Presentation on theme: "Boiler and pressure vessel accidents The following pictures show damage caused by accidents to boilers and pressure vessels."— Presentation transcript:
1Boiler and pressure vessel accidents The following pictures show damage caused by accidents to boilers and pressure vessels.
2Buffalo, New York 1983 “It looked like a battleground” Two days after Christmas 1983, the peace and tranquility of Buffalo, New York was abruptly shattered by an explosion of such magnitude that its enormity was almost impossible to comprehend. The aftermath of the explosion left the appearance of a major battleground, rather than that of an average city residential block. What caused this horrifying scene? A gas explosion caused by the release of liquid LP gas on the second floor of a warehouse
3The cause was a pressure vessel measuring only three feet by eight feet, containing 230 gallons of liquid propane. The vessel was being moved via forklift when it rolled off the forks, and a nozzle broke off causing the gas to escape. LP gas being heavier than air stayed near the ground. A spark caused the gas to explode and caused the following results:
6Liquid Oxygen Cylinder Explosion Improper methods used to render scrap cylinder unserviceableUnsafe modifications to cylinder designTwo individuals (ages 42 and 60) found a liquid oxygen cylinder that had been removed from service and left at a scrap metal dealerThe individuals were self-employed in scrap metal cutting operations and intended to use the cylinder in their workThe Pressure Relieving Devices were removed and pluggedThe cylinder was filled while onboard a pickup truckThe cylinder, which had no vacuum, was now unable to vent excess pressureWhile being transported down a busy highway, the pickup truck experienced a flat tireShortly thereafter, the cylinder exploded with the results shown in the following slides
7Pickup truck on which the cylinder was being transported
8Both inner and outer shells separated at bottom welds Annular Space
9Cylinder exploded at 12:40 PM while transport vehicle was parked on busy Interstate highway Vehicle LocationCylinder Trajectory
10The blast blew one individual across 5 lanes of traffic The blast blew one individual across 5 lanes of traffic. The other was blown approximately 40 feet. Both survived
11Note that the media reported the event as a Butane cylinder explosion but it was really an O2 cylinder
12LP Gas storage sphere collapsed while being filled for a hydrostatic pressure test killing a worker underneath. Support legs had corroded due to water trapped between insulation and support column.
13This is an example of brittle fracture caused by using cold water for a hydrostatic pressure test and then pressurizing vessel. The temperature of the water caused the metal to become brittle.
17First floor classroom after cast iron boiler explosion
18Front of school building viewing from exterior of building.
19View from basement boiler room looking up through ceiling to 1st floor
20The Incident A defective, high pressure, steam boiler ruptured. High vibrations were heard just before the boiler ruptured.The resultant explosion on rupture damaged nearby vessels containing flammables.The flammable Loss Of Containment resulted in further fires and explosions.Results23 workers were killed.Nine are still missing.(at time of report)74 were injured.$800,000,000 (U.S.) estimated property damage.
24Flames light the sky after an explosion at Algeria's largest refinery and principal oil exporter in the port city of Skikda,500 km (310 miles) east of the capital Algiers, early January 20, 2004.Rescue workers searched through rubble for missing worker onTuesday after a huge explosion at its key gas installations killed 23 peopleon Monday evening, official media said.
25Boiler explosion in private residence Boiler explosion in private residence. This slide shows family room and daughter’s bedroom after explosion.