WO2019224490A1 - Method for securing a detection method by dye penetration or magnetoscopy - Google Patents

Abstract

The invention relates to a method for securing a detection method by dye penetration or magnetoscopy of a material discontinuity in an object (S), characterized in that: - the method comprises a step of identifying the object (S) by installing a support (1) in the vicinity of said object, said support integrating a unique identifier that can be read remotely by a mobile reading terminal (3); - reading the unique identifier by the mobile reading terminal (3) is necessary in order to implement the detection method.

Description

 METHOD FOR SECURING A DETECTION METHOD BY

 RESSUAGE OR MAGNETOSCOPY

Description

Technical Field of the Invention

The invention relates to a method for securing a bleeding or magnetic detection method.

It relates to the technical field of non-destructive testing methods of an object likely to have discontinuities of material, by means of a control product, such as in particular the techniques of bleeding and magnetic particle. It relates more generally to the processes of secure traceability of non-destructive controls.

State of his technique.

The bleeding allows to detect the presence of a discontinuity (pores, microcracks, cracks, ...) and opening on the surface of an object, for example a weld. The bleed is applicable regardless of the material of the object to control.

 In a first step, the surface of the object to be controlled is cleaned with a cleaning product, in order to remove pollutants (oil, grease, rust, oxidation, etc.) capable of blocking the discontinuity.

A colored penetrant is then applied to the cleaned surface. This product has a viscosity such that it penetrates by capillarity into the discontinuity to be detected. The penetrant is left on the surface of the object for a period of time generally from 5 minutes to 20 minutes. This is a first condition of waiting to ensure its good penetration into the discontinuity. At the end of this period, the surface is cleaned again to eliminate the penetrant which would not have actually penetrated the discontinuity.

 A developer product (powder, suspension or solution), for example talc, which functions as a "blotter", is applied to the cleaned surface. By allowing the developer to act for a determined period of time (for example 20 minutes), the penetrant will emerge out of the discontinuity, and cause the appearance of spots revealing the presence of a discontinuity. The developer action time is a second waiting condition.

 The spots, their position, their shape and their dimensions are accurately recorded by a technician, usually by taking photographs recorded in a report. Several time-shifted observations allow the technician, depending on the shape and dimensions of the spots during successive observations, to determine with a certain degree of precision the shapes and dimensions of the different discontinuities thus detected and consequently to determine if they present a risk and intervene accordingly.

 After this series of observations, the traces of revealing product and penetrating product having been removed are removed by appropriate cleaning of the surface.

 In an installation, some surfaces to be controlled, such as welds, are more difficult to access than others. It may therefore happen that a technician does not wish to control a 'A' welding difficult to access. In this case, he could perform a bleeding operation on a weld 'B' easier to access and indicate in his report that the photographs he took correspond to the bleeding operation on the weld'A '.

In addition, it is possible that an ill-intentioned technician may not comply with the aforementioned waiting conditions. For example, to save time, a technician can shorten the action time of the penetrant and / or the developer. In this In this case, discontinuities may not be detected and / or their consequences minimized.

Magnetic particle is an alternative non-destructive test technique that can detect the presence of a discontinuity in an object (opening or not on the surface). This technique consists in creating a magnetic flux on the surface of a ferromagnetic material (iron, cast iron, steels, welds, sheets, ...).

 As for bleeding, we start by cleaning the surface to control to remove pollutants.

 A developer is then applied to the cleaned surface. This product is usually in the form of a liquid mixed with colored or fluorescent metal particles.

 The surface to be controlled is then magnetized using a sufficiently high magnetic field. In the presence of a discontinuity, the lines of the magnetic field undergo a distortion which generates a "magnetic leakage field", also called "magnetic flux leakage", which, attracting the metal particles, provides characteristic indications of the discontinuity. These indications are observed, photographed and recorded in a report prepared by the technician.

 For a ferromagnetic object to control, the magnetic particle is preferred to bleeding because it is faster. Indeed, the aforementioned waiting conditions are no longer necessary. However, the disadvantages associated with the implementation of the method persist by a malicious technician not wishing to control an object difficult to access.

The invention aims to remedy this state of affairs. In particular, an object of the invention is to provide a method for tracing and securing non-destructive testing, in particular to ensure that all surfaces to be checked have been and that the operating protocols have been respected.

A further object of the invention is to automate as much as possible the establishment of control reports. Disclosure of Invent.

The solution proposed by the invention is a method for securing a method for detecting by penetrant or magnetic particle a discontinuity of matter in an object. This process is remarkable in that:

 it comprises a step consisting in identifying the object by installing a medium near said object, which medium integrates a unique identifier readable remotely by a mobile reading terminal,

 a reading of the unique identifier by the mobile reading terminal is necessary to implement the detection method.

Full implementation of the detection method therefore requires at least a reading of the unique identifier. Without this reading, all or some of the steps of the detection method can not be executed. It is therefore certain that the detection method is well implemented at the level of the good object. To resume the example above, the technician having to control a weld A 'difficult to access, can not perform a bleeding operation on a weld' B 'easier to access. Indeed, each of the welds is now associated with its own unique identifier. A controller can easily see that the detection method was not performed at the weld 'A' but at the weld 'B'.

Other advantageous features of the method which is the subject of the invention are listed below. Each of these features may be considered alone or in combination with the outstanding characteristics defined above and be the subject of one or more divisional patent applications, which remarkable features are not necessarily indispensable as such to the resolution. technical problems that the following features propose to solve: Advantageously, a reading of the unique identifier by the mobile reading terminal results in the opening of a time window during which at least one photograph of the object is taken after and / or before the execution of a step of the detection method.

