Specific requirements about GHG will depend on compliance obligations from country to country. For example, European countries within the European Union have to comply with a regulation stating requirements like these:
Control on the use of refrigerant substances or fluids that contain greenhouse gases
Survey of equipment with refrigeration systems, identification of fluorinated greenhouse gases, and verify whether or not it is a controlled substance
Survey of refrigerant quantities / Preparation of inventory of equipment that may contain GHG
Compliance with the Plan for annual verification of equipment with a quantity of regulated refrigerant equal to or exceeding 5 ton CO2 eq.
Verification carried out by certified technician/entity, the existence of records
Annual data communication to national environmental Agency until the end of the 1st quarter.