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1、Unit 10 Radiographic Testing,第十单元 射线检测,Part 4 Nondestructive Testing Code, Standard, Specification and Procedure,第四部分 无损检测标准,T-210 SCOPE,The radiographic method described in this Article for examination of materials including castings and welds shall be used together with Article 1, General Requirem
2、ents.,本章描述的用于铸件和焊接件等材料射线照相检测方法应与第一章，通用要求一起使用。,T-220 General Requirements T-221.1 Written Procedure,Radiographic examination shall be performed in accordance with a written procedure. Each procedure shall include at least the following information, as applicable: material type and thickness range iso
3、tope or maximum X-ray voltage used source-to-object distance distance from source side of object to film source size film brand and designation screens used,射线检测应该根据书面程序实施。每个程序应至少包括以下信息（如适用） 材料类型和厚度范围 放射源或最高管电压 源到工件的距离 工件源侧到胶片的距离 源尺寸 胶片品牌和名称 增感屏,T-220 General Requirements T-222.1 Materials Including
4、 Castings,Surfaces shall satisfy the requirements of the applicable materials specification or referencing Code Section, with additional conditioning, if necessary, by any suitable process to such a degree that the images of surface irregularities cannot mask or be confused with the image of any dis
5、continuity on the resulting radiograph.,材料表面应满足有关材料技术规范或本规范的有关篇章，包括附件条件，如有必要，可用如何适当的方法加工，使任何表面的不规则不至于遮蔽或者混淆任何不连续性的成像。,T-230 Equipment And Materials T-231.1 film,Radiographs shall be made using industrial radiographic film.,射线照相应使用工业射线检测胶片。,T-230 Equipment And Materials T-232 Intensifying Screens,Int
6、ensifying screens may be used when performing radiographic examination in accordance with this Article.,当根据本章进行射线检测时可以使用增感屏。,T-270 Examination T-271.2 Double-Wall Technique.,Single-Wall Viewing. For materials and for welds in components, a technique may be used in which the radiation passes through
7、two walls and only the weld (material) on the film-side wall is viewed for acceptance on the radiograph. 。,单壁观察：对于材料及零部件的焊缝，可采用使用射线通过其双壁，但仅对胶片侧的焊缝（材料）部分进行评定并作出是否接受的决定,T-280 Evaluation T-282 Radiographic Density,The transmitted film density through the radiographic image of the body of the appropriat
8、e hole IQI or adjacent to the designated wire of a wire IQI and the area of interest shall be 1.8 minimum for single film viewing for radiographs made with an X-ray source and 2.0 minimum for radiographs made with a gamma ray source.,通过适当的孔型像质指示器本体或线型像质指示器指定编号线的临近区域和受检区域的底片透射黑度，在以X射线透照并作单片观察时，应至少为1.
9、8；当以伽马射线透照并作单片观察时，应至少为2.0.,T-280 Evaluation T-281 Quality of Radiographs,All radiographs shall be free from mechanical, chemical, or other blemishes to the extent that they do not mask and are not confused with the image of any discontinuity in the area of interest of the object being radiographed.,所有的射线底片都不应该有机械、化学或其他的污损，以避免对被透照工件的受检区域产生遮蔽或混淆任何缺陷的影像。,
