CN116930327A - Nuclear power plant ultrasonic inspection defect roughness influence compensation test process - Google Patents
Nuclear power plant ultrasonic inspection defect roughness influence compensation test process Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 213
- 230000007547 defect Effects 0.000 title claims abstract description 183
- 238000007689 inspection Methods 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000008569 process Effects 0.000 title claims abstract description 46
- 238000005516 engineering process Methods 0.000 claims abstract description 37
- 238000003466 welding Methods 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 20
- 230000003746 surface roughness Effects 0.000 claims abstract description 20
- 239000000523 sample Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
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- 239000000126 substance Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 6
- 238000009659 non-destructive testing Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The application relates to a defect roughness influence compensation test process for ultrasonic inspection of a nuclear power plant, which comprises the following steps: selecting a parent metal of a main device of a nuclear power plant, a typical part on a welding line and the like as a test object; determining a parent metal of the test piece and related welding requirements according to the test object, and preparing the test piece; preparing a plurality of groups of defects with different sizes on a test piece; respectively adopting a plurality of groups of different ultrasonic inspection parameters to carry out ultrasonic inspection test work on a plurality of groups of defects; and (5) formulating a defect roughness influence compensation table for ultrasonic inspection of the main equipment of the nuclear power plant. By comprehensively and respectively carrying out ultrasonic inspection on a plurality of groups of defects by adopting a plurality of groups of different ultrasonic inspection parameters, the influence result of the surface roughness of the defects on the defect echo can be obtained more comprehensively, so that the method is used for guiding the development of ultrasonic inspection technology of main equipment of a nuclear island, verifying the feasibility of inspection technology, ensuring the reliability of nondestructive inspection of key equipment and parts of a nuclear power plant and ensuring the integrity of the equipment.
Description
Technical Field
The application relates to the technical field of nondestructive testing, in particular to a defect roughness influence compensation test process for ultrasonic inspection of a nuclear power plant.
Background
The requirements of high-reliability nondestructive testing are provided for guaranteeing the construction quality of main equipment of a nuclear power plant and foreign nuclear power supervision departments. The inspection method adopted by the high-reliability nondestructive inspection is mainly ultrasonic inspection (UT), the adopted technology is required to be supplemented by other nondestructive inspection technologies such as a Tandem (serial ultrasonic inspection technology), a PAUT (phased array ultrasonic inspection technology) and the like besides a pulse reflection method required by RCC-M (pressurized water reactor nuclear island mechanical equipment design and construction rule)/ASME (boiler and pressure vessel specification), part of the technologies are not completely incorporated into an RCC-M and ASME specification system, the domestic nuclear power industry has no mature application experience, and the requirements are far higher than the requirements of the current domestic general nondestructive inspection based on the RCC-M/ASME specification (including distinguishing smooth defects and rough defects, considering the influence of defect inclination angles and rotation angles, higher sensitivity requirements and the like).
The domestic nuclear power industry adopts nondestructive testing requirements based on RCC-M/ASME specifications, and as the main equipment of the nuclear power plant has no high-reliability nondestructive testing practical experience and has no support of basic data of related high-reliability nondestructive testing, especially the influence of defect surface roughness on defect echo. Therefore, simulation analysis or actual measurement data cannot be compensated, real data of a test cannot be obtained, and the lack of a surface roughness compensation curve is caused to guide development of an ultrasonic inspection process of a main device of a nuclear power plant. There are major limitations in the support of high reliability non-destructive inspection demonstration of nuclear power plant masters and structural integrity analysis evaluation of the associated masters.
Disclosure of Invention
Based on this, it is necessary to support the relevant high-reliability nondestructive testing problem for the lack of basic data of the influence of the defect surface roughness on the defect echo of the main equipment of the nuclear power plant, and provide an ultrasonic inspection defect roughness influence compensation test process, wherein the steps of the ultrasonic inspection defect roughness influence compensation test process include:
selecting typical parts such as parent metal, welding line and the like of main equipment of a nuclear power plant as test objects;
determining a parent metal of a test piece and related welding requirements according to the test object, and preparing the test piece;
preparing a plurality of groups of defects with different sizes on the test piece;
and respectively adopting a plurality of groups of different ultrasonic inspection parameters to carry out ultrasonic inspection test work on the plurality of groups of defects.
