In , a huge explosion ripped apart a chemical plant in to confirm that the disaster at the Nypro plant at Flixborough was the result of. Failure Knowledge Database / Selected Cases. 1. Disaster of Chemical Plant at Flixborough. June 1st. , Flixborough UK. TAKEGAWA. Flixborough chemical plant explosion marked with service The disaster at Nypro chemical plant, near Scunthorpe, Lincolnshire, left

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Science matters: Flixborough

The cyclohexane oxidation process is still operated in much the same plant design in the Far East. Instead [w] installations with an inventory of f,ixborough fluids above a certain threshold or of toxic materials above a certain ‘chlorine equivalent’ threshold should be ‘ notifiable installations ‘. However theoretical modelling suggested that the 197 of the bellows as a result of squirm would lead to a significant amount of work being done on them by the reactor contents, and there would be considerable shock loading on the bellows when they reached the end of their travel.

If the bellows were ‘stiff’ resistant to squirmthe shock loading could cause the bellows to tear at pressures below the safety valve setting; it was not impossible that this could occur at pressures experienced flixborouugh start-up, when pressure was less tightly controlled.

The National Archives holds a great deal of documentation about the disaster and its aftermath, including numerous plans, drawings, photographs and witness statements as well as the Report of the Court of Inquiry. Inaugural lecture given on 22 February ” PDF. Wed 11 Jun at 8: Unlike the Court of Inquiry, its personnel and that of its associated working groups had significant representation of safety professionals, drawn largely from the nuclear industry and ICI or ex-ICI.

Flixborough 1974 chemical plant explosion marked with service

It was postulated that there had been bulk water in reactor 4 and a disruptive boiling event had occurred when the interface between it and the reaction mixture reached operating temperature. It was a failure of this plant that led to the disaster. The Flixborough disaster was an explosion at a chemical plant close to the village of Flixborough diwaster, North LincolnshireEngland on Saturday, 1 June Critics felt that the Flixborough explosion was not the result of multiple basic engineering design errors unlikely to coincide again; the errors were rather multiple instances of one underlying cause: The foundations of properties severely damaged by the blast and subsequently demolished can be found on land between the estate and the village, on the route known as Stather Road.


The explosion led to the biggest fire-fighting operation since the s and at the height of the disaste 49 appliances were in attendance. No drawing of the proposed modification was produced.

Languages Afrikaans Deutsch Edit links. This article needs additional citations for verification. There had been no similar air leaks and consequently no similar water sprays on the other reactors. No-one appreciated that the pressurised assembly would be subject to a turning moment imposing shear forces on the bellows for which they are not designed.

The reactors were normally mechanically stirred but reactor 4 had operated without a working stirrer since November ; free phase water could have settled out in unstirred reactor 4 and the bottom of reactor 4 would reach operating temperature more slowly than the stirred reactors.

Flixborough Disaster anniversary: New pictures come to light after 43 years

The blast was such that it threw me full length across the road. My grandfather in Grimsby heard the explosion and thought it was very strange thunder. Government controls on the price of caprolactam put further financial pressure on the plant.

The debate and argument continue to this day e. We had a flkxborough with a Hamburg firm and, if my aged memory serves me correctly, we were bringing in 30, tonnes a week in small coasters. Retrieved 25 June The proponent of the 8-inch gasket failure hypothesis responded by arguing that the inch hypothesis had its share of defects which the inquiry report had chosen to overlook, that the 8-inch hypothesis had more in flixborougj favour than the report suggested, and that there were important lessons that the inquiry had failed to identify:.

It was recognised that the number of casualties would have been even higher had the incident occurred on a weekday. A pipe was installed filxborough bypass the disastre reactor so that the plant could continue production.

I was a young child at the time and remember the veil of tragedy that fell over that part of Lincolnshire. HSE aims to reduce work-related death, injury and ill health. Around 1, buildings within a mile radius of the site in Flixborough itself and in the neighbouring villages of Burton upon Stather and Amcotts were damaged, as were nearly in Scunthorpe three miles away ; the blast was heard over thirty miles away in Grimsby and Hull.


Tests by the Fire Research Establishment had shown this to be less effective than intended. The Factory Inspectorate has standing only where it has promulgated specific regulations [13].

After the disaster, two of the twelve bolts were found to be loose; the inquiry concluded that they were probably loose before the disaster. But pipe-lines were mostly small, and the amount of flammable gas or liquid on the plant was not usually large.

Picture taken 5 days after the Nypro Flixborough Disaster which happened on June 1, But just over six months later the hefty memorial, first positioned outside the new Nypro headquarters and then moved inwas gone — taken in an act of theft which caused further shock to the community.

Scunthorpe United Scunthorpe United reveal detailed plans for redevelopment of Glanford Park The club have unveiled detailed information on what the stadium could look like – and there are also plans for up to new homes at the site. Nypro argued that the bolts had been loose, there had consequently been a slow leak of process fluid onto lagging leading eventually to a lagging fire, which had worsened the leak to the point where a flame had played undetected upon the elbow, burnt away its lagging and exposed the line to molten zinc, the line then failing with a bulk release of process fluid which extinguished the original fire, but subsequently ignited giving a small explosion which had caused failure of the bypass, a second larger release and a larger explosion.

Flixborough led to a widespread public outcry over process plant safety.