 - The method may include a step of inscribing the unique identifier visibly to the naked eye on the medium, and photographing the object so that the unique identifier visibly inscribed with the naked eye on the support is visible on the photograph.

 Advantageously, taking a photograph of the object, after performing a step of the detection method, is necessary to perform the next step of said method.

 Advantageously, the taking of the photograph of the object is carried out from the mobile reading terminal, which terminal incorporates an apparatus for taking photographs.

 The method may comprise a step of time stamping each photograph taken of the object.

 Advantageously, a reading of the unique identifier, from the mobile reading terminal, after the execution of a step of the detection method, is necessary to execute the next step of said method.

 The method may comprise a step consisting in reading the unique identifier first from the mobile reading terminal before executing the first step of the detection method, this preliminary reading causing the opening, on a graphical interface of said terminal, of a file to record the progress of the steps of the detection method.

The method may comprise the steps of: associating, in a computer memory or a computer database, the unique identifier with additional information relating to the object; interrogating the computer memory or the computer database following the prior reading of the unique identifier from the mobile reading terminal; generating a pre-filled report in which the additional information contained in the computer memory or the computer database and which is associated with the identifier is recorded. unique read; - open the file on the graphical interface of the mobile terminal reading, which file is in the form of pre-filled report.

 The detection method may be a bleeding detection method comprising a step of cleaning a surface of the object and a step of applying a colored penetrant to said cleaned surface, the method comprising the steps of: a cleaned surface photograph of the object; - apply the penetrating product to the cleaned surface of the object; take a first photograph of the cleaned surface of the object to which the penetrating product is applied; - take a second photograph of the cleaned surface of the object to which the penetrating product is applied, which second photograph is taken after a determined period of time starting from the taking of the first photograph.

 The detection method may be a bleeding detection method comprising a step of applying a developer to a surface of the object, the method comprising the steps of taking a first photograph of the surface of the object on which the developer is applied; take a second photograph of the surface of the object to which the developer product is applied, which second photograph is taken after a determined period of time starting from the taking of the first photograph.

 The method may comprise steps of using a carrier in the form of a label, a collar or a plate, and entering the unique identifier in an RFID chip, in a bar code or in the form of a sequence of encrypted or encrypted characters adapted to be read by an optical character recognition device.

Description of the figures.

Other advantages and features of the invention will appear better on reading the description of a preferred embodiment which follows, with reference in the accompanying drawings, given as indicative and non-limiting examples and in which:

 FIG. 1 illustrates the installation of a plate of a support at the level of a pipe weld,

 FIG. 2 illustrates an arrangement of different elements of a computer server that can be used in the invention,

 FIG. 3 illustrates an arrangement of different elements of a mobile reading terminal,

 FIG. 4 illustrates steps of a method for controlling a bleeding detection method,

 FIG. 5 illustrates steps of another method of controlling a bleeding detection method,

 FIG. 6 illustrates steps of a method for controlling a magnetic detection method,

 FIG. 7 illustrates steps of another method of controlling a magnetic detection method.

Preferred embodiments of the invention

The following description refers to a technique of penetrant or magnetic particle detection of a discontinuity of material in a pipe weld. The invention is however applicable to the control of other types of objects such as welded joints, forging products, foundry products, mechanical parts, surgical prostheses, etc.

Figure 1 illustrates a pipe T having a weld S to control. This weld S is identified by installing a support 1 close to it. This support 1 may for example be fixed on the wall of the pipe T, within a radius of 1 cm to 20 cm from the weld S. The support 1 is advantageously in the form of a self-adhesive label stuck on the wall of the pipe T , rectangular in shape, length of about 5 cm, and a width of about 4 cm. To avoid any fraud or falsification, the label can be undecollable, that is to say it tears or breaks up if we try to take off.

It is also possible to use a plate, rigid or flexible, fixed permanently on the wall of the pipe T, for example by screwing or welding. It is also possible to use a support plate attached to the pipe T, at the level of the weld S to be inspected, by means of a plastic or steel collar which is fastened around said pipe. This collar is preferably provided with a secure lock preventing detachment of the tube T. It is also possible to use a support 1 which is directly in the form of a collar (without plate).

The support 1 integrates a unique identifier readable remotely by a mobile reading terminal 3. In Figure 1, this identifier is stored in the memory of a RFID chip 10. The latter is for example in the form of a circuit electronic glued or embedded in the support 1, and comprising an antenna associated with an electronic chip to receive and respond to radio requests transmitted from the mobile terminal reading 3. The unique identifier can also be registered in an NFC chip, in a barcode (1D barcode, QR-Code, ...). We can still note the identifier in the form of a sequence of encrypted characters (or encrypted). The mobile reading terminal 3 then integrates an optical character recognition device (Optical Character Recognition or OCR) adapted to read the sequence of encrypted or encrypted characters and extract the identifier of.

The unique identifier written in the RFID chip 10 preferably consists of a series of letters and / or numbers and / or symbols. By way of example, and to illustrate the present invention, the identifier "C231A226" is associated with the weld S. In FIG. 1, this identifier "C231A226" is also inscribed in a manner visible to the naked eye on the support 1. To facilitate the identification of a weld S in an installation, each weld is advantageously associated with geolocation information at the time of its production. For example, as soon as the welder has made the weld, he can record his position, and therefore that of the weld, by means of a touch pad, which tablet integrates a geo-location program for example to associate coordinates GPS to the identifier of the weld S. One can also read the RFID chip 10 by means of an RFID chip reader integrating a GPS module able to record GPS coordinates. At the moment of reading of the chip 10, the GPS coordinates recorded are collected. It is then possible to associate these GPS coordinates with the unique number of the chip 10 and incidentally with the identifier of the weld S.

