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Anonymous Poster

Reinforcement Pad

07/29/2010 12:25 AM

Where can I find the max. distance between the inside of the reinforcement pad (weld area) and the outside of the branch connection?
Also posted in: also posted in Mechanical Engineering
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brkmech
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Join Date: May 2009
Location: UAE
Posts: 80
Good Answers: 3
#1

Re: Reinforcement Pad

07/29/2010 5:30 AM

I have not quite understand your statement. If you elaborate your actual problem with a sketch preferably will help.

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Anonymous Poster
#2

Re: Reinforcement Pad

07/29/2010 11:42 PM

Please explain just what you are working on. Your query is too vague.
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Anonymous Poster
#3

Re: Reinforcement Pad

07/30/2010 12:01 AM

AWS -1.2, ASSUMIING THE MATERIAL IS FERRIOUS.
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Anonymous Poster
#4

Re: Reinforcement Pad

07/30/2010 12:04 AM

I FORGOT, IF THIS IS A BOILER SPECIFICATION, REFER TO THE PARTICULAR REQUIREMENT
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3
Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

Join Date: Feb 2007
Location: Cairo, Egypt
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Good Answers: 248
#5

Re: Reinforcement Pad

07/30/2010 5:41 AM

If you mean the gap around the outside dia. of nozzle and inside dia. of the reinforcing pad, this gap is considered as the root opening and preferred (for arc welding) to be about 1 up to 3 mm, depending on welding procedure, electrode dia., ... etc.

In design of pressure vessels and heat exchangers which fabricated from CS and SS, I used to use that gap as 2 mm = (Dpi - Do) / 2

Where Do = Outside dia. of nozzle pipe, and Dpi = Inside dia. of reinforcing pad.

..........................................

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Anonymous Poster
#9
In reply to #5

Re: Reinforcement Pad

07/31/2010 10:00 PM

This is exactly what I needed to know.

Does this apply to pipe as well?
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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

Join Date: Feb 2007
Location: Cairo, Egypt
Posts: 1733
Good Answers: 248
#10
In reply to #9

Re: Reinforcement Pad

07/31/2010 11:03 PM

• That can be applied for pressure vessels and piping systems with large diameters where it is allowed for internal welding (inward) of shell/run into nozzle pipe.

• Otherwise, the shell/run can be furnished with outward nozzle weld, like the attached sketch.

............................

Note. This detail drawing was extracted from my design drawings for a Shell-and-tube heat exchanger E-514C/D at 2003.

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Anonymous Poster
#11
In reply to #10

Re: Reinforcement Pad

08/01/2010 12:18 AM

Thanks
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Anonymous Poster
#6

Re: Reinforcement Pad

07/30/2010 8:09 AM

Abdel,

Just an FYI, Leg 42 is the wrong weld symbol... Should be just a single fillet...
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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

Join Date: Feb 2007
Location: Cairo, Egypt
Posts: 1733
Good Answers: 248
#7
In reply to #6

Re: Reinforcement Pad

07/30/2010 8:58 AM

Yes Guest, you are wright.

The correct symbol for Leg 42 (only fillet) is :

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brkmech
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#8

Re: Reinforcement Pad

07/30/2010 11:59 AM

Dear Guests,

My frank opinion on this post is that our guests are testing our patience and we are beating around the bush.

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