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Electrical area classification

The overall intent of electrical area classification is to provide for safety of personnel and equipment. This is achieved by the elimination of electrical ignition sources near combustible gases or vapors that could explode or bum. The specific reasons for classifying facilities into electrical hazardous areas typically are  [Pg.143]

To ensure that sources of ignition are safety separated from sources of combustible liquids and gases. [Pg.143]

To ensure electrical apparatus selected for use near combustible liquids and gases is of adequate design and construction to prevent ignitions. [Pg.143]

To assist in the location of air inlets for ventilation systems and combustion equipment [Pg.143]

To define the extent of flammable vapor travel from vents, drains and other open hydrocarbon sources. [Pg.144]

Examples of electrical area classification for various operations... [Pg.401]

Electrical area classification distances Process Plant Layout pages 568-577... [Pg.402]

The vendor shall be responsible for the selection of proper range, pressure rating, materials of construction and electrical enclosure based on process conditions and electrical area classification. All instruments and controls shall be in accordance with Specification ME-0-JN400. [Pg.307]

Cascading effects Check valve Clogged (of filter) Consensus standard Conservation vent Dike, berm Discharge valve Division (in electrical area classification) Downspout Expansion joint Explosion proof Faucet... [Pg.433]

The NEC group method for classifying flame arresters is similar to that used for electrical area classification. NFPA 497 (1997) provides the criteria for classilying gases into NEC groups for suitability for electrical area classification. [Pg.99]

Electrical area classification AIA, ANSI, API, CMA, FIA, FM, NFPA, NSC, OIA, OSHA, USCG... [Pg.489]

Electrical area classification distances Distances for storage of explosives... [Pg.273]

In USA the electrical area classification for petroleum facilities is usually defined by the requirement of NEC (NFPA 70), API 500 and NFPA 30 that are similar in content. [Pg.146]

Control of static electricity and stray electrical currents 4.3.1. Electrical Area Classification... [Pg.33]

In recent years, electrical area classification has become more focused on risk of release and distance away from the release point than the risk of flammable vapor/air mixture. Therefore, equipment types are often mixed inside buildings or units instead of all being explosion-proof. [Pg.161]

Forced ventilation to limit hazardous gas concentrations in the event of a spill or release (the electrical area classification of the area may be contingent on the use of forced ventilation)... [Pg.236]

Does the proposal introduce flammable liquids or gases or combustible dusts into areas that do not have the proper electrical area classifications ... [Pg.264]

See other pages where Electrical area classification is mentioned: [Pg.319]    [Pg.356]    [Pg.420]    [Pg.39]    [Pg.23]    [Pg.100]    [Pg.143]    [Pg.146]    [Pg.295]    [Pg.83]    [Pg.89]    [Pg.181]    [Pg.181]    [Pg.181]    [Pg.33]    [Pg.140]    [Pg.157]    [Pg.196]    [Pg.384]    [Pg.319]    [Pg.253]    [Pg.268]    [Pg.278]    [Pg.217]    [Pg.233]   
See also in sourсe #XX -- [ Pg.143 , Pg.146 ]

See also in sourсe #XX -- [ Pg.746 , Pg.756 ]

See also in sourсe #XX -- [ Pg.230 , Pg.231 , Pg.232 ]



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