According to the ultrasonic inspection defect roughness influence compensation test process, the main base material of the main equipment of the nuclear power plant and the typical part with defects on the welding line are selected as test objects, and the base material of the test piece to be prepared and the related welding requirements are determined according to the test objects, so that the prepared test piece has the characteristics of the main base material of the main equipment of the nuclear power plant and the welding line structure. And preparing a plurality of groups of defects with different sizes on the test piece, wherein the plurality of groups of defects are respectively arranged at different positions of the test piece, and the roughness of the defects prepared on the test piece is specific. Aiming at a plurality of groups of defects on the test piece, carrying out ultrasonic testing operation by adopting a plurality of groups of different ultrasonic testing parameters, and obtaining the influence result of the surface roughness of the defects on the echo of the defects. Through the process steps, the defects with certain roughness and different positions and sizes can be prepared on the test piece at the same time, so that the ultrasonic inspection is carried out on the defects by adopting the ultrasonic inspection parameters comprehensively and respectively, the response result of the different defects under the certain roughness can be obtained, and the influence result of the surface roughness of the defects on the defect echo and the basic data for supporting the related high-reliability nondestructive inspection more comprehensively are obtained. Therefore, the method can be used for guiding the development of ultrasonic inspection technology of main equipment of the nuclear island, verifying the feasibility of inspection technology, ensuring the reliability of nondestructive inspection of key equipment and parts of the nuclear power plant and ensuring the integrity of the equipment. The method is directly used for guiding the development of ultrasonic inspection process of main equipment of the nuclear island, further ensures the reliability of nondestructive inspection of key equipment and parts of the nuclear power plant, and ensures the integrity and safety of the equipment.
In some embodiments, the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises:
determining a parent metal of a test piece and related welding requirements according to the test object, wherein the step of preparing the test piece comprises the steps of preparing two test pieces;
the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: the defects prepared on both of the test pieces had different surface roughness.
In some embodiments, the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises: the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: preparing a plurality of groups of defects with the same height and width and different inclination angles on the test piece, and preparing a plurality of groups of defects with the same height and width and different inclination angles on the test piece.
In some embodiments, the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises:
the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: ensuring that the positions of defects prepared on the test piece cover all positions with defects on a parent metal or a welding line of the main equipment of the nuclear power plant.
In some embodiments, the step of ultrasonically inspecting the nuclear power plant for defect roughness effects further comprises:
the step of carrying out ultrasonic inspection test work by adopting a plurality of groups of different ultrasonic inspection parameters for the plurality of groups of defects comprises the following steps of:
determining an adopted ultrasonic inspection technology, wherein the ultrasonic inspection technology comprises a conventional ultrasonic inspection method, a serial ultrasonic technology and an ultrasonic phased array technology;
respectively carrying out ultrasonic inspection test work on the plurality of groups of defects by adopting a plurality of ultrasonic inspection technologies;
when each ultrasonic inspection technology is adopted to carry out ultrasonic inspection test work on the plurality of groups of defects, a plurality of groups of different ultrasonic inspection parameters are adopted respectively.
In some embodiments, the step of ultrasonically inspecting the nuclear power plant for defect roughness effects further comprises:
in the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, the ultrasonic inspection parameters comprise an ultrasonic beam wave pattern and an ultrasonic probe angle.
In some embodiments, the step of ultrasonically inspecting the nuclear power plant for defect roughness effects further comprises:
in the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, the ultrasonic beam wave mode is transverse wave and longitudinal wave, and the angle of the ultrasonic probe comprises 0 degree, 45 degrees, 60 degrees, 70 degrees and the like.
