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rpm8 (Mechanical) (OP)
10 Jun 02 11:02
Hi,

I am working on a Piping Specification which is for Fire water and Foam Concentrate. For use on Offshore Installations only.
Which would be the suitable ASME B31 code to be used?

I guess its ASME B31.3 but, I would like to have your expert advise on this.
What would be the best way to select the code on various other Service's?

Also,the Piping Specification says Wall thickness/Class as per ASME B16.9 for Pipe fittings. Yes,I agree ASME B16.9 provides fittings rated the same as matching straight seamless pipe as per B31 code. But,how do I calculate the Wall thickness without the Class? How do I go about this?

I am working on Piping Specifications for the first time, so you may feel the questions are silly. Please advise me on this.
Also, if you could advise me of any good book(s) for reference on Piping from basics and various standards it would be of great help to me.

Thanks & Regards,
Rpm
Hush (Mechanical)
10 Jun 02 11:14
This is out of my field so I'm guessing but wouldn't the specification requirements would be detailed by ABS or DnV?
Guest (visitor)
10 Jun 02 16:44
Hi RPM,

There is no substitue for reading the Code.

All the B31 series of Codes have a scope statement.  These will tell you what the Committee intends to include in the scope and what they intend to explicitly exclude.  

For your specific application you will also want to look at the NFPA Standards AND especially the Coast Guard Regulations regarding fire suppression. BUT you really, really REALLY need to look at SOLAS.  International Maritime Organization, International Convention for the Safety of Life at Sea, Chapter II-2, Construction, Fire Protection, Fire Detection and Fire Extinction.

For calculating required wall thicknesses for internal and external pressure see B31.3, paragraph 304.  For books, find out about Chuck Becht's new book at http://www.asme.org/pubs/

find out about Glynn Woods' B31.3 book at http://www.casti-publishing.com/

Regards, John.

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