of controlling limestone stockpile quality:

    > Purpose of controlling limestone stockpile quality.
    > Principles and methods of controlling limestone stockpile quality.
    > Typical equipment used and their applications.
    > Relevant terminology.
    > Possible non-conformances, their consequences and mitigating actions.
  • Occupational Health, Safety and Environmental Issues:

    > Significant hazards and risks related to controlling limestone stockpile quality, their consequences and mitigating actions.
    > Safety measures related to controlling limestone stockpile quality.
    > PPE requirements and the reason for each.
    > Impact on the environment and mitigating actions.
    > Emergency procedures.
  • Applicable statutory requirements:

    > Relevant clauses from applicable acts and regulations.
    > Codes of practice.
    > Competency requirements and restrictions of personnel controlling limestone stockpile quality. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as members of a team, group, organisation or community.
  • The ability of the learner to interact with other parties in the production chain in order to ensure that the stockpile meets the relevant quality profile. 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.
  • The ability of the learner to reconcile the information from quality tests in order to ensure that the stockpile meets and maintains the required quality profile. 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically showing responsibility towards the environment and health of others.
  • The use of the relevant process technology and equipment to measure, record and interpret data with respect to operational, environmental and occupational health and safety issues. 
    		•

    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.
  • The ability of the learner to understand the interaction between upstream, downstream and associated processes and particularly his own impact in each regard. 
    		•

    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 
    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.
    > SABS 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. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  57692   Further Education and Training Certificate: Carbonate Materials Manufacturing Processes  Level 4  NQF Level 04  Passed the End Date -
    Status was "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. PPC Ltd 


    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.