中华人民共和国住房和城乡建设部公告

前言

1　总则

2　基本规定

• 2.1　单位和人员

• 2.2　γ射线探伤机

• 2.3　射线胶片

• 2.4　增感屏和像质计选择

• 2.5　观片灯

• 2.6　密度计

• 2.7　检测时机和表面状态要求

3　γ射线源的选择及允许透照的公称厚度范围

4　球罐焊缝划线和编号

5　标记和胶片布置

• 5.1　标记

• 5.2　胶片布置

6　像质计放置

7　γ射线源的放置位置

8　曝光时间的确定

9　无用射线和散射线的屏蔽

10　胶片处理

11　底片质量

12　γ射线防护及放射源管理

13　球罐钢熔化焊对接接头射线检测质量分级

• 13.1　一般规定

• 13.2　圆形缺陷的分级评定

• 13.3　条形缺陷的分级评定

• 13.4　综合评级

14　检测记录、报告及底片保存

15　现场检测质量控制

• 15.1　检测流程控制

• 15.2　检测过程监督检查

• 15.3　检测仪器设备质量控制

• 15.4　检测材料质量控制

• 15.5　射线底片与对接接头质量评定和质量控制

• 15.6　检测报告、检测记录质量控制

附录A　焊缝射线检测报告格式

本标准用词说明

引用标准名录

1 General provisions

2 Basic requirement

• 2.1 Enterprise and personnel

• 2.2 γ-ray source equipment

• 2.3 Films

• 2.4 Selecting of screen and IQIs

• 2.5 Viewing light

• 2.6 Densimeter

• 2.7 Inspection time and surface requirements

3 Choice of γ-source and acceptable radiographic range of normal thickness

4 Lineation and number of spherical tank weld

5 Mark and arranging of films

• 5.1 Mark

• 5.2 Arranging of films

6 Arranging of IQI

7 Location of γ-source

8 Time of exposure

9 Shielding of useless and scattered rays

10 Film processing

11 Film quality

12 γ-ray protection and γ-source management

13 Quality grading

• 13.1 General requirement

• 13.2 Acceptance standard of round flaw

• 13.3 Acceptance standard elongated flaw

• 13.4 Accumulation of imperfections

14 Testing record and report，saving of films

15 Quality control of locale inspection

• 15.1 Test flow control

• 15.2 Test process control

• 15.3 Quality control for test equipment

• 15.4 Quality control for test material

• 15.5 Quality control for films and quality viewing of weld joint

• 15.6 Quality control for reports and records

Appendix A Form for RT report of weld

Explanation of wording in this code

List of quoted standards