Regarding whether to install flammable or toxic gas detection alarms in the paint storage room

It seems like we haven’t set anything, but there is forced drainage.

I can provide equipment to calibrate the alarm: lol

Shouldn’t two settings be available? ;P I might still need to look up the standards myself. The investment should not be large; \"forced ventilation + dual alarms + explosion-proof electrical equipment\", along with regular inspections and calibration records, should be sufficient to meet safety requirements and those set by experts, as well as to satisfy inspections at all levels.

Aside: Last year, I was really frustrated by those experts, and I’m still struggling to deal with it. For the upgrade of safety standards, experts were brought in for an assessment; they said that all electrical equipment in our circulating fluidized bed boiler’s coal feeding system must be explosion-proof. The factory’s environmental and safety department only imposes deadlines for rectification, pressing hard for it. The Equipment Department spent nearly a million to convert the motors and lighting to explosion-proof versions, and the workshop also purchased copper shovels. The inspection team arrived; seeing that it was a coal-fired boiler, they only checked the diesel tank and didn’t even look at the coal feeding system at all. Some time ago, that expert came back and said that the motor is designed to prevent gas explosions, but not dust explosions, so it does not meet the requirements. The safety inspectors from the parent company also requested that the lighting in the coal shed be changed to explosion-proof type as well. I really can’t afford the hassle. I thought that there must be an explosion limit for dust explosions; after all, the ring hammer coal crushers produce a lot of flames, and if there had been any problem, it would have happened already. Cases of boiler dust explosions have all occurred in coal-fired boilers, particularly in the coal grinding system. It’s different from our process. I asked the Safety and Environment Department for the standards, but they sent me the standards for the powder production system, which were completely irrelevant. Haichuan, Standard Network, and the WX official account – I downloaded a ton of standards, videos, and tweets. Finally, it was found in GB50058 that the explosion limit for bituminous coal dust is 41–57 g/m3. A concentration such that a 25W bulb cannot penetrate it from a distance of two meters. Upon checking the records of dust sampling tests during coal loading, even in the oldest areas the level was less than 50 mg, which is not in the same order of magnitude at all. Even when experts ask us to make corrections again, we’re afraid we might lose control and snap at them; the people from the Safety and Environment Department are just as annoying. What’s interesting is that in the safety section of HaiChuan, there are also specialists in safety who directly replied saying that, according to the standards, the coal handling system needs to be explosion-proof.

Yes, now one expert says: ‘(

Logically, gas systems are required to meet higher explosion protection standards; if I’m using gas, how can it not also provide protection against dust? I’ve seen absurd experts classify natural gas boiler rooms as category 2 explosion hazard areas

GB50493: The lower value of toxicity and flammability is adopted as the setting

According to the coal chemical industry standards, coal storage areas and crushing rooms are classified as Zone 2 for explosions; therefore, motors that are dust-proof are required； In underground coal transport corridors, motors that are dust-proof are required

Experts say that when the boiler is shut down, if natural gas leaks, it constitutes Zone 2 for explosions; I’m not sure how to respond to this