1 Scope
1.1 This Part of NB/T 47013 specifies the ultrasonic testing methods and quality grading requirements for workpiece flaws of pressure equipment by Type A pulse-echo ultrasonic testing instrument.
1.2 This Part is applicable to the ultrasonic testing of raw materials or spare parts and welded joints of metal pressure equipment, as well as the metal pressure equipment in-service.
1.3 This Part specifies the ultrasonic measurement methods for the thickness of pressure equipment.
1.4 The ultrasonic testing of the supporting and structural members related to the pressure equipment may also make reference to this Part.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 11259 Non-destructive Testing - Practice for Fabrication and Control of Steel Reference Blocks Used in Ultrasonic Testing
GB/T 12604.1 Non-destructive Testing -Terminology - Terms Used in Ultrasonic Testing
GB/T 27664.1 Non-destructive Testing - Characterization and Verification of Ultrasonic Test Equipment - Part 1: Instruments
GB/T 27664.2 Non-Destructive Testing - Characterization and Verification of Ultrasonic Test Equipment - Part 2: Probes
JB/T 8428 Non-destructive Testing - General Specification for Ultrasonic Test Block
JB/T 9214 Non-destructive Testing - Practice for Evaluating Performance Characteristics of A Scope Ultrasonic Pulse - Echo Testing Systems
JB/T 10062 Testing Methods for Performance of Probes Used in Ultrasonic Flaw Detection
NB/T 47013.1 Nondestructive Testing of Pressure Equipments - Part 1: General Requirements
3 Terms and Definitions
For the purpose of this Part, the terms and definitions in GB/T 12604.1 and NB/T 47013.1 as well as the following ones apply.
3.1
Reduction of backwall echo caused by the presence of discontinuities BG/BF
The ratio of the first bottom echo amplitude BG in the good area near the flaw area to the first bottom echo amplitude BF in the flaw area when testing the forgings. It is expressed by dB.
3.2
Grouped discontinuities
When testing the forgings, there are five or more flaw reflection signals within the range equal to 50mm sound path at the scanning line on display screen; or five or more flaw reflection signals are found within the same depth range on 50mm×50mm testing surface; their reflected wave amplitudes are greater than or equal to the flaw of a specific equivalent of flat-bottom pore diameter.
3.3
Reference sensitivity
The sensitivity of regulating the artificial reflector echo height of reference block or the bottom echo height of tested workpiece to some certain benchmark.
3.4
Scanning sensitivity
The sensitivity of actual testing by properly improving dB (gain) based on reference sensitivity and according to the surface condition, flaw testing requirements, probe type, etc.
3.5
Through thickness dimension of the flaw (flaw height)
Dimension of flaw at the direction of workpiece thickness.
3.6
Echo dynamic patterns
The envelope line of probe movement distance and the echo amplitude variation of corresponding flaw reflector.
3.7
Base material nominal thicknesses (workpiece thickness)/t
Workpiece thickness is defined as follows:
a) As for plate welded joints, if the base material thicknesses at both sides of weld are the same, t is the nominal thickness of base material; if not, t is the nominal thickness of the thinner side of the base material;
b) As for insert-type nozzle fillet joint, t is the nominal thickness of cylinder or head; as for abutting-type fillet joint between nozzle and cylinder (or head), t is the nominal thickness of nozzle;
c) As for T-type welded joint, t is the nominal thickness of web.
