> -----Original Message----- > From: Hanson / Coleman Ops Plnt Supt (tplsu) > [SMTP:TPLSU@tengizchevroil.com] > Sent: Friday, January 14, 2000 7:41 PM > To: 'engi@chevron.com' > Subject: FW: The power of collapsing steam > > > > > This is a learning experience picked up from a CCPA contact at Dow. It > just goes to show the power of collapsing steam. > > "If you ever need something visual to reinforce why we need to provide > vacuum relief perhaps these pictures will be of assistance. > The tank car in the attached photos is not one of Dow's. It is a general > purpose car that was being steam cleaned to prepare it for some > maintenance work. The job was still in progress at the end of the shift > so the employee decided to block it in. Problem was there was no vacuum > relief, the car cooled, the steam condensed and the car imploded." >