2012年6月1日起实施无损检测（UT）工艺规程Regulation Of Ultrasonic Testing目录List1主题内容The subject content (2)2适用范围Application scope (2)3参考文件Reference documents (2)4人员资格Personnel qualification (3)5 设备要求Equipment requirements (3)6 探头Probe (4)7 试块Test block (4)8设备仪器校验Instrument calibration of equipments (6)9探头校准和耦合剂Probe calibration and coupling (6)10距离-波幅曲线（DAC曲线）Distance Amplitude Curve (6)11校验与复核Verifying and rechecking (8)12 检测程序Testing procedures (9)13 评定Assessing (17)14 记录Records (19)15 报告Report (19)附录Appendix (19)1主题内容The subject content本工艺流程规定了本司船舶产品超声检测的一般要求、技术等级、工艺文件、检测实施和焊缝质量分级等。

This regulation provides the general requirements, technical levels, process documents, test implementation and welding quality classification of ultrasonic testing on our company.2适用范围Application scope本工艺流程适用于本司造船、修船及非船产品零部件母材厚度为（8～150）mm铁素体钢全熔焊透缝A型脉冲反射式手工接触的超声波检测；不适用于铸钢及奥氏体钢焊缝，外径<250mm和内外径之比<70%的纵向焊缝；外径小于200mm的筒体周向焊缝、各种尺寸曲面相贯焊缝。

This regulation is applicable to A type pulse reflection type of manual contact ultrasonic testing for 8～150mm thickness of ferrite steel complete fusion welding on our company’s shipbuilding, repairing and parts of no-marine products. No applicable to cast steel and austenitic steel welds, longitudinal weld of outer diameter less than 250mm and the inner and outer diameter ratio less than 70%, column ring weld of outside diameter less than 200mm; various size of bend surface joining welds.3参考文件Reference documents3.1 JB/T4730-2005 《压力容器无损检测》超声波检测部分；3.1 JB/T4730-2005 The ultrasonic detection part of "nondestructive testing of pressure vessels".3.2中国船级社无损检测超声检测教材3.2 The ultrasonic textbook compiled by CCS.3.3 JB4126《超声检测用钢质试块的制造和控制》3.3 JB4126 "The manufacture and control of steel test piece for ultrasonic testing".3.4 ZBJ04001《A型脉冲反射式超声波探伤系统工作性能测试方法》3.4 ZBJ04001 "The performance test methods of A type pulse reflection ultrasonic flaw detection system".3.5 ZBY230《A型脉冲反射式超声波探伤仪通用技术条件》3.5 ZBY230 "General technical conditions of A type pulse reflection ultrasonic testing instrument".3.6 ZBY232《超声波探伤用1号标准试块技术条件》3.6 ZBY232 "Technical conditions of 1 type standard test piece for ultrasonic testing".3.7 ZBY231《超声波探伤用探头性能测试方法》3.7 ZBY231 "The performance test methods of probe for ultrasonic inspection".3.8 CB/T3959-2011《船舶钢焊缝超声波检测工艺和质量分级》3.8 CB/T3959-2011 "Technology and quality classification of ultrasonic testing in ship steel weld".3.9 DNV入级指导No.7中超声检测部分3.9 The ultrasonic detection part of joining DNV direction No.7.3.10 CTS-4020数字式超声波探伤仪使用说明书3.10 The direction of CTS-4020 digital ultrasonic testing instrument.4人员资格Personnel qualification4.1从事无损检测的人员必须经过专业技术培训，并按照中国船级社《无损检测人员资格鉴定与认证规范》进行资格考核，取得资格证书后只能从事与其证书所注明的方法与级别相适应的无损检测工作；4.1 The NDT personnel must through professional technical training and qualification examination according to the CCS "nondestructive testing personnel qualification and certification standard”, and only can deal with the nondestructive testing work adapt to the method and level indicated in qualification certificate.4.2Ⅰ级人员可在Ⅱ、Ⅲ级人员指导下进行无损检测操作，记录检测数据，整理检测资料；4.2 Ⅰlevel personnel can nondestructive testing operation, record test data, establish inspection documents under guidance of Ⅱ, Ⅲ level personnel.4.3Ⅱ级人员可编制一般的无损检测程序，按照无损检测工艺规程或在Ⅲ级人员指导下编写工艺卡，并按无损检测工艺独立进行检测操作，评定检测结果，签发检测报告；4.3 Ⅱ level personnel can compile the ordinary testing procedures of the nondestructive testing, according to nondestructive testing procedure or under the guidance of Ⅲlevel personnel to write the process card, and independent test according to nondestructive testing regulation, assess the test results, and issue the test report.4.4Ⅲ级人员可根据标准编制无损检测工艺，审核或签发检测报告，协调Ⅱ级人员对检测结论的技术争议。

4.4. Ⅲlevel personnel can compile the nondestructive testing procedures according to standard, review or issue inspection report, harmonize the test results dispute from Ⅱ level personnel.5 设备要求Equipment requirements5.1现使用的仪器见表15.1 Now using equipments see table 1.5.2 仪器的工作频率范围一般为0.5~10MHz。

5.2 The operating frequency range of instrument general is 0.5~10MHz.5.3仪器和探头的组合灵敏度：在达到所检工件最大声程时，其灵敏度余量应不小于10dB，且电噪声电平不大于垂直满刻度的20%。

5.3 Combination sensitivity of instrument and probe: Reaching the maximum beam path of work piece, the surplus sensitivity shall be not less than 10dB, and electrical noise level is not greater than 20% of vertical full scale.5.4衰减器精度：总增益量不小于80db，最小步进每档不大于2db；任意相邻12dB误差在±1dB以内，最大累计误差不超过1dB。