How to configure combustible gas monitoring according to the size and layout of the monitoring area?
Publish Time: 2025-02-27
In environments such as industrial production, storage and transportation, and chemical laboratories, combustible gas leaks may cause serious safety accidents. In order to ensure the safety of personnel and the integrity of facilities, it is crucial to configure combustible gas monitoring reasonably. The size and layout of the monitoring area are key factors affecting the configuration of monitors.First, the size of the monitoring area directly determines the number of monitors required. Generally speaking, larger monitoring areas require more monitors to ensure full coverage. When determining the number, the number and distribution of potential leakage sources in the monitoring area and the diffusion characteristics of the leaking gas should also be considered. For example, in the fire dikes of liquefied hydrocarbons, Class A B, and Class B A liquid storage and transportation tanks, additional monitors should be installed to deal with possible high-concentration combustible gas leaks.Secondly, the layout of the monitoring area affects the installation location and type selection of the monitor. In the equipment area arranged in the open air or semi-open air, the monitor should be set on the upwind and downwind sides of the minimum frequency wind direction of the release source, and the distance from the release source should be adjusted according to the wind direction and wind speed. Generally, the monitor on the upwind side can be slightly farther away, while the monitor on the downwind side should be closer to the release source to ensure timely detection. In a closed or partially poorly ventilated semi-open plant, since gas is easy to accumulate, the monitors should be arranged more densely, and special attention should be paid to setting up monitors at the highest point in the plant to capture combustible gases that may accumulate.In addition, the type of monitor should also be selected according to the specific conditions of the monitoring area. Catalytic combustion detectors are suitable for detecting hydrocarbon gases such as methane and propane, while electrochemical detectors are more suitable for detecting non-hydrocarbon gases such as hydrogen and carbon monoxide. When selecting, factors such as the accuracy, response time, explosion-proof level, and working environment conditions of the monitor should also be considered.Finally, when configuring combustible gas monitoring, the linkage with the alarm system should also be considered. When the monitor detects that the concentration of combustible gas exceeds the standard, the alarm system should respond immediately, send out an audible and visual alarm signal, and start the corresponding emergency handling procedure. At the same time, the monitoring data should be uploaded to the central monitoring room in real time so that management personnel can grasp the safety status of the monitoring area at any time.In summary, the rational configuration of combustible gas monitoring according to the size and layout of the monitoring area is a key step to ensure safety. Through scientific planning, careful selection and reasonable layout of monitors, the occurrence of combustible gas leakage accidents can be effectively prevented and the safety of personnel and facilities can be guaranteed.
