FR2628880A1 - METHOD AND DEVICE FOR THE EVACUATION OF RADIOACTIVE PRODUCTS, THEIR STORAGE, HANDLING AND TRANSPORT - Google Patents

Abstract

a) Method and device for the removal of radioactive products, their storage, handling and transport. b) Characterized in that the placing of the active product 10, in a state suitable for transport and final storage, is carried out using handling equipment 3 of the radioactive product 10 in a storage container 11 by visually checking the 'state of filling, this container being placed in a transport container 1 providing protection against radiation and the vagaries of transport. c) The invention relates to a method and a device for the removal of radioactive products, their storage, handling and transport.

Description

E) FRENCH REPUBLIC Publication No. 2,628,880 (to be used only

  for INSTITUTE NATIONAL Reproduction Orders)

OF PROPERTY = INDUSTRIAL TEA

  OF INDUSTRIAL PROPERTY N of national registration 88 12813 PARIS

(Int CI4: G 21 F 5/00.

@ APPLICATION FOR PATENT OF INVENTION A1

  Date of deposit: 30 September 1988. Q Applicant (s): BRENNSTOFFINSTITUT FREIBERG. -

DD.

  (Priority: DD '15 March 1988. n WP G 21 E / 313 687 7.

  (Inventor (s) Herbert Quaas: Rainer Silbermann.

  (Date of the public availability of the

  application: BOPI "Patents" No. 38 of 22 September 1989.

  References to other national documents appearing

paid: () Holder (s):

  (Agent (s): Cabinet Herrburger.

  Method and apparatus for the disposal of radioactive products, their storage, handling and transport

  a) Method and device for the evacuation of products

  radioactive material, their storage, handling and transport.

  b) Characterized in that the placing of the active product 10 in a state suitable for transport and final storage is operated using equipment for handling the radioactive product.

  in a storage container 11 by visually controlling

  the filling state, this container being arranged in a transport container 1 providing protection against the.

  radiation and the vagaries of transport ..

  (C) The invention relates to a method and a device for the disposal of radioactive products, their storage and handling.

I and transport.

  cc o N cc N IL O Sale of fascicles to the NATIONAL PRINTING. 27. rue de la Convention - 75732 PARIS CEDEX 15 "Process and device for the evacuation of products

  radioactive material, their storage, handling and transport. "

  The invention relates to a method and an arrangement

  for evacuation, routinely, and by providing protection against radiation and

  protection of the environment, radioactive substances

  or radioactive waste, including high levels of activity and contamination, and

  present in nuclear power plants, the

  under the nuclear technology or in

nuclide users.

  For the handling and conditioning of radioactive waste, the protection against

  radiation must be ensured by a system of

  waterproof cuffs, radiation protection

  remote control devices and devices, in

  a pressure drop from the zone of

  - command to the process area.

  These requirements are satisfied only by

  stationary hot cells with

  high technical and financial costs of building

  and equipment. The technological process

  implementation of the process is preferably decomposed

  in different stages, and it is carried out through

  medium of equipment adapted to the cells or. the

  remote controls. There is usually good

  visual and remote control interventions, as well as advantageous conditions for a flexible realization of the process. In the case of

  changes in technology, the replacement of

  sebles or parts of equipment is possible. The

  process steps giving rise to waste

  harmful stains or secondary waste, are

  calised by appropriate measures to minimize contamination of premises and false equipment

  for example the measurement of activity due to

  outside the country and which increases the expense for the

  safe decontamination and maintenance in the state. The radioactive components or the waste contained in storage containers are, via lock processes, introduced into transport containers or delivered in

  containers, and are transported to the defined storage

  nal. When the transport container is not planned

  with an orifice for loading and unloading-

  The storage container should be returned with an additional transhipment container and then

  transported to the shopping location and unloaded.

