API RP 2201 - 1995 Procedures for Welding or Hot Tapping on Equipment in Service (Eng)

American Petroleum Institute (API) Fourth Edition, September 1995. 23p. This publication covers the safety aspects to be considered when hot tapping, or when welding without hot tapping on in-service piping or equipment. It is not a substitute for job planning. A detailed, written procedure for hot tapping and welding should be prepared or reviewed before starting each job to ensure that all proper steps are taken.