Sparking hazard

The key to safety in explosives manufacturing is to use isolated high-velocity nitric acid reactors that have only a veiy small hold up at any one time (that is, only a small amount of dangerous material is held up inside the reactor at any time). Units are widely spaced, so any accident involves only small amounts of explosive and does not propagate through the plant. Fire and electrical spark hazards are rigorously controlled, and manpower reduced to the absolute minimum through automation. 

The susceptibility of magnesium to thermite sparking when dropped onto rusty surfaces can preclude its consideration for applications involving a spark hazard, e.g. tankers carrying inflammable petroleum products. 

In explosive facilities and locations where the atmosphere may contain combustible dusts, or flammable vapors or gases, ferrous metal surfaces should not be coated with aluminum paint due to the potential sparking hazard. 

Analyzer safety There are several potential safety hazards, and the source is one - providing localized temperatures in the range of 1100-1500 K. The laser and its power supply, which is a potential high voltage spark hazard, are other examples. Methods for thermal isolation and instrument purging can address the source issues. The discharging of any charge within the capacitance circuitry of the laser power supply addresses the spark hazard issue. 

Wood, J.P., Spark hazard ko d with conductive tubing, Chemical Processing, January 1969. 

This synthesis should be carried out in a hood away from flame and free of electrical spark hazards to avoid fire or explosion due to the evolution of hydrogen gas in step 1 and to avoid inhalation of hazardous vapors. 

Precaution Closed containers may explode when exposed to extreme heat prevent electrostatic buildup dusts may be ignited by hot surfs., open flames, elec, sparks ground equip, to reduce sparking Hazardous Decomp. Prods. CO, CO2... 

Properties affected Attraction of (especially) lightweight plastics (films, fibres, etc.) to each other and to other materials improved operation of high-speed machinery (e.g. for packaging) shielding equipment against electromagnetic interference reduction/elimination of spark hazard in handling electronics, chemcials. medical equipment. 

Very low internal resistance allows extremely rapid discharge when shorted, resulting in spark hazard similar to other capacitors of similar voltage and capacitance (generally much higher than electrochemical cells)... 

NIR analyzers do not use flammable diluents, reagents, or carrier gases, but the light source, which in most instruments is an incandescent tungsten-halogen lamp operated at high temperature. The lead-salt photoconductive NIR detectors require up to 200 VDC, which represents electrical spark hazard if the instrument enclosure is not designed appropriately. 

Necessity for safety from spark hazards and accumulation of hydrogen in enclosed spaces... 

Toxicology May cause burning, redness, and tearing of eyes on direct contact may cause skin irritation, dermatitis overexposure to hot vapors may cause nausea, respiratory tract irritation, pneumonitis, pulmonary edema mod. toxic by ing. may cause Gl upset TSCA listed Precaution Avoid contact with open flame or sparks Hazardous Decomp. Prods. Hydrocarbon decomp, prods., silica HMIS Health 1, Flammability 1, ReactivityO... 

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