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[MW:4091] RE: 4089] RE: 4088] Weld Efficiency

By Materials & Welding
I suppose this will be welded by GTAW process to obtain full penetration weld (which will give same quality of weld metal both sides) hence can be considered under type 1.
 
Even I would like to know which type of joint falls under type 3 (in my opinion only those circumferential welds which don't require full penetration), anybody give example?

From: Phirke, Praphulla D (GE Infra, Oil & Gas) [mailto:praphulla.phirke@ge.com]
Sent: Tuesday, January 19, 2010 4:56 PM
To: Bathula Raghuram (Mumbai - PIPING); materials-welding@googlegroups.com
Subject: RE: 4089] RE: 4088] Weld Efficiency

Hi Bathula
Its simple Pipe to pipe joint single butt weld joint ( 4 to 8" Sch 10 pipes) .But considering the thickness & diameter its lying in Type 3.
Can we consider Type 1, but its for double weld butt joints?
 
Thanks
Praphulla

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: Tuesday, January 19, 2010 4:50 PM
To: materials-welding@googlegroups.com
Subject: [MW:4089] RE: 4088] Weld Efficiency

what type of joint it is, if it is to be radiographed, why not consider under type 1 of table UW12

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Phirke, Praphulla D (GE Infra, Oil & Gas)
Sent: Tuesday, January 19, 2010 4:30 PM
To: materials-welding@googlegroups.com
Subject: [MW:4088] Weld Efficiency
Importance: High

Hi All
As per ASME SEC VIII Div I, in Table UW-12 , for type No 3 weld joints, 0.7 joint efficiency is specified without any radiographic examination.
But If I performed radiography examination, then what joint efficiencies values I should consider for Full & Spot radiography ? As per code & Table UW-12, its NA. 
 
Please guide me.
 
Thanks 

Praphulla D. Phirke 

Lead Engineer

GE Infrastructure

Oil & Gas

ASE-RC PV & HEX

John F. Welch Technology Centre

 

T   + 91-080-4088 5903

F   + 91-080-2841 2111

M  + 91-9886052515

praphulla.phirke@ge.com

 

Odyssey, Phase - 5, Wing A, 2nd Floor,

Plot No 122, EPIP Phase II,

Whitefield Road, Bangalore 560 066

GE India Technology Center Pvt. Ltd.

 

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