GOST R ISO 10893-3-2016
GOST R ISO 10893−3-2016 seamless steel Tubes and welded. Part 3. The automated control method of magnetic flux leakage across the surface of pipes made of ferromagnetic steel for detection of longitudinal and (or) transverse defects
GOST R ISO 10893−3-2016
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
Seamless steel tubes and welded
Part 3
The automated control method of magnetic flux leakage across the surface of pipes made of ferromagnetic steel for detection of longitudinal and (or) transverse defects
Seamless and welded steel tubes. Part 3. Automated full peripheral flux leakage testing of ferromagnetic tubes for the detection of longitudinal and/or transverse imperfections
OKS 23.040.10
77.040.20
77.140.75
Date of introduction 2016−11−01
Preface
1 PREPARED by the Technical Committee for standardization TC 357 «Steel and cast iron pipes and cylinders», non-state educational institution of additional professional education «Scientific-training center «testing and diagnostics» («RTC «testing and diagnostics») and Open joint stock company «Russian scientific research Institute of pipe industry» (JSC «RosNITI») on the basis of their own translation into the Russian language the English language version of the standard specified in paragraph 4
2 SUBMITTED by the Technical Committee for standardization TC 357 «Steel and cast iron pipes and cylinders»
3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology of April 1, 2016 N 235-St
4 this standard is identical to international standard ISO 10893−3:2011* «non-destructive testing of steel tubes. Part 3. Automatic control method of magnetic flux leakage around the entire circumference of seamless and welded pipes made of ferromagnetic steel (except tubes produced by arc welding under flux) for the detection of longitudinal and/or transverse defects» («Non-destructive testing of steel tubes — Part 3: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded,) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections», IDT).
An international standard developed by ISO Technical Committee ISO/TC 17 «Steel», Subcommittee SC 19 «Technical delivery conditions for pipes working under pressure».
The name of this standard changed with respect to names specified international standard to link with the names adopted in the current national set of standards.
In applying this standard it is recommended to use instead of the referenced international standards corresponding national standards of the Russian Federation, details of which are given in Appendix YES
5 INTRODUCED FOR THE FIRST TIME
Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards», and the text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the monthly index «National standards».
Introduction
International standard ISO 10893−3 cancels and replaces the technically revised ISO 9402:1989 ISO 9598:1989.
In the complex of ISO 10893 under the name «non-destructive testing of steel tubes» includes:
— part 1. Automatic electromagnetic inspection of steel seamless and welded tubes (except tubes produced by arc welding under flux) for verification of the tightness;
— part 2. Automatic inspection eddy current seamless and welded steel pipes (excluding pipes obtained by arc welding under flux) for detection of defects;
— part 3. Automatic control method of magnetic flux leakage around the entire circumference of seamless and welded pipes made of ferromagnetic steel (except tubes produced by arc welding under flux) for the detection of longitudinal and/or transverse defects;
— part 4. The control method of penetrating liquids seamless and welded steel tubes for the detection of surface defects;
— part 5. Control method of magnetic particles seamless and welded pipes made of ferromagnetic steel for detecting surface defects;
— part 6. Radiographic testing of the weld of welded steel tubes for detection of defects;
— part 7. Digital radiographic testing of the weld of welded steel tubes for detection of defects;
— part 8. Automatic ultrasonic testing of seamless and welded steel tubes for the detection of laminations;
— part 9. Automatic ultrasonic testing for the detection of laminations in the strip/sheet metal used to manufacture welded steel pipes;
— part 10. Automatic ultrasonic testing along the whole circumference of seamless and welded steel pipes (excluding pipes obtained by arc welding under flux) for the detection of longitudinal and/or transverse defects;
— part 11. Automatic ultrasonic testing of the weld of welded steel tubes for the detection of longitudinal and/or transverse defects;
— part 12. Automatic ultrasonic control of thickness around the circumference of seamless and welded steel pipes (excluding pipes obtained by arc welding under flux).
