Spool design and fabrication per B31.8

[smart143]

I have one open enquiry where in a spool design and fabrication is required as per ASME B31.8
Customer piping class has flange MOC as A694 F65 for forging and size is 36"x 1500#.This size & rating is out of scope of B16.5....so we r using sec VIII Div I code to design these special flange.
However when cheked....i noticed that A694 F65 material is not coverd in sec II part D for allowable stress value selection....now how to move forward in this situation...PED 2014/68/EU certification is also required for this spool piece.is WPS qualification per sec IX is okay for B31.8 code.

 

[BigInch]

B16.5 does not cover large diameters. As it is a pipeline, use MSS SP44 Specification for (large diameter) Steel PIPELINE Flanges, in your case it will be Grade Y65.

 

[LittleInch]

BI, I think you missed the bit about #1500 (!!) SP 44 only covers up to #900.

Your other bit I'm afrain I don't know



Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[BigInch]

At least the material won't be the problem.

 

[XL83NL]

Speaking B31.8 and pipeline, PED 2014/68/EU may very likely not be applicable. Refer to the guidelines.
Not sure which one, but there's one covering the topic on pipelines corssing different properties/land areas.

 

[KevinNZ]

This post may help

http://www.eng-tips.com/viewthread.cfm?qid=253540