B31.3 pipework
B31.3 pipework
(OP)
Why can you not easily change a design of liquid and gas pipework from having welded butts to have a section of pipe flanged to allow for the maintenance of other components?
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RE: B31.3 pipework
If it comes in late, it potentially impacts the P&ID (some clients show these flanges, others don't), 3D model updated, the isometrics have to be redone, stress might want to look at it depending on the size, material and temperature. Bill of materials will have to be updated and POs updated depending how materials are being handled.
RE: B31.3 pipework
As far as I know there is no restriction in ASME B31.3 against having Flanged construction mixed with Butt Weld construction.
Can you give more detail about your situation and what you are trying to do along with what you may have been told that you cannot do.
prognosis: Lead or Lag
RE: B31.3 pipework
RE: B31.3 pipework
But people say its not possible... Would it matter if the line had nitrogen in it etc?
RE: B31.3 pipework
RE: B31.3 pipework
Those people who say it is not possible...... don't take advice from them anymore.
I agree with pennpiper ad TD2K...
I have been involved in industrial piping design and analysis for 30+ years and have never heard such a thing...
RE: B31.3 pipework
Probably the guy who is telling you it is not possible was the original designer and does not want to look stupid if he originally insisted that the line had to be fully welded!!!!