(a) This Standard establishes performance requirements for air powered chain hoists for vertical lifting service involving material handling of freely suspended (unguided) loads using load chain of the roller or welded link types with one of the following types of suspension: (1) lug; (2) hook or clevis; (3) trolley. (b) This Standard is applicable to hoists manufactured after the date on which this Standard is issued. It is not applicable to: (1) damaged of malfunctioning hoists; (2) hoists that have been misused and abused; (3) hoists that have been altered without authorization of the manufacturer or a qualified person; (4) hoists used for lifting of supporting people; (5) hoists used for the purpose of drawing both the load and hoist up or down the hoist's own load chain(s); or (6) hoists used for marine and other applications as required by the Department of Defense (DOD).