During the manufacture of the support 1, the unique identifier of the weld S is written in the memory of the RFID chip 10. This incrementation is performed automatically by means of a software of the type known to those skilled in the art. It is also possible to integrate in the support 1, and more particularly in the memory of the RFID chip 10, geo-location information associated with the weld S. It may for example be the aforementioned GPS coordinates. In this way, by scanning the RFID chip 10, an operator can control that it installs well the support 1 at the corresponding weld S.

The RFID chip memory 10 can furthermore integrate additional information relating to the weld S such as: name of the installation, name of the welder, location of the weld, material of the weld, thickness of the weld, date of the last control etc.

This additional information is preferably stored in a computer memory or a computer database, for example integrated in a remote computer server. The computer memory or the computer database includes, for example, a table in which each identifier unique is associated with additional information related to the weld (or object) concerned.

This computer server may consist of a physical server or, in some cases, be composed of several separate computers that communicate and interact on a network to perform the functions described above in the description. This server is preferably "remote" in the sense that it is not located in the room where the pipe T and the weld S are located, but outside thereof.

Referring to FIG. 2, this computer server 4 notably comprises one or more processors or microprocessors 40, one or more computer memories or computer databases 41, a network interface 42, which are mutually connected via a bus 43. several computer applications - or computer programs - are stored in the memory or memories 41 and whose instructions, when executed by the processor or processors 40 allow to achieve the features described further in the description.

 The network interface 42 is a wired or wireless communication interface adapted to establish communication with the mobile reading terminal 3. To secure the exchange of data between the mobile reading terminal 3 and the server 4, the connection between these two elements can be achieved through a VPN virtual private network, a secure internet network, or a wired link. It should be noted that the technical characteristics of the domestic electrical appliances stored in the memory 41 can be in the database 5 (in addition to or in substitution for said memory).

The memory or database 41 can be hosted directly in the server 4, or in another server or in a Cloud Computing type server network, or in a computer, or even directly in the mobile reading terminal 3. The mobile reading terminal 3 (FIGS. 1 and 3) is in the form of an electronic terminal, for example a touch-sensitive electronic tablet (of the iPad®, Samsung GalaxyTab® type, etc.), operating with a control system. operating type Windows, Mac, iOS, Android, or in the form of a mobile phone or smartphone (smartphone) type iPhone®, Samsung Galaxy®, etc.. The terminal 3 is adapted to be operated by a natural person, who, in practice, is the technician who implements the penetrant or magnetic particle detection method.

 With reference to FIG. 3, the mobile terminal 3 notably comprises one or more processors or microprocessors 30, one or more memories 31, a network interface 32, a graphical interface 33, a reader 34 adapted to the nature of the unique identifier. to be read (RFID chip reader, NFC chip reader, barcode scanner or QR-Code, etc.), an apparatus for taking photographs 35, these elements being mutually connected via a common bus 36. or several computer applications - or computer programs - are stored in the memory or memories 31 and whose instructions (or codes), when they are executed by the processor or processors 30 allow to achieve the features described further in the description.

 The memory or memories 31 must be considered as a storage device also suitable for storing data and / or data files. It can be a native memory or a reported memory such as a Secure Digital (SD) card.

 The processor 30 and the memory 31 can be integrated in a SIM card (Suscriber Identity Module), the latter being connected to the bus 36.

The network interface 32 is particularly suitable for establishing a communication with the remote server 4. The network interface 32 may for example comprise a GSM module providing network connectivity to the mobile terminal 3. In general, the network interface 32 a to function to manage the connections between the mobile terminal 3 and a telecommunications network via network technologies such as, but not limited to, GSM, EDGE, 2G, 3G, 4G, etc. The graphical interface 33 offers the user the ability to enter, select and / or enter data or instructions. It is for example in the form of a touch screen, a screen connected to a keyboard, etc.

 The reader 34 is particularly adapted to receive and transmit signals to communicate wirelessly with the support 1, and more particularly with the chip 10 (or the barcode or QR-Code, ...). These signals can be radio frequency signals using a Bluetooth protocol, ISM, Wifi, ANT, ZIGBEE, etc. The reader can be directly integrated in the terminal 3, or be connected thereto wirelessly or wirelessly.

 The device 35 is for example a camera and / or a camera integrated in the mobile terminal 3. It is also possible to use a remote device of the mobile terminal 3, connected to the latter wirelessly or wirelessly.

 The user may have to install one or more computer applications in his mobile terminal 3 to implement all or part of the invention from said terminal, including the pairing procedure. These computer applications can be pre-installed on the terminal 3. The user however has the possibility to search these computer applications from a dedicated website, and then download them on his terminal 3.

Various steps of a method for securing a bleeding detection method will now be described with reference to FIG. 4. In this embodiment, it is more a succession of readings of the unique identifier integrated in the support 1 which ensures the smooth running of the operating protocol.

Prior phase

 This preliminary phase is optional.

Step E1: the technician uses the terminal 3 to read the unique identifier integrated in the support 1 which is installed near the weld S. The terminal 3 reads for example the identifier written in the RFID chip 10 (or the identifier registered in the NFC chip, the barcode, the QR-Code, ...). Step E2: the RFID chip 10 sends the terminal 3 the unique identifier.

Step E3: the terminal 3 interrogates the memory or the database 41 by transferring to it the unique identifier read.

 Event EV4: the server 4 searches in its table the additional information associated with the unique identifier received. This EV4 event can be performed in the terminal 3 in the case where the memory or the database 41 is housed in said terminal.

 Step E5: the server 4 transmits to the terminal 3 this additional information.

