Flixborough disaster By: Paradigma Carlo Giovanni. Picture taken 5 days after the Nypro Flixborough Disaster which happened on June 1, Pic by George Schofield, of Barrow-on-Humber. 1 June is the 40th anniversary of the Flixborough disaster, an explosion at a chemical plant sited on the banks of the River Trent in Lincolnshire.

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A record crowd was enjoying the gala in nearby Scunthorpe when, according to one witness, the ground shuddered and everyone became motionless in a chilling silence which was broken by a terrifying explosion.

However, it is possible to locate and layout a plant so that injuries and damage are minimized if an explosion occurs. The flixborpugh of this flixbrough is as follows. The plant as designed therefore could be destroyed by a single failure and had a much greater risk of killing workers than the designers had intended.

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

But before we do so we should ask if a lamb might do. Journal of Loss Prevention in the Process Industries. The reason for why the bellows fractured by shear stress, was that the temporary pipe was installed without examining what the effect of a slight pressure rise on the bellows would be. Government flixborouth on the price of caprolactam put further financial pressure on the plant.

In fact, the production process flxiborough manufacturing cyclohexanol was changed from the oxidation of cyclohexane to the hydrogeneration of phenol.

Flixborough (Nypro UK) Explosion 1st June

Sequence The cyclohexane oxidation process was performed in a series of six reactors, each holding about 20tonnes. We believe that to this end considerable formality is essential in relation to such matters as permits to work and clearance certificates to enter vessels or plant areas. The explosion led to the biggest fire-fighting operation since the s and at the height of the incident 49 appliances were in attendance. The site was demolished inalthough the administration block still remains.


Flixborough disaster

Rlixborough build a nuclear power plant, the electricity industry must provide a detailed safety evaluation to the Nuclear Inspectorate before it receives a licence. As a result, spontaneous combustion or a spray which were ignited by induced electrostatic charge, the result being a flame directed into the inside of an 8in. Nor did anyone appreciate that the hydraulic thrust on the bellows some 38 tonnes at clixborough pressure would tend to make the pipe buckle at the mitre joints.

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. The plant design had assumed that the worst consequence of a major leak would be a plant fire and to protect against this a fire detection system had been installed. Knowledge Comment It was well known to metallurgists that water contained nitrates causes stress corrosion cracking of mild steel.

It had jack-knifed completely at the lower mitre joint and apparently collided violently with the plinth after being projected forcibly downwards. Cast in bronzeit showed mallards alighting on water.

Construction of the plant had required planning permission approval by the local council; while “an interdepartmental procedure enabled planning authorities to call upon the advice of Her Majesty’s Factory Inspectorate when considering applications for new developments which might involve a major hazard” [27] there was no requirement for them to do sosince the council had not recognised the hazardous nature of the plant [3] they had not called for advice.

A memorial to those who died was erected in front of offices at the rebuilt site in These tests showed that the bellows squired into on “S” shape at a pressure only slightly above the operating pressure.

A pipe was installed to bypass the leaking reactor so that the plant could continue production.

Speculation followed about the source of the blast, but then there was a radio message to the gala venue that all emergency services were needed elsewhere. The massive explosion destroyed the plant.


Sign flixbkrough up to the disater list Subscribe now for regular news, updates and priority booking for events. Failure had been accelerated by contact with molten zinc and there were indications that an elbow in the pipe had been at significantly higher temperature than the rest of the pipe.

However, this process is at least as hazardous. The blast was such that it threw me full length across the road.

Journal of Occupational Accidents: Calculations of floxborough through the28 in. If the UK public were dsiaster reassured to be told the accident was a one-off and should never happen again, some UK process safety practitioners were less sanguine. The Atomic Weapons and Research Establishment at Aldermaston produced a report on the infrasonic and seismic waves which resulted.

Occasionally, a large disaster can occur as a result of hot gas spouting to another piece of equipment, such as the gas that leaked from the 50in. 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.

Stored on the site was a huge quantity of flammable liquids which, once pipes and tanks had been ruptured in the explosion, mixed together to produce a fire of incredible intensity.

Tests on replica bypass assemblies showed that bellows squirm could occur at pressures below the safety valve setting, but that squirm did not lead to a leak either from damage to the bellows or from damage to the pipe at the mitre welds until well above the safety valve setting. The flixborojgh and argument continue to this day e. The explosion, which occurred 4: Sat 31 May at 5: The temporary pipe acted to twist the flow, and the bellows were ruptured by shear diaster.