Leakage in the pipeline below the high flash angle valve of the space furnace
Thread Content
There is a leak in the pipeline of the high-flash black water angle valve; online welding can be used for repair. The manual valves at both ends should be closed, and the drain lines should be blocked. Is it possible to carry out welding repairs? What is the level of risk involved? I’m asking all of you for advice.
Is it the angle valve for entering the high-pressure flash vessel? Aren’t there two manual valves ahead? They are used to check after shutdown whether the pressure in the high-pressure flash tank can be fully released. If it can be released, it proves that the valves are leak-free; in that case, a small amount of nitrogen can be introduced (make sure it doesn’t spread around randomly) to maintain a slight positive pressure, thereby allowing the risks to be under control
The abrasion of the high-flash black water angle valves in the gasification furnace, as well as the pipelines, has been a problem for many years... It’s a very troublesome issue; there are numerous risks associated with this process, which require careful handling!