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1、作业指导书（一）Task Steering（第一版 1nd edition）编制：审核：批准：执行日期：2007年10月20日1. 目的 Purpose1.1为使钢结构的部件和焊缝采用X射线检测时其全过程的操作规范化，以便 获得合格的透照底片，正确反映产品质量。Standardize the whole process of X-ray inspecting in order to acquire eligible negative reflecting quality of products correctly.2. 适用范围 Applied scope2.1本规程适用于钢结构中板厚340m
2、m的对接焊缝的射线透照检测。This regulations is applied to radial inspecting of butt weld of 340mm thickness steel structure plate.3. 弓|用标准Quoted standards3.1 ANSI/AWS D1.1（2006） “Structural welding code-steel”（钢结构焊接标准）3.2 ASTM/E 747 （使用金属线透度计控制射线照相检测质量的方法）3.3 ASME SEC .V3.4 ASME B31.34. 实施步骤 Procedure of perform
3、ance4.1 人员的要求 Requirements of personnel4.1.1从事射线照相检测的人员，必须掌握射线探伤的基础技术，具有足够的 部件和焊缝射线探伤经验，并掌握一定的材料，焊接基础知识。Theperson who inspect must know basic technology of NDT, basic knowledge of welding and material but have enough experience.4.1.2 探伤人员应由相关部门无损检测考核委员会培训和考核，并持有相关部 门无损检测考核委员会认可的RTII级或以上资格证书，才能从事与该 等
4、级相应的检验工作。The person who carries out flaw detecting should be trained and qualified by concerned Non-destructive testing committee and have certificate of RTII or above.4.1.3 评片员每年进行视力检查，不得有色盲和色弱，其近距离视力或近距离 矫正视力不低于J1/J2. The person who assesses film will check his/her vision acuity every year. N ot a
5、llowed to have color blindness and color weakness，Vision of close quarters or vision acuity of corrected should above JI/J2.4.2 表面状态 Surface condition：焊缝及热影响区的表面质量(包括焊缝余高)应经外观检查合格。表面 的不规则状态在底片上的图像不应掩盖焊缝中的缺陷或与之相混淆，否 则应做适当的修整。The quality of welding line and heat-affected zone (include weld reinforceme
6、nt) should be inspected by visual. Defects of weld shouldnt be covered up by image on negative which showing irregular state of surface, otherwise it should be adjusted in some extent.4.3 工作安全 Working safety：射线探伤工作应符合所有适用的安全规程This regulation should be compliant to all suitable safety rules.。4.4 X 射线
7、设备见表 1 About equipments of X-ray please see table 1表 Table 1制造厂家Manufacturer型号type管电压voltage管电流currentRigakucorporation300EG-S3300KV5MA日本理学250EG-S2250KV5MABALTOSPOTGFK-208200KV5MA/8MA中国丹东射线仪器公司XXG-2505250KV5MA中国丹东射线仪器公司XXG-2005200KV5MA4.5 射线胶片和增感屏 Intensifying screen and film of X-ray：射线胶片采用AGFA100X
8、300，增感屏采用pb:0.03前后铅箔屏。We adopted AGFA100X300 film, pb:0.03 intensifying screen.4.6线型象质计Linetype IQI：象质计是用来检查透照技术和胶片处理质量的，本规程使用的线型象质计 的型号和规格应符合AWS D1.1:2006第197页的规定。线型象质计的选用和要求见图 A IQI is for check transilluminating technology and quality of film processing. The type and specification of linetype tha
9、t used must be suit with regulation in page 197 of AWS D1.1: 2006. About choosing and requirements of IQI please see graph AENCAPSUUffED BETWEEN clear vimyl: plastic .060 5n.(i.52 mm) MAXIMUM 用透明的态烯基塑料包裹 最大为060in. (1.52mtn)THE W IM MUM DISTANCE BETWEEN THE AXIS OF WIRES IS NOT LESS THAN 3 TIMES THE
10、DIAMETER AMD MOT MORE THAN 200 in. (5.08 mm) 金屈统轴线间的是丞距离 :至少弛其次径的3倍且 最大为.00m. (5： 08mm)6 WIRES EQUALLY SPACEDE，根等距的金屈统V4 in. (6.35 mm) MINIMUMLEAD LETTERS 铅字是小 l/4in.j6.:35mn)LA RGEST WIREN UMBEH 最天的金属蛇代号NUMBER材料缀别代号LETTER标记字母.200 in.(5.0S mm)1/4 in. (6.35 rnm) MINIMUMLEAD LETTERS AMD NUMBEAS 铅字与代号最
11、小为l/4in. &稣；LENGTH 1 In.(25.4 mml MINIMUMFOR SETS A AND B对于3类和,B类，长度最小为1 in皮5. 4mm)Image QuaHty Irkdicator (Wire PenHirametw)统性象质计尺寸Wire Di白meter,线径 in. (mm)SaE A A 类SeiB B 类Sal C C ,类S争D D类0.D032 (0.08)0.010 (0.25)0.032 (0.81)0.1 Q (2司O.OOfl (0.1)0.013(0.33)0.040 (1.02)0.125(3.210.005 (0.130.016 (0
12、.4)0.050(1.27)0.160(4.06)0-0063 (0,160.020 (0.510.D63 (1.6)0.20(5.10-006 (0.2)0.025 (0.64)D.OBQ饵0.25 (6.4tJ-010 (Q.B5)0.032 061)0.100 (2,5)0.32 倍)Figure AImage Quality Indicator (Wire Penetrameter)图A线性象质计4.7 探伤工艺 Workmanship of fault detection：4.7.1 X射线拍摄射线照片时，焦点应尽可能对准受检焊缝的长度和宽度中心， 射线源一工件距离应不少于在单一平面
13、上曝光的底片总长度，一般采用 焦距=600mm。When taken pictures by X-radial, focus should be on length &width center of weld. Ray source-generally focus=600mm, workpiece shouldnt be less than total length of exposal negative.4.7.2 胶片应有足够长度，所放位置应使焊缝末端自由边以外，至少有13mm 的胶片受到射线源的直接照射，胶片的宽度应使焊接接头所有部分均摄 入照片，包括热影响区，照片上还应有足够空间容纳线
14、型象质计和胶片 识别标记而不影响焊缝及热影响区的范围。Film should have enough length, more than 13mm film is direct irradiated by ray source. It should have enough width to make sure all welding joints are taken into photo including heat-affected zone. Photos also should have enough space to contain line-type IQI and identify
15、ing marks without influencing scope of welding line and heat-affected zone.4.7.3为减少散射线的影响，应采用/1mm的铅板屏蔽背后散射。In order toreduce influence of scattered ray we should adopt /1mm leading to screen dispersion.4.7.4 为检查背后散射，应在暗盒背面贴附一个“B”的铅字标记（B的高度为13mm，厚度1.6mm），若在较黑背景上出现“B”的较淡影象，说明 背后散射防护不够，应予重照。In order to check dispersion we could attach a letter B on cassette5s back （Height 13mm, thickness 1.6mm）, if there is B light image on dark background it means we should pay attention on dispersion.4.7.5线型象质计应放在射线一侧的工作表面上被检焊缝区的两端（按图1或图2 要求）。Wire ty
