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american petroleum institute

 

Alloy and Carbon Steel Bolting
for Use in the Petroleum and
Natural Gas Industries

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ترجمه RADIOGRAPHIC AND ULTRASONIC EXAMINATION - UW11

 در ابتدا پاراگرافهایی مطرح شده است که اجرای 100درصد رادیوگرافی در اتصالات مخزن الزامیست.

(a) Full Radiography. The following welded joints shall be examined radiographically for their full length in the manner prescribed in UW-51:
1. all butt welds in the shell and heads of vessels used to contain lethal substances [see UW-2(a)];
2. all butt welds in the shell and heads of vessels in which the nominal thickness [see (g) below] at the welded joint exceeds 1 1/2in. (38 mm), or exceeds the lesser thicknesses prescribed in UCS-57, UNF-57, UHA-33, UCL-35,orUCL-36 for the materials covered therein, or as otherwise prescribed in UHT-57, ULW-51, ULW-52(d), ULW-54,or ULT-57;