Personnel performing RT inspections should be qualified and certified, with experience in weld inspection. Film Quality The film used for RT inspection should have high sensitivity and resolution, suitable for detecting weld defects. Films should be stored and handled properly to avoid damage or degrad...
is also affected by the lighting condition in the place of viewing, and the experience level for recognizing various features in the image. The following material was developed to help students develop an understanding of the types of defects found in weldments and how they appear in a ...
Discontinuitiesareinterruptionsinthetypicalstructureofamaterial、Theseinterruptionsmayoccurinthebasemetal,weldmaterialorheataffectedzones、Discontinuities,whichdonotmeettherequirementsofthecodesorspecificationusedtoinvokeandcontrolaninspection,arereferredtoasdefects、 ...
Discontinuities Discontinuitiesareinterruptionsinthetypicalstructureofamaterial.These interruptionsmayoccurinthebasemetal,weldmaterialor"heataffected" zones.Discontinuities,whichdonotmeettherequirementsofthecodesor specificationusedtoinvokeandcontrolaninspection,arereferredtoas defects. GeneralWeldingDiscontinuities The...
These interruptions may occur in the base metal, weld material or "heat affected" zones. Discontinuities, which do not meet the requirements of the codes or specification used to invoke and control an inspection, are referred to a 7、s defects.General Welding DiscontinuitiesThe following ...
主管道窄间隙自动焊RT疑似缺陷Taking the 2# unit 1U4, 1U6 main pipe welding joint with suspected interlayer incomplete fusion defects in FangjiaShan nuclear power project as an example, this paper analyzes the narrow-gap automatic welding characteristics of main pipe, puts forward measures to avoid...
These interruptions may occur in the base metal, weld material or "heat affected" zones. Discontinuities, which do not meet the requirements of the codes or specification used to invoke and control an inspection, are referred to as defects.General Welding DiscontinuitiesThe following discontinuities ...
1.2 This procedure applies to the radiographic inspection of welds in metallic materials fusion welding. This procedure can be used for the welds of plates and pipes. 2、参考标准References BS EN ISO 17636:2013焊接无损探伤——射线检测 BS EN ISO 17636:2013Non-destructive examination of weld-RT IS...
(the correct number letter will be inserted into the brackets behind the question, and only one answer can be selected) Basic theory, equipment operation, process protection evaluation 2. can detect defects in radiographic images is the direction of the minimum size (a): A. contrast B. un...
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