Method for treating containers for radioactive materials against corrosion

Abstract

The present invention relates to a method for treating at least one surface of a container for transporting, storing, and / or keeping radioactive material against corrosion, wherein the at least one surface of the container is a surface to which at least one seal of the container is intended to be applied. This method is carried out by an electrolytic apparatus comprising an anode, a cathode, and an electrolyte solution, the electrolyte solution containing at least one metal M in cation form, and the method is carried out in the following sequential steps (a) to (d): (a) A step of bringing at least one applicator impregnated with an electrolyte solution into contact with the surface of a container, wherein the container forms a cathode, the applicator forms an anode, and the anode and cathode are connected to a power source. (b) A step of applying a voltage supplied by the power supply between the cathode and anode at a value U between 5V and 30V, (c) A step of maintaining a voltage at this value U so as to reduce the amount of metal M in cationic form, thereby forming a layer of metal M on the surface of the container in contact with the applicator. (d) a step of removing the applicator from the coated surface of the container, The electrolyte solution contains nickel sulfamate, silver salts, and / or copper salts.

Description

[Technical Field]

[0001] The present invention relates to a method for treating containers for radioactive materials against corrosion.

[0002] The present invention relates more specifically to a method for treating at least one surface of a container for transporting, storing, and / or preserving radioactive materials against corrosion. Advantageously, this surface corresponds to a surface on which a seal provided on the container is intended to be applied.

[0003] The present invention also relates to a container for transporting, storing, and / or preserving radioactive materials, having at least one surface treated against corrosion by the anti-corrosion treatment method described above. [Background technology]

[0004] It can be mentioned that methods for treating corrosion known in the field of containers for transporting, storing, and / or preserving radioactive materials may be used, and these methods essentially involve forming an anti-corrosion coating, typically made of nickel, at least at the level of the container's cavities, that is, on the internal surface of the container, or even on both the internal and external surfaces of the container.

[0005] To accomplish this, the body of the container, with its bottom and side walls extending from the bottom, is placed in a tank in which nickel is typically electrolytically deposited to a thickness of 300 μm. Such a method has many drawbacks, which relate to the handling of the container body in terms of the latter's impressive dimensions, the material cost due to coating at least the internal surface of the container, or even both the internal and external surfaces, and the associated processing time. However, such a method is somewhat oversized when only the surface of the container to which the seal is intended to be applied, corresponding to the so-called "seal bearing" surface, is to be protected from corrosion. Furthermore, an additional process of machining the surface is required to obtain the desired roughness.

[0006] Therefore, more targeted (localized) anti-corrosion treatment methods have been proposed that treat only the surface corresponding to the sealed bearing, thereby limiting the material and implementation costs related to dimensional constraints.

[0007] In particular, this includes a processing method comprising the deposition of a localized stainless steel coating on the surface of the seal bearing by arc welding. However, such a method requires not only long welding times but also additional machining steps.

[0008] Document JP S57 93895 U describes a reactor containment vessel having a flange seal, wherein the seal surface is coated with a plating layer to prevent rust. This plating layer is produced by applying a solution-impregnated sponge or brush to the surface intended to be coated, with the sponge and surface forming the anode and cathode, respectively. However, this document does not specify the composition of the solution or the operating conditions carried out to obtain the plate layer. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] Accordingly, the object of the present invention is to overcome the shortcomings of prior art methods and to provide a method for treating a container for radioactive material against corrosion, characterized by the deposition of a protective coating localized at the level of the container, more specifically, at the level of a surface intended to be protected against corrosion, such as the seal bearing surface described above. This method should also be more economical than prior art methods by enabling this protection against corrosion by a reduced, constant thickness coating without relying on additional grinding steps of the coating, for example, by mechanical processing. [Means for solving the problem]

[0010] As with the others, these objectives are achieved, firstly, by a method for treating at least one surface of a container for transporting, storing, and / or preserving radioactive material against corrosion, wherein the at least one surface of the container is a surface intended to apply at least one seal of the container.