In some embodiments, the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises:
before the step of preparing the test piece, the test piece is subjected to ultrasonic inspection, so that no defects with equivalent size in a specific range affecting the transmission of ultrasonic sound beams exist in the test piece.
In some embodiments, the ultrasonic inspection defect roughness impact compensation test process further comprises:
before the step of preparing the test piece, checking the relevant preparation requirements of the test piece, including raw material inspection, machining, welding and the like, and checking requirements including product chemical composition inspection, raw material performance test, nondestructive inspection and the like, so as to ensure consistency with the requirements of the main equipment of the nuclear power plant.
In some embodiments, the step of ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises:
after the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, a compensation table for the ultrasonic inspection defect roughness influence of the main equipment of the nuclear power plant is formulated according to an experimental result and a curve fitting method;
and (5) making a defect surface roughness compensation curve for ultrasonic inspection of the main equipment of the nuclear power plant.
Drawings
Fig. 1 is a schematic flow chart of a process for compensating for defect roughness effects in ultrasonic inspection of a nuclear power plant according to an embodiment of the present application.
FIG. 2 is a schematic diagram of a plurality of groups of defects prepared on a test piece according to an embodiment of the present application.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a front view of fig. 2.
FIG. 5 is a cross-sectional view of the ultrasonic test at A-A of FIG. 3.
Fig. 6 is a cross-sectional view of the ultrasonic test at B-B of fig. 3.
Reference numerals:
a test piece 10; a defect 20.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Referring to fig. 1 to 6, fig. 1 is a schematic flow chart illustrating a process for compensating for the influence of the defect roughness in an ultrasonic inspection of a nuclear power plant according to an embodiment of the present application, and the steps of the process for compensating for the influence of the defect roughness in an ultrasonic inspection of a nuclear power plant according to an embodiment of the present application include: s10, selecting typical parts such as parent metal, welding line and the like of main equipment of a nuclear power plant as test objects; s20, determining a parent metal of the test piece 10 and related welding requirements according to a test object, and preparing the test piece 10; s30, preparing a plurality of groups of defects 20 with different sizes on the test piece 10; s40, carrying out ultrasonic inspection test work on a plurality of groups of defects 20 by adopting a plurality of groups of different ultrasonic inspection parameters.
According to the nuclear power plant ultrasonic inspection defect roughness influence compensation test process, the main base material of the main equipment of the nuclear power plant, the typical parts such as the welding line and the like are selected as test objects, and the relative welding requirements of the base material or the welding line of the test piece 10 to be prepared are determined according to the test objects, so that the prepared test piece 10 has the characteristics of the base material and the welding line structure of the main equipment of the nuclear power plant. A plurality of groups of defects 20 with different sizes are prepared on the test piece 10, the plurality of groups of defects 20 are respectively arranged at different positions of the test piece 10, and the roughness of the defects 20 prepared on the test piece 10 is specific. Aiming at a plurality of groups of defects 20 on the test piece 10, carrying out ultrasonic testing operation by adopting a plurality of groups of different ultrasonic testing parameters, and obtaining the influence result of the surface roughness of the defects 20 on the defect echo. Through the above process steps, since a plurality of groups of defects 20 with certain roughness and different positions and sizes can be prepared on the test piece 10 at the same time, a plurality of groups of different ultrasonic inspection parameters can be adopted to carry out ultrasonic inspection on a plurality of groups of defects 20 comprehensively and respectively, and response results of different defects 20 under certain roughness are obtained, so that the influence results of the surface roughness of the defects 20 on defect echoes are obtained more comprehensively, and the basic data of the related high-reliability nondestructive inspection of the support is obtained more comprehensively. Therefore, the method can be directly used for guiding the development of ultrasonic inspection technology of main equipment of the nuclear island, verifying the feasibility of inspection technology, ensuring the reliability of nondestructive inspection of key equipment and parts of the nuclear power plant and ensuring the integrity of the equipment.
