GB2559536A - Negative pressure enclosure for removing and containing material - Google Patents
Negative pressure enclosure for removing and containing material Download PDFInfo
- Publication number
- GB2559536A GB2559536A GB1615584.8A GB201615584A GB2559536A GB 2559536 A GB2559536 A GB 2559536A GB 201615584 A GB201615584 A GB 201615584A GB 2559536 A GB2559536 A GB 2559536A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enclosure
- waste container
- flexible
- negative pressure
- flexible waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/026—Boxes for removal of dirt, e.g. for cleaning brakes, glove- boxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J21/00—Chambers provided with manipulation devices
- B25J21/02—Glove-boxes, i.e. chambers in which manipulations are performed by the human hands in gloves built into the chamber walls; Gloves therefor
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
An enclosure for containment of material comprises a plurality of structural members 5, 10 defining the enclosure, a negative pressure connector (82, fig 3) for connecting a source of negative pressure to the interior of the enclosure, a flexible waste container (90, fig 2a) attachable to the enclosure and at least one stiffening member 203 attachable to the flexible waste container (90, fig 2a). The enclosure finds use in removing or containing hazardous materials, for example, asbestos. Also disclosed are methods of containing or removing hazardous materials using the enclosure and for isolating an infected animal using the enclosure.
Description
(54) Title of the Invention: Negative pressure enclosure for removing and containing material Abstract Title: Negative pressure enclosure for removing and containing material (57) An enclosure for containment of material comprises a plurality of structural members 5, 10 defining the enclosure, a negative pressure connector (82, fig 3) for connecting a source of negative pressure to the interior of the enclosure, a flexible waste container (90, fig 2a) attachable to the enclosure and at least one stiffening member 203 attachable to the flexible waste container (90, fig 2a). The enclosure finds use in removing or containing hazardous materials, for example, asbestos. Also disclosed are methods of containing or removing hazardous materials using the enclosure and for isolating an infected animal using the enclosure.
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211 .a
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303
FIG. 2b
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FIG 4
Negative Pressure Enclosure for Removing and Containing Material
The present invention relates to enclosures for containment of material, uses of such enclosures and methods for the removal of hazardous materials, especially asbestos, from objects including pipes, tanks, vessels, boilers, machinery and ducts.
The long term danger to health caused by asbestos dust is well known. It is necessary for people to take considerable care to avoid exposure to asbestos dust. By law, asbestos removal must be carried out in a certain way to ensure safety and compliance with government health and safety regulations.
Objects and workpieces have been stripped of hazardous material such as asbestos by enclosing them within a bag having gauntlets enabling an operator to remove the asbestos without directly contacting it. The asbestos falls to the bottom of the bag which is then sealed and removed for disposal.
US-A-5,785,396 describes a glove bag for use in removing asbestos (or other hazardous material) from pipes and other structures such as beams. The bag fits around the structure, and flaps, glue and tape seal the bag around the structure. Gloves are provided for the worker to handle the asbestos and provisions are made for introduction of a wand to spray the material with water.
GB-A-2,349,933 describes an apparatus for treating asbestos lagged pipes comprising two annular spacers which wrap around the pipe and a shroud which is attached to the spacers. The spacers are intended to prevent the shroud from touching the pipe, even under conditions of a vacuum.
GB-A-2,226,878 describes an apparatus for use in removing asbestos from pipes comprising a flexible bag which is mounted on a cage for supporting the bag clear of an area of the pipe to be stripped.
GB-A-2,173,143 describes an enclosure which is partly transparent, having at least three sleeve portions extending into the interior of the device and through which an operator may insert an arm to reach an object positioned within the device. The device is particularly intended for handling asbestos and may be used in stripping asbestos from night storage heaters.
Relatively rigid, portable enclosures are also known for removing asbestos from sills.
However, a problem with methods of removing hazardous material is disposing of the material once removed. Disposal should involve the least amount of packing to enclose the hazardous material and should be safe with reduced chance of hazardous materials being released from the packing. It can be difficult to address these problems not least because the enclosure is usually under negative pressure.
Therefore, there exists a need to provide an enclosure for containing materials, especially hazardous materials such as asbestos, for removal and having an improved means of safely and effectively disposing of the hazardous material once removed.
It is an aim of the present invention to address this need.
