welding activity pipeline

[dorh]

Hello ;

We work for welding activity pipeline 12”         X52       thickness 8.38 mm

Root / hot pass      GTAW

Filling / cap            SMAW

In order to optimize production Contractor propose to proceed with GTAW  first ,   for example for he weld  first 10 weld joint GTAW  after that he come back tomorrow  with and filling and cap  weld joint with SMAW.

 

It’s some issue for that    ?

[udaya bhaskar]

Hi,

There is no issue here, Root & Hot passes are essential variables at piping.

You can do.

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With Regards

Udaya bahaskar.D

+919676270121

[Kannayeram Gnanapandithan]

check api 1104, time laps are important if you have specified in WPS

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

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[Nadakuditi kiran kumar]

Dear Sir, Check your WPS whether it is single heat cycle or 60% of the thickness to be weld before welding going to stop, in our project min 60% to be weld shall be completed.

Thanks & Regards

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[srinu p]

Hi,

There is no problem, need  to do atleast  half thickness or hot pass which ever is greater before removing the clamp/before interruption of weld.

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