Offshore pipeline: Bends 1

[robb4]

Dear all,

I'm writing a SoW for a FEED Design of a pipeline system and I'm listing the standards to be used for design.

My question is about 5D induction bends:
Is there any standard that covers this item (for example in terms of desing, material, construction and testing)?

In particular I'm interested in bends made by CLAD / lined and CRA.

Thak you

 

[BigInch]

You can buy 5D as a "standard" ell radius.



**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[SJones]

ISO 15590-1 or ASME B16.49 (cherry picking from each would make a superb specification!)

You won't line a 5D bend with CRA. You will start with either mill clad or shop weld overlaid mother pipe. The bend will have to be heat treated after bending which could affect the CRA layer; so, include an appropriate corrosion test as part of the bending procedure qualification.

Steve Jones
Materials & Corrosion Engineer

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

 

[rneill]

You might want to look at ASME B16.49 which is a relatively new standard on Induction Bends. it won't help you on the clad issue but check it out anyway.