HUMAN PROTECTIVE SUIT REMOVAL KIT

Description

Domaine technique

[0001] The present invention relates to the field of human protective clothing against contamination.

[0002] Contamination can be of radiological, chemical or other origin.

[0003] The suit may be a flexible, one-piece diving suit or a full-body suit used in conjunction with protective extremities that may include gloves, boots, a hood and / or respiratory protection, such as a panoramic mask.

[0004] The invention relates more particularly to a kit facilitating the undressing of an operator wearing such protective clothing. Technique antérieure

[0005] Construction sites with contamination risks, particularly those of radioactive origin, require specific clothing for construction site operators. Different protective clothing may be used, depending on the nature of the risks involved.

[0006] The undressing of personnel working in a contaminated environment is carried out in such a way as to avoid any transfer of contamination to the individual or to the environment. It takes place in places sheltered from the weather, with containment suitable for protection against the contamination in question. An airlock is generally implemented to demarcate this buffer zone dedicated to undressing operations.

[0007] The removal of the outfit is generally done by cutting it using a specific process requiring the undresser to be qualified. Furthermore, some of these processes cannot guarantee the absence of contamination transfer. A thorough, post-undressing check is then necessary. This lengthens the duration of the operation.

[0008] Prior to undressing, washing the operator in the suit with water is required in some cases. The purpose of this operation is to remove as much contamination as possible from the suit. This generates contaminated effluent and requires a dedicated installation that requires specific maintenance since this installation is itself contaminated. In addition, implementing the washing operation can be tricky, particularly on outdoor construction sites or in confined spaces. It also brings an additional difficulty when undressing, because the protective suit cannot be dried easily. If drying is carried out using cloths, new contaminated waste is produced.

[0009] An example of a known dressing system is described in document US 2018 / 0279695 Al.

[0010] In most prior art protective clothing, the attachment of extremity protections (gloves, boots, hood), which are not integrated into said clothing, is done by adhesive tape. However, the removal of adhesive tapes during undressing phases is difficult.

[0011] Hand / foot extremity covering systems exist. They allow for continuity of protection between an outfit and extremity protection. However, they do not allow undressing without the risk of contamination transfer since they do not contain any potential contamination.

[0012] Furthermore, these systems are integral to the outfit or specific to an outfit and to extremity protection (gloves). They are therefore not adaptable to different types of protection (outfit, gloves).

[0013] There is therefore a need to improve solutions for removing protective clothing that may be contaminated by overcoming the drawbacks of existing solutions.

[0014] The aim of the invention is to meet at least part of this need. Exposé de l'invention

[0015] To this end, the invention, as defined in the claims, relates, according to one of its aspects, to a kit for undressing an operator's protective clothing, comprising: a belt configured to be worn by the operator under the protective suit; at least two first circles configured to be arranged on an outer circumference of the belt under the protective suit; at least two second circles configured to be arranged on the protective suit, the first and second circles comprising continuous reliefs configured to be mutually nested when the second circles are arranged on the first circles, such that the protective suit is pinched between the continuous reliefs; at least two first hoods configured to be each arranged on one of the two second circles such that a protective overgarment is pinched between the hoods and the second circles; a second hood configured to be arranged on the first two hoods.

[0016] Thus, the invention essentially consists of an undressing kit which, when put in place when dressing an operator with protective clothing, allows undressing to be carried out particularly simply and protects the operator from contamination which might come from the protective clothing.

[0017] Indeed, the kit according to the invention allows the use of protective overgarments that are impervious to contamination when undressing. These overgarments, in combination with the kit according to the invention, confine the potentially contaminated parts of the protective clothing.

[0018] Once the protective overcoats are in place, the operator can then remove the protective clothing without taking any special precautions, in particular without having to wash the protective clothing before undressing.

