EP2848549A1 - Récipient de stockage - Google Patents

Récipient de stockage Download PDF

Info

Publication number
EP2848549A1
EP2848549A1 EP14184911.7A EP14184911A EP2848549A1 EP 2848549 A1 EP2848549 A1 EP 2848549A1 EP 14184911 A EP14184911 A EP 14184911A EP 2848549 A1 EP2848549 A1 EP 2848549A1
Authority
EP
European Patent Office
Prior art keywords
locking
storage container
lid
handle
shoulders
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Withdrawn
Application number
EP14184911.7A
Other languages
German (de)
English (en)
Inventor
Darold Popish
Fred L. Popish
Terry Wickland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuclear Filter Technology Inc
Original Assignee
Nuclear Filter Technology Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nuclear Filter Technology Inc filed Critical Nuclear Filter Technology Inc
Publication of EP2848549A1 publication Critical patent/EP2848549A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/28—Handles
    • B65D25/2835—Swingable handles
    • B65D25/2858—Swingable handles provided on a local area of the upper (top) wall, e.g. U-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/14—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars
    • B65D51/145—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars by means of an additional element connected directly to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/82—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for poisons
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/002—Containers for fluid radioactive wastes
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/14—Devices for handling containers or shipping-casks, e.g. transporting devices loading and unloading, filling of containers

