API std 2510 pdf download Fabrication Considerations for Vanadium-Modifed Cr-Mo Steel Heavy Wall Pressure Vessels A more likely LPG incident, and in the context of this pub-lication a more relevant one, is leakage from piping or othercomponents attached to or near the vessel followed by igni-tion, a flash fire or vapor cloud explosion,and a continuingpool fire and pressure (torch) fire....