Safe Distance Between Gas Pipelines

• What gas(es) - re-entry plasma, methane, oxygen, xenon, compressed air?
• Why are there two pipelines when one would do?
• Where is the Process Engineer's design in all this?
• Has the design been through a HazOp study?
• Pressures?
• Temperatures?
• Flowrates?
• Sizes?
• Materials of construction?
• Method of joining?
• Insulation requirements?
• Insolation?
• Etc.

If they are too close together then it may be simply impossible to assemble and disassemble them.

So do help the forum to provide concise answers by providing all the information it needs to gain an accurate insight into the problem.

It will be dependent on how you define the safety. What criteria do you have to include in your assessment? Accidental or arbitrary damage? Process safety? Local access options to attend to damaged pipes? Pipe laying constrains?

I believe that only you can answer that question.

These are natural gas pipelines for Fertilizer plant. I think you all know about the process of manufacturing Fertilizer. That is not important. We have two existing natural gas pipelines of sizes 16 inches and 20 inches. Now we are laying another pipeline of size 24 inches in the same right of way. Design temperature is 80 deg. C and pressure is 53 kg/cm2g. Now I need to know the horizontal inter distance as per code. And I m Section Project Engineering (by the way).

• Laying a single 36in main and removing the undersized ones will obviate the problem.

How close are the undersized ones?

Please explain how the forum is able to come to the rescue, free of charge, of this project when so many questions remain unanswered?

A 26-inch pipe would more than suffice, if that strategy is adopted.

I'm a policeman. Why do you think that all of me knows about fertiliser plants?

Absolute nonsense.

Make it the same!

The piping or process engineer would know.

Horizontal distance?

Vertical distance?

Parallel?

Perpendicular?

Above ground?

Buried?

There is soooooo much you haven't told the forum.

Are you the ditch digger or the hanger?

Minimum 500mm...

http://www.pngrb.gov.in/OurRegulation/CGD-Network-GSR612.html

OK thanks But I need same reference from ASME or API code. I agree with your comment of 500 mm but what does the code says?

The appropriate codes are your responsibility!

As "Section Project Engineering" it IS YOUR JOB to have the appropriate codes to hand at all times!

You are a disgrace to your "profession".

Do they not have a professional code of ethics where you are?

Buy the codes yourself!

Apparently, "maza aya" is some kind of Muslim insult.

If you must resort to childish insults, please translate them into a language that the person you are trying to insult will understand.

I think it means 'in fun' in Hindi....

खुश Cinco डे मेयो

Paella!

https://www.blueapron.com/recipes/paella-style-rice-with-shrimp

http://icuban.com/food/paella_cubana.html

Tu Farid Admi Hy

http://www.slideshare.net/mungduongxuan/asme-b318-2012-gas-transmission-and-distribution-piping-systems-39034739

Thanks guru

The flow capacity of a pipe is proportional to diameter D^2.5; for a bunch of pipes, add up their D^2.5, and then take the 0.4 power of the sum to get the D of a single-pipe equivalent.

For a 16- and a 20-inch pipe, a 24-inch single pipe will just barely exceed that.

For a 16-, 20-, and 24-inch pipe, a single 32-inch pipe would suffice. (Or use the next standard size up.)

B31.8 sounds good, then. A copy is not available here. One could always check the reasoning behind the standard with the authors; there is a theory that one can reach anyone on the planet by making only 6 telephone calls to locate that individual.

The closer they are, the easier they are to take out with a single, precision ordinance.

An ordinance is a municipal law; military materiel is ordnance.

CP 51:2004