[0019] The kit according to the invention may also comprise one or more of the following optional features:the kit further comprises at least a first ring configured to be worn by the operator under the protective clothing, a second ring configured to be worn by the operator in the immediate vicinity of the first ring under an end protection and a third cover configured to be arranged on the first and second rings so as to pinch the protective clothing and the end protection; the first ring and / or the second ring comprise on their outer surface shoulders extending radially outwards defining lateral faces comprising grooves; the second circles comprise on their outer surface grooves; the continuous reliefs of the first circles are tongues arranged on their outer surface and the continuous reliefs of the second circles are recesses made in their inner surface;the belt has on its outer surface rails configured to hold the first circles on the belt. ;

[0020] The invention also relates to a method of dressing an operator with protective clothing comprising the installation of an undressing kit as described previously, comprising the following steps: a) place the belt around the operator's waist; b) place the first two circles on the belt; c) place the protective clothing on the operator; d) arrange the second two circles on the first two circles above the protective clothing so as to pinch the protective clothing between the first and second circles; e) arrange the first two hoods on the second two circles; f) arrange the second hood on the first two hoods.

[0021] Advantageously, the method according to the invention further comprises the following steps: g) placing a first ring under one end of the protective suit; h) placing a second ring in the immediate vicinity of the first ring; i) placing an end guard on the operator at said end of the protective suit; j) placing a third cover over the first and second rings so as to respectively pinch the protective suit and the end guard between the third cover and the first ring, and between the third cover and the second ring.

[0022] The invention also relates to a method of undressing an operator dressed in protective clothing put in place according to the dressing method, comprising the following steps: a') removing the second hood; b') removing the first hoods; c') arranging a first protective overgarment at least in part on one of the second circles and arranging a second protective overgarment at least in part on the other of the second circles; d') placing the first hoods on the second circles so as to pinch the first and second protective overgarments between the first hoods and the second circles; e') cutting the protective suit between the two first circles; f') detaching one of the first circles from the belt and removing the assembly comprising said first circle, one of the second circles, one of the first hoods, one of the protective overgarments and a cut-out portion of the protective suit; g') removing the assembly comprising the belt, the other first circle, the other second circle, the other first hood, the other protective overgarment and the other cut-out portion of the protective suit.

[0023] The invention finally relates to a method of undressing an operator dressed in protective clothing put in place according to the dressing method, comprising the following steps: h') removing the third cover; i') placing a protective overlay around the end protection and at least partly on the second ring; j') placing a fourth cover on the second ring so as to pinch the end protection; k') removing the assembly comprising the end protection, the second ring, the fourth cover and the protective overlay.

[0024] Other advantages and characteristics will become more apparent upon reading the detailed description, given for illustrative and non-limiting purposes, with reference to the following figures. Brève description des dessins

[0025] [ Fig 1 ] There figure 1 illustrates an undressing kit according to the invention in a configuration allowing the undressing of an operator. Fig 2 ] There figure 2 is a perspective view of a belt on which the first two circles of a kit according to the invention are mounted. Fig 3 ] There figure 3 is a longitudinal sectional view of the device of the figure 2 . [ Fig 4 ] There figure 4 is a longitudinal sectional view of a kit according to the invention in a working configuration. Fig 5 ] There figure 5 is a longitudinal sectional view of the kit of the figure 4 . [ Fig 6 ] There figure 6 is a partial sectional view of a ring of a kit according to the invention in a configuration allowing the operator to undress. Fig 7 ] There figure 7 is a partial sectional view of a part of a kit according to the invention comprising two rings as illustrated in the figure 6 . [ Fig 8 ] There figure 8 is a perspective view of a ring of a kit according to the invention. Fig 9A], [Fig 9B ], [ Fig 9C ] THE figures 9A à 9C illustrate the steps of a method of assembling a part of a kit according to the invention with two rings. Fig 10A], [Fig 10B ], [ Fig 10C], [Fig 10D ], [ Fig 10E], [Fig 10F ], [ Fig 10G ], THE figures 10A à 10G schematically represent different stages of a method of dressing and undressing an operator according to the invention. Fig 11A], [Fig 11B ], [ Fig 11C] [Fig 11D ] [ Fig 11E ] THE figures 11A à 11E illustrate the steps of a process of stripping the kit part of the figures 9 . [ Fig 12A ] [ Fig 12B] [Fig 12C] [Fig 12D ] [ Fig 12E] [Fig 12F ] [ Fig 12G] [Fig 12H ] THE figures 12A à 12H illustrate the steps of a method of undressing a part of a kit according to the invention comprising a belt. Description détaillée

[0026] Throughout the application, the terms "on" and "under" are to be understood respectively as "above" and "below".

