This standard specifies four non-destructive testing (NDT) methods (including radiographic testing, ultrasonic testing, magnetic particle testing and penetration testing) and their quality grading.
Radiographic (X or γ) testing is applicable to the testing and mass grading of the circumferential butt joints of pipelines (made from low carbon steel, low alloy steel and other metal materials with 2mm~50mm wall thickness) for long-distance and collective transport of oil and gas or at the oil and gas stations.
Ultrasonic testing is applicable to the testing and mass grading of the circumferential butt joints of pipelines (made from carbon steel, low alloy steel and other metal materials with 2mm~50mm wall thickness and 57mm ~1400mm pipe diameter) for long-distance and collective transport of oil and gas or at the oil and gas stations; it is not applicable to the testing of the butt joints between elbow and straight pipe, hubbed flange and straight pipe as well as return elbow and straight pipe.
The magnetic particle testing is applicable to the testing and acceptance of the welding joint surface and near surface imperfection of ferro magnetic pipelines for long-distance and collective transport of oil and gas or at the oil and gas stations as well as of steel storage tanks under normal pressure.
The penetration testing is applicable to the testing and acceptance of the welding joint surface opening imperfection of pipelines for long-distance and collective transport of oil and gas or at the oil and gas stations as well as of steel storage tanks under normal pressure.
This standard is not applicable to either the NDT of industrial and public pipelines, or the NDT of the fabricating weld joints of oil and gas pipelines.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
4.1 Application Principles
4.2 Responsibility of Testing Organization (Department)
4.3 NDT Process Specification
4.4 Testing Personnel
4.5 Duties of Personnel in Charge of NDT
5 Radiographic Testing
6 Radiation Protection
7 Radiographic Testing Personnel
8 Radiographic Testing Equipment, Apparatus and Material
8.1 Selection of Ray Source and Energy
8.2 Film and Intensifying Screen
8.3 Image Quality Indicator (IQI)
8.4 Shield of Useless Ray and Scattered Ray
8.5 Recognition System
8.6 Film Viewing Illuminator and Film Evaluation Room
8.7 Nigrometer and Density Comparison Strip
9 Surface Condition
10 Radiographic Testing Technique
10.1 Radiography Mode
10.2 Geometric Condition
11 Exposure and Exposure Curve
11.1 Exposure
11.2 Exposure Curve
12 Film Processing
13 Negative Film Evaluation
13.1 Evaluation Requirements
13.2 Negative Film Quality
13.3 Evaluation
14 Radiographic Testing Quality Grading
14.1 Quality Grading Criteria
14.2 Imperfection Grading
15 Radiographic Testing Report
16 Ultrasonic Testing
17 Ultrasonic Testing Personnel
18 Flaw Detector, Probe and System Performance
18.1 Flaw Detector
18.2 Probe
18.3 System Performance of Ultrasonic Flaw Detector and Probe
19 Calibration and Recheck
19.1 Calibration
19.2 Recheck of Detector and Probe System
20 Ultrasonic Test Block
21 Preparation Before Testing
21.1 Testing Surface
21.2 Couplant
21.3 Probe Selection
21.4 Fabrication of Distance-Amplitude Curve
22 Testing
23 Quality Grading of Butt Joint
23.1 Quality Grading
23.2 Imperfection Evaluation and Testing Result Grading
24 Ultrasonic Testing Report
25 Magnetic Particle Testing
26 Magnetic Particle Testing Personnel
27 Magnetic Particle Testing Facility, Equipment and Material
27.1 Facility
27.2 Equipment
27.3 Magnetic Particle, Carrier Liquid and Magnetic Suspension
27.4 Calibration
27.5 Safety Protection of Magnetic Particle Testing
28 Site Operation of Magnetic Particle Testing
28.1 Tested Surface Preparation
28.2 Test Timing and Range
28.3 Magnetic Particle Testing Technique
29 Recheck of Magnetic Particle Testing
30 Standards for Acceptance of Magnetic Particle Testing
30.1 Classification and Record of Magnetic Particle Indication
30.2 Evaluation of Related Magnetic Particle Indication
31 Magnetic Particle Testing Report
32 Penetrant Testing
33 Penetration Testing Personnel
34 Testing Materials
35 Penetration Test Block
36 Safety Protection of Penetration Testing
37 Operation on Penetration Testing Site
37.1 Testing Time
37.2 Surface Requirements
37.3 Basic Steps
37.4 Operation Requirements
38 Recheck of Penetration Testing
39 Standard for the Acceptance of Penetration Testing
39.1 Classification of Indication Marks
39.2 Result Evaluation
40 Record and Report of Penetration Testing
Appendix A (Informative) Testing Method of Probe Main Parameters
Appendix B (Informative) Adjustment of Instrument Scanning Line
Appendix C (Normative) DAC Curve Drawing
Appendix D (Normative) Application of Reference Block and Testing Sensitivity of Root Imperfection (Incomplete Penetration)
Appendix E (Informative) Determination of Loss Difference of Surface Sound Energy
Appendix F (Normative) Testing Method under Non-standard Temperature
Appendix G (Informative) Report Form
