Ignition sources welding

Minimize the probability of ignition by shutting off all ignition sources welding vehicles sparking electrical tools and other non-explosionproof electrical equipment flares incinerators and boilers (unless protected with flame arresters in the air inlets), actuated by a site-wide alarm... 

Hot Work. The objective of a hot work standard is to prevent fires, explosions, and other causes of injury which might result from workplace ignition sources such as welding (qv), cutting, grinding, and use of electrically powered tools. The OSHA standards have specific requirements (36,94) for fire prevention and protection and a permit system. 

Location of machine shops, welding shops, electrical substations, and other likely ignition sources... 

Sometimes maintenance activities can introduce additional hazards. These additional hazards may have an immediate effect, as in the case with providing an ignition source, or a delayed effect, such as what may happen when repairing the equipment with the wrong welding procedures or using repair parts of the wrong materials. 

Open Flames. Open flames are an obvious ignition source (others are subtle, obscure). One must control smoking, welding, burning and other flame sources in areas of potential hydrogen leakage. 

Use in well ventilated area away from all ignition sources. Switch off all electrical devices such as parabolic heaters, hot plates, storage heaters, etc., in good time for them to have cooled down before commencing work. Do not smoke, do not weld. Do not empty waste into sanitary drains. Take measures to prevent the build up of electrostatic charge. 

Titanium dioxide, TiOj, is a white powder and has the greatest hiding power of all white pigments. It is noncombustible however, it is a powder and, when suspended in air, may cause a dust explosion if an ignition source is present. It is not hsted in the DOT Hazardous Materials Table, and the DOT does not consider it hazardous in transportation. The primary uses are as a white pigment in paints, paper, rubber, and plastics, in cosmetics, welding rods, and in radioactive decontamination of the skin. 

ANSI Z49.1,10.8.4.3 29CFR1910.253(b)(5)(iii)(D) 29CFR1926.350(d)(l) 4.5.34.2 Fuel cylinder valves shall not be cracked near ignition sources such as flames, welding work, sparks, etc.. 

Fire and explosion hazard in dryers imposes extra requirements on plant maintenance. It is important to apply the general policy in a breakdown case or prevention measures as well as routine maintenance and turnaround periods. Special attention should be paid to maintenance in all safety systans and in that equipment responsible for the ignition sources. A work permit should be followed in all maintenance work, especially performing hot work like welding, cutting, or soldering. 

Polyurethane, Polyethylene, Flammable Gas and Others. Ignition Sources were classified to 6 items Spark from welding, Static electrical spark, Electrical spark, Overheating ignition. Anoxia and Others. 

In this paper. Lifecycle Physical Hazards of Extruded Polystyrene was extracted based on the Polymer Foam incident information, where the ignition sources were mainly Spark from Welding and Spark from Static Electricity. Regarding Burned Material, 8.5% were based on Flammable Gas. It seems to be released fix>m Polymer Foam, because Non-Flammable Gas is not used anymore, nowadays. 

Hot Work. Hot work permits must be issued for hot work operations (welding, brazing, grinding, or other fire or ignition sources) conducted on or near a covered process. 

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