Agenda Item:
Title:
Figure 5.6 Notes Revisions
Date:
10/17/14
650-2019
Purpose:
Source:
Revision:
Name:
David Rosenkrantz
Company: Access Engineering, LLC
Phone:
610 349-4429
E-mail:
DRosenkrantz@AccessEngineer.com
Fix the notes on figure 5.6
Rosenkrantz email
0
Impact:
The business impact of this item is neutral
Contact:
Rationale:
Revisions:
API 650 12th Edition Addendum 1 September 2014 Figure 5.6
E spacings in 5.7.3.b and figure 5.6 are for repad fillet and insert butt welds to each other.
E spacings are not to shell butt-welds.
Column heading E refers the reader to note 2 Note 2 is about spacing to shell butt-welds.
See attached
The first attached page is the original text, yellow is removed or changed
The second attached page is the revised text, red is new text
Page 1 of 1
KEY
RTR = Regular-Type Reinforced Opening (nozzle or manhole) with diamond or circular shape reinforcing plate, or insert plate, or thickened insert plate,
that does not extend to the bottom (see Figure 5-7A and Figure 5-8).
LTR = Low-Type Reinforced Opening (nozzle or manhole) using tombstone type reinforcing plate, insert plate, or thickened insert plate that extends to
the bottom [see Figure 5-8, Detail (a) and Detail (b)].
S-N = Shell openings with neither a reinforcing plate nor with a thickened insert plate (i.e. integrally reinforced shell openings; or openings not requiring
reinforcing).
Variables
Shell t
Condition
t  12.5 mm
(t  1/2 in.)
As
welded
or
PWHT
Reference
Paragraph
Number
5.7.3.2
Minimum Dimension Between Weld Toes or Weld Centerline (Notes 1 and 3)
A (2)
B (2)
150 mm (6 in.)
75 mm (3 in.)
or 21/2t
5.7.3.3
C (2)
5.7.3.1.a
Table 5.6a
and
Table 5.6b
8W or
250 mm
(10 in.)
75 mm (3 in.)
for S-N
5.7.3.3
5.7.3.3
• 5.7.3.4
• 5.7.3.4
5.7.3.2
5.7.3.3
5.7.3.3
5.7.3.3
• 5.7.3.4
• 5.7.3.4
8t or 1/2 r
8t
8W or
150 mm (6 in.)
5.7.3.3
PWHT
G (4)
8W or
8W or
250 mm (10 in.) 250 mm (10 in.)
5.7.3.1.b
t > 12.5 mm
(t > 1/2 in.)
F (4)
75 mm (3 in.)
or 21/2t
5.7.3.3
• 5.7.3.4
• 5.7.3.4
As
Welded
E (2)
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
for S-N
5.7.3.3
t > 12.5 mm
(t > 1/2 in.)
D (3)
150 mm (6 in.)
8t or 1/2 r
Table 5.6a
and
Table 5.6b
75 mm (3 in.)
or 21/2t
8t
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
for S-N
Table 5.6a
and
Table 5.6b
8t or 1/2 r
NOTE 1
NOTE 2
8t
If two requirements are given, the minimum spacing is the greater value, except for dimension “F.” See Note 4.
t = shell nominal thickness. 8W = 8 times the largest weld size for reinforcing plate or thickened insert plate periphery weld (fillet or butt weld)
from the toe of the periphery weld to the centerline of the shell butt-weld.
NOTE 3 D = spacing distance established by minimum elevation for low-type reinforced openings from Table 5.6a and Table 5.6b, column 9.
NOTE 4 Purchaser option to allow shell openings to be located in horizontal or vertical shell butt-welds. See Figure 5.9.
t = shell thickness, r = radius of opening. Minimum spacing for dimension F is the lesser of 8t or 1/2 r.
Figure 5.6—Minimum Weld Requirements for Openings in Shells According to 5.7.3
KEY
RTR = Regular-Type Reinforced Opening (nozzle or manhole) with diamond or circular shape reinforcing plate, or insert plate, or thickened insert plate,
that does not extend to the bottom (see Figure 5-7A and Figure 5-8).
LTR = Low-Type Reinforced Opening (nozzle or manhole) using tombstone type reinforcing plate, insert plate, or thickened insert plate that extends to
the bottom [see Figure 5-8, Detail (a) and Detail (b)].
S-N = Shell openings with neither a reinforcing plate nor with a thickened insert plate (i.e. integrally reinforced shell openings; or openings not requiring
reinforcing).
Variables
Shell t
Condition
t  12.5 mm
(t  1/2 in.)
As
welded
or
PWHT
Reference
Minimum Dimension Between Weld Toes or Weld Centerline (Notes 1, 2 and 3)
Paragraph
Number
A
B
150 mm (6 in.)
75 mm (3 in.)
or 21/2t
5.7.3.2
5.7.3.3
C
5.7.3.1.a
Table 5.6a
and
Table 5.6b
8W or
250 mm
(10 in.)
75 mm (3 in.)
for S-N
5.7.3.3
5.7.3.3
• 5.7.3.4
• 5.7.3.4
5.7.3.2
5.7.3.3
5.7.3.3
5.7.3.3
• 5.7.3.4
• 5.7.3.4
8t or 1/2 r
8t
8W or
150 mm (6 in.)
5.7.3.3
PWHT
G (5)
8W or
8W or
250 mm (10 in.) 250 mm (10 in.)
5.7.3.1.b
t > 12.5 mm
(t > 1/2 in.)
F (5)
75 mm (3 in.)
or 21/2t
5.7.3.3
• 5.7.3.4
• 5.7.3.4
As
Welded
E
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
for S-N
5.7.3.3
t > 12.5 mm
(t > 1/2 in.)
D (4)
150 mm (6 in.)
8t or 1/2 r
Table 5.6a
and
Table 5.6b
75 mm (3 in.)
or 21/2t
8t
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
or 21/2t
75 mm (3 in.)
for S-N
Table 5.6a
and
Table 5.6b
8t or 1/2 r
8t
NOTE 1 If two requirements are given, the minimum spacing is the greater value, except for dimension “F.” See Note 5.
NOTE 2 Weld spacings are measured to the toe of a fillet-weld, the toe of an insert or thickened insert plate butt-weld, or the centerline of a shell butt-weld.
NOTE 3 t = shell nominal thickness. 8W = 8 times the largest weld size for a periphery reinforcing plate fillet-weld, insert or thickened insert plate periphery
butt-weld.
NOTE 4 D = spacing distance established by minimum elevation for low-type reinforced openings from Table 5.6a and Table 5.6b, column 9.
NOTE 5 Purchaser option to allow shell openings to be located in horizontal or vertical shell butt-welds. See Figure 5.9. Minimum spacing for dimension F
is the lesser of 8t or 1/2r
Figure 5.6—Minimum Weld Requirements for Openings in Shells According to 5.7.3