[0027] It has been illustrated at the figure 1 an undressing kit 1 according to the invention.

[0028] Kit 1 is shown in a configuration allowing the operator's protective suit 2 to be removed at the waist. Protective suit 2 may be a suit in two separate parts or continuous at the waist, as in the example illustrated.

[0029] In the illustrated example, the kit 1 comprises a belt 10 configured to be arranged around the operator's waist. Two first circles 11, 12 are arranged on the belt, preferably being parallel to each other and perpendicular to the central axis of the belt. Preferably, the first circles 11, 12 are configured to be removably attached. Alternatively, only one of them is removable, the other being permanently attached or formed integrally with the belt 10. Advantageously, the belt comprises on its outer surface rails 26 configured to hold the first circles 11, 12 on the belt 10.

[0030] According to an advantageous embodiment, the first circles 11, 12 are clipped onto the rails 26.

[0031] The belt 10 can advantageously be opened and closed by means of a closing buckle allowing it to be placed around the operator's waist. Preferably, the length of the belt can be adjusted.

[0032] The rails 26 may be continuous along the belt 10. Alternatively, the rails 26 may be made up of a plurality of discontinuous sections. Since the different rail sections are separated by sections not comprising rails and are therefore more easily flexible if the belt 10 is flexible, this embodiment makes it easier to adjust the length of the belt.

[0033] As more particularly visible at the figure 3 , the first circles 11, 12 each comprise on their outer surface a continuous relief 13, 14. Preferably, the continuous reliefs 13, 14 are tongues projecting from the outer surface of the first circles. Alternatively, the continuous reliefs 13, 14 may be recesses hollowed out in the outer surface of the first circles.

[0034] The belt 10 provides a support point allowing the protective clothing 2 to be properly engaged between the first circles 11, 12 and the continuous reliefs 13, 14.

[0035] In a preferred embodiment, the continuous reliefs 13, 14 as well as the first circles 11, 12 have sufficient elasticity to adapt to the body size of the operator. Alternatively, the continuous reliefs 13, 14 and the first circles 11, 12 have a slide allowing these elements to be adapted to the body size of the operator. Advantageously, the reliefs 13, 14 and the first circles 11, 12 are closed by a fastener configured to ensure the continuity of the assembled kit and therefore protection against external contamination.

[0036] In the illustrated example, the tabs 13, 14 are each configured to cooperate with one of the continuous reliefs 17, 18 of the two second circles 15, 16. The continuous reliefs of the second circles are in this example continuous recesses on the inner surface of the second circles. Alternatively, the reliefs 17, 18 may be raised rather than hollow to cooperate by fitting with hollow reliefs 13, 14.

[0037] The second circles 15, 16 are configured to be fixed respectively each on one of the first circles 11, 12, so as to pinch the protective clothing 2 between the continuous reliefs 13, 14, 17, 18, as more particularly visible in figure 5 .

[0038] On each second circle 15, 16 is arranged a first cover 19, 20. The first covers 19, 20 cooperate, in the configuration shown, with an outer side of the second circles 15, 16 to pinch the protective overgarments 3, 4.

[0039] A second cover 21 is positioned on the first covers 19, 20 so as to cover them. Advantageously, the second cover 21 makes it possible to protect the second circles and the first covers from contamination during operations in potentially contaminating environments.

[0040] Thus, in the configuration shown, the assembled kit, the protective suit and the overcoat define three spaces 5, 6, 7: an interior environment 5, containing the operator and protected by the protective suit 2; an intermediate environment 6 between the protective suit 2 and the overcoats 3, 4; and an exterior environment 7 outside the overcoats 3, 4.

