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ANSI/IIAR Standard 4-2020 American National Standard for the Installation of Closed-Circuit Ammonia Refrigeration Systems ANSI/IIAR 4-2020 has been written to serve as a standard for the installation of closed-circuit ammonia refrigeration systems and overpressure protection relief piping systems.
ANSI/IIAR Standard 8-2020 American National Standard for Decommissioning of Closed-Circuit Ammonia Refrigeration Systems ANSI/IIAR 8-2020 specifies the minimum criteria for removing the ammonia charge in conjunction with the decommissioning of closed-circuit ammonia refrigeration systems.
ANSI/IIAR Standard 9-2020 American National Standard for Minimum System Safety Requirements for Existing Closed-Circuit Ammonia Refrigeration SystemsANSI/IIAR 9-2020 provides the minimum safety requirements for existing closed-circuit ammonia refrigeration systems as well as provides a method to determine if existing stationary closed-circuit refrigeration systems using ammonia as a refrigerant comply with minimum system safety requirements.
Refrigeration and Air Conditioning Mechanics install, maintain and service residential, commercial, industrial and institutional heating, ventilation, air conditioning and refrigeration units and systems. They also connect to air delivery systems, install and service hydronic and secondary refrigerant systems and associated controls. Their duties include laying out reference points for installation, assembling and installing components, installing wiring to connect components to an electric power supply and calibrating related controls. They also measure, cut, bend, thread and connect pipe to functional components and utilities. They maintain and service systems by inspecting and testing components, brazing and soldering parts to repair defective joints, adjusting and replacing worn or defective components and reassembling repaired components and systems. As part of service and commissioning, refrigeration and air conditioning mechanics start-up, test, charge, adjust, calibrate, balance, measure, verify, maintain and document systems. 2b1af7f3a8