The cloud, on coming in contact with an ignition source probably a furnace at a nearby hydrogen production plant exploded, completely destroying the plant. Around 1, buildings within a mile radius of the site were damaged. The fuel-air explosion was estimated to be equivalent to 15 tonnes of TNT and it killed all 18 employees in the nearby control room. Nine other site workers were killed, and a delivery driver died of a heart attack in his cab.
Twenty-eight workers were killed and a further 36 suffered injuries. It is recognised that the number of casualties would have been more if the incident had occurred on a weekday, as the main office block was not occupied.
Offsite consequences resulted in fifty-three reported injuries. Property in the surrounding area was damaged to a varying degree. Prior to the explosion, on 27 Marchit was discovered that a vertical crack in reactor No.
The plant was subsequently shutdown for an investigation. The investigation that followed identified a serious problem with the reactor and the decision was taken to remove it and install a bypass assembly to connect reactors No.
During the late afternoon on 1 June a 20 inch bypass system ruptured, which may have been caused by a fire on a nearby 8 inch pipe. This resulted in the escape of a large quantity of cyclohexane. The cyclohexane formed a flammable mixture and subsequently found a source of ignition.
Eighteen fatalities occurred in the control room as a result of the windows shattering and the collapse of the roof. No one escaped from the control room. The fires burned for several days and after ten days those that still raged were hampering the rescue work.
Failings in technical measures A plant modification occurred without a full assessment of the potential consequences. Only limited calculations were undertaken on the integrity of the bypass line. No calculations were undertaken for the dog-legged shaped line or for the bellows. No drawing of the proposed modification was produced.
Design Codes - Pipework:The Flixborough disaster was an explosion at a chemical plant close to the village of Flixborough, North Lincolnshire, England on Saturday, 1 June It killed 28 people and seriously injured 36 out of a total of 72 people on site at the time.
Flixborough (Nypro UK) Explosion 1st June Accident summary. At about hours on Saturday 1 June the Nypro (UK) site at Flixborough was severely damaged by a large explosion. Apr 24, · The immediate cause of the main explosion was the rupture of the 20 inch by-pass assembly between reactors 4 and 6.
40 to 60 tons of cyclohexane escaped and were ignited 30 seconds after by the reforming tower forming a cloud two hundred meters in diameter and meters in height.
The Flixborough Works of Nypro (UK) Ltd. were demolished at about p.m. on Saturday June 1st. , by an explosion of warlike dimensions which was the equivalent of 15 tonnes of TNT.
Of those working on the site . Incident Summary: Flixborough Case History.
Building Process Safety Culture. Topics: Process Safety Culture. It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file. Click here to download the PDF file.