The present invention accordingly provides, in a first aspect, an enclosure for containment of material, the enclosure comprising:
a plurality of structural members defining the enclosure, a negative pressure connector for connecting a source of negative pressure to the interior of the enclosure, a flexible waste container attachable to the enclosure, and at least one stiffening member attachable to the flexible waste container.
It is preferred that the at least one stiffening member is attachable to the outside of the flexible waste container so that it is separated from the material contained within the enclosure and/or flexible waste container and may thus be optionally re-used in safety.
The enclosure is preferably for containment and removal of hazardous material 25 from objects. The enclosure may be used in particular for containment and removal of hazardous material from pipes.
Since, the enclosure, in use, is a negative pressure enclosure (i.e. the pressure inside the enclosure is less than atmospheric pressure) the enclosure is better at containing material, even loose and particulate material, within the enclosure.
The stiffening member (or stiffening members) reduces or prevents distortion and 5 stretching of the flexible waste container under negative pressure (which would otherwise make it difficult for the user to effectively work to remove the hazardous material, especially asbestos, and contain the removed material in the flexible waste container).
The optional arrangement wherein the stiffening member or members is attachable to the outside of the flexible waste container is advantageous because the stiffening member(s) are not then in contact with the hazardous material, so that the stiffening members do not become contaminated with material.
The stiffening members may be manufactured from any suitable material, such as a plastic (e.g. PVC) or metal (e.g. aluminium). Preferably, the members are manufactured from metal and more preferably aluminium. The advantage of using aluminium is that it is strong and relatively rigid (and so can support the waste container under tension, and provides rigidity), and it is low cost and of relatively low density.
Preferably, the enclosure comprises a re-sealable waste port, preferably a resealable waste port, for attaching the flexible waste container.
The flexible waste container may be sealed to the waste port by any suitable air20 tight sealing method, such as by a zip fastener (preferably an air-tight zip fastener), welding, adhesive tape and/or glue. The seal between the flexible waste container and the waste port may be further covered in an extra layer of flexible material, such as PVC, to add further protection from the release of asbestos fibres between the waste port and the outside environment. Thus, preferably the flexible waste container is of double thickness to better contain material.
Preferably, the flexible waste container is sealable and may be sealed when sufficient hazardous waste is contained therein. This is advantageous, as it reduces the chances of spillage or release of hazardous material. The sealing method for sealing the flexible waste container may be a zip fastener (preferably an air-tight zip fastener), welding, adhesive tape and/or glue.
Preferably, the flexible waste container comprises a flexible pocket and at least one attachment portion for attaching the or each stiffening member.
Preferably, the flexible pocket comprises PVC. The use of PVC is advantageous as it may be transparent and chemically resistant. Alternatively, the flexible pocket may comprise polyurethane or a fluorinated polymer.
Preferably, the flexible pocket is single use and may be sealed and safely disposed of after use with the hazardous material contained therein.
Usually, the flexible waste container comprises two or more attachment portions, preferably three or more attachment portions, more preferably four or more attachments portions, even more preferably five or more attachment portions and most preferably six or more attachment portions.
One preferred embodiment is wherein at least one of the attachment portions comprises an attachment sleeve or tab. This is particularly useful, when at least one stiffening member comprises a bar for insertion in an attachment sleeve.
It is often advantageous that the flexible waste container comprises at least one base attachment portion on the base of the flexible waste container. This reduces the tendency of the flexible pouch to distort under conditions of negative pressure.
Preferably, the enclosure is maintained under negative pressure and thus the enclosure preferably comprises a negative pressure connector for connecting a source of negative pressure (e.g. vacuum pump) to the interior of the bag.
A convenient and useful negative pressure generator would be portable, preferably battery-powered, for example, a battery-powered small fan (e.g. respirator fan). Battery25 powered fans are advantageous because they do not require power leads (and can therefore be used where mains/reticulated supply of electricity is not available) and are compact.
Preferably, the negative pressure connector is associated (or comprises) a filter, preferably a P3 filter, most preferably a high-efficiency particulate arrestance (HEPA) filter. Thus, preferably, the negative pressure connector comprises a particulate filter, preferably a HEPA filter.
The enclosure may preferably further comprise a valve to allow air to enter the enclosure under conditions of excessive negative pressure. Preferably, the valve is a oneway valve, more preferably an adjustable flow valve. Excessive negative pressure is a negative pressure greater or much greater than that required to prevent the escape of material from the enclosure should a small leak in the enclosure occur. The use of a valve is advantageous, because excessive negative pressure can cause the material of the flexible waste container or enclosure to deform and potentially split.
