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

Maintain safety in the handling of ammonia refrigerant 
SAQA US ID UNIT STANDARD TITLE
9542  Maintain safety in the handling of ammonia refrigerant 
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation 
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 3  NQF Level 03  8 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Registered" 		 2001-06-13  2004-06-13  SAQA 0836/01 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2005-06-13   2008-06-13  

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 is replaced by: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
116704  Maintain safety in the handling of ammonia refrigerant  Level 3  NQF Level 03  9   

PURPOSE OF THE UNIT STANDARD 
Assist in the installation, commissioning and maintenance of ammonia refrigeration equipment associated with commercial or industrial refrigeration systems.

Carry out their work without endangering themselves, others in the vicinity of the equipment and the environment. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
It is assumed that learners starting to learn towards this unit standard have been alerted to the consequences of unsafe handling of ammonia refrigerant. It is assumed that learners starting to learn toward this unit standard understand the legal requirements set out in SABS 0147 code of practice. It is assumed that learners starting to learn toward this unit standard have a basic knowledge of the operation of commercial and industrial refrigeration plants. 

Specific Outcomes and Assessment Criteria: 

SPECIFIC OUTCOME 1 
Use ammonia refrigerant and understand its use in refrigerating systems. 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. The action required on finding a leak on a system that has just been charged is explained. 

ASSESSMENT CRITERION 2 
2. The method of minimizing the loss of refrigerant from a system through leaks is explained. 

ASSESSMENT CRITERION 3 
3. The importance of ensuring that a system is gas-tight and clean at all times is explained. 

ASSESSMENT CRITERION 4 
4. The method of leak testing a system is explained. 

ASSESSMENT CRITERION 5 
5. The need for dehydration before charging a system is explained. 

ASSESSMENT CRITERION 6 
6. The storage and disposal of recovered compressor oil is explained. 

ASSESSMENT CRITERION 7 
7. The recovery of ammonia from a system is explained. 

ASSESSMENT CRITERION 8 
8. The consequences of ammonia leakage into the atmosphere are listed and explained. 

SPECIFIC OUTCOME 2 
Identify safe procedures in the handling of ammonia. 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. The storage of ammonia refrigerant containers is explained. 

ASSESSMENT CRITERION 2 
2. The safety procedures needed when working with ammonia in confined spaces and occupied areas is explained. 

ASSESSMENT CRITERION 3 
3. The hazards presented by ammonia are explained. 

ASSESSMENT CRITERION 4 
4. The personal protective equipment that should be used when working with ammonia is described. 

ASSESSMENT CRITERION 5 
5. The personal protective clothing that should be used when working with ammonia is described. 

SPECIFIC OUTCOME 3 
Practice safe procedures in the handling of ammonia. 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. The safety precaution to be taken to minimize ammonia accidents and the possible effects of such accidents is described. 

ASSESSMENT CRITERION 2 
2. The identification labeling required for ammonia systems is described. 

ASSESSMENT CRITERION 3 
3. The safety procedures required when handling, storing and transporting ammonia are described. 

SPECIFIC OUTCOME 4 
Charge a system with ammonia refrigerant. 

ASSESSMENT CRITERIA 

ASSESSMENT CRITERION 1 
1. The charging of a system with refrigerant after evacuation is demonstrated. 

ASSESSMENT CRITERION 2 
2. The condition/phase of the ammonia (pressure, phase, temperature) at points indicated by the assessor are states and described. 

ASSESSMENT CRITERION 3 
3. The meaning of superheated ammonia gas and sub cooled ammonia liquid is explained. 


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 use of ammonia as a refrigerant and their precautions to be taken when handling
  • The charging of ammonia into a system and the associated safety measures. 
    		•


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Selecting instrumentation to carry out tests 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities
  • Prepare, plan and select resources for tasks to be carried out 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information
  • Reading and interpreting the safety procedures for ammonia 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically
  • Use tools and instrumentation and interpretation of results 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate understanding of the world as a set of related systems
  • Understanding the effect ammonia, when released into the atmosphere can have on persons 
    		•

    UNIT STANDARD NOTES 
    This unit standard has been replaced by unit standard 116704, which is "Maintain safety in the handling of ammonia refrigerant", Level 3, 9 credits. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  20720   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Registered"     		 2004-06-13  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.