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: 

Machine a scaiffe 
SAQA US ID UNIT STANDARD TITLE
376504  Machine a scaiffe 
ORIGINATOR
Task Team - Fabrication and Extraction 
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 5  Level TBA: Pre-2009 was L5 
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
10533  Machine a scaiffe  Level 3  NQF Level 03  12  Complete 

PURPOSE OF THE UNIT STANDARD 
This unit standard is useful for learners who intend following a career in the diamond processing sector and who are required to machine a scaiffe.

Learners credited with this unit standard are able to:
  • Select required equipment and tools to machine a scaiffe.
  • Inspect a used scaiffe and identify its owner.
  • Machine the surface of a scaiffe for reuse.
  • Balance a machined scaiffe.
  • Conduct post machine-a-scaiffe activities. 

  • 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 4.
  • Lathe and clock gauge operation. 

  • UNIT STANDARD RANGE 
    The scope and context applies to the conversion of rough diamond gemstones into cut and polished diamond gemstones for sale into local and international markets. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Select required equipment and tools to machine a scaiffe. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The materials in a scaiffe are identified and their properties described in relation to polishing diamond gemstones. 

    ASSESSMENT CRITERION 2 
    The importance of the scaiffe to be balanced, even, free from chips and gouges and clear of residue is explained in relation to the requirements for the polishing of diamond gemstones. 

    ASSESSMENT CRITERION 3 
    Housekeeping, safety practices in the workplace and care of equipment are explained in line with workplace specific requirements. 

    ASSESSMENT CRITERION 4 
    The consequence of deviating from workplace practices while utilising specified tools and equipment are described in terms of potential impact on productivity. 

    SPECIFIC OUTCOME 2 
    Inspect a used scaiffe and identify its owner. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Used scaiffes are inspected to identify the owner, are marked for future identification and the preferences of the user are noted. 
    ASSESSMENT CRITERION RANGE 
    Preferences of the user will be determined by one or more of the following:
  • Instructions received with the scaiffe to be refurbished.
  • Records kept by the refurbishing operation.
  • Referral to the user.
     

  • ASSESSMENT CRITERION 2 
    Used scaiffes are inspected to determine whether they are safe to machine in line with workplace specific requirements. 
    ASSESSMENT CRITERION RANGE 
    Determination of whether scaiffes are safe to machine must include:
  • Identification of the material the scaiffe is made out of.
  • Assessing the thickness of the scaiffe after anticipating the impact of removal of damage.
  • Evaluating the anticipated thickness after machining against the material it is made out of.
  • Checking that the scaiffe is not cracked.
     

  • ASSESSMENT CRITERION 3 
    Used scaiffes are inspected to determine the suitability for machining in line with workplace specific requirements. 

    ASSESSMENT CRITERION 4 
    Appropriate action is taken in line with workplace specific procedures ensuring suitability of the scaiffe after machining. 

    SPECIFIC OUTCOME 3 
    Machine the surface of a scaiffe for reuse. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Appropriate personal protective clothing and equipment is selected and applied according to required standards of occupational health and safety. 

    ASSESSMENT CRITERION 2 
    Scaiffes selected for machining are located in a lathe and an appropriate tool to machine the surface of the scaiffe is selected. 

    ASSESSMENT CRITERION 3 
    The lathe is operated and checked to ensure that the surface of the scaiffe is machined according to workplace specific requirements. 

    ASSESSMENT CRITERION 4 
    The surface is inspected to ensure all residues of the polishing media are removed. Remedial action is taken where necessary in line with workplace specific procedures. 

    ASSESSMENT CRITERION 5 
    The scaiffe is tested for flatness. Remedial action is taken where necessary in line with workplace specific procedures. 

    SPECIFIC OUTCOME 4 
    Balance a machined scaiffe. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The equipment used to balance a scaiffe is checked to ensure that it is set for balancing. 

    ASSESSMENT CRITERION 2 
    The cleaned and prepared scaiffe is located in the balancing equipment according to workplace specific procedures. 

