人孔开在环缝上

killerman

我正在设计一款食品机械的容器，设计压力2MPa。内径只有1000mm，但是顶部椭圆封头正中央有一个机械密封的底座，直径约330mm，于是，350的人孔没地方了，只得开在焊缝上。请教各位，这种情况8-1册怎么规定的？

xujiehua

UW-14！！！！！！！！！！！！！！！！！！！！！！！！

Lgx

要多看标准，不懂再求助！

yangtzeliu

不反对应用，参见标准的处理

我是定位销

二楼已回答，UW14有具体的无损检测要求。

sedin

如果是按国内标准设计呢？

我是定位销

UW-14 OPENINGS IN OR ADJACENT TO WELDS
(a) Any type of opening that meets the requirements
for reinforcement given in UG-37 or UG-39 may be located
in a welded joint.
任何满足UG-37或者UG-39开孔可以位于焊接接头之上。
(b) Single openings meeting the requirements given in
UG-36(c)(3) may be located in head‐to‐shell or Category
B or C butt welded joints, provided the weld meets the
radiographic requirements in UW-51 for a length equal
to three times the diameter of the opening with the center
of the hole at midlength. Defects that are completely removed
in cutting the hole shall not be considered in judging
the acceptability of the weld.
(c) In addition to meeting the radiographic requirements
of (b) above, when multiple openings meeting
the requirements given in UG-36(c)(3) are in line in a
head‐to‐shell or Category B or C butt welded joint, the requirements
of UG-53 shall be met or the openings shall be
reinforced in accordance with UG-37 through UG-42.
(d) Except when the adjacent butt weld satisfies the requirement
for radiography in (b) above, the edge of openings
in solid plate meeting the requirements of
UG-36(c)(3) shall not be placed closer than 1/2 in.
(13 mm) from the edge of a Category A, B, or C weld for
material 11/2 in. (38 mm) thick or less.

xxy000111

国内标准设计，也是被允许的。

yunyun0310

学习一下，我们设计压力容器时一般是拒绝焊缝上开孔的，

dulishun

国内标准，GB/T 150.3-2011，“6.1.4 开孔附近的焊接接头”。