规定了在隧道、竖井和沉箱中工作的人员医疗监督、操作程序、设备和一般预防措施的要求，其中压缩空气是呼吸介质，工作区域的最大压力为4巴（400千帕）。附录包括医疗标准和检查表、医生信息、在压缩空气中工作的人员说明以及减压疾病信息。

Specifies requirements for medical supervision of personnel, operating procedures, equipment and general precautions for work in tunnels,shafts and caissons where compressed air is the breathing medium and the maximum presssure of the work area is 4 bar (400 kPa) gauge. Appendices include medical standards and examination forms, information for medical practitioners, instructions for persons working in compressed air and information on decompression illness.