Interesting tidbit for Sec. VIII:
Standard Designation:
BPV Section VIII Div 1
Edition/Addenda:
Para./Fig./Table No:
Subject Description:
Section VIII, Division 1 (1995 Edition, 1997 Addenda); UW-52(c)
Date Issued:
01/26/1999
Record Number:
BC98-290
Interpretation Number :
VIII-1-98-53...
Table 136.4.1-1 Mandatory Minimum Nondestructive Examinations for Pressure Welds or Welds to Pressure-Retaining Components
The table tells exactly what is required.
I don't follow this reasoning. I agree with the AI....Cat D. I would classify this as a corner joint. Unless you have some info that you are not sharing.
Neither of these are "required" by Code.
So the symbol indicates a backing or back weld. Still possible this symbol is indicating melt through (welding one side only)....the symbol is usually filled in black if it is melt through, but could be an oversight.
Assuming a backing or back weld, means there is access to the back side...
If you are welding both sides (or can confirm UW-35 requirements): E = 0.7 no RT, E = 0.85 Spot RT, E = 1.0 Full RT
If you are welding one side (not able to satisfy UW-35): E = 0.65 no RT, E = 0.8 Spot RT, E = .90 Full RT
I would also suggest you take a look at App. 47.
That's why we have welding procedures...to give information on how to weld basemetal A to basemetal B. Also, most filler metal companies (ex. Lincoln) have filler metal selection guides to get you started.
Search this site. It has been discussed many times.
You can combine multiple WPSs in a single weld joint.
You can also use 200.4(b) to increase the thickness qualified on a new WPS....assuming you meet the requirements of 200.4(b).
If your GTAW was done on a 1/2" thick coupon, you can combine it...
