Thursday, September 6, 2012

Re: [MW:15230] Branch connections & RF pad

Please use separate thread for these questions (Q2 is not relevant to the subject)

A1. Added reinforcement is required when calculated as per para 304.3.3.b. Thickness selected will depend on the area of reinforcement. check with your designer.

A2. Bar Tees are utilized in a pig launcher/receiver system and/or at branches in the pipeline to ensure the safe passage of a pig past the open branch area. Manufactured as a special item.

On Thu, Sep 6, 2012 at 2:24 AM, ABHISHEK GHOSH <ghoshabhishekmech@gmail.com> wrote:
Dear Experts .. 

Please clarify :: 

Q1. In Branch connection , Usage of RF pad depends upon which factors??. Is B 31.3 states any requirement ?? 

Q2. Which code specifies dimension  of "Bar Tee" used for pipeline Pigging? ( 52 " ) ? 
 
 
Q3. In our project , we have to weld 52 " ( 19.1 mm)  x 18 "( std sch)  branch ( Stub In)  with RF pad. Header pipe thickness 19.1 mm.In ISO, it is mentioned to use RF pad of thickness 38.2 mm, But we have material of 19.1 mm thickness at site , issued by client.

 Is it really possible to weld two 19.1 mm ( 2 x 19.1 mm= 38.2  mm) Rf pad  to make it 38.2mm ?? If yes , what will be the weld joint configuration??

Thank you for your valuable time. 

With Regards. 
 

ABHISHEK GHOSH 


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