-
what is the original line thickness?
if the line thickness is same as one what you have the 30 mm tee
if the tee in case you can go for machining to reduce the thickness
as required in line original thickness.
also make sure the design thickness shoud not be less than that
machined one.
regards
- In PipingDesign@yahoogroups.com, "Sajit Viswan" <sxviswan@...>
wrote:
>
> It may not be possible to have PWHT on a hot tap fitting welded on
to a live
> line. It will be a case where the WPS have to include the
parameters to
> arrive at a compromise weldment that will have a close enough
result that
> which is achievable otherwise through the PWHT.
>
>
>
> In a similar case of hot tap welding on to a sour service gas
pipeline,
> Gasunie, a dutch hot tap specialist welding services company was
asked
> whether the welding procedure will be able to achieve the weld
hardness
> required by NACE. The answer was no.
>
>
>
> Sajit
>
>
>
> _____
>
> From: <a href="/group/PipingDesign/post?postID=snawgx352IZ5B95PW2BcP2FcYtDDa5nMAVtKPOsOoOMy0MdoiZLma7RRDVDOcbJRHFgoS_XYMRLxoPOv-8_Ghc4M">PipingDesign@yahoogroups.com</a>
[mailto:PipingDesign@yahoogroups.com] On
> Behalf Of dd jdh
> Sent: Saturday, January 27, 2007 11:57 AM
> To: pipe
> Subject: [PipingDesign] PWHT on a live Fuel Gas Line
>
>
>
> hi every one,
>
> I have a 42" Split Tee Hot Tapping connection on a 550 psig design
pressure
> 200 deg F design temp. petroleum fuel gas line.But the split Tee
provided is
> of 30mm.Ofcourse should go for PWHT.
>
> Is this feasible on a live fuel gas line or whether there will be
any other
> alternative.
>
> Thanks in advance,
>
> regards,
>
> Sadanandan.M.K
> PE,
> Middle East
>
>
> ---------------------------------
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>
> [Non-text portions of this message have been removed]
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
Received on Mon Jan 29 02:56:00 2007