Settings issues for combustible and toxic gas alarms in compressors
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There is a compressor in use, and it is necessary to install detectors for flammable and toxic gases in the factory area. The main components of the process gases are hydrogen at 73%, methane at 8.4%, and CO at 4%; the remaining components are nitrogen and CO2. I am not very familiar with GB50493 standards. I would like to ask the experts how this should be set up Is it necessary to install both for toxic and flammable substances, or only for flammable ones?
Unless evidence can be found showing that toxicity is not necessary, toxicity must be included. Because there are some laypeople involved in the security checks, and to make those laypeople feel secure, more effort needs to be invested
Both flammable and toxic substances require such installations; flammable substances include hydrogen and methane, while toxic substances include carbon monoxide
Both flammability and toxicity hazards must be addressed to meet compliance requirements.
Both flammability and toxicity hazards must be addressed to meet compliance requirements.
First, you need to determine whether the concentrations of various components in the mixed gas remain essentially constant and do not experience significant fluctuations. If there is a possibility of changes in these concentrations, measures must be put in place for both flammable and toxic substances. If the concentration remains roughly constant, you need to calculate whether, in the event of a leak of the mixed gas and when the concentration of toxic gases reaches the maximum permissible level, the concentration of flammable gases will reach 25% of their lower explosive limit. If it does, then it is sufficient to install an alarm for flammable gases ； If this cannot be achieved, then it is only necessary to install toxic gas alarms.