Hazard pressure

See entry NITROAROMATIC ALKALI HAZARDS, PRESSURE INCREASE IN EXOTHERMIC DECOMPOSITION (reference 3)... 

Thermal hazard Reagent hazard Pressure (high/low) Hazardous byproduct formation Highlight Highlight Highlight Highlight... 

Viewing ports are expensive, increase the leakage potential, and may lead to a massive chemical release and hazard to personnel if the glass breaks. Viewing ports are therefore seldom justified, and should be avoided in hazardous, pressure, vacuum, and high- or low-temperature services. 

In general one supposes that the hazard potential of endothermic processes is small compared with that of exothermic ones. However, it must be checked whether one is dealing with a process capable of generating gas. If there is not suflftcient relief of the gas a hazardous pressure build-up may result [14]. 

Thermodynamic and fluid hazards Pressure High pressure... 

Many factors may contribute to the introduction of hazards Pressure to meet design or production schedules, job stress, lack of or poor communications, and lack of knowledge may influence hazard recognition and control. Missing or incomplete instractions, untrained personnel, insufficient funds, uncommitted managers, and failure to... 

Hazardous Pressure Systems Systems used to store and transfer hazardous fluids such as cryogens, flammables, combustibles, hypergols, etc. 

Although the simple hydrogen supply system layout as shown in Fig. 4.14 is operational in a laboratory envirorrment, additional valves are normally used in order to enhance the safety of system operation. This is normally achieved by inclusion of a shut-off valve upstream of the pressure reducer and a pressirre relief valve (safety valve) that will prevent hazardous pressure birild-up in the case of failtue of the pressure reducer (Fig. 4.15). The shut-off valve can be operated manually or as a control valve. Additioiral safety features may include a thermal activated fuse between the storage cylinder and shut off valve, filters, flow restrictors as well as a flame arrestor. 

Birk, A. M., and D. W. Dibble (1986). A Computer Model of a Rail Tank Car Carrying Hazardous Pressurized Liquids Exposed to External Fire Impingement. 1986 Hazardous Material Spills Confrrence Prevention, Control and Clean-Up Releases. May, St. Louis, MO. Rockville, MD Government Institutes, Inc. 

Does your operation involve a high-hazard pressure system ... 

Moore, C. V., The Design of Barricades for Hazardous Pressure Systems, Nuclear Engineering Design, 5, 1550-1566 (1967). 

More 2 Warning—Hydrogen gas is flammable. Hazardous pressure. 

Note 3 Warning—Flammable gases. Hazardous pressure. See Annexes A 1.1 through AI.S. 

Note 4 Warning—Compressed Gas, Hazardous Pressure. See Annex A 1.2. 

Note 7 Warning—Flammable Gases, Hazardous Pressure. See Annexes A1.2 and A1.3. 

Note S Warning —Hydrogen flammable gas. Hazardous pressure. 

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