  As an alternative to the heat cells

  Handling can be done with

  protected from radiation. Handling equipment is designed specifically for the radioactive component parts (DD-WP 222 997) and

  they require between the steps of the process, a

  equipment or transhipment or

  lock the radioactive product to be treated. Possibilities

  viewpoints and interventions or taken in

  the mechanized or partially automatic

  the process, are only limited or not possible. The feeding and extraction devices are made so that they can be changed locations, be flexible and cut. High tolerances are imposed on the joining pieces. Internal contamination of

  equipment, as well as coupling

  increase the cost of decontamination and

maintenance in state.

  The reduction of the technical construction expenditure for the radiation protection system, and the availability of use of

  equipment, are advantages.

  The object of the invention is to provide

  in accordance with the requirements, for sub-

  radioactive stains or radioactive waste pre-

  including an activity and a power of

  high ventilation, a complete evacuation of the

  production to the final storage location, without the use of hot cells and without trans-shipment of the radioactive product between stages

of the process.

  The problem of the invention consists in developing

  lopper, thanks to a process and thanks to a system of

  equipment, the current and complete evacuation in

  conditions of protection against radiation from

  security for the environment, the evacuation, from

  nuclear plants, technical installations

  nuclear facilities, or nuclear users

  radioactive substances or radioactive waste.

  in particular of an activity and / or a contamina-

  the products to be disposed of in a state suitable for transport and disposal,

  without the use of hot cells and without transpor-

  between the steps of the process, up to the location

  warehouse or to the storage location

definitive age.

  According to the invention, this problem is solved by the fact that, as a radiation protection system, a transport container is used which can be moved with a rotary radiation protection closure for the protection against radiation. collection and storage container arranged

  centrally and vertically in the load channel-

  for the radioactive product. Thus is found

  t guaranteed that loading or unloading

  of the radioactive product and the inclusion of this

  produced in an enclosure providing the protection

  radiation and environmental safety without

  additional closing mechanism for the protection

  against radiation and contamination.

  Loading without loss and without contamination

  storage container with radioac-

  tif, from specific handling equipment

  placed upstream, is retained by overlapping the lower discharge port and sealing application of the upper edge of the storage vessel by a lifting device capable of moving

  vertically. In these circumstances, only the crews

  must be provided with radiation protection closures that transfer or receive the

  radioactive product. The equipment and devices

  after implementation in the technological progress of the process, in combination with the movable transport container, do not require closures

  protection against radiation.

  It is thus possible in a tech-

  nological condition conditioned by the process, to couple

  container and under working conditions

  inactive standard equipment, interchangeable equipment or technological devices. In addition, technological steps of the process (eg

  decontamination, the TUL processes) can be

  eliminated or reduced in importance.

  tance. The process is carried out, preferably by mechanization or by partial automation and requires for the coupling of equipment or

  between them, conditions and factors

  coupling elements easily adapting.

  The specific processing and fragmentation equipment mounted upstream, with the radioactive constitutive part to be fractionated, or with

  the radioactive product, are functionally

  they are autonomous, protected from all sides against radiation and capable of being coupled. In the rotary cylindrical radiation protection closure is integrated the complete treatment device for mechanical or thermal separation or for melting or for laser cutting. AT

  the periphery of the cylindrical protective closure

  against radiation, monitoring devices

  Visual images are arranged in the vicinity of the protection segment to allow control of the internal spaces. When the equipment is coupled, the radioactive components are fragmented or the product in bulk or in pieces is directly introduced into the storage container and the filling state is then controlled with the observation device, the latter is enclosed tightly

  radiation, and then the equipment is de-

coupled.

  For the conditioning of the radioac-

  sealing the storage container for the determination of the temperature of the activity

  nuclides of this container, technological devices

  logical, without contamination protection, are ac-

  In this case, coupling elements and, in this case, assembly components, measurement value indicators, or functional groups conditioned by the process are associated. The sealed storage container,

  free from contamination and corresponding characteristics

  to the physics of the nucleus, is transported to

  protected from radiation in the transport container

  port, it is placed on a protective closure

  against radiation, both in view of a maga-

  likely to end (intermediate storage).

  diary) only for final disposal and is

  se, or tilted, in a manner defined by a

  lifting device coupled to the transport container and

  carrying claws to grab the storage container

Kage.