4 General Requirements
4.1 Testing personnel
4.1.1 The general requirements for ultrasonic testing personnel shall meet the relevant requirements of NB/T 47013.1.
Contents
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Ultrasonic Testing Method and Quality Grading of Raw Materials or Spare Parts for Pressure Equipment
6 Ultrasonic Testing Method and Quality Grading of Welded Joint for Pressure Equipment
7 Ultrasonic Testing Method for Pressure Equipment Thickness
8 Ultrasonic Testing Method for Pressure Equipment In-service
9 Ultrasonic Testing Record and Report
Appendix A (Normative) Requirements for Electrical Performance Index of Ultrasonic Testing Instrument
Appendix B (Normative) Performance Index Requirements of Probe for Ultrasonic Testing
Appendix C (Normative) Performance Requirements of Double Crystal Normal Probe
Appendix D (Normative) Ultrasonic Angle Probe Testing Method and Acceptance Standard of Plates for Pressure Equipment
Appendix E (Normative) Ultrasonic Angle Probe Testing Method and Quality Grading of Steel Forgings for Pressure Equipment
Appendix F (Normative) Ultrasonic Angle Probe Testing Method of Austenite Steel Forgings for Pressure Equipment
Appendix G (Normative) Ultrasonic Testing Method and Quality Grading of Welding Overlay for Pressure Equipment
Appendix H (Normative) Ultrasonic Testing Method and Quality Grading of Butt Joint for Aluminum, Aluminum Alloy and Titanium Pressure Equipment
Appendix I (Informative) Ultrasonic Testing Method and Quality Grading of Austenitic Stainless Steel Butt Joints
Appendix J (Normative) Ultrasonic Testing Method for Longitudinal Butt Joints on Curved Surface of Pressure Equipment
Appendix K (Normative) Ultrasonic Testing Method for Circumferential Butt Joints on Curved Surface of Pressure Equipment
Appendix L (Normative) Ultrasonic Testing Method for Fillet Joint between the Nozzle of Pressure Equipment and Cylinder (or Head)
Appendix M (Normative) Ultrasonic Testing Methods for T-shaped Welded Joint
Appendix N (Normative) Specific Requirements for Ultrasonic Testing of Different Types of Welded Joints
Appendix O (Normative) CSK-IIIA Test Block
Appendix P (Normative) Determination of Sound Energy Transmission Loss Difference
Appendix Q (Normative) Echo Dynamic Pattern
Appendix R (Normative) Flaw Height Measurement (I) – Flaw Height Measurement by Tip Diffraction Wave Method
Appendix S (Normative) Flaw Height Measurement (II) - Flaw Height Measurement by Maximum Tip Echo Method
Appendix T (Normative) Flaw Height Measurement (III) – Flaw Height Measurement by -6dB Method
NB/T 47013.3-2015/XG1-2018, NB 47013.3-2015/XG1-2018, NB 47013.3-2015XG1-2018, NB/T47013.3-2015/XG1-2018, NB/T 47013.3, NB/T47013.3, NB47013.3-2015/XG1-2018, NB 47013.3, NB47013.3, NB47013.3-2015XG1-2018, NB 47013.3, NB47013.3
Introduction of NB/T 47013.3-2015/XG1-2018
1 Scope
1.1 This Part of NB/T 47013 specifies the ultrasonic testing methods and quality grading requirements for workpiece flaws of pressure equipment by Type A pulse-echo ultrasonic testing instrument.
1.2 This Part is applicable to the ultrasonic testing of raw materials or spare parts and welded joints of metal pressure equipment, as well as the metal pressure equipment in-service.
1.3 This Part specifies the ultrasonic measurement methods for the thickness of pressure equipment.
1.4 The ultrasonic testing of the supporting and structural members related to the pressure equipment may also make reference to this Part.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 11259 Non-destructive Testing - Practice for Fabrication and Control of Steel Reference Blocks Used in Ultrasonic Testing
GB/T 12604.1 Non-destructive Testing -Terminology - Terms Used in Ultrasonic Testing
GB/T 27664.1 Non-destructive Testing - Characterization and Verification of Ultrasonic Test Equipment - Part 1: Instruments
GB/T 27664.2 Non-Destructive Testing - Characterization and Verification of Ultrasonic Test Equipment - Part 2: Probes
JB/T 8428 Non-destructive Testing - General Specification for Ultrasonic Test Block
JB/T 9214 Non-destructive Testing - Practice for Evaluating Performance Characteristics of A Scope Ultrasonic Pulse - Echo Testing Systems
JB/T 10062 Testing Methods for Performance of Probes Used in Ultrasonic Flaw Detection
NB/T 47013.1 Nondestructive Testing of Pressure Equipments - Part 1: General Requirements
3 Terms and Definitions
For the purpose of this Part, the terms and definitions in GB/T 12604.1 and NB/T 47013.1 as well as the following ones apply.
3.1
Reduction of backwall echo caused by the presence of discontinuities BG/BF
The ratio of the first bottom echo amplitude BG in the good area near the flaw area to the first bottom echo amplitude BF in the flaw area when testing the forgings. It is expressed by dB.
3.2
Grouped discontinuities
When testing the forgings, there are five or more flaw reflection signals within the range equal to 50mm sound path at the scanning line on display screen; or five or more flaw reflection signals are found within the same depth range on 50mm×50mm testing surface; their reflected wave amplitudes are greater than or equal to the flaw of a specific equivalent of flat-bottom pore diameter.
