ASME Section VIII div 2 2010. ASME Boiler and Pressure Vessel Code. Alternative Rules
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2010 SECTION VIII, DIVISION 2
4-35
Table 4.2.10 – Some Acceptable Full Penetration Welded Nozzle Attachments Not Readily
Radiographable
Detail
Joint
Type
Joint
Category
Design Notes Figure
5 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
alternatively, a chamfer of
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
at 45 degrees
6 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
7 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
8 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
t
t
n
t
c
r
3
t
c
r
3
t
r
1
t
n
t
c
t
n
r
1
t
t
c
2010 SECTION VIII, DIVISION 2
4-36
Table 4.2.10 – Some Acceptable Full Penetration Welded Nozzle Attachments Not Readily
Radiographable
Detail
Joint
Type
Joint
Category
Design Notes Figure
9 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
2
19 (0.75 .)rmm in≥
•
4
6(0.25.)rmm in≥
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2010 SECTION VIII, DIVISION 2
4-37
Table 4.2.11 – Some Acceptable Pad Welded Nozzle Attachments And Other Connections To Shells
Detail
Joint
Type
Joint
Category
Design Notes Figure
1 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
[
]
1
min 0.6 , 0.6
fe
ttt≥
•
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
alternatively, a chamfer of
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
at 45 degrees
2 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
[
]
1
min 0.6 , 0.6
fe
ttt≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
3 7 D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
[
]
1
min 0.6 , 0.6
fe
ttt≥
•
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
alternatively, a chamfer of
(
)
3
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
at 45 degrees
t
e
t
n
t
c
t
t
c
t
f1
r
3
t
e
t
n
t
c
t
t
f1
r
1
t
e
t
n
t
c
t
t
f1
r
3
t
e
t
f1
t
c
2010 SECTION VIII, DIVISION 2
4-38
Table 4.2.11 – Some Acceptable Pad Welded Nozzle Attachments And Other Connections To Shells
Detail
Joint
Type
Joint
Category
Design Notes Figure
4 10 D
•
[
]
2
min 0.7 , 0.7
fe
ttt≥
5 7 D
•
[
]
2
min 0.7 , 0.7
fe
ttt≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
t
f2
t
t
f2
t
e
w
t
t
e
t
f2
r
1
w
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2010 SECTION VIII, DIVISION 2
4-39
Table 4.2.12 – Some Acceptable Fitting Type Welded Nozzle Attachments And Other Connections To
Shells
Detail
Joint
Type
Joint
Category
Design Notes Figure
1 7
D
• Limited to DIN 50 (NPS 2) and
smaller
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
2 7
D
• Limited to DIN 50 (NPS 2) and
smaller
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
3 7
D
• Limited to DIN 50 (NPS 2) and
smaller
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
4 10
D
• Limited to DIN 50 (NPS 2) and
smaller
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
[
]
2
min 0.7 , 0.7
fe
ttt≥
5 9
D
• Limited to DIN 50 (NPS 2)
maximum
• The groove weld
g
t
shall not be
less than the thickness of Schedule
160
•
(
)
min 0.7 , 6 0.25
cn
ttmmin≥
⎡⎤
⎣⎦
t
c
t
g
t
c
C
L
t
c
t
c
C
L
t
c
C
L
t
f2
t
f2
t
e
t
2010 SECTION VIII, DIVISION 2
4-40
Table 4.2.13 – Some Acceptable Welded Nozzle Attachments That Are Readily Radiographable
Detail
Joint
Type
Joint
Category
Design Notes Figure
1 1
D
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
2 1
D
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
3 1
D
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
•
34
0.2tt t+≤
•
12
18.5aa Degree+≤
4 1
D
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
t
n
t
r
2
r
1
a
3
1
t
r
1
t
n
r
2
r
2
45° Max.
30° Max.
1.5t min.
t
n
r
2
t
3
t
30° min.
13 mm (0.5 in.)
Min.
t
4
r
2
a
1
a
2
t
n
t
n
A
A
45° Max.
r
2
30° Max.
r
2
r
1
t
t
r
1
45° Max.
r
2
r
2
18.5° Max.
30° Max.
Section A-A
Sections Perpendicular and Parallel to the
Cylindrical Vessel Axis
0.2t max
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2010 SECTION VIII, DIVISION 2
4-41
Table 4.2.13 – Some Acceptable Welded Nozzle Attachments That Are Readily Radiographable
Detail
Joint
Type
Joint
Category
Design Notes Figure
5 1
D
•
(
)
1
min 0.25 ,3 0.125
n
rtmmin≥⎡ ⎤
⎣⎦
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
t
n
t
r
2
r
1
6 1
D
•
(
)
1
min 0.25 ,3 0.125
n
rtmmin≥⎡ ⎤
⎣⎦
[
]
2
min 0.25 ,19 (0.75 )
n
rtmmin≥
2010 SECTION VIII, DIVISION 2
4-42
Table 4.2.14 – Some Acceptable Partial Penetration Nozzle Attachments
Detail
Joint
Type
Joint
Category
Design Notes Figure
1 9
D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
1.25
wn
tt≥
2 9
D
•
[
]
min 0.7 ,6 (0.25 )
cn
ttmmin≥
•
1.25
wn
tt≥
3 9
D
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
max
defined as follows:
0.25 , 25
0.51 , 25 102
0.76 , 102
0.01 , 1
0.02 , 1 4
0.03 , 4
o
o
o
o
o
o
C
mm D mm
mm mm D mm
mm D mm
in D in
in in D in
in D in
≤
<≤
>
≤
<≤
>
4 9
D
•
[
]
2
min 0.7 , 0.7
fe
ttt≥
•
(
)
1
min 0.25 ,3 0.125rtmmin≥⎡ ⎤
⎣⎦
•
max
defined as follows:
0.25 , 25
0.51 , 25 102
0.76 , 102
0.01 , 1
0.02 , 1 4
0.03 , 4
o
o
o
o
o
o
C
mm D mm
mm mm D mm
mm D mm
in D in
in in D in
in D in
≤
<≤
>
≤
<≤
>
t
n
3 mm (0.0625 in.)
recess
t
w
t
c
t
n
3 mm (0.0625 in.) recess
Section A-A
t
w
t
c
t
n
t
c
A
A
C
max
t
n
D
o
Outside
r
1
1.25t
n
min.
t
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2010 SECTION VIII, DIVISION 2
4-43
4.2.8 Figures
Figure 4.2.1 – Weld Joint Locations Typical Of categories A, B, C, D, and E
2010 SECTION VIII, DIVISION 2
4-44
Notes:
1. Attachment weld size:
0.25at≥
and
0.5bt≥
2. Vents holes shall be considered for continuously attached pads
3. For design (e) above, a minimum of 50% of the web must be welded, evenly spaced around the
circumference of the shell
Figure 4.2.2 – Some Bracket, Lug and Stiffener Attachment Weld Details
Weld Buildup
Section A-A
3 mm (0.25 in.) max.
t
a
t
a
a
t
b
t
Round Corners
On Pads
b
t
Round Corners
On Pads
b
Section B-B
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