Any closed vessel having a liquid capacity over 60 U. S. gal (227 L) and not intended for fixed installation. Note: This includes intermediate bulk containers (IBCs) as defined and regulated by the U. S. Department of Transportation. NFPA 1, 2003 ed
National Fire Protection Association, Illustrated Dictionary of Fire Service Terms, Jones & Bartlett Publishers, MA. USA 2006. https://books.google.com.kw/books?id=W0WIRa3Gl4QC& printsec=frontcover&source=gbs_ge_summary_r&cad=0# v=onepage&q&f=false, (Fr Srvc - Amer) {141}