In some embodiments, by combining the main parent metal and the structural characteristics of the welding seam of the main equipment of the nuclear power plant, a typical part is selected as a test piece prepared by a test object, and the test piece can be simply a parent metal such as low alloy steel, or can be prepared into a corresponding welding seam according to the welding seam structure on the parent metal, such as a butt welding seam of the low alloy steel or a welding seam of a dissimilar metal of the low alloy steel and stainless steel.
In some embodiments, the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises: determining a base material of the test piece 10 and related welding requirements according to a test object, wherein the step of preparing the test piece 10 comprises the steps of preparing two test pieces 10; the step of preparing a plurality of sets of differently sized defects 20 on the test pieces 10 includes the steps of preparing the defects 20 on two test pieces 10 with different surface roughness.
The two test pieces 10 are prepared, the same multiple groups of defects 20 are arranged on the two test pieces 10, and the defects 20 prepared on the two tests respectively have different roughness, so that multiple groups of different ultrasonic inspection parameters can be adopted to carry out ultrasonic inspection test work on the defects 20 with the two groups of different roughness, thus the obtained influence results of the surface roughness of the two groups of different defects 20 on the defect echo are enriched in test data, and the high-reliability nondestructive inspection demonstration of the main equipment of a nuclear power plant and the support of structural integrity analysis and evaluation of related main equipment are further improved.
In this example, two different test pieces 10 were prepared with a roughness of 3.2 μm and 250 μm, respectively.
In some embodiments, the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises: the step of preparing a plurality of sets of differently sized defects 20 on the test piece 10 includes: multiple groups of defects 20 having the same height and width and different inclination angles are prepared on the test piece 10, and multiple groups of defects 20 having the same height and width and different inclination angles are prepared on the test piece 10.
Each group of defects 20 prepared on the test piece 10 has the same height and width, and different inclination angles are respectively arranged among the groups of defects 20. Thereby obtaining the result of ultrasonic inspection of the defects with different inclination angles. And the inclination angles of the defects 20 of each group are the same, and the defects 20 of the groups respectively have different heights and widths, so that ultrasonic detection results of the defects with different sizes are obtained. By controlling the size and the inclination angle of the plurality of groups of defects 20, when the ultrasonic inspection technology is adopted to detect and develop the test on the plurality of groups of defects 20, the defects 20 with various working conditions can be detected on the test piece 10 at the same time, and the integrity and the safety of the main equipment of the nuclear power plant are ensured.
As shown in fig. 2 and 4, in the present embodiment, the heights of the defects 20 in each group are 5mm, 10mm and 15mm, respectively, and each group of defects 20 includes a plurality of defects 20 having the same height and the same width but different positions, so that the ultrasonic inspection technique can be adopted to perform tests on different roughness (3.2 μm and 250 μm), different heights (5 mm, 10mm and 15 mm), and different phase defects 20 (beam-defect normal angles—0 °, 5 °, 10 °, 15 °, 20 ° and 25 °), so as to obtain more comprehensive data of the influence of the surface roughness of the defect 20 on the defect echo, thereby enriching the basic data of the support-related high-reliability nondestructive test. The depth of the defects prepared on the test piece is at least 10mm, and the distance from the edge of the test piece to the defects is at least 20mm.
In some embodiments, the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further includes the steps of preparing a plurality of sets of differently sized defects 20 on the test piece 10 including: ensuring that the position of the defect 20 prepared on the test piece 10 covers all parts of the defect 20 on the parent metal or weld joint of the main equipment of the nuclear power plant.
Specifically, the specification of the parent metal or the weld of the test piece 10 corresponds to or is larger than the specification of the parent metal or the weld of the selected main equipment of the nuclear power plant, so that the defect 20 prepared on the test piece 10 can cover all positions on the parent metal and the weld of the main equipment of the nuclear power plant, where the defect 20 possibly exists, so that after the defect 20 on the test piece 10 is subjected to ultrasonic detection, the obtained experimental data can be directly used for guiding the development of an ultrasonic inspection process of the main equipment of the nuclear power plant.
