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: 

Demonstrate understanding of gas properties 
SAQA US ID UNIT STANDARD TITLE
246577  Demonstrate understanding of gas properties 
ORIGINATOR
Chemical Industries SGB 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Engineering and Related Design 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02 
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 
Learners who demonstrate competence as described in the outcomes of this Unit Standard will understand the importance of understanding the properties of a range of gases to apply to their activities when doing gas installations.

The qualifying learner is able to:
  • Describe the different gas groupings as applicable to the gas manufacturing industry.
  • Demonstrate understanding of the application of inert/non-reactive gases.
  • Demonstrate understanding of the application of flammable gases.
  • Demonstrate understanding of the application of oxidising gases.
  • Demonstrate understanding of the application of toxic/corrosive gases.

    This unit standard will contribute to the full development of any learner within the gas installations environment, by providing recognition, further mobility and transportability within the field. The knowledge, skills and understanding demonstrated in this unit standard are essential for upliftment, social and economic transformation in the gas installation environment. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    Learners accessing this unit standard will have demonstrated competence against literacy and mathematical literacy at ABET Level 4, NQF Level 1 or equivalent. 

    UNIT STANDARD RANGE 
    The typical context of this unit standard assumes an existing or new domestic or commercial gas installation site.

    The typical scope of this unit standard includes one of the following but is not limited to:
  • LPG installations.
  • Natural gas installations.
  • Compressed gas installations.
  • Medical installations.

    Range statements, which are applicable to the Unit Standard title, Specific Outcomes and Assessment Criteria are found beneath the applicable assessment criteria. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Describe the different gas groupings as applicable to the gas manufacturing industry. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The three phases of substances are defined and examples identified in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The properties of gases are explained as described by the ideal gas law. 

    ASSESSMENT CRITERION 3 
    The properties of gases are explained as described by the liquefied gas law. 

    ASSESSMENT CRITERION 4 
    Properties of common gases are listed in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
  • Common gases include but are not limited to oxygen, nitrogen, natural gas, carbon monoxide, acetylene, liquid petroleum gas, hydrogen and carbon dioxide.
  • Properties include chemical formula, flammability, density, identification methods and condensation temperature.
     

  • ASSESSMENT CRITERION 5 
    The four major gas groupings are described as defined by the gas manufacturing industry. 
    ASSESSMENT CRITERION RANGE 
    Gas groupings include but are not limited to inert/non-reactive gases, flammable gases, oxidants and toxic/corrosive gases.
     

    ASSESSMENT CRITERION 6 
    The properties of alternative gas groupings are described in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Gas groupings include but are not limited to liquefiable gases, cryogenic gases, speciality gases, poisonous gases and noble gases.
     

    SPECIFIC OUTCOME 2 
    Demonstrate understanding of the application of inert/non-reactive gases. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The gases in this grouping are identified in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Inert/non-reactive gases includes but is not limited to argon, helium, carbon dioxide and nitrogen.
     

    ASSESSMENT CRITERION 2 
    The properties of inert/non-reactive gases are described in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Hazards and the correct response relevant to inert/non-reactive gases are described using examples from industry. 

    ASSESSMENT CRITERION 4 
    Applications of inert/non-reactive gases are described by using actual industry examples. 

    ASSESSMENT CRITERION 5 
    Special installation requirements of inert/non-reactive gases are described in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Special installation requirements includes but is not limited to colour-coding of pipes and cylinders.
     

    ASSESSMENT CRITERION 6 
    Incompatible materials are identified in terms of safety and mechanical properties. 

    ASSESSMENT CRITERION 7 
    The gases in this grouping are identified in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Flammable gases includes but is not limited to acetylene, liquid petroleum gas (propane, butane), hydrogen, natural gas (methane).
     

    SPECIFIC OUTCOME 3 
    Demonstrate understanding of the application of flammable gases. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The properties of flammable gases and the combustion triangle are described in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    Hazards and the correct response relevant to inert/non-reactive gases are described using examples from industry. 

    ASSESSMENT CRITERION 3 
    Applications of flammable gases are described by using actual industry examples. 

    ASSESSMENT CRITERION 4 
    Special installation requirements of flammable gases are described in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Special installation requirements includes but is not limited to colour-coding of pipes and cylinders.
     

    ASSESSMENT CRITERION 5 
    Incompatible materials are identified in terms of safety and mechanical properties. 

    SPECIFIC OUTCOME 4 
    Demonstrate understanding of the application of oxidising gases. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The gases in this grouping are identified in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Oxidising gases includes but is not limited to oxygen, nitrous oxide and air.
     

    ASSESSMENT CRITERION 2 
    The properties of oxidising gases are described in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Hazards and the correct response relevant to oxidising gases are described using examples from industry. 

    ASSESSMENT CRITERION 4 
    Applications of oxidising gases are described by using actual industry examples. 