    ASSESSMENT CRITERION 3 
    The equipment is operated and the scaiffe is balanced according to specified requirements. 

    SPECIFIC OUTCOME 5 
    Conduct post machine-a-scaiffe activities. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The machined and balanced scaiffe is labelled and protected for transportation to the user and handed over for despatch to the user in accordance with workplace specific procedures. 

    ASSESSMENT CRITERION 2 
    Housekeeping, safety practices in the workplace and care of equipment are explained in line with workplace specific requirements. 
    ASSESSMENT CRITERION RANGE 
    Good housekeeping must include:
  • Clean the workplace of swarf, dust and loose particles.
  • Replace materials, equipment and tools into correct storage facilities.
  • Return any scaiffes not suitable for machining to the appropriate holding facility.
  • Return any equipment needing maintenance to the appropriate workshop/facility.
     

  • ASSESSMENT CRITERION 3 
    Report scaiffes in accordance with workplace specific procedures. 


    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 is addressed in an integrated way in the unit standard:
  • Knowledge relating to the functioning of equipment:
    > Understanding the use and application of equipment used to machine scaiffes.
    > The implications of defects in equipment and the effect on processing of diamonds and the impact they have on value.
    > Awareness of the risk to a diamond that can be caused by non conforming equipment and accessories.
  • Occupational Health, Safety and Environmental issues:
    > Significant hazards and risks related to boiling activities, their consequences and mitigating actions.
    > Safety measures related to diamond boiling and use of pressure vessels.
    > PPE requirements and the reason for each.
    > Impact on the environment and mitigating actions.
    > Emergency procedures.
    > Handling and storage of hazardous chemicals.
    > Adherence to fumigation protocols.
  • Legislative and structural environment:
    > Importance of adherence to health and safety requirements.
    > Importance of care and maintenance of tools and equipment.
    > Codes of practice.
  • Communication:
    > Reporting requirements and ability.
    > Communicating with relevant personnel.
    > Liaison between personnel in various functions. 


  • Critical Cross-field Outcomes (CCFO): 

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

    Note: The ability to inspect and identify whether machined scaiffes are safe for reuse, that residues and blemishes have been removed and to check and balance a scaiffe contributes to the problem solving ability. 

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

    Note: The ability to accept and interpret work instructions correctly, to comply with security arrangements indicates the ability to work effectively as a team member within the structure of the organisation and with people outside the organisation. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.

    Note: The preparation of tools and equipment prior to commencing machining of scaiffes and the monitoring of scaiffes and machinery during the process and the complying with good housekeeping practices indicates the ability to organise and manage activities in the work environment. 

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

    Note: The ability to assimilate instructions, establish the preferences of the user and be accountable for the treatment of the scaiffes indicates the ability to collect, organise and evaluate information. 

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

    Note: The ability to apply the tools and machinery for machining scaiffes, to examine the effects of the machining on scaiffes and to abide by safety and housekeeping standards demonstrates the critical use of science and technology in the safeguarding of the material, the environment, fellow workers and oneself. 

    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 10533, "Machine a scaiffe", Level 3, 12 credits.

    Terminology:

    Specific Requirements:

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

    Legal:
  • The Bargaining Council for the Diamond Cutting Industry Main Agreement.
  • Regulations of the Diamonds Act, No 56 of 1986, as amended.
  • Occupational Health and Safety Act (Act 85/1993).
  • Mandatory Codes of Practice.
  • The glossary of terms about the terminology of the industry issued by the Bargaining Council for the Diamond Cutting Industry.

    Site-specific:
  • Hazard Identification and Risk Assessments (HIRA).
  • Occupational Health and Safety Risk Management Programme.
  • Managerial Instructions.
  • Working Guides, tariff agreements, policies and procedures.
  • 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  78843   National Certificate: Diamond Processing  Level 5  Level TBA: Pre-2009 was L5  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.
     
    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.