Usually, the enclosure, when in use, would be under negative pressure (i.e. pressure less than ambient) of up to 1 inch water (250 Pa) preferably up to 0.5 inch water (125 Pa).
The enclosure may comprise a bag or plurality of enclosure panels attachable to a structural frame by a plurality of attachment fixings, whereby the frame is outside the bag/enclosure panels.
Thus in a second aspect, the present invention provides, an enclosure for containment of material, the enclosure comprising:
a frame comprising a plurality of bars and a plurality of joints, each joint being releasably connectable to at least two bars, a bag (preferably a flexible bag) attachable to the frame, the bag being at least in part transparent, and comprising a re-sealable seam, a flexible waste container attachable to the enclosure, and at least one stiffening member attachable to the flexible waste container.
The frame may comprise bars which are releasably connected together using joints. Each joint may comprise two or more bar supports in to which bars may be placed. The bars are releasably connected together using the joints, so the frame can be easily assembled and disassembled. A further advantage of the joints is that the frame may be reused (especially since the frame is preferably outside the bag), and the frame may be quick and easy to install without having too many elements.
The bars may generally have any cross-sectional area shape, for example 5 substantially circular, square or triangular. Preferably, the cross-sectional area of the bars is substantially circular. This is advantageous because a bar with a circular cross section has relatively low manufacturing costs, does not have any sharp edges that may damage the bag, and is strong under tension.
Further, the cost of manufacturing joints with a corresponding bar supports for 10 receiving or fixing to circular cross sections is relatively low (compared to other shapes such as square or triangular) and such bar supports are strong.
The joints connect the bars of the frame to one another. The use of such joints is advantageous as the shape of the enclosure may be easily modified (and therefore adaptable to different sizes and shapes of object to be contained).
The joints may be manufactured from any suitable material which provides a strong support for the bar. Preferably, the joints are manufactured from a polymer such as nylon, high density polypropylene or polyethylene. Most preferably, the joints are manufactured from polypropylene.
The bar may be firmly fixed on the joint. In this case, the joint may connect to the bar using any suitable firm attachment method, such as a screw fit, a depressible pin and socket fit, or push fit (for example, in which the joint has a series of outwardly extending ribs which frictionally engage with the inside surface of the bar).
A push fit attachment method is relatively low cost to manufacture, very little manipulation of the bars and joints is required in order to assemble the frame, and there are no sharp edges that may damage the bag.
Alternatively, the bar may be held less firmly by the bar support. When the cross section of the bar and bar support is circular, the bar may be able to rotate on the bar support. In this case, the bar supports should be long enough so that they extend sufficiently far into the bar end to prevent the bars from coming away from the joints when the enclosure is assembled.
Preferably, the bar would be connected to the joint using a bar support with a male or female fitting at one end and a male or female thread at the other, the thread engaging with a female or male thread of the adjustable joint.
The bag may comprise any flexible material, which is at least in part transparent so that the user can see inside the bag to remove the hazardous material from the pipe.
The bag should preferably be made with the minimum number of joins or seams and most preferably from one piece of material (it is desirable to minimise the number of joins, as each join can potentially create a weak point in the bag to allow the escape of material and/or splitting of the bag).
Any joins or seams in the bag may be joined to form an air tight seal by any suitable sealing method. For example, the seams may be sealed with one or more of zip fastener, glue or welding. When the bag is made of PVC, preferably the sealing method is welding, more preferably high frequency welding.
The bag may comprise a re-sealable seam, so that the bag can be wrapped around an object (e.g. a pipe) that may be to be contained. The method of sealing the bag may be any suitable method by which an air tight seam is achieved, for example one or more of a zip fastener, welding, or glue. Preferably, the re-sealable seam comprises an air-tight zip fastener, as this is a quick and convenient method for sealing the bag for the user.
The enclosure according to the second aspect may comprise adjusting devices may be used to tighten the bag on the frame once the enclosure has been assembled. A bag which is held taut on the frame is particularly advantageous under conditions of negative pressure inside the bag, because the bag will have less tendency to stretch or distort, or move around if the pressure within the bag changes (at least to a far lesser extent than if the bag was not held tight on the frame). The bag is therefore more stable and allows the user to work more quickly and effectively.