As shown in fig. 2 to 4, in the present embodiment, artificial defects with different surface roughness are formed on the test piece, the test piece material is 18MND5, and the test piece specification is 600mm (length) 300 mm (width) 220mm (height)
In some embodiments, the step of ultrasonically inspecting the defect roughness effects compensation test process in the nuclear power plant further includes the step of performing an ultrasonic inspection test job with each of the plurality of sets of defects 20 using a plurality of different ultrasonic inspection parameters, including: determining an adopted ultrasonic inspection technology, wherein the ultrasonic inspection technology comprises a conventional ultrasonic inspection method, a serial ultrasonic technology and an ultrasonic phased array technology; performing ultrasonic inspection test work on a plurality of groups of defects 20 by adopting a plurality of ultrasonic inspection technologies; when each ultrasonic inspection technology is adopted to carry out ultrasonic inspection test work on a plurality of groups of defects 20, a plurality of groups of different ultrasonic inspection parameters are adopted respectively.
The conventional ultrasonic inspection method, the serial ultrasonic and the ultrasonic phased array technology are selected as the ultrasonic inspection technology for detecting the plurality of groups of defects 20 on the test piece 10, the ultrasonic inspection technology to be adopted is determined according to the actual condition of the test piece 10, the ultrasonic inspection method, the serial ultrasonic and the ultrasonic phased array technology are respectively adopted for the plurality of groups of defects 20 in sequence, and the defects 20 are detected by applying a plurality of inspection technologies so as to further enrich data and improve the reliability of experimental results.
In other embodiments, other ultrasonic inspection techniques may be used to inspect the defect using different parameters to yield a result.
In some embodiments, the step of ultrasonically inspecting the nuclear power plant for defect roughness effects further comprises: in the step of performing an ultrasonic inspection test operation on the test piece 10 using different ultrasonic inspection parameters, the ultrasonic inspection parameters include an ultrasonic beam pattern and an ultrasonic probe angle.
Different ultrasonic inspection technologies respectively adopt different ultrasonic beam waveforms and different ultrasonic probe angles for detection. Specifically, each ultrasonic inspection method adopts different ultrasonic probe angles by controlling the acoustic beam wave pattern; or controlling the angle of the ultrasonic probe, detecting the defects 20 on the test piece 10 by adopting different acoustic beam waveforms, and obtaining a plurality of groups of ultrasonic echo response data, thereby further ensuring the comprehensiveness of the data obtained after ultrasonic detection of each group of defects 20.
In some embodiments, the step of performing the ultrasonic inspection test process by using different ultrasonic inspection parameters on the test piece 10 further includes the step of performing the ultrasonic inspection test process by using ultrasonic inspection defect roughness of the nuclear power plant, wherein the ultrasonic beam modes are transverse waves and longitudinal waves, and the ultrasonic probe angles include 0 °, 45 °, 60 °, 70 °, and the like.
On the premise that the ultrasonic beam wave pattern is set as transverse waves, the defects 20 on the test piece 10 are inspected by adopting ultrasonic probe angles of 0 degrees, 45 degrees, 60 degrees, 70 degrees and the like in sequence, and then on the basis that the ultrasonic beam wave pattern is set as longitudinal waves, the defects 20 on the test piece 10 are inspected by adopting ultrasonic probe angles of 0 degrees, 45 degrees, 60 degrees, 70 degrees and the like in sequence. And controlling the angle of the ultrasonic probe, and checking by adopting different acoustic wave beam patterns. Taking a general detection technology of a 45-degree ultrasonic probe as an example: tests are carried out on different roughness (3.2 μm and 250 μm), different heights (5 mm, 10mm and 15 mm) and different phase defects 20 (beam-defect normal angles of 0 °, 5 °, 10 °, 15 °, 20 ° and 25 °) by using different beam modes (transverse wave or longitudinal wave), different frequencies (2 MHz and 4 MHz), and relevant test results are recorded.
