1. Welders Qualification,
According
To
ASME Sec IX

2. POSITION
AND
DIAMETER LIMITS
(With OtherLimits Qw303)

3. PLATE - GROOVE
Plate andPipe Over
24 in (610 mm) OD
Pipe <=24 in (610)
mm OD
Pipe and plate
Plate -Groove 1G F F (NOTE 2) F
Plate -Groove 2G F, H F, H (NOTE2) F, H
Plate -Groove 3G F, V F, NOTE2 F, H,V
Plate -Groove 4G F,O F, NOTE2 F, H,O
Plate -Groove 3G& 4G F, V, O F, NOTE2 ALL
Plate -Groove
2G,3G,
&4G
ALL F,H NOTE2 ALL
Plate -Groove
Special
Position
SP,F SP,F SP,F
Groove Fillet
Weld Position
Qualification Test Position And Type Weld Qualified (Note 1)
NOTE1:
1)Position Of Welding As Shown As Shown In QW-461 And QW-461.2
F= Flat,H=Horizontal,V=Vertical,O=Overhead
2)Pipe 2 7/8 in (72mm) OD and over
3) See Diameter Restrictions In Qw-452.3, Qw452.4, Qw452.6

4. Plate andPipe over
24 in (610 mm) OD
Pipe <=24 in (610)
mm OD
Pipe and plate
Plate -Fillet 1F -- -- F NOTE 2
Plate -Fillet 2F -- -- F, H NOTE2
Plate -Fillet 3F -- -- F, H,V NOTE2
Plate -Fillet 4F -- -- F, H,O NOTE2
Plate -Fillet 3F &4F -- -- ALL NOTE2
Plate -Fillet
Special
Position
-- -- SP,F NOTE2
NOTE
F= Flat H=HorizontalV=Vertical, O=Overhead
3)See Diameter Restrictions In Qw-452.3, Qw452.4, Qw452.6
Groove Fillet
Weld Position
1)Position Of Welding As Shown As Shown In Qw-461 And Qw-461.2
2)Pipe 2 7/8 in (72mm) od and over
Qualification Test Position And Type Weld Qualified (Note 1)
PLATE - FILLET

5. Plate andPipe Over
24 in (610 mm) OD
Pipe <=24 in (610)
mm OD
Pipe and plate
Pipe-Groove 1G F F F
Pipe-Groove 2G F,H F,H F, H
Pipe-Groove 5G F,V,O F,V,O ALL
Pipe-Groove 6G ALL ALL ALL
Pipe-Groove 2G&5G ALL ALL ALL
Pipe-Groove
Special
Position
SP,F SP,F SP,F
NOTE
F= Flat H=HorizontalV=Vertical,
1)Position Of Welding As Shown As Shown In Qw-461 And Qw-461.2
O=Overhead
2)Pipe 2 7/8 in (72mm) od and over
3)See DiameterRestrictions In Qw-452.3, Qw452.4, Qw452.6
Groove Fillet
Weld Position
Qualification Test Position And Type Weld Qualified (Note 1)
PIPE-GROOVE

6. Plate and Pipe over
24 in (610 mm) OD
Pipe <=24 in (610)
mm OD
Pipe and plate
Pipe-Fillet 1F -- -- F
Pipe-Fillet 2F -- -- F, H
Pipe-Fillet 2FR -- -- F,H
Pipe-Fillet 4F -- -- F,H,O
Pipe-Fillet 5F -- -- ALL
Pipe-Fillet
Special
Position
-- -- SP,F
NOTE
F= Flat H=HorizontalV=Vertical,
Qualification Test Position And Type Weld Qualified (Note 1)
Groove Fillet
Weld Position
1)Position Of Welding As Shown As Shown In Qw-461 And Qw-461.2
O=Overhead
2)Pipe 2 7/8 in (72mm) od and over
3)See Diameter Restrictions In Qw-452.3, Qw452.4, Qw452.6
PIPE – FILLET

7. POSITIONS
QW-461

8. PLATE-GROOVE
QW-461.3

9. 1G

10. 2G

11. 3G

12. 4G

13. PIPE-GROOVE
QW-461.4

14. 1G

15. 2G

16. 5G

17. 6G

18. PLATE-FILLET
QW-461.5

19. 1F

20. 2F

21. 3F

22. 4F

23. PIPE –FILLET
QW-461.6

24. 1F(Rotated)

25. 2F

26. 2FR
(ROTATED)

