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发表于 2008-5-26 07:59:51
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来自： 中国天津
ASME B31.3 Process piping -2006:4 j. l3 ]4 J- V8 @
345.9 Alternative Leak Test
* H( ~: k0 n8 AThe following procedures and leak test method may% W$ Z5 z3 I; _" g, d1 [
be used only under the conditions stated in para.
# c" W& F8 E' _345.1(c).5 _4 L9 O, V, K, t5 q5 \$ {
345.9.1 Examination of Welds. Welds, including
9 ~1 c5 _3 W4 T k) O, Qthose used in the manufacture of welded pipe and fittings,2 j2 C1 Q& d/ h x) `
which have not been subjected to hydrostatic or+ z4 R* G( \- I( o" F
pneumatic leak tests in accordance with this Code, shall3 W0 U. \" |3 h; R
be examined as follows:& S+ ^4 o8 V! }5 X
79* K# l" D, M6 [7 D7 D) o4 T: P: H+ J
(a) Circumferential, longitudinal, and spiral groove, }% Z% Q) _+ g9 L6 z, d. b
welds shall be 100% radiographed in accordance with
! [# J4 W3 Y. fpara. 344.5 or 100% ultrasonically examined in accordance/ d, D' [0 H5 T6 B) g1 p! x
with para. 344.6.
5 M' z# n) N+ s% T7 y$ L(b) All welds, including structural attachment welds,. }3 ]2 c1 @# \& e2 v ?$ f
not covered in (a) above, shall be examined using the
4 }7 v' E8 d& Q% {5 H/ i- Q; Eliquid penetrant method (para. 344.4) or, for magnetic* `7 @) i+ R) V3 x: c( H
materials, the magnetic particle method (para. 344.3). |
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发表于 2007-8-5 01:21:56
发表于 2007-8-5 08:27:42
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