WO2006000795A1 - Compartiment d'entree pour un environnement de regulation de la contamination - Google Patents
Compartiment d'entree pour un environnement de regulation de la contamination Download PDFInfo
- Publication number
- WO2006000795A1 WO2006000795A1 PCT/GB2005/002501 GB2005002501W WO2006000795A1 WO 2006000795 A1 WO2006000795 A1 WO 2006000795A1 GB 2005002501 W GB2005002501 W GB 2005002501W WO 2006000795 A1 WO2006000795 A1 WO 2006000795A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tent
- entrance chamber
- chamber according
- opening
- surround
- Prior art date
Links
- 238000011109 contamination Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 description 7
- 239000000383 hazardous chemical Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/0066—Disposal of asbestos
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1277—Shelters for decontamination
Definitions
- This invention relates to an entrance chamber for a contamination control enclosure of the type which may be used with or without a negative pressure environment in the contamination control enclosure, such as may be required when a contamination control enclosure is provided for retaining hazardous substances or materials within the enclosure.
- the most common approach to handling such situations is to create a negative pressure enclosure within the building.
- This may be a room within a building which is sealed to the rest of the building and has an extractor with a fine filter fitted to it, to remove air. Clean air is drawn into this enclosure and air is filtered before being released into the environment by the extraction.
- the weak point of any such enclosure is the point of entry into the enclosure.
- contaminants are not released through the entrance.
- a backdraft can cause contaminants to be released through the entrance, as can the passage of personnel through the entrance.
- Embodiments of the invention may also be used without a negative pressure environment.
- the tent may be made from any impervious fabric.
- the tent may be manufactured from plastics material such as polythene.
- the tent may be disposable.
- the tent may be fire retardant.
- the tent is constructed such that it hangs from the frame and the frame is not exposed to the interior of the tent.
- the tent is of a single piece of construction with sealed seams to prevent contaminants passing through any joins.
- the tent may be constructed as a plurality of chambers each separated by a corresponding opening and surround and a vertically hanging flap.
- Figure 1 shows a frame assembly for use in an embodiment of the invention
- Figure 2 shows the frame of figure 1 slotted through external loops formed in a tent embodying the invention
- Figure 3 shows a side view of an embodiment of the invention with a negative pressure environment in the enclosure to which it is connected
- Figure 4 shows a side view of an embodiment of figure 3 with a failure in the negative pressure environment
- Figure 5 shows an embodiment of a hanging flap and the opening against which it bears
- Figure 6 shows an embodiment of the tent using hook and loop straps and clips for attachment to the frames
- Figure 7 shows an alternative arrangement for attaching the tent to the frame using resiliently stretchable suspension fixings
- Figure 8 shows a frame for an alternative embodiment comprising a hinged collapsible unit.
- a tent is shown connected to the frame of figure 1 by slotting the frame tube through loops 12 as the frame is constructed.
- the loops are formed on the outside of the tent as the frame is assembled.
- Each section 8 of the frame passes through a loop in the exterior of the tent.
- the spacing members 10 may also optionally pass through additional loops.
- the tent is formed from a tube of flexible material such as polythene or from a plurality of panels of polythene which are connected with impervious seals, such as welded seals or glued seals.
- Each section 8 of the frame supports, via its attachment to the tent, a vertically hanging flap 16.
- the vertically hanging flaps may be formed from material of sufficient density to cause them to hang substantially vertically, or alternatively may be of a lighter weight material such as polythene with weights attached to the free end of each flap to cause it to hang substantially vertically.
- Figure 3 shows a side view of the entrance chamber in operation.
- the right hand end of the unit is imperviously sealed to the negative pressure enclosure to which it is to form an entrance an exit. This is done using impervious tape.
- a sheet of e.g. polythene is preferably sealed first to the entrance and the entrance chamber is then sealed to that sheet, and an opening is cut in the sheet.
- a flange of impervious material is attached to the end of the chamber and is fixed to the sheet of polythene with impervious tape. Because there is a negative pressure differential between the enclosure on the right hand side of the entrance/exit chamber and the exterior there is an air flow into the chamber. This causes the four flaps shown in this embodiment to move in the direction of the air flow, thereby permitting air to enter the negative pressure enclosure by lifting the flaps from the vertical position.
- the flaps When there is a failure of the negative pressure environment, the flaps hang down substantially vertically as shown in figure 4.
- the reverse air flow causes the flaps to be pushed closed against the surrounds of the openings they are intending to close, thereby preventing the escape of contaminants.
- An example of a flap 16 and the opening 20 against which it closes is shown in figure 5.
- the flap 16 has a greater area than the opening and therefore it can bear against the surrounding of the opening to close it.
- the flap is suspended from substantially the same position as the attachment of the surround to the top of the tent or to a position on the surround above the opening, but in a place substantially adjacent to the place of the opening.
- the opening 20 and its surround may be positioned at an inclined angle with the top further from the enclosure than the base in the tent with the hanging flap suspended from the top of the surround.
