Regarding the question of whether intrinsically safe instruments can be installed in dust-explosion-proof areas
Thread Content
As we all know, explosion-proof areas are divided into gas explosion-proof and dust explosion-proof types, and the instruments or electrical equipment used must meet corresponding explosion-proof standards. Can intrinsically safe instruments designed for use in Zone 0 for gas explosion protection be used in areas where dust explosion prevention is required? Logically, these are two completely different concepts of explosion protection, but theoretically, it seems possible after all. I would appreciate some advice from those who are more experienced, thank you!
It can be placed there, but a safety barrier must be added
Foreign standards are acceptable, but domestic ones are not. Foreign standards are acceptable, but domestic ones are not
Is there a sufficient reason? When using intrinsically safe instruments, a safety barrier must definitely be installed. The question is, can it be used in a dust explosion-proof area, and what are the reasons?
What standards are there? Intrinsically safe and dust are two separate certification standards; for dust, dust explosion protection should be used. We generally handle them separately
Is there anyone who will answer? Is there anyone who will answer? Is there anyone who will answer? Is there anyone who will answer? Is there anyone who will answer? Is there anyone who will answer?
In practical applications, it should be possible, as both types of explosions require one crucial element: a source of fire. Inherent safety involves preventing the occurrence of such a source of fire, and this is essential for both combustible gases and combustible dusts. Therefore, by eliminating the source of fire, neither the gas nor the dust can explode. However, since the standards for explosion prevention differ in these two cases, it’s likely that various industries and organizations have their own regulations.
I cannot agree with this statement. The root of gas explosion prevention is controlling ignition sources. Dust explosion prevention is aimed at preventing dust accumulation on the surface of equipment in dusty environments, as this hinders heat dissipation. Over time, the heat generated on the equipment’s surface cannot be dissipated, resulting in high-temperature ignition sources. Therefore, the approach to dust explosion prevention is to control the surface temperature of the equipment.
Is there no expert to give guidance? Is there no expert to give guidance? Is there no expert to give guidance?
This post was last edited by wyqjlol on 2012-4-28 at 14:05. Intrinsic safety type and dust explosion-proof type are not part of the same classification system for explosion protection; therefore, they cannot be discussed together. Dust explosion prevention should be considered alongside gas explosion prevention, while intrinsic safety type should be classified together with flameproofing, sand filling, oil filling, and spark-free designs. In other words, under dust explosion prevention standards, intrinsically safe instruments are also possible – namely those in which the energy of the instrument’s circuits is kept below the ignition energy level in a dusty environment. If the owner’s instrument meets the design specifications for intrinsically safe instruments in dust-filled environments, then there will be no problem. But IA definitely won’t work; IA is intrinsically safe for gas explosion environments, while for dust explosions, it should be iD, I’m not quite sure. . . You can check GB3836
Actually, what you’re referring to are two different concepts; intrinsically safe products can certainly be used in those applications