GOST R ISO 10893-4-2014

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  ГОСТ Р ИСО 10893-4-2014

GOST R ISO 10893−4-2014 Seamless and welded steel pipes. Part 4. Penetrant monitoring for the detection of surface defects (with Amendments)

GOST R ISO 10893−4-2014

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Steel seamless and welded pipes. Part 4. Penetrant monitoring for the detection of surface defects *

Seamless and welded steel tubes. Part 4.

Liquid penetrant inspection for the detection of surface imperfections

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* Amendment. IES No. 6−2015; IES No. 7−2015.

ACS 23.040.10, 77.040.20, 77.140.75

Date of implementation 2015−03−01

Foreword

The goals and principles of standardization in the Russian Federation are established by Federal Law No. 184-FZ of December 27, 2002 «On Technical Regulation», and the rules for the application of national standards of the Russian Federation — GOST P 1.0−2004 «Standardization in the Russian Federation.

About the standard

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 October 13, 2014 No. 1314-st

4 This standard is identical to the international standard ISO 10893−4: 2011 * «Non-destructive testing of steel pipes — Part 4: Permeating liquids inspection of steel seamless and welded pipes for the detection of surface defects» (ISO 10893−4: 2011 «Non-destructive testing of steel tubes — Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections «.

The name of this standard has been changed with respect to the name of this international standard to bring it in compliance with GOST R 1.7 (item 6.2) and clarify 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 INTRODUCED FOR THE FIRST TIME


The rules of application of this standard are set 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». The relevant information, notification and texts are also posted in the public information system — on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (gost.ru)


AMENDED: Amendments published in IES No. 6−2015, ISC No. 7−2015

Amendments made by the database manufacturer

Introduction

This standard is identical to the international standard ISO 10893−4, which was prepared by the Technical Committee ISO / TC 17 «Steel», subcommittee SC 19 «Technical conditions for the supply of pipes operating under pressure."

The international standard ISO 10893−4 nullifies and replaces ISO 12095: 94, technically revised.

The international standard ISO 10893−4 consists of the following parts under the common name «Non-destructive testing of steel pipes»:

— Part 1. Automatic electromagnetic control of steel seamless and welded pipes (except for pipes obtained by submerged arc welding) for verification of tightness;

— Part 2. Automatic control by the eddy current method of steel seamless and welded pipes (except for pipes obtained by submerged arc welding) for the detection of defects;

— Part 3. Automatic control by the method of scattering magnetic flux along the entire circumference of seamless and welded pipes of ferromagnetic steel (except for pipes obtained by submerged arc welding) to detect longitudinal and (or) transverse defects;

— Part 4. Monitoring by penetrating liquids of steel seamless and welded pipes to detect surface defects;

— Part 5. Monitoring by the method of magnetic particles of seamless and welded pipes of ferromagnetic steel for the detection of surface defects;

— Part 6. Radiographic inspection of welded welded steel pipes to detect defects;

— Part 7. Digital radiographic inspection of welded steel pipes weld to detect defects;

— Part 8. Automatic ultrasonic inspection of seamless and welded steel pipes for detection of laminar defects;

— Part 9. Automatic ultrasonic testing for detection of laminar defects in the strip / sheet used for the production of welded steel pipes;

— Part 10. Automatic ultrasonic inspection of the entire circumference of seamless and welded steel pipes (other than submerged arc welding) to detect longitudinal and (or) transverse defects;

— Part 11. Automatic ultrasonic inspection of welded welded steel pipes to detect longitudinal and (or) transverse defects;

— Part 12. Automatic ultrasonic inspection of the thickness along the entire circumference of seamless and welded steel pipes (except for pipes obtained by submerged arc welding).

1 area of use

This standard specifies the requirements for conducting a capillary inspection to detect surface defects of seamless and electric welded pipes.

This standard can be used to control the surface of the entire pipe or part thereof in accordance with the product standard.

This standard can also be used to control hollow profiles.

2 Normative references

The following reference standards are necessary 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) applies.
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* Refer to the table of compliance of national standards with international standards. — Note of the database manufacturer.