3.3
Reference sensitivity
The sensitivity of regulating the artificial reflector echo height of reference block or the bottom echo height of tested workpiece to some certain benchmark.
3.4
Scanning sensitivity
The sensitivity of actual testing by properly improving dB (gain) based on reference sensitivity and according to the surface condition, flaw testing requirements, probe type, etc.
3.5
Through thickness dimension of the flaw (flaw height)
Dimension of flaw at the direction of workpiece thickness.
3.6
Echo dynamic patterns
The envelope line of probe movement distance and the echo amplitude variation of corresponding flaw reflector.
3.7
Base material nominal thicknesses (workpiece thickness)/t
Workpiece thickness is defined as follows:
a) As for plate welded joints, if the base material thicknesses at both sides of weld are the same, t is the nominal thickness of base material; if not, t is the nominal thickness of the thinner side of the base material;
b) As for insert-type nozzle fillet joint, t is the nominal thickness of cylinder or head; as for abutting-type fillet joint between nozzle and cylinder (or head), t is the nominal thickness of nozzle;
c) As for T-type welded joint, t is the nominal thickness of web.
4 General Requirements
4.1 Testing personnel
4.1.1 The general requirements for ultrasonic testing personnel shall meet the relevant requirements of NB/T 47013.1.
Contents of NB/T 47013.3-2015/XG1-2018
Contents
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Ultrasonic Testing Method and Quality Grading of Raw Materials or Spare Parts for Pressure Equipment
6 Ultrasonic Testing Method and Quality Grading of Welded Joint for Pressure Equipment
7 Ultrasonic Testing Method for Pressure Equipment Thickness
8 Ultrasonic Testing Method for Pressure Equipment In-service
9 Ultrasonic Testing Record and Report
Appendix A (Normative) Requirements for Electrical Performance Index of Ultrasonic Testing Instrument
Appendix B (Normative) Performance Index Requirements of Probe for Ultrasonic Testing
Appendix C (Normative) Performance Requirements of Double Crystal Normal Probe
Appendix D (Normative) Ultrasonic Angle Probe Testing Method and Acceptance Standard of Plates for Pressure Equipment
Appendix E (Normative) Ultrasonic Angle Probe Testing Method and Quality Grading of Steel Forgings for Pressure Equipment
Appendix F (Normative) Ultrasonic Angle Probe Testing Method of Austenite Steel Forgings for Pressure Equipment
Appendix G (Normative) Ultrasonic Testing Method and Quality Grading of Welding Overlay for Pressure Equipment
Appendix H (Normative) Ultrasonic Testing Method and Quality Grading of Butt Joint for Aluminum, Aluminum Alloy and Titanium Pressure Equipment
Appendix I (Informative) Ultrasonic Testing Method and Quality Grading of Austenitic Stainless Steel Butt Joints
Appendix J (Normative) Ultrasonic Testing Method for Longitudinal Butt Joints on Curved Surface of Pressure Equipment
Appendix K (Normative) Ultrasonic Testing Method for Circumferential Butt Joints on Curved Surface of Pressure Equipment
Appendix L (Normative) Ultrasonic Testing Method for Fillet Joint between the Nozzle of Pressure Equipment and Cylinder (or Head)
Appendix M (Normative) Ultrasonic Testing Methods for T-shaped Welded Joint
Appendix N (Normative) Specific Requirements for Ultrasonic Testing of Different Types of Welded Joints
Appendix O (Normative) CSK-IIIA Test Block
Appendix P (Normative) Determination of Sound Energy Transmission Loss Difference
Appendix Q (Normative) Echo Dynamic Pattern
Appendix R (Normative) Flaw Height Measurement (I) – Flaw Height Measurement by Tip Diffraction Wave Method
Appendix S (Normative) Flaw Height Measurement (II) - Flaw Height Measurement by Maximum Tip Echo Method
Appendix T (Normative) Flaw Height Measurement (III) – Flaw Height Measurement by -6dB Method
NB/T 47013.3-2015/XG1-2018, NB 47013.3-2015/XG1-2018, NB 47013.3-2015XG1-2018, NB/T47013.3-2015/XG1-2018, NB/T 47013.3, NB/T47013.3, NB47013.3-2015/XG1-2018, NB 47013.3, NB47013.3, NB47013.3-2015XG1-2018, NB 47013.3, NB47013.3
