Detonable pyrophoric

Once accepted, the facilities must store the cylinders. The best way to store a detonable pyrophoric is in the open. Since cylinders should not be exposed to temperatures above 125"F, a sunshade becomes critical in the southwest. Considerations of ice and snow need to be evaluated in the north. Bunker storage has been considered. This becomes very costly since a bunker might need to be designed to 80 psi. A well-designed fire wall will withstand only about 1 psi. 

The tools utilizing the detonable pyrophorics need to have a coimec-tion panel similar to that found in the dispensing area. It is important to maintain 100 ft. per minute across any opening to prevent stagnation of air. 

Reactivity (instability) information Acceleration rate calorimetry Differential thermal analysis (DTA) Impact test Thermal stability Lead block test Explosion propagation with detonation Drop weight test Thermal decomposition test Influence test Self-acceleration temperature Card gap test (under confinement) JANAE Critical diameter Pyrophoricity... 

Formerly used as a diazomethane precursor, this material will detonate under high impact, and a sample exploded when melted in a sealed capillary tube [1], Although the crude product from the aqueous nitrosation is pyrophoric, recrystallised material is stable (though powerfully mutagenic) [2],... 

Pyrophoricity and detonation behaviour of titanium hydride powders of various particle sizes were studied in comparison with those of titanium metal powders [1]. Maximum dust explosion pressures of 8.2 bar, with a maximum rate of rise of 816 bar/s have been recorded [2]. 

FAE is presently a two-step process an expl burster disperses the fuel into a suitable fuel/air cloud, then a second-event expl, activated within an easily-detonable region of the cloud, initiates detonation of the entire fuel/air cloud. A single-event FAE can be produced by the simultaneous dispersal and detonation of the fuel/air cloud as it is being formed. Alternatively, a spontaneous FAE can be achieved by dispersing a pyrophoric fuel into an appropriate fuel/air cloud within the ignition induction period. Such a single-event system has decided advantages over the two-event FAE... 

Solid Ti can be deton by friction when in contact with red fuming nitric acid (Ref 3) and will bum in air at 700—800°. Powdered Ti (<200 mesh) is pyrophoric. It can be deton by electric spark (10 mj) in air, N2 or C02 (Refs 2 and 6a). It ignites in air at 250° and will burn in an atm of N2 above 800° or in C02 above 550°. The application of w to burning Ti can cause an expln (Ref 8). Solid Ti can react explosively in the cold with metal carbonates. In the powdered form, Ti can react explosively when heated with K chlorate, nitrate or permanganate. Mixts of powdered Ti and LOX are also extremely expl (Ref 12)... 

Pyrophoric Osmium Dioxide.—The oxide prepared by reduction of alkali osmates with alcohol or by hydrolysis of ammonium chlorosmate is not pure, but contains small quantities of organic substances or alkalies. When dry it is liable to ignite upon exposure to air, and even to detonate if warmed4 to 800° C. directly it meets the air. 

Caution, Hydrazine-hishorane does not melt up to 100° and may explode violently if heated rapidly much beyond 100°. The hisborane may also be detonated by impact. Both the monoborane and the bisborane are extremely flammable but not pyrophoric. Shielding and remote-control manipulation are recommended. 

For non-pyrophoric/detonable hazardous gases, two gas rooms were constructed. These rooms are accessed from the hazardous material area, but are distinct rooms opening off that area. This provides two levels of security as access to the hazardous material area is limited and a distinct key is needed to access the gas rooms. Each hazardous gas is located inside a gas cabinet within the gas room, with a maximum of two gas cylinders per cabinet. Cylinders sharing a single cabinet must be compatible gases and of like... 

Combustion products can be reduced with a water spray or fog. Ventilate the area of a leak prior to the return of personnel. In some cases, leaks of silane will not ignite immediately. A delay of ignition can take place with devastating force. Storage and use locations should be constructed to prevent worker exposure to such possible detonations. The use of silane mixtures with inert gas or hydrogen at 2 percent or lower silane concentrations will eliminate the pyrophoric hazard in the use of silane. 

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