[0041] Optionally, auxiliary sealed passages may be provided in the second cover 21 and / or in the belt 10 to allow, for example, the passage of uncontaminated air or a communication cable.

[0042] The belt 10, the first circles 11, 12, the second circles 15, 16, the first covers 19, 20, the second cover 21 may be rigid. Alternatively, they may also be made of one or more flexible or semi-flexible materials, for example rubber or silicone. The use of flexible or semi-flexible materials advantageously improves working ergonomics. According to a preferred embodiment, the belt is made of nylon and the first circles are made of a flexible material.

[0043] As will be seen in more detail later, the configuration illustrated in figure 1 allows the operator to undress safely. If the protective suit 2 is in one piece at the belt 10, the undressing operation requires the protective suit 2 to be cut at a section of the suit located in the space 22 between the first two circles.

[0044] THE figures 2 And 3 are detailed views of the belt 10 as well as the first circles 11, 12.

[0045] There figure 4 is an alternative view of the kit 1 according to the invention in a working configuration in which the operator wearing the protective suit 2 can carry out work in a contaminated environment.

[0046] There figure 5 is a sectional view of the kit of the figure 4 The pinching of the protective clothing 2 by the continuous reliefs of the first and second circles 13, 14, 17, 18 is highlighted.

[0047] There figure 6 illustrates a different part of a kit 1 according to the invention configured to ensure a sealed connection between two protective garments, in particular between a protective suit 2 and an extremity protection 8. The extremity protection 8 may in particular be a glove, a boot, a hood or respiratory protection such as a respiratory protection device, for example a gas mask.

[0048] In this configuration, the kit 1 comprises a first ring 30 and a second ring 31. A third cover 32 is arranged on the first and second rings and holds them. The third cover and the first ring are configured to hold the contamination suit 2 by pinching. The third cover and the second ring are configured to hold the end protection 8 by pinching. The third cover also protects the first and second rings from contamination when the operator is in a potentially contaminating environment.

[0049] There figure 7 shows a different part of a kit 1 according to the invention comprising a single ring 30, configured to cooperate with a fourth cover 33 to hold the protective clothing 9 by pinching. The protective clothing may in particular be respiratory protection.

[0050] In the figure 7 , the kit 1 is assembled in a configuration allowing the operator to undress. Thus, a protective overcoat 3 is held by pinching above the protective clothing 9 by the fourth cover 33 and the ring 30.

[0051] There figure 8 is a perspective view of a ring 30 that can be used in a kit according to the invention. According to an advantageous embodiment, the ring comprises on the edges of its outer surface shoulders 34, 35 extending radially outwards defining lateral faces which comprise grooves 36. The grooves 36 cooperate with the protrusions 37 of a cover to improve the retention of the cover on the ring and the pinching of protective clothing, and therefore the sealing against sources of contamination.

[0052] The rings 30, 31 may be rigid or may be made of a flexible or semi-flexible material, in particular rubber or silicone.

[0053] We now describe the successive steps of a method followed by an operator to dress in protective clothing and protective extremities by putting in place a kit according to the invention.

[0054] THE figures 9A à 9C illustrate different stages of a process for dressing a protective end. This process involves the installation of the part of the kit shown in figure 6 .

[0055] As illustrated in the figure 9A , the first ring 30 and the second ring 31 are first placed at the ends of the protective clothing 2, for example on the sleeves or trouser legs. The end of the protective clothing 2 is arranged at least partly on the first ring 30.

[0056] As illustrated in the figure 9B , the end protection 8 is then arranged at least partly on the second ring 31.

[0057] In a third step illustrated in the figure 9C , the third cover 32 is placed on the first and second rings. The third cover makes it possible on the one hand to keep the two rings 30, 31 integral and on the other hand to pinch the protective suit 2 and the end protection 8 between the third cover and the rings. This makes it possible to ensure the sealing of the connection between the protective suit and the end protection.