 Event EV6: The terminal 3 generates a pre-filled report in which the additional information received is recorded (name of the installation, name of the welder, identification and location of the weld, material of the weld, thickness of the weld, date of the last check, ...). This report opens on the graphical interface 33 of the terminal 3 on which it is displayed. The technician may be required to complete this report with other information such as his name, first name, quality, date and time, etc. More generally, the prior reading of the identifier performed in step E1 causes the opening, on the graphical interface 33 of the terminal 3, of a file (preferably the aforementioned pre-filled report) which will allow the technician to report the progress of the steps of the penetrant detection method.

Execution of the steps of the PT method

 The file opened on the graphical interface 33 of the terminal 3 indicates in particular to the technician the instructions to be followed for the progress of each step and allows to report the progress of the steps of the detection method.

Event EV7: the terminal 3 automatically displays on the graphic interface 33 instructions for cleaning the surface of the weld S. The technician cleans this surface with a cleaning product, to remove pollutants likely to plug the discontinuity. Step E8: after performing the cleaning step (event EV7), the technician uses the terminal 3 to read the identifier entered in the RFID chip 10. This read instruction appears preferentially on the graphical interface 33.

 Step E9: the RFID chip 10 sends back to the terminal 3 the unique identifier.

 Event EV10: the technician takes a photograph of the cleaned surface of the weld S. This photographing instruction appears preferentially on the graphical interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier from the terminal 3 (steps E8 and E9) which causes the automatic opening of a time window during which the technician must take at least one photograph of the weld S cleaned. The graphical interface 33 automatically displays a countdown, for example 5 seconds to 30 seconds, during which the camera 35 must be activated for shooting. The duration of this time window is adjusted to be long enough for the technician to be able to take the photograph properly, but too short for a malicious technician to have the time to take a photograph of another solder already cleaned. In addition, the support 1 being installed near the weld S, the identifier "C231A226" visibly inscribed with the naked eye on the support 1 is also visible in the photograph. We are therefore certain that it is the good welding that has been cleaned and photographed. To further trace the cleaning step of the weld S and / or to ensure that the photograph taken of it has not been forged, said photograph is advantageously time stamped by the apparatus 35 or by the terminal 3. The photograph is automatically inserted in the file or report opened from the terminal 3.

Event EV11: the technician applies the penetrating colored product to the cleaned surface of the weld S. This instruction appears on the graphic interface 33. The technician is not authorized to apply the penetrating product if he has not previously photographed the cleaned surface of the weld S (event EV10). In other words, taking the photograph of the cleaned surface of the weld S is necessary (this is the trigger) to apply the penetrating product. Without this photograph, the terminal 3 does not display the instructions to apply the penetrating product, and the file or report will mention that the operating protocol has not been respected. In an alternative embodiment, it is a new reading of the identifier written in the RFID chip 10 after the event EV10 which is the triggering element allowing the application of the penetrating product.

 Step E12: after having applied the penetrating product (event EV11), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This read instruction appears on the graphical interface 33, for example at the same time as the instruction to apply the penetrating product (event EV11).

 Step E13: the RFID chip 10 returns to the terminal 3 the unique identifier.

 Event EV14: the technician takes a first photograph of the cleaned surface of the weld S on which the penetrating product is applied. This first photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time-stamped and automatically inserted in the file or report opened from the terminal 3. According to an advantageous characteristic of the invention, it is the reading of the identifier from the terminal 3 (steps E12 and E13) which causes the automatic opening of a time window during which the technician must take this first photograph. The graphical interface 33 automatically displays a count, for example between 4 seconds and 30 seconds, during which the camera 35 must be activated for shooting.

Event EV15: the technician takes a second photograph of the cleaned surface of the weld S on which the penetrating product is applied. This second photograph is taken at the end of a given period of time from the taking of the first photograph (event EV14). Advantageously, it is the taking of the first photograph that results in a count, for example between 5 minutes and 20 minutes, during which the camera 35 is blocked so that the technician can not take this second photograph. In an alternative embodiment, this count runs from a new reading of the identifier on the support 1 after the event EV14. This ensures good penetration of the penetrating product in a possible discontinuity of the weld S (first waiting condition mentioned in the preamble). At the end of this count, the graphical interface 33 automatically displays a new count during which camera 35 is to be activated for taking the second photograph. This second photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Step E16: after having taken the second photograph (event EV15), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This reading instruction appears preferentially on the graphical interface 33, for example as soon as it is taken. of the second photograph (event EV15).

 Step E17: the RFID chip 10 returns to the terminal 3 the unique identifier.

 Event EV18: the technician cleans the surface of the weld S in order to eliminate the penetrant which would not have actually penetrated the discontinuity. This instruction appears on the graphical interface 33 following the reading of the identifier in steps E16 and E17. This reading of the identifier in steps E16 and E17 is necessary to execute the cleaning phase. Without this reading, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

 Step E19: after performing the cleaning step (event EV18), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This reading instruction appears preferentially on the graphical interface 33, for example in same time as the instruction to clean the surface of the weld S (event EV18).

 Step E20: the RFID chip 10 sends the terminal 3 the unique identifier.

Event EV21: the technician takes a photograph of the cleaned surface of the weld S. This photographic instruction appears preferentially on the graphical interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier unique from the terminal 3 (steps E19 and E20) which causes the automatic opening of a time window during which the technician must take a photograph of the weld S cleaned. The graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226" is visible on said photograph. She is It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV22: the technician applies the developer product to the cleaned surface of the weld S. This instruction appears on the graphical interface 33. Preferably, the technician is not authorized to apply the developer product if he has not previously photographed the cleaned surface of the S weld (event EV18). In other words, taking a photograph of the cleaned surface of the solder S is necessary (this is the trigger) to apply the developer product. Without this photograph, the terminal 3 does not display the instructions for applying the developer product, and the file or report will mention that the operating protocol has not been followed. In an alternative embodiment, it is a new reading of the identifier written in the RFID chip 10 after the event EV21 which is the triggering element for applying the penetrating product.