Table 1 45 ° probe defect 20 roughness acoustic characteristics test table (example)
According to the test table for testing the acoustic characteristics of the defect roughness of the 45-degree probe, the defects 20 are sequentially tested by respectively adopting different parameter arrangement combinations according to groups, and ultrasonic echo responses of the defects 20 under the conditions of different roughness, different frequencies and different sound beam-defect normal angles are obtained. And through controlling the parameter, can carry out diversified inspection to defect 20 to abundant data improves the reliability that adopts nondestructive test technique to carry out nondestructive test to nuclear power plant key equipment and part.
As shown in fig. 5, an ultrasonic inspection example is shown when the angle of the ultrasonic probe, i.e., the R angle, is 45 degrees, and the included angle between the sound beam and the normal line of the defect is 0 degrees, i.e., the M angle is 90 degrees. As shown in fig. 6, an ultrasonic inspection example is shown in which the angle of the ultrasonic probe, i.e., the R angle, is 45 degrees, and the beam-defect normal angle is 5 degrees, i.e., the N angle is 85 degrees. So as to distinguish the position of the defect of the corresponding tilt angle examined by the beam-defect normal angle.
In some embodiments, the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further includes ultrasonic inspection of the test piece 10 prior to the step of preparing the test piece 10, ensuring that no defects 20 of a particular range of equivalent sizes exist within the test piece 10 that impact propagation of ultrasonic sound beams. And the related preparation requirements of the inspection test piece 10 including raw material inspection, machining, welding, etc., and inspection requirements including product chemical composition inspection, raw material performance test, nondestructive inspection, etc., ensuring compliance with the requirements of the main equipment of the nuclear power plant.
Before the test piece 10 is adopted to carry out ultrasonic testing on a plurality of groups of defects 20 on the test piece 10 to obtain a test, the ultrasonic testing is carried out on the test piece 10, so that the defect 20 with the equivalent size in a specific range, which influences the propagation of ultrasonic sound beams, is not existed in the test piece 10, and the factors influencing the test result are avoided. Meanwhile, the preparation requirement and the inspection requirement of the test piece 10 are kept consistent with those of the main equipment of the nuclear power plant, and the reliability of data is guaranteed.
In some embodiments, after the step of performing ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, the step S50 is to formulate a nuclear power plant main equipment ultrasonic inspection defect roughness influence compensation table according to the experimental result and in combination with a curve fitting method; and (5) preparing a surface roughness compensation curve of the defect 20 of the ultrasonic inspection of the main equipment of the nuclear power plant.
And an ultrasonic inspection defect roughness influence compensation table is made according to experimental results, so that simulation analysis or actual measurement data can be compensated. And (3) according to the formulated ultrasonic inspection defect roughness influence compensation table, formulating a surface roughness compensation curve of the ultrasonic inspection defect 20 of the main equipment of the nuclear power plant. Because the ultrasonic inspection is carried out on each parameter of different ultrasonic inspection and different parameters of a plurality of groups of different defects 20 on the test piece 10, the test result is the real data aiming at the defects 20 on the main equipment of the nuclear power station, so that the simulation analysis or the actual measurement data can be compensated. And by making a compensation curve, the test results under different parameters can be conveniently and intuitively observed. Therefore, the method can support relevant high-reliability nondestructive testing, and provides support for high-reliability nondestructive testing demonstration of the main equipment of the nuclear power plant and structural integrity analysis and evaluation of the relevant main equipment.
