Purging 03 : For the purpose of handling releases of flammable and combustible liquids and gases, the process of displacing vapors or gases from an enclosure or confined space
NFPA 329 Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases, 2005 ed. https://www.nfpa.org/assets/files/AboutTheCodes/32 9/329-F2009-ROP.pdf, (Recmm Prac: Hndlg Releases of Flamm and Comb Liqd and Gas - Amer) {299 NFC}