Sunday, October 17, 2010

[MW:7600] Re: Purge Gas

Dear Mr. Hardcastle,

Purge gas should be present in the pipe as long as the temperature of
the material at the inside is in the range where oxidation can
happens. So depending on the material thickness this can be till cap
is welded or after a few layers.

Best Regards,

Herman Pieper

On 16 okt, 07:14, "John Hardcastle" <jhardcas...@euromechanical.com>
wrote:
> When can we remove backing gas purge from non-ferrous pipe joints.
> Can we remove the gas purge once the root run is complete, or once the
> root and first hot pass is complete.
> We leave the gas purge on until the joint is capped and i am sure this is
> wasting gas.
>
> John Hardcastle
>
> Fabrication Manager
>
> Euro Mechanical Contractors Company Factory
> P.O. Box 46153
> Abu Dhabi
> United Arab Emirates
>
> Phone: +971 2 550 08 99
> Fax: +971 2 5501898
> Mobile: +971 50 4445873
>
> Email: jhardcas...@euromechanical.comwww.euromechanical.com
>
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No comments:

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