Aiming at the problems of major limitations in the high-reliability nondestructive testing demonstration of the main equipment of the nuclear power plant and the support of structural integrity analysis and evaluation of related main equipment, the application establishes a surface roughness test scheme of the typical weld joint ultrasonic testing defect 20 of the main equipment of the nuclear power plant and an ultrasonic testing defect 20 surface roughness compensation curve.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process is characterized by comprising the following steps of:
selecting typical parts such as parent metal, welding line and the like of main equipment of a nuclear power plant as test objects;
determining a parent metal of a test piece and related welding requirements according to the test object, and preparing the test piece;
preparing a plurality of groups of defects with different sizes on the test piece;
and respectively adopting a plurality of groups of different ultrasonic inspection parameters to carry out ultrasonic inspection test work on the plurality of groups of defects.
2. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process of claim 1, wherein the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises:
determining a parent metal of a test piece and related welding requirements according to the test object, wherein the step of preparing the test piece comprises the steps of preparing two test pieces;
the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: the defects prepared on both of the test pieces had different surface roughness.
3. The ultrasonic inspection defect roughness impact compensation test process of claim 2, wherein the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises: the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: preparing a plurality of groups of defects with the same height and width and different inclination angles on the test piece, and preparing a plurality of groups of defects with the same height and width and different inclination angles on the test piece.
4. The ultrasonic inspection defect roughness impact compensation test process of claim 3, wherein the ultrasonic inspection defect roughness impact compensation test process of the nuclear power plant further comprises:
the step of preparing a plurality of groups of defects of different sizes on the test piece comprises the following steps: ensuring that the positions of defects prepared on the test piece cover all positions with defects on a parent metal or a welding line of the main equipment of the nuclear power plant.
5. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process of claim 1, wherein the step of the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises:
the step of carrying out ultrasonic inspection test work by adopting a plurality of groups of different ultrasonic inspection parameters for the plurality of groups of defects comprises the following steps of:
determining an adopted ultrasonic inspection technology, wherein the ultrasonic inspection technology comprises a conventional ultrasonic inspection method, a serial ultrasonic technology and an ultrasonic phased array technology;
respectively carrying out ultrasonic inspection test work on the plurality of groups of defects by adopting a plurality of ultrasonic inspection technologies;
when each ultrasonic inspection technology is adopted to carry out ultrasonic inspection test work on the plurality of groups of defects, a plurality of groups of different ultrasonic inspection parameters are adopted respectively.
6. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process of claim 5, wherein the step of the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises:
in the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, the ultrasonic inspection parameters comprise an ultrasonic beam wave pattern and an ultrasonic probe angle.
7. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process of claim 6, wherein the step of the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises:
in the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, the ultrasonic beam wave mode is transverse wave and longitudinal wave, and the angle of the ultrasonic probe comprises 0 degree, 45 degrees, 60 degrees, 70 degrees and the like.
8. The nuclear power plant ultrasonic inspection defect roughness impact compensation test process of claim 1, wherein the nuclear power plant ultrasonic inspection defect roughness impact compensation test process further comprises:
before the step of preparing the test piece, the test piece is subjected to ultrasonic inspection, so that no defects with equivalent size in a specific range affecting the transmission of ultrasonic sound beams exist in the test piece.
9. The ultrasonic inspection defect roughness impact compensation test process of claim 8, wherein the ultrasonic inspection defect roughness impact compensation test process further comprises:
before the step of preparing the test piece, checking the relevant preparation requirements of the test piece, including raw material inspection, machining, welding and the like, and checking requirements including product chemical composition inspection, raw material performance test, nondestructive inspection and the like, so as to ensure consistency with the requirements of the main equipment of the nuclear power plant.
10. The ultrasonic inspection defect roughness impact compensation test process of claim 1, wherein the step of ultrasonic inspection defect roughness impact compensation test process of nuclear power plant further comprises:
after the step of carrying out ultrasonic inspection test work on the test piece by adopting different ultrasonic inspection parameters, a compensation table for the ultrasonic inspection defect roughness influence of the main equipment of the nuclear power plant is formulated according to an experimental result and a curve fitting method;
and (5) making a defect surface roughness compensation curve for ultrasonic inspection of the main equipment of the nuclear power plant.
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