Specifies requirements for fully automatic jacketed pre-vacuum steam sterilizers that operate at a sterilizing temperature of 134 degrees Celsius and are intended for use in hospitals and other non-industrial applications for the sterilization of porous loads, and instruments and utensils wrapped in porous material. The sterilizers are not intended for the sterilization of fluids, installation in areas associated with the use of flammable anaesthetics or volatile liquids, or downward-displacement cycles, unless they also comply with AS 2192.