The adjusting device may comprise a mechanism (such as a screw, or ratchet) which increases the length of at least part of the frame, thereby causing the bag to tighten.
The adjusting device may be part of the bars and/or the joints of the frame. Thus, at least one bar may comprise the at least one adjusting device. Additionally, or alternatively, at least one joint may comprise the at least one adjusting device.
Usually, each joint (or alternatively each bar of the frame) may comprise an 5 adjusting device so that each face (e.g. at least one face, at least two faces, at least three faces or at least four faces) of the enclosure may be tightened.
Preferably, the adjusting device is formed as part of the joints. This is advantageous as there are fewer parts to assemble when constructing the enclosure, thereby saving time and associated costs.
Preferably, the adjusting device comprises a screw mechanism. Once the bag has been assembled on the frame, a key may be used to turn and lengthen the screw thread (and thereby move the screw thread out of the screw thread sleeve) which in turn increases the overall length of part of the frame. This causes the bag to stretch on the frame and become taut.
Rather than using a key to lengthen the screw thread of the adjusting device, the screw thread may be such as to have a handle or knob to be gripped by hand and turned.
If the bar is firmly attached to a bar support, so that the bar cannot rotate on the bar support, the direction of the screw thread at one end of the bar (e.g. clockwise) is preferably opposite to the direction of the screw thread at the opposing end of the same bar (e.g. anticlockwise). That is, a bottle screw mechanism may be used so that when the screw thread at one end of the bar is turned, the direction of the screw thread at the opposing end may turn in the opposing direction so that the overall length of the frame increases.
Alternatively, the bar may comprise a rotatable joint at a point along its length to allow one half of the bar to rotate with respect to the other half of the bar as the screw thread is turned.
If the bar is not firmly fixed to the joint and the bar support is able to rotate within the bar (the cross section of the bar and bar support is circular), the direction of the screw thread at opposing ends of the bar can be the same or opposite. That is, when the screw thread at one end of the bar is turned, the bar would not rotate and the screw thread at the opposing end of the bar would not turn.
In the case where the bar is not firmly fixed to the joint, the bar supports will need to be long enough to extend sufficiently far into the bar to prevent the bar from detaching from the joints when the enclosure is assembled and extended.
Each bar support and/or joint of the frame may comprise an adjusting device, so that each end of each bar may be lengthened and the bag may be evenly tightened over the whole frame. This is advantageous, as the stretching force on the bag is evenly distributed and the bag is not put under unnecessary stress in one area (which would make that area of the bag more susceptible to tears or splits).
The joints may further comprise extension sockets to allow the shape of the enclosure to be modified and/or extended.
Preferably, the extension sockets may be part of the joints and allow further bars to be inserted onto the joints. This allows the enclosure to be enlarged to accommodate longer pipes or to be modified to accommodate bends or T-sections in the pipe to be treated.
The enclosure preferably further comprises at least one hand pocket or gauntlet to allow an operative to access the material to be contained within the bag. Preferably, the material of the hand pockets is flexible and provides the user with sensitivity of feel, thereby increasing the user’s working efficiency. The hand pockets may be made of any suitable material, for example. PVC.
One particularly important use for the enclosures of the present invention is to contain an elongate object such as a beam or pipe that may be lagged with asbestos whilst the asbestos is removed from the object, usually a pipe. Thus, preferably, the enclosure may further comprise at least two supports, preferably at least two pipe supports to support a pipe extending in the enclosure. The bag may comprise the supports. For example, the bag may comprise at least one support comprising a re-sealable aperture in the bag to support a pipe extending through the enclosure.
Such a support may contact the pipe and should create an air-tight seal between the bag and the pipe to be treated. Any suitable sealing method may be used. Preferably, the supports may comprise adjustable ties, which can be pulled tight to form an airtight seal around the pipe. The adjustable ties may preferably comprise a ratchet mechanism, (preferably with sealing means so that the seal may be airtight) or a cam tightening and/or locking mechanism.
The seams of the bag of the present invention may be welded together. Suitable methods of welding may include hot gas welding, high frequency welding and/or hot plate welding.