[0058] Preferably, the operator performs this operation for all the extremity protections that he is required to wear, in particular at the wrists, ankles and head. Depending on the type of respiratory protection used, panoramic or not, it is however possible to implement part of the kit as described in figure 7 using a single ring 30. If the respiratory protection is of the panoramic type, the dressing method then consists of placing the upper end of the protective suit 2 at least partly on the ring 30 then placing the fourth cover 33 on the ring 30 so as to pinch the protective suit 2 to ensure a watertight connection.

[0059] After donning the protective suit 2 and the extremity protections 8, the operator 25 is dressed and can enter the contaminated environments.

[0060] We now describe the successive steps followed by an operator to undress using a kit according to the invention.

[0061] Protective clothing 2 and extremity protections 8, which are likely to be contaminated, must be treated accordingly to avoid any spread of contamination to the operator himself and / or to the environment.

[0062] The undressing process begins by placing protective overgarments over the extremity protectors and the protective clothing. Once the contaminated clothing is wrapped in the protective overgarments, the entire extremity protector and then the protective clothing can be removed.

[0063] THE figures 10A à 10G represent the steps in the process of dressing the operator and removing his protections.

[0064] In a first step ( figure 10A ), the operator 25 positions the extremity protection 8 acting as respiratory protection. This step should only be carried out first if the protective suit 2 is of the diving suit type. If the protective suit 2 is of another type, in particular if it is disposable, this step can advantageously be carried out after all the other steps in order to improve the operator's comfort.

[0065] Then he puts on the undressing kit 1, the protective suit 2 and the other extremity protections 8 as described previously ( figure 10B ). The operator is at this point ready to enter a contaminated environment.

[0066] To undress without the risk of spreading contamination, the operator first places a protective overgarment 3 over each extremity protection 8 and over the lower and upper halves of the protective suit 2 separated by the belt 10, as illustrated in figure 10C and described in more detail below. Thus, potentially contaminated clothing is confined in the protective overgarments.

[0067] In a next step illustrated in the figure 10D , the end protections 8 are removed, except for the respiratory protection which is preferably the last element to be removed.

[0068] In a next step illustrated in the figure 10E , the upper half of the protective suit 2 is removed. As described below, this operation requires cutting the protective suit.

[0069] Then the lower half of the protective suit is removed ( figure 10F ) then finally the respiratory protection is removed ( figure 10G ). The operator is then undressed.

[0070] Figures 11A to 11F illustrate the different stages of removing a protective end 8.

[0071] In the configuration of the figure 11A , the operator is dressed. As in the configuration of the figure 9C , the third cover 32 is arranged on the first and second rings and clamps with the latter the protective clothing 2 and the end protection 8.

[0072] As illustrated in the figure 11B , the operator first removes the third cover 32.

[0073] The operator then places a protective overcoat 3 around the end protection, at least partly on the second ring 31 ( figure 11C ). Protective overcoat 3 is, for example, a vinyl or butyl overcoat, particularly suitable for handling oils and hydrocarbons. A paper or cotton overcoat can also be used if this is suitable for protecting against the risk involved.

[0074] Advantageously, an intermediate protection not illustrated, such as a hood, can be arranged between the first and second rings to reinforce the protection of the environment 5 inside the protective clothing and of the external environment.

[0075] Then, the fourth cover 33 is placed on the second ring 31 so as to pinch the end protection 8 and the protective overlay 3 between the fourth cover and the second ring ( figure 11D ). The end protection 8 is now hermetically contained in the protective overcoat 3 closed by the fourth cover 33.

[0076] The procedure is the same for each of the extremity protections 8 worn by the operator. However, the respiratory protection may or may not be confined in a protective overcoat, depending on the circumstances. If such confinement is achieved, it must allow the use of the cartridge and the breathing of the operator. Typically, breathing can then be achieved by means of filtration that is impervious to contamination but permeable to the air of the uncontaminated environment. For example, a pocket can be positioned on the respiratory protection to either completely envelop it with an air-permeable part at the end of the pocket allowing breathing, or to allow the filter cartridge of the respiratory protection to access the air of the uncontaminated environment by enclosing the base of the cartridge with the open end of the protective overcoat, like a gaiter.

