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1、* Co.,Ltd.焊缝检验规程4Rev.:0Page:1 of 14Title: RADIOGRAPHIC EXAMINATION PROCEDURE FOR BUTT WELDSRADIOGRAPHIC EXAMINATION PROCEDURE FOR BUTT WELDS对接焊缝射线检测工艺规程 CONTROLLED 在控本 UNCONTROLLED 非在控本 COPY NO 副本编号：PREPARED BY 编制： DATE 日期： REVIEWED BY 审核： DATE 日期： APPROVED BY 批准： DATE 日期：* Co.,Ltd.焊缝检验规程4Rev.:0Page
2、:2 of 14Title: RADIOGRAPHIC EXAMINATION PROCEDURE FOR BUTT WELDS1. General 1.1 This procedure is applied to the x-ray radiographic examination of butt welds for pressure vessels constructed in accordance with ASME Code Section Div1. 1.2 This procedure shall be supplemented, when necessary, with the
3、examination instructions defining more specific variables, which will be prepared by NDE Level personnel. 2. Qualification of Examination Personnel 2.1 Any person engaged in the radiographic examination shall be qualified and certified as a radiographic examiner in accordance with * Co., Ltd.s “Writ
4、ten Practice for NDE Personnel Training, Examination, Qualification and Certification”(NO.: QCD-011). 2.2 The NDE Levelshall receive the necessary instruction or supervision from a certified NDE Level or Level Examiner. The NDE Level shall receive the instruction or supervision from a NDE Level Exam
5、iner. 2.3 According to the respective responsibility range, all examiners shall complete the examination conforming to the referencing ASME Code Sections, standards and written instructions. They shall assure the working quality. 3. Equipment , Tools and Materials The LevelExaminer shall select the
6、equipment, tools and materials to assure that they are in compliance with the following conditions and the requirement of the examination instruction. 3.1 One of the x-ray equipment shall be selected from Table 1. Table 1 1. 概述 1.1 本工艺规程适用于按ASME 规范第卷第册要求制造的压力容器的对接焊缝的x射线照相检测。 1.2 必要时，本工艺规程应由探伤作业指导书进行
7、补充以规定更详细的变量，此指导书由NDE 级人员编制。 2. 检测人员资格 2.1从事射线探伤的检测人员必须按南京宝色钛业有限公司的(文件号：QCD-011)进行资格考核评定。 2.2 NDE级须接受合格的级或级必要的指导或监督。NDE级须接受NDE 级的指导或监督。 2.3 根据各自的职责范围，所有检测人员应按ASME规范有关卷，标准和作业指导书进行检测并保证工作质量。3.设备、器材级人员所选用的设备、器材应能保证符合下列条件和探伤作业指导书的要求。 3.1 X射线设备应从表1中选用。TypeMfr.Max. TubeVoltabe(KVp)Max. TubeCurrent(mA)Foc.
8、Size(mm)Permitted max. material thick(mm)SteelTiZrxx-2505Beijing25052 x 2386322xx-3005Dandong30051.0 x 2.3467028 表 1类型制造厂家最大管电压KVp最大管电流mA焦点尺寸(mm)允许的材料最大穿透厚度mmSteelTiZrxx-2505北京25052 x 2386322xx-3005丹东30051.0 x 2.3467028 3.2 Film Film selection shall be in accordance with SE-1815, Standard Test Metho
9、d for Film Systems for 3.2 胶片 胶片须根据SE-1815工业射线照相的胶片系统分类的标准测试方法来选择。胶片分类表应由胶片制造厂提供。胶片* Co.,Ltd.焊缝检验规程4Rev.:0Page:3 of 14Title: RADIOGRAPHIC EXAMINATION PROCEDURE FOR BUTT WELDSIndustrial Radiography. The classification table of film shall be provided by the film manufacturer. Film system classes Speci
10、al, ,W-A, and W-B are permitted. Depending on the x-ray penetration thickness, a suitable film shall be selected. When using two films method, two different types of film shall be selected. 3.3 Screen A suitable lead screen shall be selected from Table 2. Table 2系统分为特殊、,W-A,和W-B。应根据X射线穿透厚度，选择合适的胶片。采
11、用双片法时，应选用两种不同类型的胶片。 3.3 增感屏 从表2中选择适当的铅增感屏。 表2Tube VoltageThickness of lead Screen(mm)管电压铅增感屏厚度(mm)FrontBack前 屏后 屏0.050.050.100.050.050.1 3.4 Densitometer and Step Wedge Film The digital densitometer listed in Table 3 shall be used for judging radiograph density. The densitometer shall be checked aga
12、inst a calibrated step wedge film at least once every 90days by the NDE Level or Examiner. The step wedge film shall be calibrated once every 12months by the National Bureau of Standards. Table 3 3.4 黑度计和阶梯黑度片 用表3 列出的数码黑度计测定射线底片密度。黑度计至少每90天由NDE 级或级用校验过的阶梯黑度片校验一次。黑度片须至少每12个月由国家标准局校验一次。表 3Type Manufac
13、turerMea., RangeMea., Precision型号制造厂测量范围测量精度TD-210ZHEJIANGZHENGHAI0.00-4.00D0.03DTD-210浙江瓯海0.00-4.00D0.03D 3.5 Image Quality Indication(IQI) 3.5.1 Type and material of IQIs 3.5.1.1 The wire type IQI presented as Fig. 1 and Tab.4 be used. The wire type IQI shall be manufactured and identified in accordance with the requirements in SE-747. 3.5.1.2 The wires shall be fabricated from material or alloy with same or less radiation absorption than the material being radiographed. 3.5 象质计(IQI) 3.5.1 象质计类型和材料 3.5.1.1应使用线型象质计(图1和表4)。线型象质计的制造和标识应符合SE-747的要求。 3.5.1.2 金属丝的材质应与被透检
