Analysis Method for Hot Work during Maintenance of Methanol Washing System
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Everyone: Welding work is required on the methanol washing system. How should the entire system be handled to ensure that the welding work is carried out safely?
There must be many experts in this field on the forum; I hope they can offer a lot of help
Water should be added multiple times for displacement, followed by ventilation or forced ventilation for displacement. As a precaution, blind flanges should be used as much as possible to isolate the area where welding takes place, in order to prevent any areas from remaining undisplaced.
The temperatures here are extremely low in winter; even after washing and drying with nitrogen, dead corners remain, and there is a risk of the equipment being damaged by freezing!
Experts in chemical manufacturing in the north during winter, please share your experience!
Don’t worry too much; just open all the outlets where discharge is possible – there will be no problem
Boldness must be paired with caution! I don’t have any experience in this area, so I’m a bit hesitant.
When it comes to maintenance safety, don’t be afraid of going through the hassle; if something isn’t clear or understandable, use simple methods such as installing blind flanges everywhere. And keep proper records of the installation and removal of blind plates.
It’s not a problem if there’s water in certain areas; some spots aren’t suitable for ventilation. For safety reasons, use blind flanges, wash with water, or apply nitrogen protection. If that doesn’t work, it’s also possible to remove the component and work on it in a dry environment. In any case, don’t try to cut corners
Pipes and valves get damaged due to expansion when water freezes; having half a pipe filled with water poses no problem