If a certain gas is both toxic and flammable, is it necessary to install both toxic gas and flammable gas detectors?
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This post was last edited by jintchinssen on 2011-4-20 at 13:15. According to GB50493-2009, when the same gas is both flammable and toxic, only a toxic gas detector should be installed. If a certain gas is both toxic and flammable, is it necessary to install both toxic gas and flammable gas detectors?
It is only necessary to install toxic gas detection probes
It’s not necessary. Look at which one, toxicity or flammability, has the lower lower limit value
Support one, haha, learn*learn*
The detection radius of toxic gases is small; generally, a toxic gas detector is sufficient
Just purchase an “XXX” gas detector; it is used to detect whether there is a leak of that particular gas, and it has nothing to do with whether the gas is toxic or flammable.
According to the \"Design Code for Detection and Alarm of Flammable and Toxic Gases in Petrochemical Enterprises\" (GB50493-2009), only toxic gas alarms are required; this is clearly stated in the code
This post was last edited by zpg on 2011-4-8 at 22:46. Points 1, 2, and 4 in the guidelines cannot be ignored; one should not focus only on point 3. In cases where there are flammable gases or gases containing toxic substances, if a leak occurs, the concentration of flammable gases may reach 25% of the LEL level, but when the concentration of toxic gases does not reach the maximum allowable level, flammable gas detection alarms should be installed； 2 When toxic gases or gases containing flammable gases are present, and in the event of a leak the concentration of toxic gases may reach the maximum allowable level, but the concentration of flammable gases cannot reach 25% LEL, a toxic gas detection alarm should be installed ； 3 Being both a flammable gas and a toxic gas, only a toxic gas detection alarm is installed ； 4 In areas where flammable gases and toxic gases are present simultaneously, detectors and alarms for both flammable gases and toxic gases should be installed. In certain special situations, such as the area around burners that use gas, both combustible gas and toxic gas detection alarms should be installed; at the very least, a toxic gas detection alarm is necessary. This depends on the specific types and concentrations of toxic and combustible gases, as well as the environment in which they are used. During the fire safety design review, the location is crucial; don’t focus only on the type of gas. .
For industrial applications, it’s not enough to focus only on standards; the solutions must not only meet those standards but also fulfill the actual requirements of the project. It is recommended to install such systems everywhere, while also identifying the key areas, such as gas accumulation zones