  Through the use of professional materials

  appropriate absorption and / or absorption, the system of

  evacuation can be designed in a specifically useful manner depending on the activity or nuclides for different sizes of radiation protection groups and storage containers, so that the mass of the transport container and

  that of the radioactive stored product may be in

  cord in a favorable report, from the technical point of view

economic and economical.

  The advantages of the invention are that it can be achieved under inactive conditions

  and thanks to technological equipment and devices

  processes, a technological process of closed evacuation from the treatment of the waste to the final disposal, in a way inexpensive and under favorable conditions for the

  service and maintenance, with moving equipment

  protected against radiation and ensuring

environmental safety.

  The entire equipment complex or

  the equipment of the technological parts of the

  cuation, are likely to be displaced in

  large containers. The expenditure in

  truction and equipment for protection against

  radiation (hot cells) as well as

  Costly lockups are removed. The inclusicn

  providing radiation protection and exempting

  contamination of the open collector

  on one side or the hermetic storage container-

  closed, allows for all stages of the process

  and handling during transport and

  transhipment process (TUL process) a coupling

  simply technologically conditioned by the

  assigned equipment and devices as well as the

  position of installations and equipment of the tech-

  control and fluid supply. The-

  functional led or oriented positioning

  parts to be assembled when closing the container.

  storage, in a mechanized

  partially automated process, is sus-

  it can be implemented reliably and

  expensive under inactive operating conditions

  ves. This is advantageous for fragmentation by mechanical or thermal separation or recasting, for packaging assembly taking place

  adhesion, interpenetration of shapes or materials

  for the determination of the mass, the temperature,

  the activity and nuclides of the storage container, for computationally supported detection, as well as for input and output control and for the verification of the activity inventory. In

  In addition, the calibration of

  which is carried out on the original equipment

  and without any influence by the ex-

  and contamination, are achievable objecti-

cheaply.

  Correspondingly to the technical requirements

  of the process, it is possible, in the same way, to

  at will to the transport container,

  Special features for process observation (cameras

  televisions, periscopes, protection windows

  radiation, light conductors), for a

  sample taken from the container

  drive, for compacting the bulk product, or for testing contamination control

  wiping on the storage container.

  The transport container is designed so that the technological processes of the process for the

  handling and transhipment, as well as

  sports in accordance with the requirements in the field of public traffic, up to the storage location for temporary storage with a view to reducing activity or until final storage, may be carried out

  with the means of transport by road or by rail

  ponibles. The defined deposition of the container of

  storage is done by coupling a device of the-

  or by free tilting, directly to

  firing of the transport container into the magazine cavity

  sinage or in the final storage cavity. In-

  with the same equipment, inactive plugs

  protection and closure, to the dimensions of the

  storage, can be transhipped.

  The current evacuation system oriented

  the technology of the installation and synchronized in the complex, can be subdivided into any technological sections of evacuation systems,

  it can be adapted to different conditions of

  range of devices in the nuclear

  re, or the conditions of the nuclear users

  such that a use of the tran-

  sport and disposal of substances or

  high activity, is guaranteed for a

  te and a unitary and centralized final storage.

  Thanks to the contamination-free process

  for handling as well as for conditioning

  the expense of decontamination and therefore the

  secondary radioactive waste during measurements of

  maintenance, are reduced and can be

  under operating conditions.

  In the case of irregularities during the

  process or in the case of inci-

  teeth, the radioactive product remains in the equipment

  protected from radiation and may, thanks to

  triggered manually from the outside,

  be located in the transport container without

only for the environment.

  Technological equipment and devices

  These are intended for maintenance, so that defective subgroups or faulty functional units can be changed and can be

  evacuated with the same system, respecting the

  these protection against radiation in the absence

of hot cells.