1 Scope
This standard specifies requirements for the automated control method of magnetic flux leakage seamless and welded (except pipes, arc-welded submerged arc welding) pipes made of ferromagnetic steel for detection of longitudinal and (or) transverse defects.
If the order is not specified, this standard applies to detect mainly longitudinal defects.
This standard applies to the testing of tubes with external diameter not less than 10 mm.
This standard can be applied for control of the hollow profiles.
2 Normative references
For the application of this standard requires the following referenced documents are*. For undated references, use the latest edition of the referenced document, including all changes:
ISO 9712 non-destructive testing. Qualification and certification of personnel (ISO 9712 Non-destructive testing — Qualification and certification of NDT personnel)
ISO 11484 steel Products. The system of training for the employer personnel for non-destructive testing (ISO 11484 Steel products — Employer''s qualification system for non destructive testing (NDT) personnel)
3 Terms and definitions
This standard applies the terminology of ISO 11484 and the following terms with respective definitions:
3.1 calibration reflector (reference standard): Reflector to configure the non-destructive testing equipment (e.g. hole, notches etc.).
3.2 adjusting sample tube (reference tube): Tube or pipe used for the settings.
3.3 configuration sample (reference sample): Sample (e.g., a segment of the pipe, coil or sheet) used for configuration.
Note — the Term «sample tube» used in this standard, also includes the term «configuration model».
3.4 pipe (tube) Hollow long product, open at both ends, of any shape in cross section.
3.5 seamless pipe (seamless tube): Tube, fabricated by sewing of the solid billet to obtain a hollow pipe in which they are further processed (hot or cold) to its final dimensions.
3.6 welded tube (welded tube): Pipe manufactured by forming a hollow profile from a flat product and welding adjacent edges together, which after welding can be further processed (hot or cold) to its final dimensions.
3.7 the manufacturer (manufacturer): Organization that manufactures products in accordance with the relevant standards and States the conformity of the delivered products with all applicable provisions of the relevant standard.
3.8 agreement (agreement): a Contractual relationship between the manufacturer and the customer at the time of enquiry and order.
4 General requirements
4.1 If the specification for the products or the agreement between the customer and the manufacturer do not stipulate otherwise, the control method of magnetic flux leakage needs to be carried out on tubes after completion of all primary technological operations of production (rolling, heat treatment, cold and hot deformation, processing size, pre-edits, etc.).
4.2 the Pipe shall be sufficiently straight to ensure the possibility of control. The pipe surface must be free from foreign matter, which may affect the testing results.
4.3 Control should only be undertaken by trained operators, qualified in accordance with ISO 9712, ISO 11484 or equivalent documents and under the supervision of competent personnel appointed by the manufacturer (the manufacturer). In case of inspection by a third party this must be agreed between the purchaser and the manufacturer. Control by permission of the employer must be conducted in accordance with written procedure. The procedure of nondestructive testing must be coordinated by a specialist 3 level, and personally approved by the employer.
Note — the Definition of levels 1, 2 and 3 to watch in relevant international standards, e.g. ISO 9712 and ISO 11484.
5 control Technology
5.1 Pipe must be monitored for the detection of longitudinal defects (see figure 1), and (or) by agreement between the manufacturer and the customer of transverse defects (see figure 2) by the method of magnetic flux leakage. Restrictions on the thickness of the tube wall is unknown; the data to limit the field of application of the method is given in Appendix A.
Figure 1 — Simplified block diagram of the determination of longitudinal defects using magnetic flux leakage
Figure 2 — Simplified scheme for determining the transverse defects using magnetic flux leakage
At both ends of the pipe can stay reprocentralen short sections that need to be controlled in accordance with the requirements of the specifications for the products.
5.2 During the monitoring of pipe and unit converters must move relative to each other so that the entire surface of the pipe were scanned. The relative scanning speed control process should not change by more than ± 10%.
5.3 Maximum width of any of the transducers along the largest dimension of the detected defect shall be 30 mm.
5.4 the Equipment must classify the pipe as fit or as questionable with an automated system сигнализацииопревышенииуровнявсочетаниисмаркировкойи (or) sorting system.