The present invention provides, in a third aspect, use of an enclosure according to the first aspect, for the removal and containment of hazardous material from an object. Such hazardous material may comprise asbestos, radioactive material, chemically reactive material, biohazardous material (for example bacteria or viruses that may be contagious and/or infectious) and/or materials which are otherwise toxic to organisms or damaging to the environment.
The present invention provides in a fourth aspect, a method for removal of hazardous material from an object, the method comprising:
providing an enclosure according the first or second aspect, placing the enclosure at least partly around the object, attaching the flexible waste container to the enclosure and attaching at least one stiffening member to the flexible waste container, connecting a source of negative pressure to the negative pressure connector and applying negative pressure to the inside of the enclosure removing the hazardous material from the object and depositing the hazardous material in the flexible waste container, optionally, sealing the flexible waste container.
Preferably, the method further comprises the step of applying a wetting liquid to the hazardous material prior to removing the hazardous material from the object. This is advantageous because wetted materials (especially wetted asbestos fibres) tend to remain stuck together with less chance of becoming airborne (airborne asbestos fibres pose a serious health and safety risk). The wetting solution may comprise any solution which can be applied to the material. For example, the wetting solution may comprise an aqueous solution of a glue and/or a surfactant.
In use, preferably, the enclosure is connected to a source of negative pressure during a removal/stripping operation. The source of negative pressure may be continuous, periodic or applied as necessary by the user. Preferably, the source of negative pressure is continuous.
The present invention provides in a fifth aspect, a method for isolating an animal (e.g. a human or non-human animal) having an infectious and/or contagious disease, the method comprising: providing an enclosure according to the first or second aspect, placing the enclosure at least partly around the animal.
An embodiment of the present invention will now be described with reference to the following figures, in which:
Figure 1 shows a perspective view of an embodiment of the enclosure of the present invention assembled around a pipe.
Figure 2a shows a schematic view of an embodiment of the flexible waste container,
Figure 2b shows a schematic view of another embodiment of the flexible waste container,
Figure 3 shows a perspective view of part of the enclosure of Figure 1, showing 25 the hand pockets.
Figure 4 shows a perspective view of part of the enclosure of Figure 1, showing the position of waste port and flexible waste container.
Referring to Figure 1, the enclosure 1 comprises a frame 5 comprising joints 10 at each corner and bars 15 between the joints and along each edge of the enclosure. The bag 20 includes a re-sealable seam 25 along its length on the upper surface, which when open enables the bag to be arranged around the pipe 30 requiring treatment for asbestos removal. Once the bag is in position around the pipe, the re-sealable seam 25 is closed.
The bag 20 is supported on the frame by way of sleeves 35 arranged along the length of each side of the bag. In use, the frame may be supported by a structure. Pipe supports 40 enable the bag to be sealed around the pipe. Ties 45 are used to seal the bag around the circumference of the pipe at opposing ends of the enclosure. The ties are tightened over the circumference of the pipe using a ratchet mechanism device 50 to ensure that the seal between the bag and pipe is sufficiently tight to prevent the loss of any asbestos fibres during and after treatment.
A liquid port 42 on the upper surface of the bag 20 is provided so that wetting liquid may be directed at a workpiece inside the enclosure 2 so as to reduce the amount of particulates of the hazardous material being released.
Inside the enclosure 2, there may be a tool pouch (not shown) attachable to the frame 5 or bag 20 to hold tools for use during removal of the hazardous material.
Referring to Figure 1 and Figures 2a, a flexible waste container 90 is attached to the bag 20 of the enclosure 1 by means of a flexible waste port rim 209 on base of the enclosure. The flexible waste container 90 comprises a flexible pouch 201 that may be made of sheet PVC, polyurethane or fluoropolymer sheet material. The flexible waste container 90 also comprises sleeve attachments 207 (that may be made of the same material as the flexible pouch 201) for attachment to stiffening bars 203 which act to stiffen the flexible pouch 201 especially under conditions of negative pressure. The flexible waste container 90 also has base sleeve attachments 211 for receiving base stiffening bars 205 and further increasing the rigidity of the flexible waste container 90 under negative pressure.
When the flexible waste container 90 is full, it may be sealed by a sealing device (not shown in Fig 1 or Fig 2a) on the flexible pouch 201 such as a zip fastener, welding, adhesive tape and/or glue. The stiffening bars 203, 205 may be removed and the flexible waste container 90 disposed of safely. Because it is flexible and has been under negative pressure the space taken up by the flexible waste container 90 is minimised.
