3306.1.1 Cleaning and purging of flammable gas piping systems.
FC § 3306.1.1
The cleaning and purging of flammable gas piping systems, including the cleaning and purging of such systems prior to placing them in service or removing them from service, shall be conducted in accordance with NFPA 56. Exceptions: 1. Compressed gas piping systems subject to the requirements of FC Chapter 53*, other than fuel gas piping systems.
2.Piping systems regulated by the Fuel Gas Code.
3.LPG systems subject to the requirements of FC Chapter 61*. * Editor's note: "FC" prefix added at the discretion of the editor.