Definitions

  • the present invention relates to storage containers. More particularly, the present invention relates to storage containers especially useful for storing radioactive materials, such as but not limited to, plutonium in the form of oxides and salts, as well as in other forms.
  • radioactive materials such as but not limited to, plutonium in the form of oxides and salts, as well as in other forms.
  • Plutonium is a man made radioactive element, which is used as an explosive ingredient in nuclear weapons as well as a fuel for nuclear reactors. It has the important nuclear property of being readily fusionable with neutrons and is available in relatively large quantities. Caution must be exercised in handling plutonium to avoid unintentional formation of a critical mass. Plutonium in liquid solutions is more apt to be critical than solid plutonium so it also very important to avoid unintentional creation of a liquid solution. Since plutonium is considered to be highly carcinogenic, it is important that plutonium in any form be contained so as not to escape into the surrounding environment where it can be inhaled or otherwise ingested by humans or other living beings. Frequently, plutonium oxides and salts are in the form of powders which require very special handling to ensure that particles do not become suspended in the air and liquid does not come into contact with the powders. Optionally, such containers are vented through high efficiency particle filters.
  • a storage container for hazardous material such as radioactive material, comprises a can body having a cylindrical side wall with a closed bottom wall, defining a space for containing the hazardous material.
  • a rim is disposed at an open top of the can body, the rim having an annular land and a locking collar is welded to the rim adjacent the annular land.
  • the locking collar has grooves with arcuate shoulders, the grooves having spaces therebetween and the arcuate shoulders defining arcuate locking grooves therebeneath and having spaced locking apertures therein.
  • a lid is configured for receipt within the locking collar, inboard of the arcuate locking grooves. The lid has a sealing arrangement for sealing the lid with respect to the space defined by the can body.
  • a locking ring is mounted on the lid in fixed relation to the lid, the locking ring having spaced locking tabs for positioning in the locking grooves beneath the arcuate locking shoulders.
  • a handle is attached to the locking ring for rotating the locking ring to position the locking tabs in the locking grooves beneath the locking shoulders.
  • a latch biased to the closed position is associated with the handle.
  • the latch is a spring biased pin engaging a locking hole in the locking collar to prevent the locking ring from rotating with respect to the locking collar.
  • the container 10 includes a can body 12, a locking collar 14, a locking ring 16, a lid 18 and a pivoted handle 20.
  • the pivoted handle 20 is pivoted from the Fig. 1A and 1B position for storage to the Fig. 2 position for locking and unlocking the lid 18 in place on the can body 12 and for lifting the storage container 10.
  • the can body 12 is preferably light weight steel having a thickness of about 0.029 inches so that assay equipment, which is calibrated for this thickness, is calibrated for the stainless steel wall of the can body.
  • the storage container 10 is enclosed in a pewter shielding overpack 21.
  • the storage containers 10 are in five or ten gallon sizes.
  • FIGs. 3A-3C closing, locking and opening the storage container 10 with the lid 18 is illustrated by the arrows 21A and 21 B.
  • the handle 20, locking ring 16 and lid 18 form a closure assembly 22 that closes a top opening 24 of the can body 12.
  • the top opening 24 in the can body 12 is closed by lowering the closure assembly 22 along the axis 25 of the cam body in the direction of arrow 21 A to close the top opening 24.
  • the lid assembly 22 is within the locking collar 14.
  • a spring projected latch 30 projects into one of several holes in the locking collar 14 to lock the lid assembly 22 to the locking collar 14 and thus to the can 12.
  • the storage container 10 formed by the locked can 12 and the locking assembly 22 is thus ready to be safely carried by the handle 20.
  • the lock 30 has a spring projected pin which indicates when locking has occurred.
  • the steps are reversed.
  • the spring biased lock 30 is opened by pressing a thumb plate 34 in the direction of arrow 21B.
  • the handle 20 is rotated in the counter clockwise direction 21 B to unlock the lid 18 from the locking collar 14 of the can body 12.
  • the lid assembly 22 is removed by lifting the assembly 22 with the handle 20 up in the direction of arrow 21B.
  • a lid closure assembly 22 which is simple to use and has a pin which snaps into a closed and locked position so as to give the operator a clear visual indication that there is a positive seal.
  • pewter shielding 21 fits over the can body 12 of the storage container 10 and is held in place by clips 38 that have a detent end 39 that seat within a groove 40 defining a ridge 41.
  • the ridge 41 is disposed between the can body 12 and the locking ring 14 which is welded to the can body 12.
  • the locking ring 16 has drain slots 42 that allow liquid to drain from the lid 18.
  • the lid 18 also includes a filtered vent 44 that allows vapor and gas to escape from the storage container 10.
  • the can body 12 has a closed bottom 50 and a cylindrical sidewall 52 that defines the top opening 24 at a rim 56.
  • the can body 12 is deep drawn of stainless steel that is chosen for its corrosion resistance strength and weight.
  • the can is drawn from 22-guage stainless steel and has a thickness of about 0.03 inch (preferably 0.029 inch), which is identical to the original nuclear material cans (NMC's) so that dosimetry equipment does not require recalibration.
  • NMC's nuclear material cans
  • the deep drawn can bodies 12 are identical to the original NMC's wherein each size container has been designed to fit into the next larger size to assure proper nesting.
  • Each storage container 10 is laser etched with indicia at 58 that includes a serial number and barcode.
  • the locking collar 14 is machined from stainless steel and is laser welded at it's lower edge 60 to the rim 56 of the cylindrical wall 52 that defines the can body 12 ( Fig. 4 ).
  • a collar portion 62 extends upwardly from the lower edge 60 and has therein plurality of locking slots 64 which receive a spring biased locking pins from the locking pin arrangement 30 on the handle 20 (see Figs. 1A-3C ).
  • the locking slots 64 also provide the aligned slots 43 for liquid drainage seen in Figs. 2 and 3A-3C .
  • the locking slots 64 are in alignment with locking shoulders 66 that are spaced from one another by reception grooves 68 for receiving locking tabs which extend from the locking ring 16 (see 100, Fig.
  • O-ring surfaces 70 and 72 provide precision machined surfaces that abut axially facing and radially facing seals on the lid 18 to create a containment boundary for the contents of the storage container 10.
  • the locking collar 14 is designed for allowing two passes of laser welding to attach the locking collar to the can body 12. Laser welding introduces less heat into these components and thus minimizes warping. Utilizing two welds strengthens the attachment and ensures containment of the hazardous substance in the can body 12.