- the weight of the flap will cause it to bear against the surround with more force than it would with a vertical surround, thereby improving the resistance to contaminant release in the event of failure of the negative pressure environment and also make the entrance chamber more suitable for protecting enclosures which do not use negative pressure.
- the hanging flap may be sealed by welding to the tent during manufacture, or alternatively may be provided with an adhesive strip and may be fixed to the tent when it has been positioned on its frame.
- FIG 7. An alternative method for attaching the tent to the frame is shown in figure 7. This uses stretchable and non-stretchable suspension fixings 24 which hook onto the frame.
- Figure 8 shows an alternative frame construction using connected hinged elements. This enables erection and deconstruction from a single complex unit rather than individual tubes. Frame sections are connected by hinges 26. Some form of hook or loop or suspension fixing must be used with such a frame to suspend the tent since the elements of the frame are unable to pass through external loops in the tent.
- the tent may be formed of fire retardant material.
- the tent and frame can be supplied separately with disposable units being put on the frame as required.
- the embodiments show the entrance being provided in a straight line. In some circumstances, it may be preferable to provide e.g. an L-shaped entrance and this can be easily constructed on the same principles as the embodiments shown.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Tents Or Canopies (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0414263.4 | 2004-06-25 | ||
GB0414263A GB0414263D0 (en) | 2004-06-25 | 2004-06-25 | Pre-fabricated disposable contamination control entrance |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006000795A1 true WO2006000795A1 (fr) | 2006-01-05 |
Family
ID=32800186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/002501 WO2006000795A1 (fr) | 2004-06-25 | 2005-06-27 | Compartiment d'entree pour un environnement de regulation de la contamination |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0414263D0 (fr) |
WO (1) | WO2006000795A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2537600A1 (fr) * | 2011-06-24 | 2012-12-26 | Mintie Technologies, Inc. | Unité de confinement environnemental |
WO2015081998A1 (fr) * | 2013-12-04 | 2015-06-11 | Kaercher Futuretech Gmbh | Système d'appareils pour opérations militaires et/ou humanitaires, notamment système de décontamination mobile |
GB2552196A (en) * | 2016-07-13 | 2018-01-17 | Claverend Innovations Ltd | Enclosure |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1636507A (en) * | 1927-07-19 | goodman | ||
GB2165276A (en) * | 1984-09-20 | 1986-04-09 | Paul Spencer Schofield | Enclosure separating two environments |
GB2206612A (en) * | 1987-07-07 | 1989-01-11 | Paul Spencer Schofield | Multi chamber decontamination enclosures |
FR2633963A1 (fr) * | 1988-07-06 | 1990-01-12 | Leroy Jean Paul | Sas d'isolation adaptable et amovible |
GB2323395A (en) * | 1997-03-17 | 1998-09-23 | Plysu Protection Systems Limit | Inflatable structure |
US20040071587A1 (en) * | 2002-10-11 | 2004-04-15 | Mcatarian Patrick F. | Quick setup decontamination stall |
-
2004
- 2004-06-25 GB GB0414263A patent/GB0414263D0/en not_active Ceased
-
2005
- 2005-06-27 WO PCT/GB2005/002501 patent/WO2006000795A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1636507A (en) * | 1927-07-19 | goodman | ||
GB2165276A (en) * | 1984-09-20 | 1986-04-09 | Paul Spencer Schofield | Enclosure separating two environments |
GB2206612A (en) * | 1987-07-07 | 1989-01-11 | Paul Spencer Schofield | Multi chamber decontamination enclosures |
FR2633963A1 (fr) * | 1988-07-06 | 1990-01-12 | Leroy Jean Paul | Sas d'isolation adaptable et amovible |
GB2323395A (en) * | 1997-03-17 | 1998-09-23 | Plysu Protection Systems Limit | Inflatable structure |
US20040071587A1 (en) * | 2002-10-11 | 2004-04-15 | Mcatarian Patrick F. | Quick setup decontamination stall |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2537600A1 (fr) * | 2011-06-24 | 2012-12-26 | Mintie Technologies, Inc. | Unité de confinement environnemental |
WO2015081998A1 (fr) * | 2013-12-04 | 2015-06-11 | Kaercher Futuretech Gmbh | Système d'appareils pour opérations militaires et/ou humanitaires, notamment système de décontamination mobile |
US10170210B2 (en) | 2013-12-04 | 2019-01-01 | Kaercher Futuretech Gmbh | Device system for military and/or humanitarian operations, in particular a mobile decontamination system |
GB2552196A (en) * | 2016-07-13 | 2018-01-17 | Claverend Innovations Ltd | Enclosure |
US10675663B2 (en) | 2016-07-13 | 2020-06-09 | Claverend Innovations Limited | Enclosure for containment of material |
Also Published As
Publication number | Publication date |
---|---|
GB0414263D0 (en) | 2004-07-28 |
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