Explosionproof equipment

Exceptions to the preceding requirements would apply where explosionproof equipment is needed building ceiling heights are such that the standard 3.7-m (12-ft) lift is all that wih ever be needed and loads will never exceed 1 to 1.5 tons. Safety requirements for lift trucks are mandated by OSHA, by NIOSH (National Institute of Occupational Safety and Health), by State Depts. of Labor, and often by individual company standards. Among these requirements are backup-movement signals, seat belts, overhead framework for pro-... 

Explosionproof Apparatus. The protection technique shall be permitted for equipment in those Class I, Division 1 and 2 locations for which it is approved. 

FPN) Explosionproof apparatus is defined in Article 100. For further information, see Explosionproof and Dust-Ignitionproof Electrical Equipment for Use in Hazardous (Classified) Locations, ANSI/UL 1203-1988. 

FPN No. 2) Low ambient conditions require special consideration. Explosionproof or dust-ignitionproof equipment may not be suitable for use at temperatures lower than -25°C (-13°F) unless they are approved for low-temperature service. However, at low ambient temperatures, flammable concentrations of vapors may not exist in a location classified Class I, Division 1 at normal ambient temperatures. 

Many times it may easier to relocate electrical equipment outside an electrically classified area rather than occur addition expense to obtain an explosionproof rating. For example most internal combustion engines are not rated for hazardous atmospheres. 

The feed tank is mounted on the ceiling using chains and a weighing cell. Continuous weighing of the feed vessel stands for an exact mass balance not influenced by pulsation of the feed pump, volumetric or viscosity effects. To ensure that the connected feed pipes do not block with solidifying liquid they are equipped with an explosionproof electric heating wire which holds an adjustable temperature. 

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... 

An enclosure designed to meet the explosionproof requirements of the US Mine Safety and Health Administration (MSHA) requirements as defined in 30 CFR, Part 18, (Schedule 2G).The equipment is to be used in mines... 

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