    ASSESSMENT CRITERION 5 
    Special installation requirements of oxidising gases are described in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Special installation requirements includes but is not limited to colour coding of pipes and cylinders.
     

    ASSESSMENT CRITERION 6 
    Incompatible materials are identified in terms of safety and mechanical properties. 

    SPECIFIC OUTCOME 5 
    Demonstrate understanding of the application of toxic/corrosive gases. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The gases in this grouping are identified in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Toxic/corrosive gases includes but is not limited to ammonia and chlorine.
     

    ASSESSMENT CRITERION 2 
    The properties of toxic/corrosive gases are described in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Hazards and the correct response relevant to inert/non-reactive gases are described using examples from industry. 

    ASSESSMENT CRITERION 4 
    Applications of toxic/corrosive gases are described by using actual industry examples. 

    ASSESSMENT CRITERION 5 
    Special installation requirements of toxic/corrosive gases are described in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Special installation requirements includes but is not limited to colour coding of pipes and cylinders.
     

    ASSESSMENT CRITERION 6 
    Incompatible materials are identified in terms of safety and mechanical properties. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • An assessor, accredited with a relevant NQF Level 2 or higher qualification, will assess the learner's competency.
  • Anyone assessing a learner or moderating the assessment of a learner against this Qualification must be registered as an Assessor with the relevant ETQA.
  • Direct observation in simulated or actual work conditions is required. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The qualifying learner understands and is able to:
  • Describe the different gas groupings as applicable to the gas manufacturing industry.
  • Demonstrate understanding of the applications of inert/non-reactive gases.
  • Demonstrate understanding of the applications of flammable gases.
  • Demonstrate understanding of the applications of oxidants gases.
  • Demonstrate understanding of the applications of toxic/corrosive gases. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    The learner is able to identify and solve problems in which responses display that responsible decisions, using critical and creative thinking, have been made by:
  • Describing the hazards and the correct response relevant to a range of gases.
  • Identifying incompatible materials in terms of safety and mechanical properties.

    Refer to the following Specific Outcome/s:
  • Demonstrate understanding of the application of inert/non-reactive gases.
  • Demonstrate understanding of the application of flammable gases.
  • Demonstrate understanding of the application of oxidising gases.
  • Demonstrate understanding of the application of toxic/corrosive gases. 

  • UNIT STANDARD CCFO ORGANISING 
    The learner is able to organise and manage himself and his activities responsibly and effectively by:
  • Describing the special installation requirements of a range of gases.
  • Describing applications of a range of gases using actual industry examples.

    Refer to the following Specific Outcome/s:
  • Demonstrate understanding of the application of inert/non-reactive gases.
  • Demonstrate understanding of the application of flammable gases.
  • Demonstrate understanding of the application of oxidising gases.
  • Demonstrate understanding of the application of toxic/corrosive gases. 

  • UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information by:
  • Describing the different gas groupings as applicable to the gas manufacturing industry.
  • Describing the actual industry applications of a range of gases.

    Refer to all Specific Outcomes. 

  • UNIT STANDARD CCFO COMMUNICATING 
    Refer to the following Specific Outcome/s: 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically, showing responsibility towards the environment and health of others when:
  • Identifying incompatible materials in terms of safety and mechanical properties.

    Refer to the following Specific Outcome/s:
  • Demonstrate understanding of the application of inert/non-reactive gases.
  • Demonstrate understanding of the application of flammable gases.
  • Demonstrate understanding of the application of oxidising gases.
  • Demonstrate understanding of the application of toxic/corrosive gases. 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by:
  • Describing special installation requirements of a range of gases.
  • Identifying incompatible materials in terms of safety and mechanical properties.

    Refer to the following Specific Outcome/s:
  • Demonstrate understanding of the application of inert/non-reactive gases.
  • Demonstrate understanding of the application of flammable gases.
  • Demonstrate understanding of the application of oxidising gases.
  • Demonstrate understanding of the application of toxic/corrosive gases. 

  • UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full personal development of each learner and the social and economic development of the society at large:
  • Understanding the role of properties of gases in gas installations and the effect it has on the growth and development of the organisation, its customers and employees.

    Refer to all Specific Outcomes: 

  • 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 
    Supplementary Information:

    Terms and definitions:
  • Hazard; A potentially damaging physical event, phenomenon or human activity that may cause the loss of life or injury, property damage, social and economic disruption or environmental degradation.
  • Hazardous; Hazardous means potentially dangerous, unpredictable and harmful.
  • Material Safety Data Sheet (MSDS); A MSDS is designed to provide both workers and emergency personnel with the proper procedures for handling or working with a particular substance. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  59015   National Certificate: Gas Installations  Level 2  NQF Level 02  Reregistered  2023-06-30  CHIETA 


    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.