Corrosion protection for oxygen pipelines

Of course it can be polished; there’s no danger. The air also contains a large amount of oxygen. The 2nd floor is misleading others.

Reply to beileim1: Recent rating record for this post. Rater: beileim1. Wealth +1. It’s you who is misleading; is the oxygen in the air pure oxygen? Date: 2009-3-10 11:15 The oxygen in the air is certainly not pure oxygen; oxygen is merely a combustion aid that does not burn on its own. You had better learn *it first before coming out to give your opinions. By the way, please share your comments in the form of a reply. Everyone comes here to learn*.

Indeed, oxygen pipelines in operation cannot be polished; for high-pressure oxygen pipelines, the effects of flow rate and pressure must be taken into account. It is best to use stainless steel pipes for oxygen delivery, and the anti-corrosion paint used on carbon steel pipes should also be compatible with oxygen.

This question is quite interesting, hehe; keeping an eye on it. It seems we have to look for the answer in the requirements regarding preservation.

The owner’s question can be imagined as performing welding work on an oxygen pipeline; so what is the difference between this and performing welding work on ordinary pipelines carrying flammable materials? Is it simply because it is an oxygen pipeline that welding is not allowed? It should be possible to start the fire. Oxygen pipelines are mostly made of stainless steel, and its corrosion-resistant properties go without saying. I’ve never seen oxygen pipelines that require anti-corrosion treatment; so what’s the need for polishing? What circumstances have led the original poster to feel the need for anti-corrosion protection? Could the poster explain? It could also serve as experience for the future. I’m new to this field and lack experience; I’m looking forward to hearing from experts~~~ If there are any mistakes, please point them out. This post was last edited by aadaniel on 2009-3-11 at 21:54.]

:victory: “Pipelines are classified into high-pressure, medium-pressure, and low-pressure categories according to the design pressure.” Pipelines with a design pressure greater than 8 MPa are considered high-pressure pipelines ； Pipelines with a design pressure greater than 1.6 MPa and less than or equal to 8 MPa are classified as medium-pressure pipelines ； Pipelines with a design pressure of 1.6 MPa or less are considered low-pressure pipelines\":victory: I think medium-pressure pipelines can be polished, as long as the flammable materials around them are removed. In an environment without combustible materials, it cannot be ignited even when exposed to oxygen.

There are many posts on the forum regarding oxygen stations and air separation units; you’ll understand why online grinding isn’t possible once you take a look； http://bbs.hcbbs.com/viewthread.php?tid=41145&highlight=%D1%F5%C6%F8%D5%BE http://bbs.hcbbs.com/viewthread.php?tid=216916&highlight=%D1%F5%C6%F8%D5%BE

I’m not sure if you’ve worked in a factory before, but the pipes are made of stainless steel; however, just because they’re stainless steel doesn’t mean that anti-corrosion measures aren’t necessary. Over time, the anti-corrosion coating on stainless steel noodles will also wear off; it’s just a matter of time.

Actually, the main issue for me isn’t whether it can be polished or not; as long as nothing is leaked, there’s no problem with polishing it. If there is a leak, it will mainly occur at the welds and flange joints; taking protective measures at these points should resolve the issue. What I would like to know is whether there are clear regulations regarding grinding or welding on oxygen pipelines.

What was said upstairs is that as long as nothing leaks it’s fine, but that’s a complete lack of safety awareness – it’s nothing but gambling. Can you guarantee that nothing will leak before the grinding process starts? What about during the grinding process? Could there be leaks in other pipes in the vicinity? There can be no room for luck in any operations at a chemical plant. Those upstairs should know that smoking and open flames are strictly prohibited in the oil depot, and mobile phones aren’t allowed either. According to you, as long as nothing is leaked, it’s fine for me to light a cigarette, right? ； This question shouldn’t be asked here; it should be asked in the safety area. Don’t you have any safety officers in your factory?

2.5MPa should require stainless steel pipes; I think there shouldn’t be any problems if they are polished... but carbon steel pipes definitely won’t work.

Your connection didn’t explain to me the topic of this post; without a hydrocarbon medium present, oxygen cannot burn on its own. After removing the surrounding flammable materials, grinding can be carried out even in the presence of a slight oxygen leak. I haven’t figured it out myself yet, and here I am giving orders to others. So what if you’re the real moderator! Disdain!