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Re: [MW:14361] Time between root pass and hot pass

By Materials & Welding
DEARS,
         Yes, u need to cut and reweld. Mostly hotpass is to burn and float out wagon track present in root pass ,so time between root and hot pass is 5 to 10 minutes


Regards,

SENBE

On Tue, May 15, 2012 at 5:25 PM, jesti fer <jesti_fer@yahoo.com> wrote:
Dear all,
We are doing 20" pipe line project with API 5L Gr.B material as per B31.4, Welding process SMAW (E6010 for root and rest with E 7018, both are up-hill) our welder welded one joint root pass and he kept this joint for long time. But our Qc instructed to cut and re-weld the joint. But the time between root pass and hot pass not mentioned in approved WPS and client specification also.
It necessary to cut and re-weld?
It is mentioned any were in the code (ASME or API)?
 
Please help me,,
  
Best Regards

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