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ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
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08/20/18 Application of Explosion Proof LED Lights for Class I, Group D Atmospheres (Shipyards)

Article - August 20, 2018 By

Explosion Proof LED Light - Inline Transformer 120V/12V - 70 Watt LED Bulb - Class 1 Groups C and D

Application of Explosion Proof LED Lights for Class I, Group D Atmospheres (Shipyards)

Shipyards are known to contain flammable substances in the environment. Because of this, the Occupational Safety and Health Administration (OSHA) recommends the use of Class I explosion proof LED fixtures.

More specifically, OSHA highlights the application of units approved for Class I, Group D atmospheres for shipyard operations. This recommendation is cited in OSHA 1915.36 (4).

Class I, Group D

Understanding the type of substances in the Group D classification can help operators improve safety at the site. Group D refers to volatile gas and vapors with a minimum ignition ratio that is higher than 0.80. Examples of substances under this category include the following: butane, ammonia, ethanol, gasoline, octane, vinyl acetate, methane and more.

Considered as one of the largest groups in the classification of hazardous and explosive environments, ignitable temperature ranges are wide for the substances, from 206C (octane) to 478C (methyl/propanol type 2).

At shipyards, the substances in Group D can be found in various sections of the site. For instance, workers performing re-painting tasks in enclosed cabins (confined spaces) of the vessel are highly prone to explosive risks. The presence of combustible chemicals, solvents and painting mixtures, coupled with lack of ventilation, makes such areas extremely hazardous.

Explosion Proof LED Lights

Explosion proof LED lights in shipyards are designed to reduce interactions between sparks and combustible materials or environments. For general illumination, explosion proof high bay LED fixtures are commonly installed at the facility. Tank cleaning and blasting gun LED light attachments are applicable to maintenance, restoration and re-painting of drums, vessel storage rooms and other confined spaces.

Lastly, to prevent the accumulation of Group D substances in shipyards, adequate ventilation is required. This may come in the form of blowers, portable ducts, fans and coolers.

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