[0077] If the respiratory protection is not confined, it is used in the configuration of the step of the figure 11A a fourth cover 33 configured to be arranged on a single ring instead of a third cover 32. This fourth cover 33 must then be replaced by a new fourth cover not contaminated at the stage of the figure 11D .

[0078] Once the extremity protections are confined by the protective overgarments, a protective overgarment is also placed over protective suit 2.

[0079] When the protective clothing and extremity protectors are hermetically contained within the protective overgarments, all contaminated clothing is contained and the extremity protectors 8 can be removed without risk of contaminating the operator's exposed extremities ( figure 11E ).

[0080] THE figures 12A à 12G illustrate different stages of removing protective clothing 2.

[0081] The configuration illustrated in the figure 12A is identical to that of the figure 4 and corresponds to the working configuration. The operator wears the belt 10 under the protective suit 2. The second cover 21 is arranged on the first covers 19 and 20. The second cover 21 makes it possible to protect the second circles, the first covers and the space 22 between the second circles against contamination.

[0082] As illustrated in the figure 12B , the operator removes the second cover 21. Advantageously, a pre-positioning (not illustrated) of the protective overgarments 3, 4 on the lower and upper halves of the belt 10 of the protective suit 2 can be carried out.

[0083] Optionally, an intermediate protection (not shown), for example of the hood type, can be arranged between the second circles 15, 16 so as to protect the space 22 against contamination when putting on the protective overcoats.

[0084] As illustrated in the figure 12C , the operator then removes the first covers 19 and 20, revealing the second circles 15 and 16.

[0085] In a next step ( figure 12D ), the protective overgarments 3, 4 are placed on the lower and upper halves of the protective suit 2 and at least partly on the second circles 15, 16 respectively.

[0086] Preferably, the outer surfaces of the second circles 15, 16 comprise grooves 24 in which the protective overlays 3, 4 are received.

[0087] The first covers 19, 20 are then replaced on the second circles 15, 16 ( figure 12E ), so as to pinch the protective overcoats 3, 4 between the second circles and the first hoods. At this stage, the two halves of the protective suit are hermetically contained in the protective overcoats. The medium 6 between the protective suit 2 and the protective overcoats is confined.

[0088] The operator then proceeds to cut the protective clothing along the space 22 between the first two circles. This space 22 is not contained in the protective outerwear 3, 4. Once the clothing has been cut, the operator proceeds to remove the upper part of the protective clothing ( figure 12F ) with the removal of the assembly comprising the first circle 12 detachable from the belt 10, the second circle 18 and the first hood 20. Alternatively, it can also be the lower part of the protective clothing.

[0089] The lower part of the protective suit, or the upper part if applicable, can then be removed ( figure 12G ), with the assembly comprising the belt 10, the first circle 11, the second circle 17 and the first hood 19.

[0090] Finally, belt 10 ( figure 12H ), which has remained protected from exposure to contamination, can be recovered and reused as part of an undressing kit.

[0091] The undressing method has been described with reference to an operator wearing a protective suit, of the over-suit type, used in combination with separate extremity protectors. The undressing kit 1 then comprises a belt assembly 10 for the protective suit and several sets of rings 30, 31 for the extremity protectors.

[0092] The undressing method also applies to an operator wearing a protective suit of the diving suit type in which the extremity protections are part of the protective suit, with the possible exception of the respiratory protection: in fact, the respiratory protection is typically contained in the diving suit and independent of the latter. In this case, the undressing kit 1 comprises a belt assembly 10 and, if necessary, an assembly comprising a ring 30 and a fourth hood 33 for respiratory protection.

[0093] The invention applies to all operations carried out under protective clothing against contamination. It allows for improved comfort and ease of undressing. It also provides an additional level of safety with regard to the risk of contamination of the operator during the undressing phase. It allows undressing in any location, does not require any prior decontamination, and does not generate effluent or waste resulting from the undressing operation. It can be carried out without any particular weather conditions. It should be noted, however, that the invention is compatible with washing the protective clothing before undressing.