ISO 3059 Non-destructive testing. Control by the method of penetrating liquids and the method of magnetic particles. Observation conditions (ISO 3059 Non-destructive testing — Penetrant testing and magnetic particle testing —

ISO 3452−1 Non-destructive testing. Method of penetrating liquids. Part 1. General principles (ISO 3452−1 Non-destructive testing — Penetrant testing — Part 1: General principles)

ISO 3452−2 Non-destructive testing. Control by the method of penetrating liquids. Part 2. Penetrant testing (ISO 3452−2 Non-destructive testing — Part 2: Testing of penetrant materials)

ISO 9712 Non-destructive testing. Qualification and attestation of personnel (ISO 9712 Nondestructive testing — Qualification and certification of NDT personnel)

ISO 11484 Steel products. The system of qualification of the employer for the personnel on non-destructive testing (ISO 11484 Steel products — Employer’s qualification system for nondestructive testing (NDT) personnel)

3 Terms and definitions

In this standard, the terms and definitions of ISO 3452−1 and ISO 11484 are used, as well as the following terms with the corresponding definitions:

3.1 pipe (tube): a long hollow product, open at both ends, of any cross-sectional shape.

3.2. Seamless pipe (seamlesstube): Tpyba made by sewing a solid billet to produce a hollow pipe, which is further processed (hot or cold) to its final dimensions.

3.3 welded tube: Tpyba 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.

3.4 The manufacturer (manufacturer): An organization that manufactures products according to the relevant standard and declares conformity of the products delivered with all applicable provisions of the relevant standard.

3.5 agreement: the contractual relationship between the manufacturer and the customer at the time of the request and order.

4 General requirements

4.1. If the product specification or the agreement between the customer and the manufacturer does not specify otherwise, then the capillary inspection of the pipes should be carried out after completion of all primary technological operations of production (rolling, heat treatment, cold and hot deformation, machining in size and preliminary dressing, etc.).

4.2. The surface of the pipe to be inspected must be cleaned of oil, grease, sand, scale or any other substances that may interfere with the conduct of the capillary inspection. The type of indications, as well as the minimum dimensions of the detected defects, depend on the technology of pipe production and the quality of the surface treatment.

4.3 Verification should only be carried out by trained operators certified 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 — For definitions of levels 1, 2 and 3, see relevant international standards, eg ISO 9712 and ISO 11484.

5 Controlling

5.1 General

5.1.1 The liquid penetrant is applied to the surface to be inspected and maintained for some time to penetrate the surface of the inspection material in the cavity. Then all excess penetrant is removed, the surface is dried and, if necessary, the developer is applied to it. The developer as a blotting paper absorbs the penetrant remaining in the cavity of the defect, and is a contrasting background for enhancing the distinguishability of indications. The penetrant contains either a color (visible under natural light) or a luminescent (visible under ultraviolet radiation) dye. The following types of indicator penetrants can be used for both of the above methods:

a) water-washable penetrants;

b) penetrants of subsequent emulsification;

c) organosmyvaemye penetrants.

The term «capillary control means» means in this standard any indicator penetrants, solvents or detergents, developers, etc. that are used in the control.

5.1.2 For each pipe or pipe section subject to capillary inspection, either a color or luminescent method with one of the three kinds of indicator penetrant should be used.

General control and capillary control technology in accordance with ISO 3059, ISO 3452−1 and ISO 3452−2 (see 5.3) should be used for monitoring.

5.2 Identifiable defects and their classification

The method of capillary inspection is an effective way of detecting defects emerging on the surface (in this section referred to as «surface defects»). Typical surface defects detected by this method are cracks, filaments, sunsets, fissures, delaminations and porosity.

Capillary control does not allow to determine the nature, shape and size of the revealed surface defects. The indicator pattern does not determine the actual size of the surface defects that caused these indications. Therefore, for capillary control, the following classification of indications should be used:

a) extended indication — indication, the length of which is three times or more exceeds the width;

(b) Round indication — an indication that is round or oval in shape, whose length exceeds the width less than three times;

c) accumulation of indications — lines or groups of indication consisting of at least three indications that can be both extended and rounded, and the distance between them does not exceed the length of the smallest indication;

d) false indications — indications that have occurred either as a result of local surface irregularities or from certain technological processes in the manufacture of pipes, for example, risks resulting from calibration or straightening.

The minimum sizes of indications that are to be considered when assessing the results of monitoring, and the corresponding acceptance levels are given in Table 1.


