Re: Vendor for Safety Related Piping

On Oct 28, 2005, at 1:46 PM, Jim Hubbard wrote:

> The client wants B31.1. I
> agree I could use Section III, been there tried that. They want B31.1
> and I
> am looking for a vendor that can supply.
B31.1 uses standard ASME material specs. The material selection for the entire ASME Code (all sections and divisions including piping) is pretty much what I outlined. All the QA provisions are noted on the specs, except for paperwork requirements which are spelled out in each vessel supplier's QA manual. The material specs for, say, Section III are taken from Section II just like the material specs for power boilers or unfired vessels. There are materials which aren't permitted for the same temperature range in every section, but there's nothing special about B31.1 materials. Or materials for Section III for that matter. The actual allowables may be different, but even that depends on the design methodology.

Is it possible that your client means he wants only materials covered by Section II specifications (like SA-312) and not the corresponding ASTM specifications which would be designated A-312? ASME specs sometimes exclude materials otherwise included in the ASTM version. The 'bells and whistles' are all found in the Supplementary Requirements or are special requirements negotiated between the manufacturer and the supplier on a case-by-case basis. What particular 'bells and whistles' are you looking for.
Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania