Explosion prevention measures.

EN 1127-1   Describes explosive atmospheres
EN 60079  Explosion protection electrical equipment
EN 13643   Explosion protection mechanical equipment

  • Basic method and requirements     EN 13463-1
  • fr  Flow restricting enclosure   EN 13463-2
    ( categorie 3 equipment only)
  • d   Flameproof enclosure   EN 13643-3
  • c   Constructional safety   EN 13463-5
  • b   Control of ignition sources   EN 13463-6
  • p   Pressurization   EN 13463-7
  • k   Liquid immersion   EN 13463-8

NPR 7910 (dutch Practical Guideline) Interpretes the standards EN 60079 10 -1 & 2

VOC Sensor
LEL monitor

Ignitability according to EN 1127-1

Nr. Description Cause Measures NPR 7910-2, appendix D.3
       
1 Hot surfaces Possible Procedure D.3.2
2 Flames and hot gasses (incl. glowing particled) Possible Procedure D.3.3
3 Mechanically caused sparks Possible Non-sparking constructions D.3.4
4 Electrical equipment Possible Design
5 Drifting currents & cathodic protection Possible Procedure D.3.5
6 Static electricity Possible Design D.3.6
7 Lightning Outdoors Cage of Faraday D.3.5
8 Radio frequent interference 104Hz < f< 1011Hz Seldom EMC directive Not considered in the NPR 7910
9 Electromagnetic waves3 x 1011Hz till 1015Hz Seldom EMC directive
10 Ionising radiation Seldom Design
11 Ultrasonic noise Seldom Design
12 Adiabatic compression and shock waves Possible Design
13 Exothermic reactions, incl. self ignition of dust. Possible Design D.3.7

 

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