标准号:IS 4138-1977
发布日期:1978/3/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard lays down the safety requirements for work in compressed air undertaken in construction works, such as foundations of bridges, docks and tunnels.1.2 This standard does not cover working conditions of dress divers with helmet equipment.