Burst pressure

The product is considered nonhazardous for international transport purposes. However, it is an oxidizing agent sensitive to decomposition by water, direct sources of heat, catalysts, etc. Decomposition is accompanied by the Hberation of oxygen and heat which can support combustion and cause pressure bursts in confined spaces. Decomposition in the presence of organic material is rapid and highly exothermic. 

Pressure burst A failure in a filter, duct work, or an air handling unit due to high differential pressure. 

The vessel under gas pressure bursts into equal fragments. If there are only two fragments and the vessel is cylindrical with hemispherical end-caps, the vessel bursts perpendicular to the axis of symmetry. If there are more than two fragments and the vessel is cylindrical, strip fragments are formed and expand radially about the axis of symmetry. (The end caps are ignored in this case.)... 

Figure 7-8R. Low pressure bursting vents for explosion relief on storage silos, buildings, etc. Usually burst 1.0 to 8.0 psig depending on design. Round vents also available. By permission, Fike Metal Products DIv., Fike Corporation, Inc.

Dining preparation of tungsten(IV) dibromide oxide, appropriate proportions of reactants are heated in an evacuated sealed glass ampoule to 400-500°C. Initially only one end should be heated to prevent excessive pressure bursting the ampoule. See other GLASS INCIDENTS See other halogens, oxidants... 

In a printed circuit board etching line using copper(II) chloride solution, 45 wt% hydrogen peroxide solution was used to recover the copper salts. The peroxide header tank became contaminated with trace amounts of the etching solution, and catalytic decomposition of the peroxide led to a pressure burst of the tank. 

For display shells of 200 mm and above, reinforced fibreglass mortar tubes are invariably used. Welded steel tubes have long been considered to be amongst the safest because, in the event of a pressure-burst, the tube will split in the vicinity of the weld, thus creating a predictable danger zone. With seamless tubes the fragmentation is completely random and creates a shrapnel hazard for the fireworks operator. 

The hydrogen pressure burst the reboUer and the contents of the column then ignited, turning the distillation column into a primitive but effective rocket that took off. Fortunately, no one was around at either the launch site or landing site. However, the town s residents heard a loud bang, and they had been highly sensitized from the previous one when the AN barges blew up a few years before. 

The liquid sulfur dioxide solutions described in the preparations have a vapor pressure of about 3.3 atm at 21 °C. Therefore, well-constructed glass vessels and a glass (or metal) vacuum line must be employed to prevent pressure bursts. Thick leather gloves, safety goggles, a face shield, and a rubber apron should be worn and the experiments have to be conducted behind a safety shield or explosion-proof glass in a fume hood to prevent possible contact with the reaction mixtures as well as with AsF5 and SbFs. 

Pressure bursting discs may rupture, tail gas release, h) Ensure correct sizing on pressure relief... 

Caution. All reactions should be conducted In a well-ventilated fume hood with appropriate precautions. Arsenic and antimony pentafluoride and arsenic trifluoride are very poisonous and hydrolyze readily to form Bromine is corrosive and is harmful to the skin and mucous membranes. Sulfur dioxide is poisonous and can generate 3 to 4 atmospheres pressure at room temperature. Well-constructed glass vessels or metal systems must be employed to prevent pressure bursts. The use of rubber gloves, safety glasses, and face shields is recommended. 

While a THF film (> 15 A) condensed on Li/Ag was warmed the gas composition in the UHV chamber was monitored using an ion gauge and the mass spectrometer. As expected, a pressure burst occured when the sample temperature reached about 163 K, the condensation point of THF, and a gas composition characteristic of vapor phase THF was detected by mass spectrometer. 

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