 Step E23: after having applied the developer product (event EV22), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This reading instruction appears preferentially on the graphical interface 33, for example at the same time the instruction to apply the developer product (event EV22).

 Step E24: The RFID chip 10 sends the terminal 3 the unique identifier.

 Event EV25: the technician takes a first photograph of the surface of the weld S on which the developer product is applied. This first photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time-stamped and automatically inserted into the file or report opened from the terminal 3. According to an advantageous characteristic of the invention, it is the reading of the unique identifier from the terminal 3 (steps E23 and E24) that causes the automatic opening of a time window during which the technician must take this first photograph. The graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for shooting.

Event EV26: the technician takes a second photograph of the surface of the weld S on which the developer is applied. This second photograph is taken at the end of a given period running from the taking of the first photograph (event EV25). Advantageously, it is the taking of the first photograph which causes a countdown, for example 20 minutes, during which the camera 35 is blocked so that the technician can not take this second photograph. In an alternative embodiment, this count runs from a new reading of the identifier on the support 1 after the event EV25. This ensures the penetrant will emerge out of the discontinuity and cause the appearance of spots revealing the presence of a discontinuity (second condition of waiting mentioned in the preamble). At the end of this count, the graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for the taking of the second photograph. This second photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Step E27: after having taken the second photograph (event EV26), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This reading instruction preferably appears on the graphical interface 33, for example when taking of the second photograph (event EV26).

 Step E28: The RFID chip 10 returns to the terminal 3 the unique identifier.

 Event EV29: the technician cleans the surface of the weld S in order to eliminate the traces of revealing product and penetrating product having sown. This instruction appears on the graphical interface 33 following the reading of the identifier in steps E27 and E28. This reading of the identifier in steps E27 and E28 is necessary to execute the cleaning phase. Without this reading, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

Step E30: after performing the cleaning step (event EV29), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This read instruction preferably appears on the graphical interface 33, for example at the same time. time as the instruction to clean the surface of the weld S (event EV29). Step E31: the RFID chip 10 returns to the terminal 3 the unique identifier.

Event EV32: the technician takes a photograph of the cleaned surface of the weld S. This photographic instruction appears preferentially on the graphical interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier unique from the terminal 3 (steps E30 and E31) which causes the automatic opening of a time window during which the technician must take a photograph of the weld S cleaned. The graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226 is also on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Step E33: the terminal 3 transmits to the server 4 file or report in which is reported the progress of each step of the bleeding detection method, with the various photographs taken. This transmission can be initiated automatically following the taking of the photograph of the cleaned surface (event EV32), or following a new reading of the identifier inscribed in the RFID chip 10, or be initiated by the technician following the support. a dedicated key on the terminal 3.

FIG. 5 illustrates a variant of the method for securing a bleeding detection method. In this embodiment, it is more a succession of photographs taken of the weld S that makes it possible to ensure the smooth running of the operating protocol.

Prior phase

 This optional preliminary phase is identical to that described above with reference to FIG.

Execution of the steps of the PT method Step E70: the technician uses the terminal 3 to read the identifier entered in the RFID chip 10. This read instruction appears preferentially on the graphical interface 33 after opening the file (event E6).

 Step E80: The RFID chip 10 returns to the terminal 3 the unique identifier.

 Event EV90: The technician takes a photograph of the surface of the weld S before cleaning. This photographing instruction preferentially appears on the graphical interface 33, after the reading of the identifier in steps E70 and E80. This reading causes the automatic opening of a time window during which the technician must take at least one photograph of the weld S. The graphical interface 33 automatically displays a count, for example between 4 seconds and 30 seconds during which the Camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226" is on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV100: the terminal 3 automatically displays on the graphical interface 33 instructions for cleaning the surface of the weld S, for example as soon as the photograph is taken (event EV90). The technician cleans this surface with a cleaning product, to remove pollutants that may block the discontinuity. The technician is not authorized to clean the S weld if he has not previously photographed his surface before cleaning (event EV90). In other words, photographing the raw surface of the solder S is necessary (it is the trigger) to clean it. Without this photograph, the terminal 3 does not display the instructions for cleaning the weld S, and the file or report will mention that the operating protocol has not been respected.

Event EV110: the technician takes a photograph of the cleaned surface of the weld S on which the penetrating product is applied. This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time-stamped and automatically inserted in the file or report opened from the terminal 3. This photographing instruction appears preferentially on the graphical interface 33, for example in same time as the instruction to clean the surface of the weld S (event EV100).

 Event EV120: the technician applies the colored penetrant to the cleaned surface of the weld S. This instruction appears on the graphic interface 33. Preferably, the technician is not authorized to apply the penetrating product if he does not have previously photographed the cleaned surface of the weld S (event EV110). In other words, taking the photograph of the cleaned surface of the weld S is necessary (this is the trigger) to apply the penetrating product. Without this photograph, the terminal 3 does not display the instructions to apply the penetrating product, and the file or report will mention that the operating protocol has not been respected.

 Event EV130: the technician takes a first photograph of the cleaned surface of the weld S on which the penetrating product is applied. This capture instruction of the first photograph appears preferentially on the graphical interface 33, for example at the same time as the instruction for applying the penetrating product (event EV120). This first photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

Event EV140: the technician takes a second photograph of the cleaned surface of the weld S on which the penetrating product is applied. This second photograph is taken at the end of a fixed period running from the taking of the first photograph (event EV130). It is the taking of the first photograph that causes a countdown, for example 5 minutes to 20 minutes, during which the camera 35 is blocked so that the technician can not take this second photograph. At the end of this count, the graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for the taking of the second photograph. This second photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3. Event EV150: the technician cleans the surface of the weld S in order to eliminate the penetrant that would not have actually penetrated the discontinuity. This instruction appears on the graphical interface 33 following the taking of the second photograph (event EV140). It can be considered that this photo taking is necessary to carry out the cleaning phase. Without this second photograph, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

 Event EV160: the technician takes a photograph of the cleaned surface of the weld S. This photographing instruction appears preferentially on the graphic interface 33, for example at the same time as the instruction to clean the surface of the weld S ( event EV150). This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV170: the technician applies the developer product to the cleaned surface of the weld S. This instruction appears on the graphical interface 33. Preferably, the technician is not authorized to apply the developer product if he has not previously photographed the cleaned surface of the weld S (event EV160). In other words, taking a photograph of the cleaned surface of the solder S is necessary (this is the trigger) to apply the developer product. Without this photograph, the terminal 3 does not display the instructions for applying the developer product, and the file or report will mention that the operating protocol has not been followed.

Event EV180: the technician takes a first photograph of the surface of the weld S on which the developer is applied. This capture instruction of the first photograph appears preferentially on the graphical interface 33, for example at the same time as the instruction for applying the developer product (event EV170). This first photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3. Event EV190: the technician takes a second photograph of the surface of the weld S on which the developer is applied. This second photograph is taken at the end of a fixed period running from the taking of the first photograph (event EV25). It is the taking of the first photograph that causes a countdown, for example 20 minutes, during which the camera 35 is blocked so that the technician can not take this second photograph. At the end of this count, the graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for the taking of the second photograph. This second photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV200: the technician cleans the surface of the weld S in order to eliminate the traces of revealing product and penetrating product having sown. This instruction appears on the graphical interface 33 following the taking of the second photograph (event EV190). It can be considered that this photo taking is necessary to carry out the cleaning phase. Without this second photograph, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

 Event EV210: the technician takes a photograph of the cleaned surface of the weld S. This photographing instruction appears preferentially on the graphic interface 33, for example at the same time as the instruction to clean the surface of the weld S ( event EV200). This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

Step E220: the terminal 3 transmits to the server 4 the file or report in which is reported the progress of each step of the bleeding detection method, with the various photographs taken. This transmission can be initiated automatically following the taking of the photograph of the cleaned surface (event EV210), or following a new reading of the identifier inscribed in the chip RFID 10, or be initiated by the technician after pressing a dedicated key on the terminal 3.

Various steps of a method for securing a magnetic detection method will now be described with reference to FIG. 6. In this embodiment, it is more a succession of readings of the unique identifier integrated in the support 1 which ensures the smooth running of the operating protocol.

Prior phase

 This optional preliminary phase is identical to that described above with reference to FIG.

Execution of the steps of the magnetic detection method

 The file opened on the graphical interface 33 of the terminal 3 indicates in particular to the technician the instructions to be followed for the progress of each step and allows to report the progress of the steps of the detection method.

 Event EV700: the terminal 3 automatically displays on the graphical interface 33 instructions for cleaning the surface of the weld S. The technician cleans this surface with a cleaning product, to remove pollutants.

 Step E800: after performing the cleaning step (event EV700), the technician uses the terminal 3 to read the identifier entered in the RFID chip 10. This reading instruction appears preferentially on the graphical interface 33.

 Step E900: the RFID chip 10 refers to the terminal 3 the unique identifier.

Event EV1000: the technician takes a photograph of the cleaned surface of the weld S. This photographic instruction preferably appears on the graphic interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier from the terminal 3 (steps E800 and E900) which causes the automatic opening of a time window during which the technician must take at least one photograph of the weld S cleaned. The graphical interface 33 automatically displays a countdown during which the camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV1100: The technician applies the developer to the cleaned surface of the S weld, this product containing colored or fluorescent metal particles. This instruction appears on the graphic interface 33. The technician is not authorized to apply the developer product if he has not previously photographed the cleaned surface of the weld S (event EV1000). In other words, taking a photograph of the cleaned surface of the solder S is necessary (this is the trigger) to apply the developer product. Without this photograph, the terminal 3 does not display the instructions for applying the developer product, and the file or report will mention that the operating protocol has not been followed. In an alternative embodiment, it is a new reading of the identifier entered in the RFID chip 10 after EV event EV1000 which is the trigger for applying the developer product.

 Event EV1200: the technician loving the weld S using a magnetic field high enough to generate a "magnetic leakage field" likely to provide characteristic indications of the discontinuity. This instruction appears on the graphical interface 33. A new reading of the identifier written in the RFID chip 10 after the event EV1100 may be the triggering element allowing the magnetization of the weld S.

 Step E1300: after having magnetized the weld S (event EV1200), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This read instruction appears on the graphical interface 33, for example at the same time as the instruction to magnetize the weld S (event EV1200).

 Step E1400: The RFID chip 10 sends the terminal 3 the unique identifier.

Event EV1500: the technician takes at least one photograph of the S weld after magnetization and on which appears or not a "magnetic leakage field". This photographing instruction appears preferentially on the graphic interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier in steps E1300 and E1400 which causes the automatic opening of a time window during which the technician must take a photograph of the weld S after magnetization. The graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3. Several photographs can be taken so that the whole controlled surface is photographed

 Step E1600: after having taken the photograph (event EV1500), the technician uses the terminal 3 to read the identifier written in the RFID chip 10. This reading instruction appears preferentially on the graphical interface 33, for example as soon as it is taken. photography (event EV1500).

 Step E1700: the RFID chip 10 refers to the terminal 3 the unique identifier.

