Water and gas content in machining enterprises

Use as gas? What the poster means is the CO content in the working environment after water gas or semi-water gas leaks, right? The following content is excerpted from the "Gas Safety Regulations for Industrial Enterprises" =N420031986002 =1986/04/09 (I don't know if there are any changes in the new version) 1.10 The carbon monoxide concentration in gas hazardous areas (such as basements, pressurizing stations, trenches, hot blast furnaces and various gas generating facilities) must be measured regularly, and carbon monoxide monitoring devices should be installed at key locations. The maximum allowable concentration of carbon monoxide in the working environment is 30 mg/cubic meter. Even if CO exceeds the standard, as long as it is not a problem with the main gas preparation equipment, the furnace does not necessarily need to be shut down. After the furnace is hot and ready, the pressurizer is stopped, the pipe network is reliably sealed and replaced, and the fire permit is obtained, you can deal with the leakage. ——Guess the answer.