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: 

Overhaul compressors 
SAQA US ID UNIT STANDARD TITLE
253375  Overhaul compressors 
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 3  NQF Level 03  5 
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 replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
10836  Overhaul a piston-type air compressor  Level 3  NQF Level 03  7   
10838  Overhaul a vane-type air compressor  Level 3  NQF Level 03  7   
10840  Overhaul a screw-type air compressor  Level 3  NQF Level 03  7   

PURPOSE OF THE UNIT STANDARD 
This unit standard will be useful to people who are required to overhaul compressors.

People credited with this unit standard are able to:
  • Explain the factors critical to overhauling compressors.
  • Prepare to overhaul compressors.
  • Overhaul compressors.
  • Test compressors and prepare for operation and/or production.

    The skills, knowledge and understanding demonstrated within this unit standard are essential for social and economic transformation and contribute to the upliftment and economic.

    This unit standard is intended to promote general skills, knowledge and understanding of how to overhaul compressors in the mining and minerals sector in order to ensure knowledgeable and informed workers. 
    		•

    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. 
    		•

    UNIT STANDARD RANGE 
    The following scope and context applies to the whole unit standard:
  • Overhaul vane type compressors.
  • Overhaul piston type compressors.

    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 overhauling compressors. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The explanation of the principle of operation and function of compressors is in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The explanation of the importance of overhauling compressors shows a clear understanding of the direct consequences to self and the business. 
    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 overhauling compressors 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 overhauling compressors 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 overhaul compressors. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    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 so that the safety of persons and equipment is protected. 

    ASSESSMENT CRITERION 2 
    Tools, material and equipment required are selected, examined and transported in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The workplace is examined in accordance with specified requirements. Hazardous and sub-standard conditions are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The compressor to be overhauled is identified in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The compressor is positioned and secured in accordance with standard best practices. 

    ASSESSMENT CRITERION 6 
    The consequences for health, safety and production of not preparing to overhaul compressors in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include:
  • Permission.
  • Personal protective equipment.
  • Tools, material and equipment.
  • Workplace examination.
  • Workplace hazards.
  • Identification of the compressor to be overhauled.
  • Positioning and securing.
     
    		•

    SPECIFIC OUTCOME 3 
    Overhaul compressors. 

    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 so that the safety of persons and equipment is protected. 

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

    ASSESSMENT CRITERION 3 
    The compressor is dismantled in line with specified requirements for sequence and tolerances, and is consistent with accepted best practice. 

    ASSESSMENT CRITERION 4 
    The components are inspected and faulty components are replaced in line with manufacturers' specifications accepted best practice. 

    ASSESSMENT CRITERION 5 
    The compressor is assembled in line with specified requirements for sequence and tolerances. 

    ASSESSMENT CRITERION 6 
    Interpersonal interaction is positive, consistent with specified requirements, promotes effective teamwork, and avoids dysfunctional conflict. 

    ASSESSMENT CRITERION 7 
    The tools and equipment are used in accordance with manufacturer's design and without injury to self and others. 

    ASSESSMENT CRITERION 8 
    The consequences for health, safety and production of not overhauling compressors in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include:
  • Personal protective equipment.
  • Work-related hazards.
  • Dismantling.
  • Inspection.
  • Assembling.
  • Interpersonal interaction.
  • Use of tools and equipment.
     
    		•

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

    ASSESSMENT CRITERIA     

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

    ASSESSMENT CRITERION 2 
    The compressor is tested to determine if it is 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 compressor in line with specified requirements and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include those for:
  • Preparation for testing.
  • Testing the compressor.
  • Tools material and equipment.
  • Good housekeeping.
  • Reporting.
     
    		•


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a leaner against this unit standard must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider with relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA, according to 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 of compressors' components.
  • Knowledge of processes and procedures regarding replacing of components on a compressor is demonstrated. 
    		•

    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 and to request assistance with making safe in an appropriate manner as a team member. 

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

    Note: During the preparation process, the candidate must indicate what tools, material, and equipment needs to be examined, tested and transported. 

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

    Note: Not relevant for this unit standard. 

    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 obtaining permission and reporting will indicate his/her proficiency in effective communication. 

    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 effect of non-compliance and deviation from standard procedures will indicate his/her proficiency in understanding that a specific action or decision taken has more than one 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 10836: Overhaul a piston-type air compressor, Level 3, 7 credits.
  • ID 10838: Overhaul a vane-type air compressor, Level 3, 7 credits.
  • ID 10840: Overhaul a screw-type air compressor, Level 3, 7 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 and Regulations, 1996 (Act 29/1996), and Minerals Act and Regulations, 1991 (Act 50/1991).
  • Mandatory Codes of Practice.
  • SANS and other relevant Standards.
  • Chief Inspector of Mines' Directives/Instructions.
  • Guidelines issued by the Chief Inspector of Mines.

    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 3; A variety of skills (Dismantling, examining, lubricating and assembling).
  • Procedures; Level 2; Procedure is known and familiar, but not repetitive.
  • Context; Level 2; Contexts are repeatedly applicable and known.
  • Knowledge; Level 3; Relevant theoretical knowledge is required (operation, function and lubrication).
  • Information processing; Level 2; Information is readily available, but some processing is required (tolerances, sequences, specifications).
  • Problem Solving; Level 3; Discretion to identify technical problems. Solutions are well established.
  • Orientation of activities; Level 3; Decisions are taken but require supervision.
  • Application of responsibility; Level 3; Output is checked randomly for quality.
  • Orientation of scope of responsibility; Level 2; Responsible for completion (quantity) and function (quality).

    Average Level = 2.55.
    Actual Level Assigned = 3.

    Credits:

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

    Activity: Hours:
  • Training Centre: 24 Hours.
  • On-The-Job Training: 30 Hours.
  • Mentoring required: 0 Hours.
  • Other (Specify): 0 Hours.
  • Total: 54 Hours.

    Credits Achieved = 54/10 = 5.4.
    Credits Assigned = 5. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  66009   National Certificate: Diesel Electric and Electric Fitting  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  As per Learning Programmes recorded against this Qual 
    Elective  59709   Further Education and Training Certificate: Mechanical Engineering: Fitting  Level 4  NQF Level 04  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.