[0011] According to the present invention, this method is carried out by an electrolytic apparatus comprising an anode, a cathode, and an electrolyte solution, wherein the electrolyte solution contains at least one metal M in cation form, and the following sequential steps (a) to (d): (a) A step of bringing at least one applicator impregnated with an electrolyte solution into contact with the surface of a container, wherein the container forms a cathode, the applicator forms an anode, and the anode and cathode are connected to a power source. (b) A step of applying a voltage supplied by the power supply between the cathode and the anode, with a value U between 5V and 30V, (c) A step of maintaining the voltage at this value U in order to reduce the amount of metal M in cationic form, thereby forming a layer of metal M on the surface of the container in contact with the applicator, (d) a step of removing the applicator from the coated surface of the container, The electrolyte solution contains nickel sulfamate, silver salts, and / or copper salts.

[0012] The method according to the present invention makes it possible to produce a corrosion-resistant coating formed by a metal layer made of metal M, where metal M is in this case Ni, Ag, or Cu, or an alloy of two or all three of these metals M.

[0013] This corrosion-resistant coating is electrolytically deposited on a localized surface of the container, the localized surface corresponding to the surface of the container in contact with the applicator, and the localized surface is specified to be electrically conductive. The corrosion-resistant coating is formed by the electrolytic reduction of metal M in cationic form in an electrolyte solution impregnated in the applicator, and this electrolytic reduction is specified to occur on the surface of a cathode formed by the container. Having a substantially constant thickness, this electrolytic corrosion-resistant coating preserves the initial roughness of the localized surface to which it is applied, and therefore does not require mechanical treatment at the end of the method to give it a desired roughness. In addition to being substantially constant, the thickness of the coating is less than the thickness of corrosion-resistant coatings produced by prior art methods, and is therefore able to accommodate any deformation of the container body. Advantageously, this thickness is between 20 μm and 100 μm, preferably between 40 μm and 70 μm.

[0014] It is specified that the expression "between... and..." as used in this application, when merely cited, must be understood to define not only the value of the interval but also the limit of that interval.

[0015] The surface to be treated may correspond to only a first portion of the entire surface under consideration, and this first portion of the surface must be electrically conductive. On the other hand, it should be noted that the second portion is electrically insulated to avoid any deposition of metal on this second portion.

[0016] As shown above, step (a) of bringing the container into contact with at least one applicator impregnated with an electrolyte solution determines the surface of the container on which the anti-corrosion coating is electrolytically deposited.

[0017] As previously shown, this surface of the container to which this anti-corrosion coating is electrolytically deposited corresponds to at least the surface of the container to which the container seal is intended, or in other words, the seal bearing surface.

[0018] In an advantageous embodiment, during step (b), the value U of the voltage applied between the cathode and the anode is between 8 V and 15 V.

[0019] In one embodiment of the method according to the invention, the surface of the container is a revolution surface whose axis of revolution corresponds to the longitudinal axis of the container.

[0020] Therefore, this surface can also be a cylindrical surface parallel to the longitudinal axis of this container. This surface can also be in the form of a disc perpendicular to the longitudinal axis of this container.

[0021] In a first variant of the method according to the invention, during steps (a) to (c), the contact between the surface of the container and the applicator is created by the fixed position of the applicator on all or part of the surface of the container.

[0022] In a second variant of the method according to the invention, during steps (a) to (c), the contact between the surface of the container and the applicator is created by the relative movement of the applicator with respect to the surface of the container.

[0023] According to a particular embodiment, the speed of the relative movement of the applicator with respect to the surface of the container is between 1 m / min and 40 m / min, preferably between 5 m / min and 30 m / min. <0​​​​​​​​​​​​​​The first advantage of this reduction in applicator size is that it facilitates the impregnation of the applicator with the electrolyte solution. The second advantage is that it reduces the output of the power generator providing the power, and thus reduces the risk of temperature rise due to the Joule effect of the electrolyte solution.

[0028] According to a particular embodiment, especially when the surface of the container to be treated for corrosion is a cylindrical surface, the longitudinal dimension of the applicator is greater than or equal to the longitudinal dimension of the surface of the container to be treated.

[0029] According to other specific embodiments, particularly when the surface of the container to be treated for corrosion is in the form of a disc, the radius dimension of the applicator is greater than or equal to the radius dimension of the surface of the container to be treated.

[0030] Alternatively, surface treatment can also be achieved by combining the rotation of the container with the movement of the applicator in a direction parallel or perpendicular to the container's axis, depending on whether the surface is cylindrical or disc-shaped.

[0031] Regardless of whether a first or second variation of the method according to the present invention is considered, during each of steps (a) through (c), the applicator is kept in contact with the surface of the container to be treated against corrosion. This contact is achieved by applying pressure from the applicator to the surface of the container to be treated.

[0032] To obtain a corrosion-resistant coating of substantially constant thickness, preferably, the pressure applied by the applicator on the surface of the container is constant.

[0033] In a particular embodiment, the pressure exerted on the surface of the container by the applicator during steps (a) to (c) is 20.10 -4 It is below MPa.

[0034] Advantageously, this pressure exerted on the surface of the container by the applicator is 10 -4 MPa and 15.10 -4 It is between MPa.

[0035] The method according to the present invention may be implemented with only one applicator. However, there is nothing preventing the consideration of implementing two, three, or even more applicators, as this specifically optimizes the wettability of the surface being treated and, more generally, reduces the overall duration of the anti-corrosion treatment.

[0036] Therefore, according to an advantageous embodiment, the method according to the present invention employs two applicators, which are located opposite each other with respect to the axis of the container.

[0037] Throughout this application, the term "applicator" used in the singular form is specified to include both the use of a single applicator and the use of multiple applicators.

[0038] According to one embodiment, the applicator is made of a conductive material, preferably graphite or nickel.

[0039] In an advantageous embodiment, the applicator is perforated and / or grooved. The perforations and / or grooves made within these applicators not only allow for good impregnation of the applicator with the electrolyte solution, but also facilitate the degassing of dihydrogen formed during the electrolytic reduction reaction occurring on the surface of the container (cathode).

[0040] As previously shown, the electrolyte solution impregnated into the applicator contains metal M in at least one cationic form, where metal M is selected from Ni, Ag, and Cu.

[0041] The electrolyte solution contains nickel sulfamate, silver salts, and / or copper salts.

[0042] Therefore, the method according to the present invention makes it possible to produce a corrosion-resistant coating formed by a metallic layer consisting of metallic nickel, silver, or copper using a metallic alloy of two or three of these metals. Such metals and metallic alloys are well known for their corrosion resistance.

[0043] When the metal M in cation form is a silver salt, this silver salt can be silver cyanide.

[0044] When the metal M in the cation form is a copper salt, this copper salt may be copper(II) sulfate or copper(II) borate fluoride.

[0045] In a more specific and advantageous alternative embodiment, the electrolyte solution comprises nickel sulfamate.

[0046] The implementation of an electrolyte solution containing nickel sulfamate makes it possible to obtain a protective coating that is particularly corrosion-resistant, resisting thermal shock during the operation of the vessel, especially when the vessel is suddenly submerged for underwater filling of nuclear fuel, and preventing cracking under accidental transport conditions, particularly under the influence of ellipticization of the cylindrical body of the vessel and thus the seal bearing surface.

[0047] According to a particular embodiment, the temperature of the electrolyte solution impregnated in the applicator is between 15°C and 80°C.

[0048] Therefore, the method according to the present invention has the advantage that it can be carried out at room temperature, that is, at a temperature typically between 18°C ​​and 25°C.

[0049] To reduce the overall duration of the anti-corrosion treatment, the temperature of the electrolyte solution impregnated within this applicator can be advantageously brought to a temperature between 30°C and 70°C, preferably between 50°C and 70°C.

[0050] According to one embodiment, the current density (DI) per unit surface area (S) applied during step (c), denoted as DI / S, is 4 Ah / dm 2 and 12 Ah / dm 2 It is between these two states. S is identified as corresponding to the surface that is processed during process (c).

[0051] Controlling the parameter, which is the current density per unit surface area, makes it possible to control the final thickness of the metal layer M that forms the corrosion-resistant coating.

[0052] Advantageously, the current density per unit surface area applied during process (c) is 6 Ah / dm 2 and 8 Ah / dm 2 It is between these two points.

[0053] According to one embodiment, the method according to the present invention comprises one or more of the following steps (i) to (iv): (i) A step of applying masking to the surface of the container other than the surface to be processed, (ii) The process of applying a cleaning solution to the surface of the container and then rinsing it with water, (iii) The step of applying a solution to activate the surface of the container and then rinsing it with water, (iv) The step of rinsing the coated surface of the container with water, (v) a step of removing the masking, further including Steps (i) through (iii) are performed before step (a), and steps (iv) and (v) are performed after step (d).