  • the lid 18 for enclosing the storage container 10 has a circular periphery 80 having a peripheral converging groove 82 therein which receives a primary seal gland 84. Adjacent to the periphery 80, is an axially facing converging groove 86 that receives a face seal gland 88.
  • the primary seal gland 80 seals radially with the axially extending, O-ring surface 72 on and the axially facing, face seal gland 88 seals radially with the radially extending, O-ring surface 70 on the ring 14 of Fig. 5 .
  • An annular seal protector 89 is positioned inboard of the face seal gland 88 to protect the face seal gland when the lid 14 is set down on another surface during maintenance or loading so that the lid 18 will rest on the seal protector 89 rather than on the face seal gland.
  • the primary seal gland 80 is made of VITON TM which has high radiation resistance while providing excellent sealing properties.
  • the face seal gland 88 is made of low durometer silicon that has high chemical resistance properties.
  • the locking ring 16 has four locking tabs 100 separated by spaces 102 on the outer periphery of the locking ring 16.
  • Oppositely disposed lugs 108 and 110 are positioned on the inner periphery 112 of the locking ring and have holes 114 and 116 therein for receiving a handle pin and locking pin which extend from the handle 20 of Fig. 8 .
  • the hole 114 extends completely through the lug 108 so that the locking pin may project behind the locking ring 16 to the locking collar 14 of Fig. 5 and enter one of the locking slots 64 beneath the locking shoulders 66 of the locking collar 14.
  • a stop 117 prevents over rotation of the locking ring 16.
  • Water shedding drain slots 42 extend completely through the locking ring 16 to allow water accumulating on the lid 18 to drain therefrom and out of the aligned slots 43 in the locking collar 14 that also serve as the locking slots 64.
  • the handle 20 is used to open and close the storage container 10, as well as to provide a positive locking device with a spring projected locking pin 130 that is a portion of the locking pin arrangement 30 and has the tab 34 fixed thereto.
  • the locking pin 130 is spring projected by a coil spring 132.
  • the tab 34 allows one to retract the locking pin 130 against the bias of the spring by pressing the tab 34 with their thumb.
  • the locking pin 130 is also a pivot which cooperates with a handle pin 134 to allow the U-shaped portion 136 of the handle 20 to pivot when the locking pin 130 and handle pin 134 are positioned in the bores 114 and 116 of the lugs 108 and 110 of the locking ring 16, (see Fig.7 ). As is seen in Figs.
  • the handle 20 is configured to fold in either direction to lie within the locking ring 16 for storage and to extend upwardly from the lid 22 for carrying the storage container 10.
  • the handle 20 is also used for opening and closing the storage container 10 and for positively locking the storage container with the spring biased locking pin 130.
  • the thumb tab 34 is pulled back by thumb engagement to retract the operating pin 130 so that the operating pin can disengage from the locking slot 64 ( Fig. 5 ) in which it is received.
  • the locking pin 130 and handle pin 134 are configured to provide smooth rotation of the handle 20 while simultaneously providing enough friction to keep the handle 20 from being loose.
  • the locking pin 130 and handle pin 134 have diameters which provide a safety factor of at least three against shear stresses created during lifting.
  • the handle 20 is formed of stainless steel tube and has as few machined parts as necessary. Because the handle has symmetry, identical operation of both left and right hand operators is provided.
  • the filtered vent 44 seats in the hole 45 in the can lid 22 ( Fig. 6 ).
  • the filtered vent 44 is comprised of a filter media 150 having an inner side 152 and an outer side 154.
  • the filter media 150 provides venting of the storage container 10 while maintaining a minimum of 200ml/min of air at no more than one inch water column and captures 99.97% of 0.45 micron mass mean diameter DOP aerosol at the rated flow.
  • the filter media 150 also provides reliable operation at a required temperature of 500°C.
  • a protective screen 156 covers the inner side 152 of the filter media 150 and a water resistant media 158 which is configured to resist water entry of up to 12 inches of water column abuts the outer surface 154 of the filter media.
  • a filter cover 160 having vent holes 162 therein provides a protective layer that keeps the filter media 150 from being damaged fits into the opening 45 in the lid 22.
  • the filter cover 160 is preferably made of stainless steel and the ports 162 provide openings for helium leak testing.
  • a storage container for hazardous material such as transuranic waste
  • the can body has a locking collar welded thereto and a locking ring fastened to the lid removably mounted within the locking collar. Locking tabs on the locking ring are received beneath locking shoulders on locking collar upon rotating the locking to hold the lid closed.
  • a U-shaped handle is pivoted on the locking ring for rotating the locking ring to lock the lid to the locking collar and thus to the can body, the U-shaped handle being further used to lift the storage container.
  • a spring biased locking pin with a thumb operated tab is coaxial with one pintle of the U-shaped handle, the tab being squeezed toward the handle by the operators thumb to unlock the pin against the bias of a coil spring so as to allow the locking ring to rotate to an unlocked position when it is desired to remove the lid from the can body.
  • the invention relates to the following items:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Closures For Containers (AREA)
EP14184911.7A 2008-10-03 2009-10-02 Récipient de stockage Withdrawn EP2848549A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/245,106 US20100084403A1 (en) 2008-10-03 2008-10-03 Storage container
EP09172100.1A EP2172944B1 (fr) 2008-10-03 2009-10-02 Récipient de stockage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP09172100.1A Division EP2172944B1 (fr) 2008-10-03 2009-10-02 Récipient de stockage

Publications (1)

Publication Number Publication Date
EP2848549A1 true EP2848549A1 (fr) 2015-03-18

Family

ID=41664652

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14184911.7A Withdrawn EP2848549A1 (fr) 2008-10-03 2009-10-02 Récipient de stockage
EP09172100.1A Active EP2172944B1 (fr) 2008-10-03 2009-10-02 Récipient de stockage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09172100.1A Active EP2172944B1 (fr) 2008-10-03 2009-10-02 Récipient de stockage

Country Status (2)

Country Link
US (1) US20100084403A1 (fr)
EP (2) EP2848549A1 (fr)

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KR20220011686A (ko) * 2019-05-23 2022-01-28 웨스팅하우스 일렉트릭 컴퍼니 엘엘씨 차폐된 컨테이너에서 생성되는 화학양론적 수소 플러스 산소 가스의 수동 배기 장치
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3582231A1 (fr) * 2018-06-15 2019-12-18 GNS Gesellschaft für Nuklear-Service mbH Récipient destiné à la réception des déchets radioactif et récipient agrégat
CN110606269A (zh) * 2018-06-15 2019-12-24 Gns核能服务有限公司 用于容纳放射性废料的容器和容器组件

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EP2172944B1 (fr) 2014-09-17
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