Matters related to hot work analysis for the maintenance of low-temperature methanol washing systems
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Dear colleagues: Our company is planning to perform a complete nitrogen purging of the low-temperature methanol washing system, and after the purging is completed, a hot work analysis will be carried out. I would like to ask what method is used for analysis after replacing with nitrogen, and what value indicates that the replacement is successful?
Take the gas and conduct an analysis of its flammable gas content; it is only considered qualified if it is outside the explosive limit
Could you introduce what analysis methods are used?
Oh my god, don’t you all have any plans or anything? What do technicians do? In the chemical industry, safety comes first; it’s never too careful to be! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! The displacement must be thorough; check each section of the pipeline to ensure it has been displaced. Before performing any hot work, first determine the level of risk associated with it, check whether the equipment used is properly isolated, and decide whether an environmental analysis or an analysis inside the tower or tank is necessary; have the safety department present to sign off on the analysis. Sampling is generally done from analysis points or drain lines; it is necessary to ensure adequate purging to prevent stagnant air from affecting the analysis results. A flammability meter can be used to determine the concentration of combustible gases, or a comprehensive analysis can be conducted.
We are now using nitrogen for displacement. Does analyzing flammable gases with a gas detector refer to the methanol vapor content?