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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Demonstrate knowledge of refrigeration principles and perform relevant calculations 
SAQA US ID UNIT STANDARD TITLE
120357  Demonstrate knowledge of refrigeration principles and perform relevant calculations 
ORIGINATOR
SGB Occupational Health and Safety 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 09 - Health Sciences and Social Services Preventive Health 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular-Fundamental  Level 4  NQF Level 04 
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 does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This Unit Standard requires learners to be able to demonstrate knowledge of refrigeration calculations and principles. Learners credited with this Unit Standard are capable of:
  • Demonstrating knowledge of the principles of a refrigeration system.
  • Demonstrating understanding of insulation and fouling.
  • Demonstrating knowledge of calculations relating to refrigeration.
  • Evaluating and reporting data. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    It is assumed that learners are competent in Communication and Mathematical Literacy at NQF level 4. 

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

    Legal requirements:
  • OHS Act and Regulations 85/1993
  • Mine Health and Safety Act and Regulations 29/1996
  • Guideline for mandatory Codes of Practice

    Site-specific requirements:
  • Managerial instructions
  • Codes of Practice
  • Company Standards
  • Standard Task Procedures
  • Health Management Program
  • Risk Assessment Documentation
  • Working Guides
  • Manufacturers' specifications 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate knowledge of the principles of a refrigeration system. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The principles of operation of a refrigeration system are explained according to specified requirements. 

    ASSESSMENT CRITERION 2 
    The importance of cooling hot working environments is explained in terms of the consequences to health, safety and production. 

    ASSESSMENT CRITERION 3 
    The units of measurement confirm understanding and are according to specified requirements. 

    ASSESSMENT CRITERION 4 
    Refrigeration definitions are given in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    Legal and site-specific requirements pertaining to refrigeration plant rooms are specified and confirms understanding. 

    ASSESSMENT CRITERION 6 
    The applications of a refrigeration system are explained and compared in accordance with specified requirements. 

    ASSESSMENT CRITERION 7 
    The characteristics of an ideal refrigerant are described in accordance with specified requirements. 

    SPECIFIC OUTCOME 2 
    Demonstrate understanding of insulation and fouling. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The reasons for and the various methods of insulation and the requirements of insulating material are described in terms of the consequences to health and safety and are according to specified requirements. 

    ASSESSMENT CRITERION 2 
    The symptoms of and the reasons for fouling and the appropriate action to be taken are explained according to specified requirements. 

    ASSESSMENT CRITERION 3 
    The prevention of condensation underneath insulation, water logging and the effects on cooling efficiency are described according to specified requirements. 

    SPECIFIC OUTCOME 3 
    Demonstrate knowledge of calculations relating to refrigeration. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The duty and performance of a refrigeration plant circuit is calculated in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The duty and performance of the condensing circuit is calculated in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The duty and performance of the evaporating circuit is calculated in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The plant duty and performance is determined by using a pressure-enthalpy diagram and is in accordance with specified requirements. 

    SPECIFIC OUTCOME 4 
    Evaluate and report data. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Plant performance is evaluated and necessary action is recommended in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    Reports are complete, accurate, in the required format, and submitted to designated personnel on time. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA or an ETQA that has a Memorandum of Understanding 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 the moderation guidelines in the relevant qualification and the agreed ETQA procedures. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following embedded knowledge is addressed in an integrated way in the unit standard:
  • Health and safety knowledge
  • Report writing
  • 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 
    Solve problems related to the performance of refrigeration plants by determining remedial and preventive measures. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team/group/organisation/community by accepting, interpreting and delegating instructions correctly, if and when required, in a context-appropriate manner. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively by meeting specified requirements, recording test results in specified formats, and recommending appropriate action where necessary. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, organise and critically evaluate information to correct for conditions, environmental factors, and limitations that can influence readings, interpret information obtained. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematics and language skills in the modes of oral and written presentations to record and report test results. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically (showing responsibility towards the environment and health of others) to select the appropriate methods and instruments for determining the performance of refrigeration plants. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recommending appropriate actions based on the evaluation of test results and reporting results to relevant designated persons, confirming that a specific observation, inference, action or decision can have an interrelated 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 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  79807   Further Education and Training Certificate: Occupational Hygiene and Safety  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2021-06-30  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.
     
    1. DIGGERS TRAINING AND DEVELOPMENT SERVICES 



    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.