Issues with cleaning pipelines larger than DN500
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The company has a newly installed facility, which contains several pipelines with diameters larger than DN500. The operating procedures as well as previous startup plans specify that pipelines with diameters greater than DN500 must be cleaned manually. So, what exactly is the method used for this manual cleaning? It’s still very restrictive to have 500 people enter through DN500! Please give your expert guidance!
It’s very restricted; cleaning inside is extremely difficult. When entering, one also has to consider the safety aspects of working in confined spaces. If there are not many impurities, it is recommended to use compressed air for purging.
That was in the past; now it’s all high-pressure water guns
Do you mean without welding pretreatment?