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[MW:1160] Reducer

By Materials & Welding

Dear Lukas,

I am afraid no one is able to understand the arrangement you are talking about. May be a hand sketch could help.

Secondly, assuming, you are talking about a multiple connection on a header pipe. And all connections are like a cross tee connection. But as it looks you are using a plate fab. reducer to replace the conc. red. Definitely you have to consult your stress engineer if you are replacing with a diff. thickness item being a steam line.

And if standard(bought out item) cross tee is not used and if you are going to use a reinforced stub-in/out connection, it is not 100% in acc. with B31.1 or 31.3 because it is a little complicated branch connection and the final verfication has to be in acc. with ASME IX as the branching is in opp. sides.

With regards,
Kannan



<Nialel.Lukas@lglgold.com>
Sent by: materials-welding@googlegroups.com

18/09/2008 02:49

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[MW:1135] Reducer





Hi
 
Can anyone advise if it is possible to use a 250 x 150 eccentric reducer with wall thickness of 11mm in place of a 250 x 150 concentric reducer, BW A234-WPB, SCH STD on CS1 Pipe ASTM 106, on a geothermal steam branch? From a well head, the branch of DN150 feeds DN250 to a 250 x 200 Straight Tee BW234-WPB, SCH STD as a junction with another DN250 –DN150 line to a well head and the DN250 Steam header feeding DN300 line eventually. Is it possible to use this eccentric reducer as per ASME IX and B31.1 Welding Code?
 
You explanation or suggestion will be highly appreciated.
 
N.Lukas
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