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

Demonstrate knowledge pertaining to uncontrolled explosions 
SAQA US ID UNIT STANDARD TITLE
120363  Demonstrate knowledge pertaining to uncontrolled explosions 
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  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 requires learners to be able to demonstrate knowledge of uncontrolled explosions that may occur in places of work, to determine the nature of such flammable and noxious gases in order to prevent unsafe, unhealthy occupational environments.

Learners credited with this Unit Standard are capable of:
  • Demonstrating knowledge pertaining to the fundamentals of explosions.
  • Demonstrating knowledge of the causes and prevention of explosions.
  • Demonstrating knowledge pertaining to the detection of potentially explosive atmospheres.
  • Discussing the various explosion control measures. 
    		•

    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:

    Include and are contained in one or more, but not limited to the following documents:
  • OHS Act and Regulations 85/1993
  • Guideline for mandatory Codes of Practice
  • Relevant Acts: Mine Health & Safety Act, 1996 (Act no 29/1996), and Minerals Act and Regulations, 1991 (Act no 50/1991).
  • SANS and other relevant Standards
  • Chief Inspector of Mine's Directives

    Site-specific requirements:
  • Managerial instructions
  • Company Standards
  • Standard Task Procedures
  • Health Management Program
  • Working Guides
  • Hazard Identification and Risk Assessments (HIRA)
  • Mandatory Codes of Practice
  • Occupational Health and Safety Risk Management Programme
  • List of Recorded OH&S Risks
  • Equipment and Materials Specifications
  • Fire fighting manual 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate knowledge pertaining to the fundamentals of explosions. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The mechanisms of explosions are explained and are consistent with specified requirements. 

    ASSESSMENT CRITERION 2 
    The main points involved in an explosion and the role of each element are explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The gases produced by explosions are named according to specified requirements. 

    ASSESSMENT CRITERION 4 
    Flammable gas and dust explosions are explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The elements essential to an effective escape strategy are described in accordance with specified requirements. 

    ASSESSMENT CRITERION 6 
    The required symbolic signs and safety equipment, pertaining to fires and explosions, are explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 7 
    The conditions that must exist before an explosion can occur are described according to specified requirements. 

    SPECIFIC OUTCOME 2 
    Demonstrate knowledge of the causes and prevention of explosions. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The causes of explosions are explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    Precautions to be taken to prevent explosions are explained in terms of the consequences to health, safety and production and are in accordance with specified requirements. 

    SPECIFIC OUTCOME 3 
    Demonstrate knowledge pertaining to the detection of potentially explosive atmospheres. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The importance of continuously assessing health and safety hazards and risks in terms of the possible consequences for health, safety and productivity is explained. 

    ASSESSMENT CRITERION 2 
    Working place health and safety hazards and risks are dealt with according to specified requirements. 

    ASSESSMENT CRITERION 3 
    Permission to enter the working place is obtained according to specified requirements. 

    ASSESSMENT CRITERION 4 
    The consequences of entering a workplace without obtaining permission are explained in terms of health and safety. 

    ASSESSMENT CRITERION 5 
    The required personal protective equipment is obtained, checked for functionality and used in accordance with its design and specified requirements. 

    ASSESSMENT CRITERION 6 
    The importance of examining, using and storing the personal protective equipment is explained in terms of the consequences to health, safety and productivity. 

    ASSESSMENT CRITERION 7 
    The importance of testing for gas according to specified requirements is explained in terms of the consequences for health, safety and productivity. 

    ASSESSMENT CRITERION 8 
    Tests are performed according to specified requirements. 

    ASSESSMENT CRITERION 9 
    Sampling volumes are adequate to determine gas concentration and conform to specified requirements. 

    ASSESSMENT CRITERION 10 
    Preparatory work is performed in a manner that fosters teamwork and avoids conflict. 

    SPECIFIC OUTCOME 4 
    Discuss the various explosion control measures. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The comparison of passive- and triggered barriers is described in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The comparison of explosion-proof and explosion-resistant stoppings is explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The various explosion-proof appliances in a ventilation system are described in accordance with specified requirements. 


    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 to interpretation of gas concentrations and explosive atmospheres, analysis, and recording of flammable gas mixtures by recommending 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, and recommend appropriate action. 

    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 testing for flammable gas mixtures. 

    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
    Elective  79807   Further Education and Training Certificate: Occupational Hygiene and Safety  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.