3T is very much less than 1D - specially if were talking about large
bore piping. I do agree that the key thing to do is to avoid
overlapping of the HAZ.
Im not sure about the AWS - if it specifically mentioned one NPS as
a requirement. Care to mention the specific AWS?
- In PipingDesign@yahoogroups.com, shivakumar angadi
<shivku_2000@...> wrote:
>
> Yes, as you rightly said One NPS is the normal
> pracitice. If your pipe size is large, you can go for
> smaller spool piece. However, under extreme
> conditions, the lenght of spool piece shall be more
> than 3T in order to avoid the overlap of HAZs of
> adjacent weld joints.
>
> Hope this give you an additional idea for desiding
> minimum length of spool piece.
>
> Thanks
>
> Shivakumar Angadi
> Design Engineer
> Joint Operations - Kuwait Gulf Oil Company & Chevron
> Texaco
> --- dd jdh <saduemk@...> wrote:
>
> > hi all,
> >
> > May anyone tell what will be the minimum possible
> > pipe spool length
> > for a butt welded end connection.
> >
> > As per AWS the minimum pipe spool length required
> > in a line is one
> > NPS.
> >
> > where site condition restricts this minimum
> > requirement, is it
> > possible to adopt
> >
> > lesser length spools.
> >
> > thanks and regards,
> >
> > Sadanandan.M.K
> >
> > PE middle east
> >
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>
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Received on Sat Feb 02 06:04:00 2008