GOST R ISO 10893-12-2014
GOST R ISO 10893−12−2014 Seamless and welded steel pipes. Part 12. Ultrasonic method of automated control of wall thickness along the whole circumference
GOST R ISO 10893−12−2014
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
Seamless and welded steel pipes
Reel 12.
Ultrasonic method of automated control of wall thickness along the whole circumference
Seamless and welded steel tubes. Part 12. Automated full peripheral ultrasonic thickness testing
ACS 23.040.10,
77.040.20,
77.140.75
Date of implementation 2015−09−01
Foreword
1 PREPARED by the Technical Committee for Standardization of TK 357 «Steel and Cast Iron Pipes and Cylinders», Non-State Educational Institution of Additional Professional Education «Research and Training Center» Control and Diagnostics «(«Control and Diagnostics Center «) and Open Joint Stock Company» Research Institute of Pipe Industry «(OJSC» RosNITI «) on the basis of its own authentic translation into Russian of the standard specified in paragraph 4
2 was introduced by the Technical Committee for Standardization of TC 357 «Steel and Cast Iron Pipes and Cylinders"
3 APPROVED AND ENABLED The Order of the Federal Agency for Technical Regulation and Metrology of December 12, 2014 No. 2049-st
4 This standard is identical to the international standard ISO 10893−12: 2011 * «Non-destructive testing of steel pipes — Part 12: Automatic ultrasonic inspection of the thickness of welded and welded steel pipes (except for submerged arc welding)» (ISO 10893−12: 2011 «Non-destructive testing of steel tubes — Part 12: Automated full-peripheral ultrasonic thickness testing of seamless and welded (except submerged arc-welded) steel tubes».
The name of the international standard has been changed with respect to the name of this standard to be brought into conformity with GOST R 1.7 (Subsection 6.2) and clarifying the scope of application.
When applying this standard, it is recommended to use, instead of reference international standards, the corresponding national standards of the Russian Federation and interstate standards, the details of which are given in the supplementary Appendix YES
5 REPLACEMENT GOST R ISO 10543−99
The rules for the application of this standard are set out in GOST R 1.0−2012 (section 8). The information on changes to this standard is published in the annual (as of January 1 of the current year) information index «National Standards», and the official text of the amendments and amendments is published in the monthly information index «National Standards». In case of revision (replacement) or cancellation of this standard, the relevant notice will be published in the next issue of the information index «National Standards».
Introduction
This standard is identical to the international standard ISO 10893−12, which was prepared by the Technical Committee ISO / TC 17 «Steel», subcommittee SC 19 «Technical conditions for the supply of pipes operating under pressure."
International Standard ISO 10893−12 repeals and replaces ISO 10543: 93, technically revised.
1 area of use
This standard specifies the requirements for an ultrasonic method for automated control of wall thickness over the entire surface of seamless and welded steel pipes, except for pipes produced by submerged arc welding (SAW). This standard specifies the control method and the corresponding procedures for setting up the equipment.
Notes
1 Full surface inspection does not necessarily mean that 100% of the pipe surface is monitored.
2 This monitoring can be carried out simultaneously with automatic ultrasonic testing of seamless and welded steel pipes to detect stratification (see ISO 10893−8) using the same ultrasonic transducers for monitoring. In this case, the percentage of the surface of the pipe to be inspected is determined by the minimum size of the stratification in accordance with ISO 10893−8.
This standard can also be used to control the wall thickness of round hollow profiles.
This standard can be used to control the wall thickness of pipes with an outside diameter of at least 25.4 mm and a minimum wall thickness of at least 2.6 mm, unless otherwise agreed.
2 Normative references
The following reference documents * are required for the application of this standard. For dated references, only the edition cited applies, for undated references, the latest edition of the referenced document, including any amendments thereto:
ISO 5577 Non-destructive testing. Ultrasonic inspection. Dictionary (ISO 5577 Nondestructive testing — Ultrasonic inspection — Vocabulary)
ISO 9712 Non-destructive testing. Qualification and attestation of personnel (ISO 9712 Nondestructive testing — Qualification and certification of NDT personnel)
ISO 11484 Steel pressure pipes. Qualification and certification of personnel in non-destructive testing (ISO 11484 Steel products — Employer’s qualification system for nondestructive testing (NDT) personnel)
3 Terms and definitions
The terms and definitions of ISO 5577 and ISO 11484 are used in this standard, as well as the following terms with the corresponding definitions:
3.1 adjustment sample-tube (reference tube): The pipe or of the pipe used for setting purposes.
3.2 adjustment sample (reference sample): The sample (e.g., a pipe segment, plate or tape) used for setting.
NOTE The term «sample-tube» used in this standard also includes the term «configuration sample».
3.3 the pipe (tube): a long hollow product, open at both ends, of any shape in cross section.
3.4 Seamless tube: A pipe made by sewing a solid blank to produce a hollow pipe, which is then processed (hot or cold) to its final dimensions.
3.5 welded tube: A pipe made 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.
3.6 electrically pipe (electric welded tube): A pipe made in a continuous or non-continuous process, wherein the band is cold-formed into a hollow profile, and the weld is made by heating the edges by passing high current or low frequency, and pressing the edges together.
NOTE Electric current can be supplied by direct contact of the electrode or by magnetic induction.
3.7 manufacturer: An organization that manufactures products in accordance with the relevant standard and declares that the delivered products comply with all applicable provisions of the relevant standard.
3.8 agreement: Contractual relations between the manufacturer and the customer at the time of the request and order.
4 General requirements
4.1. If the product specification or agreement between the customer and the manufacturer does not specify otherwise, ultrasonic testing shall be carried out on the pipes after the completion of all primary manufacturing operations (rolling, heat treatment, cold and hot deformation, machining in size, pre-adjusting, etc. .).
4.2 Pipes should be straight enough to ensure control. The surface of the pipe must be free of foreign substances, which can interfere with the conduct of reliable control.
4.3 Verification should only be carried out by trained operators qualified in accordance with ISO 9712, ISO 11484 or equivalent documents, and under the supervision of competent personnel designated by the manufacturer (manufacturer). In the case of third party inspection, this should be agreed between the customer and the manufacturer. Control over the permission of the employer must be carried out in accordance with the written procedure. The procedure for nondestructive testing should be agreed by a specialist at level 3 and personally approved by the employer.
NOTE — The definition of levels 1, 2 and 3 is given in relevant international standards, for example in ISO 9712 and ISO 11484.
5 Control technology
5.1 The pipe must be monitored by an ultrasonic echo method with one or more piezoelectric or electromagnetic-acoustic transducers at the same time. To determine the correspondence between the pipe wall thickness and the established requirements, the introduction of an ultrasonic wave into the product must be perpendicular to the surface of the pipe.
5.2 During the inspection, the pipe and transducer block must move relative to each other in such a way that the pipe surface is controlled evenly along the spiral path along the entire length of the pipe (except for the conditions of note 2 of Section 1). Unless otherwise specified in the product specification or agreed between the manufacturer and the customer, the minimum surface coverage of the pipe during scanning shall be determined by the manufacturer in accordance with the manufacturing process, but not less than 10% of the surface area.
Note — Other scanning schemes may be used by agreement between the customer and the manufacturer.
5.3 The recommended maximum width of each transducer element or each active phased array element shall be 25 mm in any direction. However, the manufacturer can use larger transducers when calibration is possible on the tuning sample; On request, this feature must be confirmed.
5.4 The equipment shall classify the pipes as either permissible or as doubtful by means of an automatic level alarm system in combination with the marking and / or registration and / or sorting system.
6 Tuning sample-pipe
6.1 The tuning sample of the pipe (or part of the scanned tube) shall have the same nominal diameter and thickness, the same surface quality, thermal treatment and delivery conditions (eg after rolling, normalized, hardened and tempered), like controlled pipes, and must have similar acoustic properties (for example, sound speed and attenuation coefficient).
6.2 The tuning pattern of the pipe (either a treated tuning specimen, or a treated specimen, or a thick-walled steel pipe) shall, at the manufacturer’s discretion:
a) have a known area of a given thickness with an accuracy of not less than ± 0.1 mm;
b) have a treated area (s) or a specified minimum thickness, or have one zone with a minimum thickness and one zone with a thickness between the minimum and maximum limits. The thickness of the processed zones of the tuning sample of the pipe used to calibrate the ultrasonic equipment must have a tolerance of ± 0.05 mm or ± 0.2% (whichever is greater).