[0094] The invention applies equally to radiological, chemical or industrial contamination, including asbestos, lead and petrochemical contamination.

[0095] Other variations and improvements may be provided without departing from the scope of the invention as defined in the claims.

Claims

1. Kit (1) for undressing from a protective suit (2) for an operator (25), comprising: - a belt (10) configured to be worn by the operator under the protective suit; - at least two first hoops (11, 12) configured to be arranged on an outer circumference of the belt under the protective suit; - at least two second hoops (15, 16) configured to be arranged over the protective suit, the first and second hoops comprising continuous reliefs (13, 14, 17, 18) configured to be mutually nested, when the second hoops are arranged on the first hoops, such that the protective suit is trapped between the continuous reliefs; - at least two first covers (19, 20) configured to each be arranged on one of the two second hoops such that a protective overgarment (3, 4) is trapped between the covers and the second hoops; - a second cover (21) configured to be arranged on the two first covers.

2. Kit according to Claim 1, further comprising at least one first ring (30) configured to be worn by the operator under the protective suit, a second ring (31) configured to be worn by the operator in immediate proximity to the first ring under an extremity protection (8) and a third cover (32) configured to be arranged on the first and second rings so as to trap the protective suit and the extremity protection.

3. Kit according to the preceding claim, the first ring and / or the second ring comprising, on their outer surface, shoulders (34, 35) extending radially outwards defining lateral faces comprising grooves (36).

4. Kit according to one of the preceding claims, the second hoops comprising, on their outer surface, channels (24) .

5. Kit according to one of the preceding claims, the continuous reliefs of the first hoops being tongues arranged on the outer surface thereof and the continuous reliefs of the second hoops being recesses made in the inner surface thereof.

6. Kit according to one of the preceding claims, the belt comprising, on its outer surface, rails (26) configured to hold the first hoops on the belt.

7. Method of dressing an operator in a protective suit, comprising putting in place an undressing kit (1) according to one of Claims 1 to 6, comprising the following steps: a) putting the belt in place around the waist of the operator; b) putting the first two hoops in place on the belt; c) putting the protective suit in place on the operator; d) arranging the two second hoops on the two first hoops over the protective suit so as to trap the protective suit between the first and second hoops; e) arranging the two first covers on the two second hoops; f) arranging the second cover on the two first covers.

8. Method according to the preceding claim, further comprising the following steps: g) putting a first ring in place under one extremity of the protective suit; h) putting a second ring in place in immediate proximity to the first ring; i) putting an extremity protection in place on the operator at said extremity of the protective suit; j) disposing a third cover on the first and second rings so as to respectively trap the protective suit and the extremity protection between the third cover and the first ring, and between the third cover and the second ring.

9. Method for undressing an operator dressed in a protective suit put in place according to the method of Claim 7, comprising the following steps: a') removing the second cover; b') removing the first covers; c') arranging a first protective overgarment at least partly over one of the second hoops and disposing a second protective overgarment at least partly over the other of the second hoops; d') putting the first covers in place on the second hoops so as to trap the first and second protective overgarments between the first covers and the second hoops; e') cutting the protective suit between the two first hoops; f') detaching one of the first hoops from the belt and removing the assembly comprising said first hoop, one of the second hoops, one of the first covers, one of the protective overgarments and a cut-out part of the protective suit; g') removing the assembly comprising the belt, the other first hoop, the other second hoop, the other first cover, the other protective overgarment and the other cut-out part of the protective suit.

10. Method for undressing an operator dressed in a protective suit put in place according to the method of Claim 8, comprising the following steps: h') removing the third cover (32); i') disposing a protective overgarment around the extremity protection and at least partly over the second ring; j') disposing a fourth cover (33) on the second ring so as to trap the extremity protection; k') removing the assembly comprising the extremity protection, the second ring, the fourth cover and the protective overgarment.