Table 1 — Minimum dimensions of indications to be evaluated

Acceptance level	Diameter () or length () of the minimum indication, which are subject to evaluation, mm
P1	1.5
P2	2.0
P3	3.0
P4	5.0

5.3 Control technology

Capillary inspection should be carried out in accordance with the following procedure:

a) when choosing a penetrant, it is necessary to take into account the features of the pipe surface, as well as the required sensitivity level of the control;

(b) Corrosion-resistant steel pipes should use penetrating materials with a low content of halogens (chlorine / fluorine) and sulfur;

c) the operating temperature of the capillary control should be from 10 to 50 ° C. If it is not possible to conduct capillary monitoring in the above-mentioned temperature range, the control procedure using the used flaw detection materials should be checked on a sample for testing capillary control equipment (for example, an aluminum sample with cracks after rapid cooling) at the control temperature;

d) the penetrant should be applied to the surface of the control with a brush or spray. Dip penetration is permissible for pipe sections, although this is less effective;

(e) The holding time should be between 3 and 30 minutes and should not be less than the exposure time recommended by the penetrant manufacturer;

(f) The surplus of the water-mist or post-emulsified penetrant should be removed from the surface of the water control. If necessary, removal of excess penetrant should be carried out with ultraviolet radiation. The water pressure in the device for flushing the penetrant should be about 200 kPa (2 bar) and not exceed 350 kPa (3.5 bar). The temperature of the flushing water must be below 40 ° C. The largest part of the surplus penetrant washed off by the solvent is removed with a clean and dry lint-free cloth. Then, the surface should be wiped with a white, lint-free cloth, slightly soaked in a solvent, until all traces of excess penetrant have been removed. After applying the penetrant, rinsing the surface with a solvent before using the developer is prohibited;

g) the surface after removal of excess penetrant by water can be dried by wiping it with a white, clean and dry lint-free cloth or with a jet of hot air supplied under a pressure of not more than 200 kPa (2 bar) and at a temperature not exceeding 70 ° C. After removal of the solvent, the method of natural evaporation of moisture is usually used, so other methods of drying are not used. Unless otherwise agreed between the customer and the manufacturer, the pipe temperature should not exceed 50 ° C;

h) the liquid developer is sprayed in such a way as to ensure complete coverage of the monitored area with a thin and even film. When using a powder developer, the pipe or pipe section to be inspected is immersed in a fluidized bed of a dry developer or coated with a powder developer using a manual rubber atomizer or a spray gun (conventional or electrostatic), provided that the powder is applied evenly over the entire controlled surface;

i) the development time begins immediately after the liquid developer has dried out, or immediately after application of the powder developer. Typically, the development time is equal to the penetration time and is from 5 to 30 minutes. If the indicator traces did not come to the surface during development, the development time may be more than 30 minutes;

j) the inspection of the controlled area should be carried out after the development time indicated in item i) of this paragraph necessary for the release of the penetrant from the defective areas to the developing layer is over. When applying the developer, it is recommended to observe the surface, as this helps in evaluating the results. When using a fluorescent indicator penetrant, the control should be carried out in a dark room using an ultraviolet radiation source whose brightness level does not exceed 20 lux, and the intensity of invisible ultraviolet radiation is not less than 10 W / m on the surface of the controlled area. When using a color indicator penetrant, the illumination of the surface of the monitored area during its inspection should not be less than 500 lux.

6 Assessment of indications

6.1 Depending on the maximum number of defects or the maximum permissible defect size (diameter or length), according to the data in Tables 2 and 3, there are four acceptance levels.


Table 2 — Surface of the pipe — The maximum permissible number and dimensions (diameter, length) of defects in the area of 100 mm 150 mm

Acceptance level	Nomi- wall thickness of pipe, mm	Display Type
Rounded		Extended		Accumulations
Number, pcs.	Diameter, mm	Number, pcs.	Length, mm	Number, pcs.	Total size, mm
P1	16	5	3.0	3	1.5	1	4.0
16 50	5	3.0	3	3.0	1	6.0
50	5	3.0	3	5.0	1	10.0
P2	16	8	4.0	4	3.0	1	6.0
16 50	8	4.0	4	6.0	1	12.0
50	8	4.0	4	10.0	1	20.0
P3	16	10	6.0	5	6.0	1	10.0
16 50	10	6.0	5	9.0	1	18.0
50	10	6.0	5	15.0	1	30.0
P4	16	12	10.0	6th	10.0	1	18.0
16 50	12	10.0	6th	15.0	1	25.0
50	12	10.0	6th	25.0	1	35.0

