Which media pipeline cannot be purged with steam?
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There was an accident recently due to the use of steam to purge a certain pipeline, which resulted in explosions and casualties. My friends, what media pipelines cannot be purged with steam?
According to the "Code for Construction and Acceptance of Industrial Metal Pipe Engineering" and its provisions, during steam purging, no flammable materials shall be placed on or near the pipeline. That is to say, if there are flammable substances on the pipelines, they cannot be cleaned and must be dealt with before cleaning. Non-thermal piping. The expansion factor is not considered in the design, so steam purging is not allowed.
Material pipelines that can react with water cannot be purged with steam.
Non-pressure pipelines and non-thermal pipelines cannot be purged with steam. Also, in pipelines transporting concentrated sulfuric acid, if there is residual concentrated sulfuric acid, it will cause a violent exothermic reaction when it comes into contact with water. Waiting to be added
The pressure of the pipeline is indeed a key point to consider~~ Theoretically speaking, no one will ignore materials that can react with water - purge them with steam.
Some oil pipelines are not allowed to be purged with steam.