Can hot oil pipelines be worked on with open flames? Can hot oil catch fire?
Thread Content
As the title suggests, I have a question. . . . . . . . . . .
First, look at your organization’s rules; don’t assume you need to change them. Following the rules is a good habit
Flaming is allowed, but safety measures must be taken; either use heating oil to fill the pipes (in a solid form) before proceeding with flaming, or carry out the operation by displacement, steam treatment, or under nitrogen protection.
It will catch fire, but work on it directly! Using nitrogen will give better results!
Do not work under pressure; it’s fine to use welding with oil in a static-pressure environment, but oil splashing is a problem
It is not recommended to perform welding in the presence of oil, as the oil should not leak out in the first place； There isn’t much of a problem with performing hot work itself. But it becomes very dangerous when there is a leak
This is how we do it； 1. Oil-based welding is the preferred method (excluding welding, patching, and cutting), but two conditions must be met: a) the pipe must be filled with oil (with no air present), and b) the oil temperature must be reduced to 90 degrees. 2. Drain the oil before performing hot work (suitable for cutting and welding repairs); after all residual oil has been removed, fill the area with nitrogen. Once explosion testing shows satisfactory results, keep nitrogen flowing to maintain a slight positive pressure, and carry out cutting and welding repairs intermittently.
This is how we do it； 1. Oil-based welding is the preferred method (excluding welding, patching, and cutting), but two conditions must be met: a) the pipe must be filled with oil (with no air present), and b) the oil temperature must be reduced to 90 degrees. 2. Drain the oil before performing hot work (suitable for cutting and welding repairs); after all residual oil has been removed, fill the area with nitrogen. Once explosion testing shows satisfactory results, keep nitrogen flowing to maintain a slight positive pressure, and carry out cutting and welding repairs intermittently.
Learn it* – removing oil is very troublesome.