Figure 2b shows an alternative embodiment of a flexible waste container. The flexible waste container 190 contacts the base of the enclosure (not shown in Figure 2b) by means of a flexible waste port rim 309 in the form of a ring. The flexible waste container 190 comprises a flexible pouch 301 that may be made of sheet PVC, polyurethane or fluoropolymer sheet material. The flexible waste container 190 also comprises sleeve attachments 307 (that may be made of the same material as the flexible pouch 301) for attachment to five axial (i.e. arranged around the axis of the flexible waste container 190) stiffening bars 303 which act to stiffen the flexible pouch 301 especially under conditions of negative pressure. The flexible waste container 190 also has base sleeve attachments 311 for receiving base stiffening ring 305 and further increasing the rigidity of the flexible waste container 190 under negative pressure. The stiffening bars
303 are each connected to the flexible waste port rim 309 and base stiffening ring 305 by means of clips 304 fixed to the ends of each stiffening bar 303.
When the flexible waste container 190 is full, it may be sealed by a sealing device (not shown in Fig 2b) on the flexible pouch 301 such as a zip fastener, welding, adhesive tape and/or glue. The stiffening bars 303, rings 309, 305 may be removed and the flexible waste container 190 disposed of safely.
Referring to Figure 3, the bag comprises hand pockets or gauntlets 80, which enable the operator to reach inside the enclosure and remove the hazardous materials (e.g. asbestos) from the workpiece (e.g. pipe) without coming into direct contact with the hazardous material. On the side surface of the bag 20, there is a negative pressure port 82 for attachment of a pump (not shown) or other source of negative pressure. The negative pressure port 82 will usually comprise a HEPA filter (not shown). Suitable pumps for generating negative pressure are portable (preferably battery-powered so there are no power leads) pumps, for example, respirator pumps.
Referring to Figure 4, the position of the waste port 85 and flexible waste container 90 for collecting the asbestos once removed from the pipe is shown on the bag 20.
Reference Numerals enclosure frame joint bar bag re-sealable seam pipe sleeve pipe support liquid port tie ratchet mechanism adjusting device screw thread screw thread sleeve bar support extension socket hand pockets negative pressure port waste port flexible waste container
201 flexible pouch
203 stiffening bar
205 base stiffening bar
207 sleeve attachment
209 flexible waste port rim
211 base sleeve attachment
190 flexible waste container
301 flexible pouch
303 stiffening bar
304 clip
305 base stiffening ring
307 sleeve attachment
309 flexible waste port rim
311 base sleeve attachment
Claims (21)
1. An enclosure for containment of material, the enclosure comprising:
a plurality of structural members defining the enclosure,
5 a negative pressure connector for connecting a source of negative pressure to the interior of the enclosure, a flexible waste container attachable to the enclosure, and at least one stiffening member attachable to the flexible waste container.
10
2. An enclosure according to claim 1, wherein at least one stiffening member is attachable to the outside of the flexible waste container.
3. An enclosure according to either claim 1 or claim 2, wherein the enclosure is for containment and removal of hazardous material from objects, in particular pipes.
4. An enclosure according to any one of the preceding claims, wherein the enclosure comprises a re-sealable waste port for attaching the flexible waste container.
5. An enclosure according to any one of the preceding claims, wherein the flexible 20 waste container comprises a flexible pocket and at least one attachment portion for attaching the or each stiffening member.
6. An enclosure according to claim 5, wherein the flexible waste container comprises two or more attachment portions, preferably three or more attachment portions, more preferably four or more attachments portions, even more preferably five or more attachment portions and most preferably six or more attachment portions.
7. An enclosure according to either claim 5 or claim 6, wherein at least one of the
5 attachment portions comprises an attachment sleeve.
8. An enclosure according to claim 7, wherein the at least one stiffening member comprises a bar for insertion in an attachment sleeve.
10
9. An enclosure according to any one of claims 5 to 8, wherein the flexible waste container comprises at least one base attachment portion on the base of the flexible waste container.
10. The enclosure according to any one of the preceding claims, wherein the enclosure
15 further comprises at least one hand pocket to allow an operative to access the material to be contained in the enclosure.
11. An enclosure according to any one of the preceding claims, wherein the negative pressure connector comprises a particulate filter, preferably a HEPA filter.
