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: 

Replace mechanical components on a vibrating screen 
SAQA US ID UNIT STANDARD TITLE
253416  Replace mechanical components on a vibrating screen 
ORIGINATOR
SGB Generic Manufacturing, Engineering, Technology 
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  4 
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 required to replace mechanical components on a vibrating screen.

People credited with this unit standard are able to:
  • Explain the factors critical to replacing mechanical components on a vibrating screen.
  • Prepare to replace mechanical components on a vibrating screen.
  • Replace mechanical components on a vibrating screen.
  • Test the vibrating screen and prepare for operation and/or production.

    Persons credited with this unit standard also understand the role that replacing the mechanical components on a vibrating screen plays in the complete process of mining. 
    		•

    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:
  • Lift and move loads.
  • Use relevant tools. 
    		•

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

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the factors critical to replacing mechanical components on a vibrating screen. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The explanation of the principle of operation and function of mechanical components on a vibrating screen is in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The explanation of the importance of replacing mechanical components on a vibrating screen to achieve healthy, safe production requirements is in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Direct consequences must include:
  • Injury to persons.
  • Damage to equipment.
  • Loss of production time through breakdowns.
  • Increased costs.
     
    		•

    ASSESSMENT CRITERION 3 
    The explanation lists the possible critical workplace hazards that may be encountered while replacing mechanical components on a vibrating screen in a particular context. The explanation also describes the risks associated with and the factors contributing to each workplace hazard. 

    ASSESSMENT CRITERION 4 
    The explanation lists the possible critical work related hazards that may be encountered while replacing mechanical components on a vibrating screen in a particular context. The explanation also describes the risks associated with and the factors contributing to each work-related hazard. 

    SPECIFIC OUTCOME 2 
    Prepare to replace mechanical components on a vibrating screen. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Permission is obtained in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The required personal protective equipment is selected, examined and used in a way that is consistent with its purpose, design and specified requirements. Personal protective equipment is used to ensure the safety of persons and equipment. 

    ASSESSMENT CRITERION 3 
    Tools, material and equipment are selected, examined and transported in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The workplace is examined in accordance with specified requirements. Workplace hazards are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The vibrating screen, of which the mechanical components are to be replaced, is identified in accordance with specified requirements. 

    ASSESSMENT CRITERION 6 
    The vibrating screen is locked out and made safe, in accordance with specified requirements and current accepted best practice. 

    ASSESSMENT CRITERION 7 
    The consequences for health, safety and production of not preparing to replace mechanical components in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Specified requirements and current legislation must include those for:
  • Permission.
  • Personal protective equipment.
  • Tools, material and equipment.
  • Workplace examination.
  • Workplace hazards.
  • Identify the vibrating screen.
  • Lock out and make safe.
     
    		•

    SPECIFIC OUTCOME 3 
    Replace mechanical components on a vibrating screen. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The required personal protective equipment is used in a way that is consistent with its purpose, design and specified requirements. Personal protective equipment is used to ensure the safety of persons and equipment. 

    ASSESSMENT CRITERION 2 
    Work related hazards are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The defective mechanical components are removed in line with sequence and current best practice. 

    ASSESSMENT CRITERION 4 
    The defective mechanical components are replaced with new components in line with sequence; lubrication, tolerances and current accepted best practice. 

    ASSESSMENT CRITERION 5 
    Interpersonal interaction is positive, consistent with specified requirements, promotes effective teamwork, and avoids dysfunctional conflict. 

    ASSESSMENT CRITERION 6 
    The tools and equipment are used in accordance with manufacturers' design and without injury to self and others. 

    ASSESSMENT CRITERION 7 
    The consequences for health, safety and production of not replacing the defective mechanical components in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Specified requirements and current legislation must include those for:
  • Personal protective equipment.
  • Work related hazards and associated risks.
  • Remove the defective mechanical components.
  • Replace the defective mechanical components with new components.
  • Interpersonal interaction.
  • Use of tools and equipment.
     
