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

Interpret air-conditioning, refrigeration and ventilation plant layout and component drawings, sketches and specifications 
SAQA US ID UNIT STANDARD TITLE
116717  Interpret air-conditioning, refrigeration and ventilation plant layout and component drawings, sketches and specifications 
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03  6 
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
13374  Interpret air-conditioning, refrigeration and ventilation plant layout and component drawings, sketches and specifications  Level 3  NQF Level 03  6   

PURPOSE OF THE UNIT STANDARD 
People credited with this standard have the ability to interpret a technical drawing and the accompanying specifications and data to determine:
  • The type of system and method of operation in terms of the layout of the system, the type of system equipment and components and the installation requirements.
  • The operations required enabling the manufacture, installation/assembly, fault determination, repair and overhaul, and routine maintenance of plants, equipment and components. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    It is assumed that people starting to learn towards this unit standard:
  • Have already demonstrated a basic understanding of plane geometry and three-dimensional geometry used in the preparation of workshop drawings.
  • Can draw simple sketches or drawings.
  • Have proven ability in the use of both the SI and Imperial systems.
  • Can interpret the relevant SABS Codes relating to technical drawings. 
    		•

    UNIT STANDARD RANGE 
    As specified in the above Specific Outcomes 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    State the purpose of technical drawings and specifications. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The purpose for engineering drawings and specifications as a means of communicating technical information is described on a given example. 

    ASSESSMENT CRITERION 2 
    Knowledge of the technical services provided by the drawing office is demonstrated. 

    ASSESSMENT CRITERION 3 
    The need for component, sub-assembly and layout drawings is explained. 

    ASSESSMENT CRITERION 4 
    The materials, tools and equipment required and the sequence of operation to manufacture, install, dismantle, overhaul and assemble equipment from drawings is explained. 

    ASSESSMENT CRITERION 5 
    The need for main items of supplementary information supplied with technical drawings is explained. 
    ASSESSMENT CRITERION RANGE 
    Material, treatment, finish, tolerances.
     

    SPECIFIC OUTCOME 2 
    List the methods of communicating technical information on drawings and in specifications. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The need for and the various methods of representing technical drawings for components and equipment is explained. 
    ASSESSMENT CRITERION RANGE 
    Orthographic, isometric and oblique.
     

    ASSESSMENT CRITERION 2 
    The need for civil construction drawings is explained 
    ASSESSMENT CRITERION RANGE 
    Architectural drawings, structural engineering drawings, building services drawings. Electrical and mechanical equipment layout drawings.
     

    ASSESSMENT CRITERION 3 
    The importance of standards in providing precise and unambiguous information is demonstrated. 
    ASSESSMENT CRITERION RANGE 
    SABS and ISO Standards.
     

    ASSESSMENT CRITERION 4 
    The importance of understanding drawings drawn to a different scale or units of measurement is demonstrated. 

    SPECIFIC OUTCOME 3 
    Interpret technical drawing. 
    OUTCOME RANGE 
    Circuit and block diagrams. Air-conditioning, refrigeration and ventilation, architectural and structural layout drawings. Site and building/structural drawings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The role of detail and assembly drawings, layout drawings and sections, site plans and location drawings is explained. 

    ASSESSMENT CRITERION 2 
    Knowledge is demonstrated regarding the interpretation of the shape and characteristics of the component, equipment or plant as well as the need for service space. 

    ASSESSMENT CRITERION 3 
    The basic and additional information to be found on drawings is listed. 
    ASSESSMENT CRITERION RANGE 
    Projection, unit measurement, scale, material specification, tolerances, tools, machining specifications.
     

    ASSESSMENT CRITERION 4 
    Dimensioning from drawings is explained. 

    ASSESSMENT CRITERION 5 
    Machining specifications on drawings are explained. 

    ASSESSMENT CRITERION 6 
    Typical symbols used to denote construction details are identified. 
    ASSESSMENT CRITERION RANGE 
    Brickwork, concrete, wood, insulation, metal, floor levels, doors, openings, windows
     

    ASSESSMENT CRITERION 7 
    Fluids conveyed in piping and drain lines are identified from coding on the drawings. 
    ASSESSMENT CRITERION RANGE 
    Refrigerant, chilled water, condenser water, compressed air.
     

    ASSESSMENT CRITERION 8 
    Typical symbols representing refrigeration and air-conditioning plant components and accessories are identified. 

    ASSESSMENT CRITERION 9 
    Knowledge of the interpretation of first and third-angle elevations and plans of assemblies, including sectional views is demonstrated. 

    ASSESSMENT CRITERION 10 
    Ambiguities in drawings and other documentation are identified. 

    SPECIFIC OUTCOME 4 
    Identify components and manufacturing/assembly procedures from drawings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Components and material are identified from drawings, specifications and data. 

    ASSESSMENT CRITERION 2 
    Correct materials are selected from drawings and lack of information is identified. 

    ASSESSMENT CRITERION 3 
    Correct materials are selected from drawings for particular application. 

    ASSESSMENT CRITERION 4 
    An operations sheet showing the logical sequence of operations of component assembly/manufacture is drawn up. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    Any person wishing to be assessed against this unit standard may apply to an assessment agency, assessor or provider institution accredited by the relevant ETQA, who may appoint a moderator to be present at the assessment.
    The assessor must have knowledge and experience of air-conditioning or refrigeration. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The importance of correct drawings and specifications and the interpretation thereof. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Interpreting technical drawings in order to obtain information required to solve problems and carry out tasks. 
    		•

    UNIT STANDARD CCFO WORKING 
    Work effectively with others
  • Interfacing with other disciplines 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organize and manage myself and my activities responsibly and effectively
  • Preparing, planning and selecting information from drawings to manufacture, install, repair, maintain and assemble parts, components, equipment and plant 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively
  • Learning to use drawings as a communication tool. 
    		•

    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 is replacing unit standard 13374 - 'Interpret air-conditioning, refrigeration and ventilation plant layout and component drawings, sketches and specifications' - Level 3. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  65489   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  MERSETA 
    Core  48963   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2009-03-12  Was MERSETA until Last Date for Achievement 


    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.