SNT-TC-1A-2016-addendum+18增补

SNT-TC-1A-2016-addendum+18增补
1.0Scope
1.0范围
This addendum is effective immediately and the contents herein will be included in the main body of SNT-TC-1A during the next revision.
本附录立即生效，本附录的内容将在下一次修订时包含在SNT-TC-1A的主体中。

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2.0 Definitions
2.0术语定义
2.1.18 False Call: When an indication and/or grading unit is incorrectly identified as being a defect.
2.1.18错误调用：当指示和/或分级单元被错误地识别为缺陷时。

2.1.19 Detection Rate: The number or percentage of false calls allowed for a test specimen as defined by the NDT Level III.
2.1.19检测率：无损检测等级III规定的试样允许的误报次数或百分比。

2.1.20 Method: One of the disciplines of NDT; for example, ultrasonic testing, within which various test techniques may exist.
2.1.20方法：无损检测专业之一；例如，超声波检测，其中可能存在各种检测技术。

2.1.21 Personalized Instruction: Personalized instruction may consist of blended classroom, supervised laboratory, and/or hybrid online competency-based course delivery. Modular content is covered through online presentations, in the classroom, and/or in small groups. Personalized instruction also enables students to achieve competency using strategies that align with their knowledge, skills, and learning styles.
2.1.21个性化教学：个性化教学可能包括混合教室、监督实验室和/或基于能力的混合在线课程交付。

模块化内容通过在线演示、课堂上和/或小组进行介绍。

个性化教学还使学生能够使用与其知识、技能和学习风格相一致的策略来获得能力。

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Table 6.3.1B: Recommended Initial Training and Experience Levels for NDT Level II Limited
表6.3.1B:NDT II级有限认证的建议初始培训和经验水平
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8.0 Examinations
8.0考试
8.1.5 Examinations administered by the employer for qualification should result in a passing composite grade of at least 80 percent, with no individual written examination having a passing grade less than 70 percent. The practical examination should have a passing grade of at least 80 percent.
8.1.5由业主（雇主）管理的资格考试应至少达到80%的合格综合分数，任何单项笔试的合格分数不得低于70%。

实践考试的及格率至少为80%。

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8.5.4 NDT Level I Practical Examination. Proficiency should be demonstrated in performing the applicable NDT technique on one or more specimens or machine problems approved by the NDT Level III and in evaluating the results to the degree of responsibility as described in the employer’s written practice. At least ten (10) different checkpoints requiring an understanding of test variables and the employer’s procedural requirements should be included in this practical examination. The candidate should detect all discontinuities and conditions specified by the NDT Level III. The written practice should address detection rates as well as the maximum number of false calls acceptable.
Note: While it is normal to score the practical on a percentile basis, practical examinations should contain checkpoints that failure to successfully complete will result in failure of the examination.
8.5.4无损检测一级实践考试。

在对一个或多个经无损检测III级批准的试样或机器问题执行适用无损检测技术时，以及在按照业主书面实践中所述的责任程度评估结果时，应证明熟练程度。

本次实践考试应至少包括十（10）个不同的检查点，要求了解测试变量和业主的程序要求。

候选人应检测NDT III级规定的所有不连续性和条件。

书面实践应说明检测率以及可接受的最大误报次数。

注：虽然以百分位数为基础对实践考试进行评分是正常的，但实践考试应包含未能成功完成将导致考试失败的检查点。

8.5.5 NDT Level II Practical Examination. Proficiency should be demonstrated in selecting and performing the applicable NDT technique within the method and interpreting and evaluating the results on one or more specimens or machine problems approved by the NDT Level III. At least ten (10) different checkpoints requiring an understanding of NDT variables an d the employer’s procedural requirements should be included in this practical examination. The candidate should detect all discontinuities and conditions specified by the NDT Level III. The written practice should address detection rates as well as the maximum number of false calls acceptable. An
example of a practical examination checklist is attached as Appendix B to this Recommended Practice. The example checklist has been provided as guidance on development of practical examinations for any method or level.
Note: While it is normal to score the practical on a percentile basis, practical examinations should contain checkpoints that failure to successfully complete will result in failure of the examination.
8.5.5无损检测二级实践考试。

在选择和执行方法中适用的无损检测技术，解释和评估无损检测三级批准的一个或多个试样或机器问题的结果时，应证明熟练程度。

至少十（10）个不同的检查点需要了解无损检测变量和业主程序要求应包括在本次实践考试中。

候选人应检测NDT III级规定的所有不连续性和条件。

书面实践应说明检测率以及可接受的最大误报次数。

实践考试检查表示例附在本推荐规程附录B中。

示例检查表已作为任何方法或水平的实践考试开发指南提供。

注：虽然以百分位数为基础对实践考试进行评分是正常的，但实践考试应包含未能成功完成将导致考试失败的检查点。

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12.0 Recertification
12.0重新认证
12.3
When new techniques are added to the employer’s written practice and the NDT Level III personnel is assigned to perform examinations using these new techniques, the NDT Level III personnel should receive applicable training, take applicable examinations, and obtain the necessary experience, such that the NDT Level III meets the requirements of the new techniques in Table 6.3.1.A, prior to their next recertification date, in the applicable method.
12.3当业主的书面实践中增加了新技术，且指定无损检测三级人员使用这些新技术进行检查时，无损检测三级人员应接受适用培训，参加适用考试，并获得必要的经验，在下一次重新认证日期之前，采用适用方法，使无损检测等级III符合表6.3.1A中新技术的要求。