7 Setting up and checking the hardware settings
7.1 At the beginning of each inspection cycle, the equipment must be set up in static mode using the selected pipe alignment sample so that the thickness of the pipe sample is determined with an accuracy of at least ± 0.10 mm or ± 2% (whichever is larger), and the automatic alarm must always be triggered when the limit of the specified thickness is exceeded.
The manufacturer must demonstrate (prove) that the results of the control during the manufacturing process correspond to the results of the static adjustment.
7.2 During the inspection of the pipes during the production process, rotational and translational speeds should be selected so that the surface of the pipe is controlled in accordance with 5.2. The relative speed of movement during the inspection should not differ by more than ± 10%.
7.3 The adjustment of the equipment shall be checked at regular intervals during inspection during the manufacture of pipes of the same diameter, wall thickness and mark.
The check period for setting up the equipment should be carried out at least every 4 hours, as well as when changing the operator and at the beginning and at the end of the production cycle.
7.4 The equipment must be reconfigured if any of the settings that were used during the initial configuration will be changed.
7.5 If calibration requirements are not fulfilled when checking the setting during production control, even taking into account the additional tolerance according to 7.6, all the checked pipes from the previous verification of the setting must be re-monitored after the equipment has been reconfigured.
7.6 In order to take into account the drift of the system readings, the additional thickness tolerance of + 1% or +0.05 mm (whichever is greater), in addition to that specified in 7.1, must be taken into account during the equipment setup check in progress production control.
7.7 By agreement between the manufacturer and the customer, it should be demonstrated that with increasing speed and / or rotation speed at the used pulse frequency, equipment can detect a thickness mismatch.
8 Acceptance
8.1 Any pipe that does not trigger an automatic alarm system (clause 7.1) is considered suitable.
8.2 Any pipe that caused the activation of an automatic alarm system (clause 7.1) is indicated as doubtful or, at the discretion of the manufacturer, can be monitored repeatedly. If after two consecutive re-control operations the automatic alarm system does not operate, the pipe is considered suitable, otherwise the pipe is considered doubtful.
8.3 For doubtful pipes, taking into account the requirements of the product standard, one or more of the following operations should be undertaken:
a) if the manufacturer can prove that the condition for triggering an automatic alarm system arises from the presence of minor defects, for example the accumulation of inclusions, and not because of the extensive defects that cause the recognized pipe to be defective, the pipe is considered suitable;
(b) If possible, a suspect area of the pipe that is thicker than the upper tolerance limit may be treated in an appropriate manner. Having convinced that the remaining thickness of the wall is within the established tolerances, the pipe is considered suitable;
c) the suspect area should be cut off;
d) the pipe is considered unfit.
9 Control report
If agreed, the manufacturer shall submit to the customer a control protocol that shall include at least the following information:
a) a reference to this standard;
b) a statement of eligibility;
c) any deviation from the agreement or agreed procedures;
d) product designation, grade of steel and dimensions;
e) description of control technology;
f) the method used to calibrate the equipment;
g) a description of the sample for adjustment;
h) the date of the test;
i) data of the control operator.
Appendix YES (informative). Information on the Compliance of Reference International Standards with the National Standards of the Russian Federation
Appendix YES
(reference)
Table YES.1
| Designation of the reference international standard |
Degree of conformity |
The designation and name of the relevant national standard |
| ISO 5577 |
IDT |
GOST R ISO 5577−2009 «Non-destructive testing — Ultrasonic inspection — Dictionary" |
| ISO 9712 |
IDT |
GOST R ISO 9712−2009 «Non-destructive testing — Certification and certification of personnel" |
| ISO 11484 |
IDT |
Project GOST R ISO 11484 (IDT) «Steel products: the system for assessing the employer’s qualifications of personnel performing non-destructive testing" |
| NOTE This table uses the following symbol for the degree of conformity of the standards: — IDT — identical standards. | ||
| UDC 621.774.08: 620.179.16: 006.354 | ACS 23.040.10, | |
| 77.040.20, | ||
| 77.140.75 | ||
| Keywords: steel pipes, non-destructive testing, ultrasonic method, automatic control | ||
