What is ISO 20854 - Safety requirements for the thermal container about?
ISO 20854 is an international standard that focuses on the safety of thermal containers for refrigerating systems using flammable refrigerants. ISO 20854 describes the design of the mechanical refrigeration unit (MRU) and operation of container refrigerating systems in all anticipated operational modes and locations. ISO 20854 describes the industry's best practices for the safe operation of flammable refrigerants in refrigerating systems used in thermal freight containers operated onboard ships, in terminals, on-road, on rail and land.
ISO 20854 also specifies requirements for the validation and consideration of possible safety concepts and protective devices within the OMRA process, including charge release tests, simulation, and function tests of the associated protective equipment. It defines test requirements for shock, impact, and vibration. A validation procedure is given to demonstrate that risks from hazardous events are investigated and their severity and frequency are meaningfully reduced, to achieve tolerable risk values.