Re: [MW:29236] Hot Tap welding Procedure -Welding Code

Dear Sandeep, 

Generally hot tap specification will be provide by client or project management as it is followed case by case . So please you have to discuss with client. 

Client may ask for Mock up If its cryogenic or critical level ...you have to follow the things carefully 

With regards

Suresh 

On Fri, Mar 8, 2019 at 2:11 PM sandeep k sreedhar <sandeepkelakam@gmail.com> wrote:

Thank you for your replies, but when we are using onplot piping wps the in service requirements are not covered in the section IX. could you please advise on this matter?

Regards

sandeep K Sreedhar

On Fri, Mar 8, 2019 at 10:57 AM Paidi <bobsuresh24@gmail.com> wrote:

"According to  P&ID the hot tap is coming under the design code B31.3." , So you must follow the WPS which is related  to on plot piping .                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

On Fri, Mar 8, 2019 at 11:10 AM sandeep k sreedhar <sandeepkelakam@gmail.com> wrote:

Dear Experts

Greetings!

I have hot tap welding in my scope of work, According to  P&ID the hot tap is coming under the design code B31.3. 

The Hot tap welding requirement are as follows as per the client specification- ADNOC Group.

The CONTRACTOR/VENDOR shall follow procedures and qualifications specified in DGS 6300-001- WELDING AND NDE OF PIPING SYSTEM (Based on Section IX) for On-Plot Piping and DGS 6300-004- Welding and NDE of pipeline  for Off-Plot Piping- .

Welders shall be qualified in accordance with DGS 6300-001 for On-Plot Piping and DGS 6300-004 for Off-Plot Piping. 

For Off-plot pipelines, both the procedure and the welders should be qualified using a full-scale simulation of the connection, in accordance with API 1104 or equivalent COMPANY‟S specification. 

All the Hot tap sub contractor's proposing API 1104 based WPS since considering the service welding requirement.

Now I am confused which welding code has to be followed. Request for yours  kind advise on the same.

Regards

SANDEEP K SREEDHAR

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Thanks  & Best Regards,

Suresh Paidi

 

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SANDEEP K SREEDHAR

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Thanks  & Best Regards,

Suresh Paidi

 

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