Table 3 — Welded seam — the maximum permissible number and dimensions (diameter, length) of defects in a 150 mm section 50 mm

Acceptance level	Nomi- wall thickness of pipe, mm	Display Type
Rounded		Extended		Accumulations
Number, pcs.	Diameter, mm	Number, pcs.	Length, mm	Number, pcs.	Total size, mm
P1	16	1	3.0	1	1.5	1	4.0
16	1	3.0	1	3.0	1	6.0
P2	16	2	4.0	2	3.0	1	6.0
16	2	4.0	2	6.0	1	12.0
P3	16	3	6.0	3	6.0	1	10.0
16	3	6.0	3	9.0	1	18.0
P4	16	4	10.0	4	10.0	1	18.0
16	4	10.0	4	18.0	1	27.0
Note — the width of the 50 mm section is measured along the axis of the weld.

6.2 Inspection should be done visually without using image enlarging means.

It is allowed to use methods of remote inspection, for example, using television cameras, if the manufacturer can confirm that they do not influence the acceptance criteria.

6.3 Only those indications whose dimensions are equal to or higher than those specified in Table 1 should be considered for compliance with acceptance levels. Only those indications that are formed from defects should be considered. Similar indications, formed from risks or other defects in the process, should not be taken into account. Any indication taken into account, whose dimensions exceed the acceptance level of 6.1, must be re-monitored to confirm the presence or absence of this defect. Before re-checking, surface preparation should be carried out.

6.4 The indications to be observed for capillary control in accordance with the requirements of this standard shall be evaluated and classified as follows:

a) when monitoring the entire surface or section of the pipe, an imaginary measuring area of 100 mm should be placed on the monitored surface with the largest number of indications 150 mm. Evaluation of the indication by type, quantity and size should be carried out in accordance with the data in Table 2;

b) when inspecting the weld on the monitored surface with the largest number of indications, an imaginary evaluation area of 50 mm 150 mm symmetrical about the axis of the weld, with 50 mm being applied across the axis of the weld. Evaluation of the indication by type, quantity and size should be carried out in accordance with the data in Table 3;

c) when checking the cutting surface at the ends of the pipe, extended indications of less than 6 mm in length are allowed;

d) to calculate the total size of the display cluster, it is necessary to take into account the length of the largest axis of each extended or round indication. Where the gap between adjacent indications is less than the length or diameter of the longest of the two indications, they should be treated as a single indication, and the sum of the lengths or diameters of these indications plus the gap between them is taken into account when calculating the total size.

7 Acceptance

7.1 The pipe, in the control of which there are no indications exceeding the parameters of the set acceptance level, shall be considered to have passed control.

7.2 The pipe, in the control of which the indications exceed the permissible parameters of a given acceptance level, should be considered doubtful.

7.3 One or more of the following actions should be taken to the dubious pipe, taking into account the requirements of the product standard:

a) the suspect site should be cleaned and controlled by another method. If the remaining thickness of the wall is within the permissible deviations, the pipe should be re-monitored, as indicated above. If, after repeated monitoring, the indication does not exceed the permissible parameters of the set acceptance level, the pipe shall be considered to have passed control.

Suspicious areas can be re-monitored by other non-destructive testing methods according to the agreed acceptance level between the customer and the manufacturer;

b) the suspect section of the pipe must be cut off;

c) the pipe must be considered not to have passed control.

8 Control report

If agreed, the manufacturer must submit to the customer a control protocol that must include at least the following information:

a) a reference to this standard;

b) a statement of compliance;

c) any deviation from the agreement or agreed procedures;

d) product designation, grade of steel and dimensions;

e) description of control technology;

f) a description of the acceptance level and the sample for adjustment, if applicable;

g) date of control;

h) information about the personnel who conducted the control.

Appendix YES (informative). Information on the compliance of reference international standards with the national standards of the Russian Federation (and acting as interstate standards)

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 3452−2	IDT	GOST R ISO 3452−2-2009 «Non-destructive testing — Penetrant testing — Part 2: Penetrant testing"
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.

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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, longitudinal and transverse defects
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