渗透探伤作业指导书PT Operation Specification（中英对照）.doc

第三方NDE检测单位The Third Party Inspection OrganizationPT作业指导书PT Operation Specification目 录1. 检测范围Scope of testing 12. 检测人员Testing personnel 13. 一般要求General requirements 14. 操作Operation 45. 缺陷显示迹痕分类Types of traces indicting defects 66. 缺陷显示迹痕等级评定 Grade evaluation of defect indicating traces 77. 报告Reports 78. 附录Appendix 81. 检测范围Scope of testing1.1. 本章依据标准JB4730-1994《压力容器无损检测》The guidelines are written in accordance with JB4730-1994 Nondestructive Testing of Pressure Equipments.1.2. 本章适用于压力容器、压力管道、储罐The guidelines are applicable to pressure containers, pressure pipes and storage tanks.1.3. 本章选用的着色渗透检测方法为溶剂油去除型着色渗透检测方法。

The dye penetration method used in the guidelines is solvent-removal dye penetration test.2. 检测人员Testing personnel2.1. 凡从事检测的人员，都均经过技术培训，并按照《无损检测人员资格认可规则》(1995)及GB9445进行考核鉴定The testing personnel should have received technically trainings and passed qualification tests in accordance with Rules of Certification for NDT personnel (1995) and GB9445 national standard.2.2. 取得不同检测方法的各技术等级人员，只能从事与该等级相应的无损检测工作，并负相应的技术责任 Technicians who have passed certain levels of NDT qualification tests should perform NDT tasks equivalent to that level and be liable to such responsibilities.3. 一般要求General requirements3.1. 基本程序Basic procedure渗透检测操作的基本步骤如下:The following is the basic procedure for penetrant testing operation:3.1.1. 预清洗；Pre-cleaning3.1.2. 施加渗透液；Adding penetrant3.1.3. 清洗多余的渗透剂；Cleaning surplus penetrant3.1.4. 施加显像剂；Adding developer3.1.5. 观察及评定显示迹痕。

Observing and evaluating trace3.2. 渗透探伤剂Penetrating flaw-detecting agents3.2.1. 渗透探伤剂一般包括渗透剂、清洗剂和显像剂Penetrating flaw-detecting agents consist of penetrant, cleaning agent and developer.3.2.2. 渗透剂的质量控制应满足下列要求:Quality control of penetrant should meet the requirements as follow:1.1.1.1. 在每一批新的渗透剂中应取500ml贮藏在玻璃容器中作为样品保存起来，作为参照基准贮存温度为15-50℃,并应避免阳光照射As basis of reference, 500ml of every batch of new penetrant should be taken out to store in a glass vessel for conservation as sample. Storage temperature is 15～50℃ and avoid direct sunlight.1.1.1.2. .渗透剂应装在密封容器中，放在低温暗处保存。

Penetrant should be stored in a sealed container at lower temperature and in the darkness.1.1.1.3. 对正在使用的渗透剂做外观检验，如发现有明显的混浊或沉淀物，变色或难以清洗，则应予报废Visual inspection should be done for the penetrant using. If feculence, precipitate, and variation of color occur or it is difficult to clean, the penetrant should be rejected.1.1.1.4. 渗透剂用对比试块与基准渗透剂进行性能对比试验，当被检渗透剂显示缺陷的能力低于基准渗透剂时，应予报废Compare performance of the penetrant with the reference penetrant using a comparator. If the defect displaying ability of the penetrant tested is lower than that of the reference, it should be rejected.3.2.3. 显像剂的质量控制应满足下列要求:Quality control of developer should meet the requirements as follow:1.1.1.5. 对干式显像剂应经常进行检查，如发现粒子凝聚、有显著的残留或性能低下者要废弃。

Dry-developer should be regularly checked. If particle coacervation, obvious residual or under-performance are found, it should be rejected.3.2.4. 探伤剂必须具有良好的检测性能，对工件无腐蚀，对人体基本无毒害作用Flaw-detecting agent must have good performance, non-corrosive to workpiece, and basically non-hazardous to human.3.2.5. 探伤剂应根据被检材料的具体情况进行选择，对于同一检测工件，不能混用不同类型的探伤剂Flaw-detecting agent should be selected in view of the material tested. Different kind of flaw-detecting agents can’t be used together for the same workpiece.3.2.6 应选择质量合格，信誉好的厂商提供的探伤剂。

Quality acceptable flaw-detecting agents supplied by reputable manufacturers should be selected.3.3. 对比试块Penetrant Comparator3.3.1. 对比试块主要用于检验探伤剂性能及操作工艺如图1-1Comparator is mainly used to examine the performance of flaw detection agent and technological operation.AB1.5702 50 10图1-1 铝合金对比试块3.3.2. 对比试块的清洗和保存： 对比试块使用后要进行彻底清洗清洗时，通常是用丙酮仔细擦洗后，再放入装有丙酮和无水洒精的混合液(混合比为1:1)的密闭容器中保存，或用其它等效方法保存Cleaning and storage of comparator：Comparator must be cleaned after using. While cleaning, it is first cleaned with acetone. Then store in a sealed vessel containing mixture of acetone and absolute alcohol (1:1 mixing rate) or store using other equivalent methods.3.4. 表面准备Surface preparation3.4.1. 工件表面不得有铁锈、氧化皮、焊接飞溅、铁屑、毛刺以及各种防护层。

There muse be no iron rust, scale, spatter, iron chipings, burr and all kinds of inoxidizing coating on the surface of workpiece.3.4.2. 被检工件机加工表面粗糙度Ra值为6.3μm；被检工件非机加工表面的粗糙度Ra值为12.5μm但对不能打磨的工件可适当放宽The roughness value “Ra” for machined surface is 6.3μ, while that for non-machined surface is 12.5. For workpiece that cannot be sanded, “Ra” value is allowed to relax accordingly.3.4.3. 局部检测时，准备工作范围应从检测部位四周向外扩展25mmIn local testing, surface area to be prepared should extend 25mm from the tested site in all directions.4. 操作Operation4.1. 预清洗Pre-cleaning检测部位的表面状况在很大程度上影响着渗透检测的检测质量。

因此，在进行过表面清理之后还要进行一次预清洗，以去除检测表面的污垢清洗时，采用溶剂进行清洗范围应满足3.4.3的要求清洗后，检测面上遗留的溶剂、水份等必须干燥，且应保证在施加渗透剂之前不被污染The surface appearance of site tested would affect testing quality of penetrant examination to som。