Inyection points 1

[Makun]

Hi, I was wondering if ASME gives some suggestion about location of inyection point in piping systems??? is a good practice choose an elbow as a location??


thanks

 

[TGS4]

Unless, somehow, the specific location of an injection point had an impact on the pressure integrity of the piping, ASME has no opinion about about such details. This is a process issue, and not the purvue of the design Codes.

If your injection fluid is of a significantly different temperature than the fluid into which it is being injected, then there may be concerns for high-cycle thermal fatigue. However, the piping Codes only tell you THAT you have to consider it, not HOW to consider it.

 

[SJones]

ASME doesn't, but NACE does in Publication 34101 Refinery Injection & Process Mixing Points

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[Makun]

Thanks Steve and TGS4

 

[Duwe6]

Also look at API-570. It has a lot of requirements for on-stream monitoring of injection points. You can infer the necessary requirements from that.

I agree, ASME B31.1 & B31.3 are silent on injection.