This publication describes the primary hazards, the minimum performance requirements for equipment, and some of the applicable regulations for the transfilling of pressurized liquid oxygen. It is a guide for manufacturers and distributors of equipment used to transfill liquid oxygen for respiration as well as for individuals or organizations that perform transfilling activities.

This publication applies to specially designed cryogenic containers including portable containers, vehicle-mounted containers, storage tanks, portable tanks, and trailers. This publication also applies to the practice for the outfitting and operation of vehicles used in the transportation and transfilling of liquid oxygen used for respiration.

It does not apply to small patient-transportable units used in homecare applications.

NOTE—The operation and safety instructions for homecare units are provided as part of user/patient instructions for these systems and should address the hazards and the precautions necessary in the home environment.