Can sealing a phone (that is not turned off) in a plastic bag in a fire- and explosion-proof area serve as a means of explosion protection?

Agreed; explosion isolation can also serve as an explosion prevention measure, and it is important to ensure tight sealing.

It is not considered an explosion-proof type. Flameproof type: a type of structure for explosion-proof electrical equipment. In this flameproof design, all the components of the equipment that could ignite explosive gas mixtures are enclosed within a housing. This housing is capable of withstanding internal explosions caused by combustible mixtures that penetrate through any joints or gaps in the housing, without suffering damage; it also prevents ignition of an explosive environment outside the housing caused by one or more gases or vapors (see standard GB 3836-2). All components that may generate sparks, arcs, and dangerous temperatures are placed within an explosion-proof enclosure, which separates the internal space of the equipment from the surrounding environment. The flameproof enclosure contains gaps, and due to the breathing action of electrical equipment and gas penetration, explosive gas mixtures may form inside it. When an explosion occurs, the enclosure is able to withstand the resulting explosive pressure without being damaged. Moreover, the gaps in the enclosure’s structure help to cool the flame, reduce its spread rate, or interrupt the chain reaction that drives its progression, thereby preventing the flame or dangerous flame products from passing through these gaps and igniting the surrounding explosive environment – thus achieving the purpose of flame protection. Suppose there is an explosive gas inside the plastic bag; can the plastic bag withstand the explosive pressure generated internally? Obviously not, so it does not meet the definition of an explosion-proof type. Is it necessary for your factory to do this? Just store the phone in a non-explosion-proof area, right? It should be sealed in a plastic bag outside the explosion-proof area, right? Why bring it into the explosion-proof area? Even if it’s brought into the explosion-proof area, it still can’t be used. Moreover, plastic bags are prone to tearing, and their sealing effect isn’t very good; they’re not as airtight as balloons. You think, a balloon that has been inflated will leak a little over time, and it usually shrinks after a few days. How do you ensure that plastic bags are sealed properly?

Our company now prohibits employees from using their mobile phones at work

In principle, it’s possible, but it may not work in practice.

It should have some effect, but it is still recommended to place it in a non-explosion-proof area

This practice is highly irresponsible. Although mobile phones can help prevent static electricity and the like, it’s important to remember that they receive signals from transmission towers; there’s also the issue of frequency transmission, which poses its own risks.

This practice is highly irresponsible. Although mobile phones can help prevent static electricity and the like, it’s important to remember that they receive signals from transmission towers; there’s also the issue of frequency transmission, which poses its own risks.

You must prove, or rather constantly demonstrate, that this plastic bag is airtight. The best way to do this is by using a balloon in a semi-inflated state; the cheapest and most convenient option is BYT.

This post was last edited by “Hasty Passerby” on July 3, 2018, at 16:10. It’s better to buy an explosion-proof phone; only those with intrinsic safety features can truly ensure safety. The brand Gutex is quite good.