Piping Material Take-off 1

[NewPiping]

I just started to do piping material take-off. I would like to know
1) What are the items to be included in piping measurement?
2) How do i determine the schedule of the weld connection of a outlet (eg. sockolet or threadolet 3000#/6000#) on a pipe?
3) How does a nipple SCH 80S 316/316L be connected to SW flange 300# RF 40S 316/316L SS 40S bore be possible?

 

[dtn6770]

Material take-offs or bills of material (BOM) should provide a complete accounting of everything required to fabricate and assemble a piping system. Every foot of pipe, elbow, flange, valve, gasket, bolt and nut should be listed. Think of it as a procurement "shopping list" in addition to serving as a guide for fabrication and assembly.

Your design should be guided by some industry specific code or standard such as ASME B31.3 or ASME B31.3. I don't know is used in marine/ocean fields. The applicable code should have criteria on determining how thick your piping components should be.

As long as the nipple is plan end (not threaded) and is the same NPS (nominal pipe size) as the socket weld flange you should be okay despite the schedule differences. Though, I'm not familiar with SW flanges having a schedule; weld neck flanges yes but not SW since they slip over the pipe OD.

 

[NozzleTwister]

NewPiping,

My experience has been that a Piping Engineer will develop Piping Material and Valve Specifications including Branch Connection Tables for each service in each pressure class used on the project. These specifications are usually designated by a numbering system in accordance with the client’s or EPC firm’s procedures.

Each Line Number or Isometric is assigned a specific Piping Specification for its service and pressure class. All of the information that you are asking is or should be outlined in each specification. If not, check all notes and the general piping specifications issued for the project, you may find that info there.

If you still aren't finding what you need, get with the engineering responsible for the piping specifications. This information should be clear-cut and straight forward with no guess work.

Good luck,


NozzleTwister
Houston, Texas

 

[BigInch]

Absolutely! Leave the guess work for the engineers!

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[NewPiping]

Hi all,
Thanks for the guidance.

 

[LSThill]

TECHNICAL NOTE: I aggree with NozzleTwister (Mechanical) and go to

http://www.red-bag.com/

for Pipe Class Component (PCC) software or recview User Manual for Pipe Class Component (PCC) calculation software
Version 2.0