12. An enclosure according to any one of the preceding claims, wherein the enclosure further comprises a valve to allow air to enter the enclosure under conditions of excessive negative pressure, preferably a one-way valve.
25
13. An enclosure for containment of material, the enclosure comprising:
a frame comprising a plurality of bars and a plurality of joints, each joint being releasably connectable to at least two bars, a bag attachable to the frame, the bag being at least in part transparent, and comprising a re-sealable seam,
5 a flexible waste container attachable to the enclosure, and at least one stiffening member attachable to the flexible waste container.
14. Use of an enclosure according to any one of claims 1 to 13, for the removal and containment of hazardous material from an object.
15. Use according to claim 14, wherein the hazardous material comprises asbestos, radioactive material, chemically reactive material, biohazardous material, and/or material which is toxic to organisms or harmful to the environment.
15
16. A method for removal of hazardous material from an object, the method comprising:
providing an enclosure according to any one of claims 1 to 13 having the flexible waste container attached to the enclosure and at least one stiffening member attached to the flexible waste container.
20 placing the enclosure at least partly around the object, connecting a source of negative pressure to the negative pressure connector and applying negative pressure to the inside of the enclosure removing the hazardous material from the object and depositing the hazardous material in the flexible waste container,
25 optionally, sealing the flexible waste container.
17. A method according to claim 16, further comprising the step of applying a wetting liquid to the hazardous material prior to removing the hazardous material from the object.
5
18. The method according to claim 17, wherein the wetting liquid comprises an aqueous solution of a surfactant.
19. A method according to any one of claims 16 to 18, wherein the object is a pipe.
10
20. A method according to any one of claims 16 to 19, wherein the hazardous material comprises asbestos.
21. A method for isolating an animal having an infectious and/or contagious disease, the method comprising:
15 providing an enclosure according to any one of claims 1 to 13, placing the enclosure at least partly around the animal.
Intellectual
Property
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Application No: Claims searched:
GB1615584.8
1-21
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1615584.8A GB2559536A (en) | 2016-09-14 | 2016-09-14 | Negative pressure enclosure for removing and containing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1615584.8A GB2559536A (en) | 2016-09-14 | 2016-09-14 | Negative pressure enclosure for removing and containing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201615584D0 GB201615584D0 (en) | 2016-10-26 |
| GB2559536A true GB2559536A (en) | 2018-08-15 |
Family
ID=57234444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1615584.8A Withdrawn GB2559536A (en) | 2016-09-14 | 2016-09-14 | Negative pressure enclosure for removing and containing material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2559536A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD975310S1 (en) | 2022-04-26 | 2023-01-10 | Mycrun Tek, Inc. | Sterile work box |
| RU226765U1 (en) * | 2023-05-31 | 2024-06-20 | Закрытое Акционерное Общество "Ламинарные Системы" | Negative Pressure Isolator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4765352A (en) * | 1987-07-17 | 1988-08-23 | Strieter Jerome F | Portable isolation enclosure for use in cleaning contaminated environments |
| US4812700A (en) * | 1983-10-20 | 1989-03-14 | Gpac, Inc. | Portable containment device for treatment of hazardous materials |
| GB2552196A (en) * | 2016-07-13 | 2018-01-17 | Claverend Innovations Ltd | Enclosure |
-
2016
- 2016-09-14 GB GB1615584.8A patent/GB2559536A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812700A (en) * | 1983-10-20 | 1989-03-14 | Gpac, Inc. | Portable containment device for treatment of hazardous materials |
| US4812700B1 (en) * | 1983-10-20 | 1991-08-13 | Gpac Inc | |
| US4765352A (en) * | 1987-07-17 | 1988-08-23 | Strieter Jerome F | Portable isolation enclosure for use in cleaning contaminated environments |
| GB2552196A (en) * | 2016-07-13 | 2018-01-17 | Claverend Innovations Ltd | Enclosure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD975310S1 (en) | 2022-04-26 | 2023-01-10 | Mycrun Tek, Inc. | Sterile work box |
| USD983991S1 (en) | 2022-04-26 | 2023-04-18 | Mycrun Tek, Inc. | Sterile work box |
| RU226765U1 (en) * | 2023-05-31 | 2024-06-20 | Закрытое Акционерное Общество "Ламинарные Системы" | Negative Pressure Isolator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201615584D0 (en) | 2016-10-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |