From the US Department of Labor:
The U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) has revised its acetylene standard. A final rule replaces references to outdated industry standards with updated references reflecting current industry practices.
The revised standard requires that in-plant transfer, handling, storage and use of acetylene cylinders comply with Compressed Gas Association Pamphlet G-1-2003, titled Acetylene. The revised standard also updates references for the provisions addressing piping systems, as well as acetylene generators and filling acetylene cylinders.
Click on the links for more information.