27. 4F

28. 5F

31. Qualified With
Qualified For
X
X
X
X
F-No5 with out
Backing
X
F-No5 with
Backing
X
F-No4 with out
Backing
F-No 4 with
Backing X
X
F-No3 with out
Backing X
F-No 3 with
Backing X X X
X
F-No 2 with out
Backing X
F-No 2 with
Backing X X X X X
X X
F-No 1 with out
Backing X
F-No5
with
Backing
F-No5
with out
Backing
F-No 1 with
Backing X X X X X X X
F-No 3
with
Backing
F-No3
with out
Backing
F-No 4
with
Backing
F-No4
with out
Backing
F-No 1
with
Backing
F-No 1
with out
Backing
F-No 2
with
Backing
F-No 2
with out
Backing

32. QUALIFIED WITH QUALIFIED FOR QUALIFIED WITH QUALIFIED FOR
F-NO 1 WITH BACKING F-NO 1 WITH BACKING F-NO 1 WITH BACKING
F-NO 1 WITH BACKING F-NO 2 WITH BACKING
F-NO 1 WITH OUT BACKING F-NO 3 WITH BACKING
F-NO 1 WITH BACKING F-NO 4 WITH BACKING
F-NO 2 WITH BACKING F-NO 1 WITH BACKING
F-NO 1 WITH BACKING F-NO 2 WITH BACKING
F-NO 2 WITH BACKING F-NO 3 WITH BACKING
F-NO 4 WITH BACKING
F-NO 4 WITH OUT BACKING
F-NO 1 WITH BACKING F-NO 1 WITH BACKING
F-NO 2 WITH BACKING F-NO 5 WITH BACKING
F-NO 3 WITH BACKING F-NO 1 WITH BACKING
F-NO 1 WITH BACKING
F-NO 2 WITH BACKING
F-NO 3 WITH BACKING
F-NO 3 WITH OUT BACKING
F-No 2 WITH OUT BACKING
F-No 3 WITH BACKING
F-No5 WITH OUT BACKING
F-No3 WITH OUT BACKING
F-No 4 WITH BACKING
F-NO 5 WITH OUT BACKING
F-NO 5 WITH BACKING
F-NO 1 WITH OUT BACKING
F-No 2 WITH OUT BACKING
F-No 2 WITH BACKING
F-No4 WITH OUT BACKING
F-No5 WITH BACKING

33. Test Specimens

34. TEST SPECIMENS [ QW-452.1(a)]
Thickness of
weld metal,
IN(mm)
TYPE AND NUMBER OF EXAMINATIONS AND TEST SPECIMENS
REQUIRED
Visual
Examination per
QW-302.4
Side Bend
QW-462.2
[note (1)]
Face Bend QW-
462.3(a) Or
QW-462.3(b)
[Note (1),(2)]
Root Bend qw-
462.3(a) or QW-
462.3(b) [note(1),(2)]
LESS THAN
3/8 (10)
X --- 1 1
3/8(10) TO LESS
THAN 3/4(19mm)
X 2 [NOTE (3)] NOTE (3) NOTE (3)
3/4(19MM)
AND OVER
X 2 --- ---

35. Thickness Limits

36. Thickness of Weld Metal Qualified
Thickness,t,of weld metal inch,
The coupon inch(mm) [Note1&
2]
Thickness of weld metal Qualified
[Note3]
• Up to13 mm
•½(13mm) and over with a
minimum of three layers
•2t
•Maximum to be welded

37. DIAMETER
LIMITS
QW-452.3

38. GROOVE WELD DIAMETER
LIMITS QW-452.3

39. WELDER
PERFORMANCE
ESSENTIAL
VARIABLES

40. SMAW (QW-353)
PARAGRAPH BREAF OF
VARIABLES
QW-402 JOINTS DELETION OF BACKING
QW-403 BASE METAL
CHANGE OF
PIPEDIA(QW-403.16)
&CHANGE OF
P-NUM(QW-403.18)
QW-404 FILLERMETALS
CHANGE OF
FILLER (QW404.15) &
CHANGEOF
WELD t DEPOSIT (QW404.30)
QW-405 POSITIONS
ADDITION OF POSITION
(QW-405.1) &
VERTI& DOWN WELDING
(QW-405.3)

41. What Is UNS Number?

42. (Ans)
Unified Numbering System

43. What is SFA Number?

44. (Ans)
Specification of Filler Analysis

45. What is P-Number?

46. (Ans)
Material Group Number