[0054] Performing step (i) makes it possible to protect one or more surfaces of a container that are not intended to be treated by the method according to the present invention. This step may also make it possible to protect specific portions of the surface to be treated and thus perform deposition only on the unprotected portions of the surface.

[0055] Performing one or / or the other of steps (ii) and (iii) makes it possible to optimize the subsequent adhesion of the metal layer M that constitutes the corrosion-resistant coating.

[0056] In certain embodiments, the washing solution of step (ii) comprises a sodium salt. Preferably, this sodium salt is selected from sodium hydroxide and sodium carbonate.

[0057] In certain embodiments, the activating solution of step (iii) preferably contains an inorganic acid, which is sulfuric acid.

[0058] In a particular embodiment, one and / or the other of steps (ii) and (iii) may be carried out electrolytically, and the cleaning and / or activating solution then constitutes the electrolyte solution of the electrolytic device of the anode, in which the cathode is formed by a container and at least one applicator is impregnated with one and / or the other of these solutions, by analogy with the anti-corrosion treatment method described above.

[0059] The method according to the present invention makes it possible to treat at least one surface of a container for transporting, storing and / or keeping radioactive materials, in particular a surface to which at least one seal is intended to be applied, against corrosion.

[0060] Such containers for transporting, storing, and / or keeping radioactive materials typically comprise a container body consisting of a bottom and side walls extending from the bottom, as well as a system for sealing this body.

[0061] The surface of a container coated by the processing method according to the present invention corresponds to at least a surface for applying at least one seal to ensure sealing between the body and the sealing system in the sealed position of the container.

[0062] Other advantages, purposes, and specific features of the present invention will be made apparent with reference to the accompanying drawings from the following description of at least one specific, non-limiting embodiment of the method according to the present invention. [Brief explanation of the drawing]

[0063] [Figure 1] Figure 1 is a schematic perspective view of a container for the transport, storage, and / or safekeeping of radioactive materials. [Figure 2] Figure 2 is a schematic cross-sectional view of the body of the container shown in Figure 1. [Figure 3] Figure 3 is a magnified view of the top of the container body. [Figure 4]Figure 4 is a front view of the upper end of the container body, in particular of surface S2, which is marked in Figure 3 and has two anodes. [Modes for carrying out the invention]

[0064] The method according to the present invention is carried out on a container 10 for transporting, storing, and / or keeping radioactive material, schematically shown in Figure 1.

[0065] The container 10 includes a cylindrical body 12, as well as a sealing system or lid 14.

[0066] As depicted in Figure 2, the body 12 of the container 10 includes a bottom 16 and side walls 18 extending from the bottom 16. The body 12 has a circular cross-section centered on its longitudinal axis A.

[0067] The upper part 12' of the body 12, corresponding to the opposite portion of the bottom 16, is intended to apply at least one seal located on the inner surface of the lid (not shown). This or these seals enable sealing between the body 12 and the sealing system 14 in the sealed position of the container 10.

[0068] Referring to Figure 3, which corresponds to an enlarged view of the upper part 12' of the main body 12, it can be observed that this upper part 12' includes the surfaces marked by references S1, S2, S3, S4 and S5.

[0069] One surface, S1, S3, and S5, and the other, S2 and S4, correspond to the longitudinal surface (cylindrical) and the radial surface (disk shape) with respect to the longitudinal axis A, respectively.

[0070] If all surfaces S1 to S5 are treated by the anti-corrosion treatment method according to the present invention, the following description relates to the treatment of surface S2 alone.

[0071] The surface S2 has an annular shape and corresponds to a surface for applying two seals (not shown) provided on the lower surface of the lid portion 14 of the container 10 to enable securing a seal between the body 12 and the lid portion 14 in the closed position of the container 10.

[0072] Typically, the surface S2 to be treated has a surface area of about 5,840 cm 2 and a radius dimension on the order of 10 cm.

[0073] In a first step (i) before the corrosion treatment of the surface S2, the other surfaces S1, S3, S4 and S5 are masked by applying a protective coating.

[0074] Such a protective coating can be formed by an aluminum tape type adhesive tape, by paint, and / or by a removable varnish. In FIG. 3, these masked surfaces S1 and S3 to S5 are marked by lines thicker than the line marking the surface S2.

[0075] In a second step (ii), a step of electrolytically cleaning the surface S2 is performed.

[0076] To do this, the surface S2 is brought into contact with two graphite applicators or anodes A1 and A2 each having a surface area of 228 cm 2 (19 cm × 12 cm), so the contact area between the applicators A1, A2 and the surface S2 corresponds to about 4% of the total surface area of S2.

[0077] These applicators A1 and A2 are impregnated with a cleaning solution containing sodium hydroxide and having a temperature between 15 °C and 40 °C. The impregnation of the applicators A1, A2 is maintained by continuous supply by a hose at a flow rate of the cleaning solution of more than 4 L / min during step (ii).

[0078] These applicators A1 and A2 are arranged diametrically opposite to each other as depicted in FIG. 4.

[0079] Then, the main body 12 is rotated about its longitudinal axis A so that it has a relative movement of approximately 15 m / min between the anodes A1 and A2 and the surface S2.

[0080] Next, a voltage between surface S2 and anodes A1 and A2 is applied, with a value between 8V and 10V.

[0081] When the current density reaches a value on the order of 22Ah, the voltage is cut off, anodes A1 and A2 are removed, and the rotation of the main body 12 is interrupted.

[0082] In the third step (iii), an electrolytic activation step is performed on the surface S2 that was cleaned during step (ii).

[0083] To do this, surface S2 is brought into contact with two other applicators, or anodes A1' and A2', which are impregnated with an activating solution containing sulfuric acid, the temperature of which is between 15°C and 40°C, which is specific to this step (iii). The impregnation of applicators A1' and A2' is maintained during step (iii) by continuous supply of the activating solution through a hose at a flow rate of more than 3 L / min.

[0084] As in step (ii), during step (iii), applicators A1' and A2' are positioned opposite each other (Figure 4).

[0085] Next, a voltage of the order of 8V is applied between the surface S2 and the anodes A1' and A2'.

[0086] Next, the main body 12 is rotated about its longitudinal axis A so that there is a relative movement of approximately 15 m / min between the anodes A1', A2' and the surface S2.

[0087] When the current density reaches a value on the order of 32Ah, the voltage is cut off, anodes A1' and A2' are removed, and the rotation of the main body 12 is interrupted.

[0088] In the fourth step, the corrosion treatment method according to the present invention is carried out in such a way that it enables the electrolytic deposition of metallic nickel on the surface S2 which was activated during step (iii).

[0089] To do this, surface S2 is brought into contact with two new applicators, or anodes A1'' and A2'', impregnated with a solution containing nickel sulfamate and having a temperature between 50°C and 70°C. The impregnation of applicators A1'' and A2'' is maintained during this fourth step by continuous supply of nickel sulfamate solution through a hose at a flow rate of more than 10 L / min.

[0090] As in steps (ii) and (iii), in this fourth step, applicators A1'' and A2'' are positioned opposite each other (Figure 4).

[0091] Next, a voltage on the order of 15V per anode and an amperage of approximately 200A are applied between surface S2 and anodes A1'', A2'', respectively.

[0092] Next, the main body 12 is rotated about its longitudinal axis A so that it has a relative movement of approximately 15 m / min between the anodes A1'', A2'', and the surface S2.

[0093] The current density is 6.8 Ah / dm² per unit surface area. 2 When the value reaches a value on the order of 400Ah corresponding to the value of , the voltage is cut off, anodes A1'' and A2'' are removed, and the rotation of the body 12 is interrupted.

[0094] At the end of this fourth step, the surface S2 is almost completely coated with a metallic nickel layer having a constant thickness on the order of 50 μm.

[0095] In the fifth step, the masking of the untreated surfaces S1, S3, S4, and S5 is removed in order to proceed with any subsequent treatment of one or more of these surfaces.

[0096] Each of the second, third, and fourth steps can be performed automatically. [Explanation of symbols]

[0097] 10 containers 12 Main unit 12' Top 14 Lid 16 Bottom 18 Side wall

Claims

1. A method for treating at least one surface of a container (10) for transporting, storing, and / or keeping radioactive material against corrosion using an electrolytic apparatus comprising anodes (A1'', A2'', a cathode and an electrolyte solution, wherein the at least one surface of the container is a surface intended to apply at least one seal to the container, the electrolyte solution contains at least one metal M in cationic form, and the method comprises the following sequential steps (a) to (d): (a) A step of bringing at least one applicator (A1'', A2'', impregnated with the electrolyte solution) into contact with the surface of the container (10), wherein the container (10) forms the cathode, the applicators (A1'', A2'',) form the anode, and the anode and the cathode are connected to a power source. (b) A step of applying a voltage supplied by the power supply between the cathode and the anode at a value U between 5V and 30V, preferably between 8V and 15V, (c) A step of maintaining a voltage at this value U so as to reduce the amount of metal M in cationic form, thereby forming a layer of metal M having a thickness of, preferably between 20 μm and 100 μm, more preferably between 40 μm and 70 μm, on the surface of the container (10) in contact with the applicators (A1'', A2''). (d) a step of removing the applicators (A1'', A2'') from the coated surface of the container (10), The method wherein the electrolyte solution comprises nickel sulfamate, silver salt and / or copper salt.

2. The method according to claim 1, wherein the surface of the container (10) is an orbiting surface, for example, a cylindrical surface or a disk surface.

3. The method according to claim 2, wherein, between steps (a) to (c), contact between the surface of the container (10) and the applicators (A1'', A2'') is made by the relative movement of the applicators (A1'', A2'') with respect to the surface of the container (10), and the relative movement is made either by the rotation of the container (10) with respect to its longitudinal axis to which the applicators (A1'', A2'') are fixed, or by the rotation of the applicators (A1'', A2'') with respect to its longitudinal axis to which the container (10) are fixed.

4. The method according to claim 3, wherein the relative movement speed of the applicators (A1'', A2'', with respect to the surface of the container (10) is between 1 m / min and 40 m / min, preferably between 5 m / min and 30 m / min.

5. Between steps (a) and (c), the pressure applied to the surface of the container (10) by the applicators (A1'', A2'', is 20.10 －４ Below MPa, to be advantageous, 10 －４ MPa and 15.10 －４ The method according to any one of claims 1 to 4, wherein the value is between MPa and MPa.

6. The method according to any one of claims 1 to 5, wherein the surface of the applicator (A1'', A2'',) in contact with the container (10) corresponds to at most 50%, preferably at most 30%, of the surface to be treated.

7. The method according to any one of claims 2 to 6, wherein the radius dimension of the applicator (A1'', A2'', is greater than or equal to the radius dimension of the surface to be treated.

8. The method according to any one of claims 2 to 6, wherein the longitudinal dimension of the applicator (A1'', A2'', is greater than or equal to the longitudinal dimension of the surface to be treated.

9. The method according to any one of claims 1 to 8, wherein the silver salt is silver cyanide.

10. The method according to any one of claims 1 to 9, wherein the copper salt is copper(II) sulfate or copper(II) borate fluoride.

11. The method according to any one of claims 1 to 10, wherein the applicator (A1'', A2'', is made of a conductive material, preferably graphite or nickel, and is advantageously perforated and / or grooved.

12. The method according to any one of claims 1 to 11, wherein two applicators (A1'', A2'', which are diametrically opposed to the axis (A) of the container (10) are used.

13. The method according to any one of claims 1 to 12, wherein the temperature of the electrolyte solution impregnated in the applicator (A1'', A2'', is between 15°C and 80°C, preferably between 30°C and 70°C, and more preferably between 50°C and 70°C.

14. The current density applied during process (c) is 4 A. h / dm². ２ and 12 A. h / dm ２ Between these two, the advantageous position is 6 A. h / dm ２ and 8 A. h / dm ２ The method according to any one of claims 1 to 13, wherein the method is between the above.

15. One or more of the following steps (i) through (v): (i) A step of applying masking to the surface of the container (10) other than the surface to be processed, (ii) The step of applying a cleaning solution to the surface of the container (10) and then rinsing it with water, (iii) The step of applying a solution to activate the surface of the container (10), and then rinsing it with water, (iv) A step of rinsing the coated surface of the container (10) with water, (v) further comprising the step of removing the masking, The method according to any one of claims 1 to 14, wherein steps (i) to (iii) are performed before step (a), and steps (iv) and (v) are performed after step (d).

16. The method according to any one of claims 1 to 15, wherein the container (10) is a body (12), the body (12) being formed by a bottom (16) and side walls (18) extending from the bottom (16), and the container (10) comprises a system (14) for sealing the body (12), and the coated surface of the container (10) corresponds to a surface for applying at least one seal that ensures sealing between the body (12) and the sealing system (14) in the sealed position of the container (10).

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