Electricity explosions

Hazard, i.e. the potential of the material to cause injury under certain conditions (flammability, explosion limits in air, ignition and autoignition temperatures, static electricity (explosions have occurred during drying due to static electricity), dust explosion, boiling point, fire protection (specification of extinguishers, compounds formed when firing), R S (nature of special risk and safety precautions). Table 5.2-5 lists hazards associated with typical chemical reactions. 

Abstract. Nanopowders of nonstoichiometric tungsten oxides were synthesized by method of electric explosion of conductors (EEC). Their electronic and atomic structures were explored by XPS and TEM methods. It was determined that mean size of nanoparticles is d=10-35 nm, their composition corresponds to protonated nonstoichiometric hydrous tungsten oxide W02.9i (OH)o.o9, there is crystalline hydrate phase on the nanoparticles surface. After anneal a content of OH-groups on the surface of nonstoichiometric samples is higher than on the stoichiometric ones. High sensitivity of the hydrogen sensor based on WO2.9r(OH)0.09 at 293 K can be connected with forming of proton conductivity mechanism. 

Keywords X-ray photoelectron spectroscopy, method of electric explosion of conductors, nonstoihciometric oxides, electronic structure, nanoparticles. 

ELECTRICAL EXPLOSION TECHNOLOGY FOR NOVEL CARBON NANOMATERIALS PRODUCTION... 

Methane is highly flammable and is therefore an explosion and fire hazard the lower explosive limit is 5-15% by volume. Extreme care must be taken to keep areas of high concentration free from ignition sources, such as sparks from static electricity. Explosion-proof equipment should be used in these areas. Many people believe that methane is an important greenhouse gas, and that the apparent threefold increase in atmospheric concentrations over the last 200 years affects the stratospheric ozone layer and the oxidizing capacity of the atmosphere. 

Motor J hp, split-phase induction, 60-cycle, 110-volt, a-c, General Electric explosion-proof motor... 

The AMDR is equipped with some instruments that are used to detect the surrounding environment and transfer information back to the control centre. The explosion risk is very high when these instruments and equipments in service. So, we should use the intrinsically safe electrical equipment or other special design for the electrical equipment. In principle, the flame-proof equipment is not allowed to use in mine. But the intrinsically safe electrical equipment is very rarely at present, especially the power supply, motor and other key equipments. Therefore, the AMDR adopted the safety strategy of flame-proof after the redundant safety measures drawn up in the case of the basic principles of electric explosion-proof allowed. 

Yellow (black symbols and text) Hazard (risk of danger) bHfication of hazards (electrical, explosive, radiation, chemical, vehicle, etc.) Warning of threshold, low passages, obstacles... 

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