I would like to ask everyone: must galvanized water gas pipes be used for the conduit for instrument control cables in explosion-proof areas?
Thread Content
I would like to ask everyone: must galvanized water gas pipes be used for the conduit for instrument control cables in explosion-proof areas?
There’s no need for \"galvanized water gas pipes\"; what kind of pipe do you want to use?
Do you have many options? Use explosion-proof flexible tubing when the instrument is located close to the junction box.
I’ve always used galvanized water gas pipes :); I just saw someone using galvanized steel pipes
Hello, the poster. In our equipment area (where hydrogen is used), an intrinsically safe instrument system is employed, and galvanized steel pipes are used as protective conduits for the cables – this is mainly to save money, as stainless steel is expensive.
Not necessarily. For the new devices we install, 50-slot boxes are used to connect directly to the meters. As for explosion protection, it depends on whether the meter requires flameproofing or intrinsically safe design; in the case of intrinsically safe meters, intrinsically safe cables are also necessary
It’s not necessary; as long as the cable has an explosion-proof certification, installing it in ducts or cable trays is merely a matter of protection or shielding requirements, and it has nothing to do with explosion prevention.
Got it, thank you all! :)
Galvanized water gas pipes serve as an outer protective layer for cables; in such cases, ordinary cables are generally used inside these pipes. If explosion-proof cables are used, the use of conduit is not mandatory. In foreign engineering designs, cable trays combined with explosion-proof cables are widely employed. The reason for using the former is mainly to save money.