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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:. P A+ p9 i. H
345.9 Alternative Leak Test
/ J, S/ {' G& j. ]* j1 G( b. yThe following procedures and leak test method may
+ k% s1 T/ ^& Ibe used only under the conditions stated in para.
. j% ^, G/ e% `9 L; m345.1(c).
) s V* @7 p( x8 I3 {% R9 A7 G, H345.9.1 Examination of Welds. Welds, including$ j* _( I: ^ _# Z$ O' R
those used in the manufacture of welded pipe and fittings,; t4 h! [, o; ]
which have not been subjected to hydrostatic or3 l! s6 P- u8 {: h& a* B" a1 `5 H
pneumatic leak tests in accordance with this Code, shall
: [8 B5 u$ C+ {+ lbe examined as follows:
5 M G4 C1 B! N! R9 C& z2 N79' f2 C, @9 \" X5 t8 V; c: N
(a) Circumferential, longitudinal, and spiral groove
, W- } C' B7 w" o6 @; H- r, l) x( W& w% awelds shall be 100% radiographed in accordance with' ], C/ C" W! h* ]1 z/ q
para. 344.5 or 100% ultrasonically examined in accordance8 v1 N% v1 m$ ?. e% A4 g/ Y: M7 i
with para. 344.6.
9 m" u5 H: k1 g6 R: p(b) All welds, including structural attachment welds,
" ?# q4 }! D$ t$ cnot covered in (a) above, shall be examined using the
; w* i; P5 _; Y& y- v/ W) Pliquid penetrant method (para. 344.4) or, for magnetic9 R# Z0 c4 v+ K8 R0 ]7 u; U1 w
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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