 Event EV1800: the technician cleans the surface of the solder S in order to eliminate the revealing product. This instruction appears on the graphical interface 33 following the reading of the identifier in steps E1600 and E1700. This reading of the identifier in steps E1600 and E1700 is necessary to execute the cleaning phase. Without this reading, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

 Step E1900: after performing the cleaning step (event EV1800), the technician uses the terminal 3 to read the identifier entered in the RFID chip 10. This read instruction preferably appears on the graphical interface 33, for example at the same time. time as the instruction to clean the surface of the weld S (event EV1800).

 Step E2000: the RFID chip 10 returns to the terminal 3 the unique identifier.

Event EV2100: the technician takes a photograph of the cleaned surface of the weld S. This photographing instruction appears preferentially on the graphical interface 33. According to an advantageous characteristic of the invention, it is the reading of the identifier in steps E1900 and E2000 which entails the automatic opening of a window during which the technician must take a photograph of the weld S cleaned. The graphical interface 33 automatically displays a new countdown during which the camera 35 must be activated for shooting. This photograph is taken so that the identifier "C231A226 is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Step E2200: the terminal 3 transmits to the server 4 the file or report in which is reported the progress of each step of the bleeding detection method, with the various photographs taken. This transmission can be initiated automatically following the taking of the photograph of the cleaned surface (event EV2100), or following a new reading of the identifier entered in the RFID chip 10, or be initiated by the technician following the support. a dedicated key on the terminal 3.

FIG. 7 illustrates a variant of the method for securing a magnetic detection method. In this embodiment, it is more a succession of photographs taken of the weld S that makes it possible to ensure the smooth running of the operating protocol.

Prior phase

 This optional preliminary phase is identical to that described above with reference to FIG.

Execution of the steps of the magnetic detection method

 Step E700 ': the technician uses the terminal 3 to read the identifier entered in the RFID chip 10. This read instruction appears preferentially on the graphical interface 33 after opening the file (event E6).

 Step E800 ': the RFID chip 10 returns to the terminal 3 the unique identifier.

Event EV900 ': The technician takes a photograph of the surface of the weld S before cleaning. This shooting instruction appears preferentially on the graphical interface 33, after reading the identifier in steps E700 'and E800'. This reading causes the automatic opening of a time window during which the technician must take at least one photograph of the weld S. The graphical interface 33 automatically displays a countdown during which the camera 35 must be activated for taking view. This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV1000 ': the terminal 3 automatically displays on the graphical interface 33 instructions for cleaning the surface of the weld S, for example as soon as the photograph is taken (event EV9Q0'). The technician cleans this surface with a cleaning product, to remove pollutants. The technician is not allowed to clean the weld S if he has not previously photographed his surface before cleaning (event EV900 '). In other words, photographing the raw surface of the solder S is necessary (it is the trigger) to clean it. Without this photograph, the terminal 3 does not display the instructions for cleaning the weld S, and the file or report will mention that the operating protocol has not been respected.

 Event EV1100 ': the technician takes a photograph of the cleaned surface of the weld S. This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time-stamped and automatically inserted into the file or report opened from the terminal 3. This photographing instruction preferably appears on the graphic interface 33, for example at the same time as the instruction to clean the surface of the weld S (event EV1000 ').

Event EV1200 ': the technician applies the developer product to the cleaned surface of the weld S. This instruction appears on the graphical interface 33. The technician is not authorized to apply the developer product if he has not previously photographed the cleaned surface of the weld S (event EV1100 '). In other words, taking a photograph of the cleaned surface of the solder S is necessary (it is the trigger) to apply the product developer. Without this photograph, the terminal 3 does not display the instructions for applying the developer product, and the file or report will mention that the operating protocol has not been followed.

 Event EV1300 ': the technician takes a photograph of the surface of the weld S on which the developer is applied. This instruction to take the photograph preferably appears on the graphical interface 33, for example at the same time as the instruction for applying the developer product (event EV1200 '). This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Event EV1400 ': the welding technician S welding using a magnetic field high enough to generate a "magnetic leakage field" likely to provide characteristic indications of the discontinuity. This instruction appears on the graphical interface 33. Preferably, the technician is not allowed to magnetize the weld S if he has not previously photographed the weld S (event EV1300 '). In other words, the photography of the surface of the weld S on which the developer product is applied is necessary (it is the trigger) to magnetize the weld S. Without this photograph, the terminal 3 displays not the instructions for magnetizing the weld S, and the file or report will mention that the operating protocol has not been respected.

 Event EV1500 ': the technician takes a photograph of the S weld after magnetization and on which appears or not a "magnetic leakage field". This photographing instruction appears preferentially on the graphic interface 33, for example at the same time as the instruction for magnetizing the weld S (event EV1400 '). This photograph is taken so that the identifier "C231A226" is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

Event EV160Q ': the technician cleans the surface of the weld S in order to eliminate the developer product. This instruction appears on the graphical interface 33 following the taking of the photograph at the event EV1500 '. This photo taking is necessary to execute the cleaning phase. Without this photograph, the terminal 3 does not display the instructions for cleaning the surface of the weld S, and the file or report will mention that the operating protocol has not been respected.

 Event EV1700 ': the technician takes a photograph of the cleaned surface of the weld S. This photographing instruction appears preferentially on the graphic interface 33, for example at the same time as the instruction to clean the weld S (event EV1600 '). This photograph is taken so that the identifier "C231A226 is visible on said photograph. It is also time stamped and automatically inserted in the file or report opened from the terminal 3.

 Step E1800 ': the terminal 3 transmits to the server 4 the file or report in which is reported the progress of each step of the bleeding detection method, with the various photographs taken. This transmission can be initiated automatically following the photographing of the cleaned surface (event EV1700 '), or following a new reading of the identifier entered in the RFID chip 10, or be initiated by the technician following the support. a dedicated key on the terminal 3.