    		•

    SPECIFIC OUTCOME 4 
    Test the vibrating screen and prepare for operation and/or production. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The vibrating screen is prepared for testing purposes in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The vibrating screen is tested to determine if the replaced mechanical components are functioning in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Tools, material and equipment selected are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The workplace is cleaned and free from hazards in accordance with specified requirements and good housekeeping practices. 

    ASSESSMENT CRITERION 5 
    The report on work performed complies with specified requirements for format, content, accuracy and distribution. The report is delivered within the agreed time. 

    ASSESSMENT CRITERION 6 
    The consequences for health, safety and production of not testing the vibrating screen in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Specified requirements and current legislation must include those for:
  • Testing preparation.
  • Testing.
  • Tools, material and equipment.
  • Good housekeeping.
  • Reporting.
     
    		•


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider through the relevant ETQA by SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines and the agreed ETQA procedures. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge will be assessed through assessment of the specific outcomes in terms of the stipulated assessment criteria. Candidates are unlikely to achieve all the specific outcomes, to the standards described in the assessment criteria, without knowledge of the listed embedded knowledge. This means that for the most part, the possession or lack of the knowledge can be directly inferred from the quality of the candidate's performance. Where direct assessment of knowledge is required, assessment criteria have been included in the body of the unit standard.

    The following embedded knowledge is addressed in an integrated way in the unit standard:
  • Report Writing.
  • Health and safety knowledge.
  • Legal and site-specific requirements. 
    		•

    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 hazards and risks, sub standard conditions, process problems and to rectify these, illustrates his/her capability to solve problems. 

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

    Note: The ability of the candidate to communicate effectively and to maintain optimum production illustrates his/her capability to work effectively with others. 

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

    Note: The ability of the candidate to maintain optimum production whilst adhering to safety procedures, illustrates his/her capability to organise and manage themselves and their activities responsibly and effectively. 

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

    Note: The ability of the candidate to implement corrective actions illustrates his/her capability to collect, organise and critically evaluate information. 

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

    Note: The ability of the candidate to maintain optimum production through effective communication and his/her ability to adhere to reporting requirements illustrates 0his/her capability to communicate effectively. 

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

    Note: The use of science and technology is not relevant for this unit standard. 

    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 explain the importance of the process in terms of achieving production and up and down stream requirements illustrates his/her understanding of the world as a set of related systems. 

    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 29/1996), and Minerals Act, Regulations, 1991 (Act 50/1991).
  • Regulations.
  • 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.

    Notes to Assessors:

    Assessors should keep the following principles in mind when designing and conducting assessments against this unit standard:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each specific outcome, or groups of specific outcomes.
  • Make sure evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the assessment criteria.
  • The assessment criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be assessment criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, direct, authentic, sufficient, systematic, open and consistent.

    Unit Standard Justification:

    Level:

    Attribute; Level; Justification:
  • Skills; Level 2; The skills required have some variety but are still fairly simple. There will probably also be an application of sequence simple skills.
  • Procedures; Level 2; Procedure known and familiar.
  • Context; Level 2; Although the process could occur in different contexts, the contexts are repeatedly applicable and known to the candidate.
  • Knowledge; Level 3; Relevant theoretical knowledge required. (Operation, function, assembly and lubrication).
  • Information processing; Level 2; Information available, some processing required.
  • Problem Solving; Level 2; The candidate will only have to apply given solution to known/familiar problems.
  • Orientation of activities; Level 3; Decisions are taken but require supervision.
  • Application of responsibility; Level 3; Output is quality checked randomly.
  • Orientation of scope of responsibility; Level 2; Some responsibility towards quantity and quality, i.e. responsible for quantity and quality of item of competence and not the overall output. Sometimes responsible for guidance of others.

    Average Level = 21/9 = 2.33.
    Actual Level Assigned = 2.

    Credits:

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

    Activity: Hours:
  • Training Centre: 12 Hours.
  • On-The-Job Training: 24 Hours.
  • Mentoring required: 0 Hours.
  • Other (Specify): 0 Hours.
  • Total: 36 Hours.

    Credits Achieved = 36/10 = 3.6.
    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
    Elective  59689   National Certificate: Mechanical Engineering  Level 2  NQF Level 02  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  As per Learning Programmes recorded against this Qual 


    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.