Unit of competency Outline

Date retreived
22/07/2026 3:03 PM AWST

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Install and commission ammonia refrigeration systems, components and associated equipment

Install and commission ammonia refrigeration systems, components and associated equipment

Unit of competency
National Code
UEERA0046
State Code
OBX96
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
05/10/2020
View on TGA
State Implementation and Classification
Approved Date
12/07/2021
Field of Education
031315 - Refrigeration And Air Conditioning Mechanics
Original Release Date
12/07/2021
Nominal Hours
18
Description
This unit involves the skills and knowledge required to install and commission ammonia refrigeration system, components and associated equipment.It includes installing and commissioning refrigeration equipment using ammonia as the refrigerant. It also includes applying safe working practices and refrigeration principles that apply to ammonia, interpreting plans and specifications, commissioning and completing the necessary commissioning documentation.The skills and knowledgein this unit will be applied by refrigeration and air conditioning technicians during the installation and commissioning of refrigeration systems using ammonia refrigerant.The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.). Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, skills and knowledge described in this unit require a relevant contract of training, such as an Australian Apprenticeship. Additional and/or other conditions may apply in some jurisdictions subject to regulations related to refrigeration, air conditioning or electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations. Permits may also be required for some work environments, such as confined spaces, working aloft, near live electrical apparatus and site rehabilitation.
Notes
Elements and Performance Criteria
1 Prepare to install ammonia refrigeration system
  • 1.1 WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied
  • 1.2 Safety hazards not previously identified are reported, assessed and advice on risk control measures sought from the project engineer
  • 1.3 Nature of work is obtained from documentation or from project engineer to determine the scope of work to be undertaken
  • 1.4 Advice is sought from the project engineer to ensure refrigeration work is coordinated effectively with others
  • 1.5 Sources of materials required for work are determined in accordance with workplace procedures
  • 1.6 Tools, equipment and testing devices needed to carry out refrigeration work are obtained and checked for correct operation and safety
2 Install and commission ammonia refrigeration system
  • 2.1 Measuring system operating parameters are conducted in accordance with WHS/OHS requirements and workplace procedures
  • 2.2 Major components and pipe work are installed in accordance with relevant industry standards, codes of practice and regulations
  • 2.3 Pressure testing is conducted at a pressure compatible with ammonia and in accordance with industry standards and practices
  • 2.4 Precautions are taken to prevent damage to components while pressure testing the system
  • 2.5 Leaks are located and rectified using testing methods appropriate to the refrigeration system and in accordance with industry standards and practices
  • 2.6 Refrigeration system is evacuated in accordance with industry standards and practices
  • 2.7 Refrigeration system is charged safely with ammonia and lubricants in accordance with industry standards and practices
  • 2.8 Refrigeration pre-operational checks are carried out on operating and safety controls in accordance with manufacturer specifications
  • 2.9 Refrigeration system is commissioned and adjustments made to operating and safety controls
  • 2.10 Temperature reduction of cool rooms and freezers are undertaken in accordance with industry standards and practices
  • 2.11 Refrigeration maintenance is carried out and includes inspection and cleaning of strainers and filters and collection of oil sample for analysis
  • 2.12 Training is conducted for person/s responsible for the refrigeration system operation and maintenance
3 Complete and report on commissioning of ammonia refrigeration system
  • 3.1 Worksite is cleaned and made safe in accordance with workplace procedures
  • 3.2 Contaminated refrigerant and lubricant are dealt with in accordance with legislative/regulatory requirements
  • 3.3 Refrigeration operation condition and commissioning data are documented and includes parameters not within the specified range for the system
  • 3.4 Refrigeration mechanical and electrical commissioning documentation is completed in accordance with workplace procedures
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