The arrangement of the various elements and / or means and / or steps of the invention, in the embodiments described above, should not be understood as requiring such an arrangement in all implementations. In any case, it will be understood that various modifications may be made to these elements and / or means and / or steps, without departing from the spirit and scope of the invention. In particular :

 The steps described with reference to FIG. 4 and the steps described with reference to FIG. 5 can be combined with one another. Likewise, the steps described with reference to FIG. 6 and the steps described with reference to FIG. 7 can be combined with one another.

- The different steps of the process can be performed in parallel. Indeed, the operator can implement process steps on a first weld and, in parallel, implement process steps on another weld. For example, an operator may decide to clean the surface of all welds at check and then photograph all these cleaned surfaces, then apply the penetrant or developer on each of these surfaces, etc. Similarly, during the waiting times imposed between two steps (eg EV14 and EV15) implemented on a weld, the operator can implement one or more other steps on another weld.

 - The different photographs taken can be automatically digitally signed. This ensures that the photographs have been processed by the mobile reading terminal 3 and / or by the software for implementing the method without the possibility of falsification.

 - Each product container used (cleaning, penetrating, developer, ...) is advantageously provided with an identifier remotely readable by the terminal 3. This identifier is preferably an RFID chip (or a barcode, ...) incorporating in its memory the nature of the product, its preemption date, its lot number, its instructions for use, its installation time, etc. This identifier can be read before each use of the product. When the terminal 3 reads this identifier, it can automatically determine the associated exposure time. For example, reading the RFID chip of the penetrating product EV11 event automatically calculates the count at the event EV15 during which the camera 35 is blocked. Also, if the event EV11, the operator reads the identifier of a revealing product, the terminal 3 can tell him that it is not the right product and a penetrating product should be used. If the identifier of a penetrating product is not read, the terminal 3 blocks the procedure and the file or report will mention that the operating protocol has not been respected. It is the same if the preemption date of the product whose identifier is read is exceeded.

- The process described in the previous paragraph can apply to all the tools used for the implementation of the detection method. Thus, lamps used to illuminate the photographed surfaces and / or the magnetizer used to generate the "magnetic leakage field" may also be provided with an identifier. This identifier is preferably an RFID chip (or a barcode, etc.) integrating, for example, into its memory: the tooling model, its serial number, its last revision date, etc. Thus, at the end of the phase before the event EV6, the operator can read the identifier of the tool so that the information it contains is automatically mentioned in the file or report.

Claims

claims 1. A method for securing a method for detecting by penetrant or magnetic particle a discontinuity of matter in an object (S), characterized by the fact that:  the method comprising a step of identifying the object (S) by installing a support (1) in the vicinity of said object, which medium integrates a unique identifier readable remotely by a mobile reading terminal (3),  a reading of the unique identifier by the mobile reading terminal (3) is necessary to implement the detection method. 2. Method according to claim 1, wherein a reading of the unique identifier by the mobile reading terminal (3) causes the opening of a time window during which one takes at least one photograph of the object (S). after and / or before performing a step of the detection method. 3. Method according to claim 2, consisting in registering the unique identifier in a manner visible to the naked eye on the support (1), and photographing the object (S) so that the unique identifier inscribes visible to the naked eye on the support (1) is visible on the photograph. 4. Method according to one of the preceding claims, wherein a photograph of the object (S), after the execution of a step of the detection method, is necessary to perform the next step of said method. . 5. Method according to one of claims 2 to 4, wherein the taking of the photograph of the object (S) is performed from the mobile reading terminal (3), which terminal incorporates an apparatus (35) for taking of photographs. 6. Method according to one of claims 2 to 5, comprising a step of time stamp each photograph taken from the object (S). 7. Method according to one of claims 1 to 6, wherein a reading of the unique identifier, from the mobile reading terminal (3), after the execution of a step of the detection method, is necessary to perform the next step of said method. 8. Method according to one of claims 1 to 7, comprising a step of previously reading the unique identifier from the mobile reading terminal (3) before performing the first step of the detection method, this prior reading leading opening, on a graphical interface (33) of said terminal, a file to report the progress of the steps of the detection method. The method of claim 8, comprising the steps of: associating, in a computer memory (41) or a computer database, the unique identifier with additional information relating to the object (S),  interrogating the computer memory or the computer database (41) following the prior reading of the unique identifier from the mobile reading terminal (3),  generating a pre-filled report in which the complementary information contained in the computer memory or the computer database 41 is recorded and which is associated with the unique identifier read,  - open the file on the graphical interface (33) of the mobile reading terminal (3), which file is in the form of the pre-filled report. The method according to one of the preceding claims, wherein the detection method is a bleeding detection method comprising a step of cleaning a surface of the object (S) and a step of applying a colored penetrant to said cleaned surface, the method comprising the steps of:  take a cleaned surface photograph of the object (S),  - apply the penetrating product to the cleaned surface of the object (S),  take a first photograph of the cleaned surface of the object (S) to which the penetrating product is applied,  take a second photograph of the cleaned surface of the object (S) on which the penetrating product is applied, which second photograph is taken after a determined period of time starting from the taking of the first photograph. The method according to one of the preceding claims, wherein the detection method is a bleeding detection method comprising a step of applying a developer product to a surface of the object (S), the method comprising the steps of at :  take a first photograph of the surface of the object (S) to which the developer product is applied,  take a second photograph of the surface of the object (S) on which the developer product is applied, which second photograph is taken after a determined period of time starting from the taking of the first photograph. 12. Method according to one of the preceding claims, of using a support (1) in the form of a label, a collar or a plate, and to register the unique identifier in an RFID chip. (10), in a barcode or in the form of a sequence of encrypted or encrypted characters adapted to be read by an optical character recognition device.