This publication is designed to provide a better understanding of the problems and hazards encountered when installing hot tap connections on piping, vessels or tanks containing flammable or combustible liquids or gases. The essential elements of this pub
API RP 2201-2003 history
2003API RP 2201-2003 Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries (Fifth Edition)
1995API RP 2201-1995 Procedures for Welding or Hot Tapping on Equipment in Service