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David Bunch
David Bunch
18:56 Jan-03-2010
Weld joint configurations according to ASME B&PV

Where can I find a listing of the various weld joint configurations that are used by the Boiler and Pressure Vessel code? So far, I've only been able to find joint configurations in B31.3, but these only cover a handful of welds, and skip double-vee welds entirely.

More specifically, can anyone tell me the dimensions and angles for a double-vee welded half-inch thick steel plate? How big is the root face (land), what is the spacing, etc.

 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
12:44 Jan-04-2010
Re: Weld joint configurations according to ASME B&PV
In Reply to David Bunch at 18:56 Jan-03-2010 (Opening).

David

B31.3. is piping code so unlikely to find double-vee - Api 1104 maybe, but neither are part of BPV.

i assume you are required to examine weld for which you have no profile info. which should appear on any drawing or WPS. At 12,7mm w.t. that only leaves 6,3mm either side of the root, so if you draw the cap width and allow 1mm root face, 1mm root gap you wont be far out for UT purposes anyway by dwg the prep faces in.

 
 Reply 
 
Len Andersen
Engineering
New York City Department of Transportation, USA, Joined Nov 2009, 31

Len Andersen

Engineering
New York City Department of Transportation,
USA,
Joined Nov 2009
31
20:09 Jan-04-2010
Re: Weld joint configurations according to ASME B&PV
In Reply to David Bunch at 18:56 Jan-03-2010 (Opening).

David,
You might contact the one below. It is year ago info. They have people who try to help!

James Shih (Gentleman Speaks Chinese and is From Taiwan).Man Who Handles “Boiler Pressure Vessel Code / Section IX!

shihj@asme.org

212-591-8539

212-591-8562 and www.asme.org.
Sincerely
Len Andersen
212-839-6599, 4042 FAX / 914-237-7689 (H) / 914-536-7101 (Mobil)

http://lenandersen.com/personal_info/resume.html

NYC Mechanical Engineers http://sections.asme.org/metropolitan%5Fny

 
 Reply 
 
collin maloney
NDT Inspector, - Plant Inspector
Applus RTD, Australia, Joined Nov 2000, 147

collin maloney

NDT Inspector, - Plant Inspector
Applus RTD,
Australia,
Joined Nov 2000
147
05:31 Jan-05-2010
Re: Weld joint configurations according to ASME B&PV
In Reply to David Bunch at 18:56 Jan-03-2010 (Opening).

David

these details are contained in the PQR / WPS and are considered essential variables. Any change requires the requalification of the welding procedure. Details such as root gap, included angle and "land should be there.

Cheers
Collin

 
 Reply 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 280

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
280
18:12 Jan-05-2010
Re: Weld joint configurations according to ASME B&PV
In Reply to collin maloney at 05:31 Jan-05-2010 .

ASME does not specify all possible joint configurations thats why you cannot find them. You should be inspecting to a procedure which should include these details which are derived from the approved WPS that was used to make the welds. If its an in-service inspection of an old weld where you cannot trace the WPS use the assumptions identified earlier.

 
 Reply 
 

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