AS 4774.2:2002 pdf free download.Work in compressed air and hyperbaric facilities Part 2: Hyperbaric oxygen facilities. 2.1 CHAIBER ROOM 2.1.1 General It shall be ensured that the floor can support the weight of the pressure vessel and all ancillary equipment, both when moving the chamber into place and under operating conditions. Although hydrostatic pressure testing is performed at the manufacturer’s...