Standard

NEN-EN-IEC 60079-28:2015 en

Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation

205,85 224,38 Incl BTW

About norm

Status Current
Number of pages 79
Committee Explosieveiligheid
Published on 01-10-2015
Language English
NEN-EN-IEC 60079-28 specifies the requirements, testing and marking of equipment emitting optical radiation intended for use in explosive atmospheres. It also covers equipment located outside the explosive atmosphere or protected by a Type of Protection listed in IEC 60079-0, but which generates optical radiation that is intended to enter an explosive atmosphere. It covers Groups I, II and III, and EPLs Ga, Gb, Gc, Da, Db, Dc, Ma and Mb. This standard contains requirements for optical radiation in the wavelength range from 380 nm to 10 μm. It covers the following ignition mechanisms: • Optical radiation is absorbed by surfaces or particles, causing them to heat up, and under certain circumstances this may allow them to attain a temperature which will ignite a surrounding explosive atmosphere. • In rare special cases, direct laser induced breakdown of the gas at the focus of a strong beam, producing plasma and a shock wave both eventually acting as ignition source. These processes can be supported by a solid material close to the breakdown point.

Details

ICS-code 29.260.20
Dutch title Explosieve atmosferen - Deel 28: Bescherming van materieel en transmissiesystemen gebruikmakend van optische straling
English title Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation
Replaces

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