  The invention will be explained below by

  referring to an exemplary embodiment. The drawings below

  joints represent: - figure i a transport container with

  a rotary closure for protection against

  FIG. 2 is a handling device with an integrated handling device specific for the radioactive constitutive part, FIG. 3 a transport container with a rotary insert, FIG. 4 a lifting device for the storage container, FIG. 5 a lifting and gripping device for the storage container; FIG. 6 a technological equipment of the method with an open loading channel on one side only; FIG. 7 a technological equipment of the method with a channel 8, a set of equipment for handling and collecting the radioactive product, FIG. 9 a set of equipment for the packaging of the radioactive product, FIG. 10 a set of equipment.

  for depositing the storage container.

  In FIG. 1, the transport container 1 is shown in a state where it is protected against

* radiation and suitable for transport with covers

  12. In Figure 2, the equipment of

  manipulation 3 is shown with a rotatable closure

  protection against radiation and a

  specific integrated handling system of the radioactive constitutive part, as well as with a visual observation device, this equipment being susceptible

  to be coupled to the transport container 1 or 2.

  In Figure 3, the transport container 2

  is shown with a rotary insert intended to receive

  see the storage container 11 in a state providing radiation protection and suitability for

  transport, with closing lids 13.

  In FIG. 4 is shown the lifting device 4 for lifting or lowering vertically the

  storage container 11 and to determine the mass

  this device being capable of being coupled to

transport container 1 and 2.

  In Figure 5 is shown the lifting and gripping device 5 for lifting or lowering

  vertically the storage container 11, this device

  tif being able to be coupled to the container of

transport 1 and 2.

  FIG. 6 shows a technological equipment of the method 6, open on one side, and which

  is likely to be coupled to the tran-

  1 and 2, under the conditions laid down in the

  yielded. In Figure 7 is shown a technological equipment of the method 7 with a through loading channel.

  In FIG. 8 is shown, in the

  operating package, the equipment package

  to put the radioactive constituent part

  or the radioactive product 10 in a state suitable for transport and final storage. On the device

  4, the transport container 1 with the container

  collection or storage pit 11 opened from a single

  side, is arranged so that the discharge register

  17 of the handling equipment 3 placed

  is covered by the tight proofing of the

  container or storage container 11 by the

lift 4.

  Is the radioactive constitutive part 10

  fed discontinuously into the rotary closure

  radiation protection 14, the provision of

  lifting and gripping device of the handling equipment 3 of the processing device 16, and the fragmented radioactive product 10 is collected in the

  storage container 11. When the equipment of the

  nipulation 3 is protected against radiation,

  internal space and / or the filling state of the storage container 11 can be visually controlled with the observation device 30 disposed on the periphery of

  the radiation protection closure 14.

  In FIG. 9 is shown, in the

  operating unit, the set of equipment for packaging the radioactive product 10 by sealing the storage container 11

free of contamination.

  The arrangement of the transport container 1, with the storage container 11 filled and open on one side, on the lifting device 4, corresponds to the

  representation in Figure 2. Instead of the team-

  manipulation 3, is put in place, being

  protected against radiation, technological equipment

  6, the storage container is lifted vertically in the joint plane of the technological equipment of process 6 and sealed. The storage container 11 thus closed is lowered into the output position

  and the transport container 1 is closed to allow

to be the transport.

  In Figure 10 is shown the set of equipment for depositing the container of

  storage 11 in the storage cavity 9. The

  transport neur 2 is placed on the device of

  closing 8 of the storage cavity 9. The device

  The lifting and gripping device 5 is placed, while being protected against radiation, on the container of

  transport 2 and the storage container is direct-

  lowered in the storage cavity 9 for a storage of a definite duration. Thanks to the device

2628880-

  at the periphery of the farm.

  In accordance with FIG. 8, the internal spaces of the equipment connected upstream and downstream 2, 9 can be inspected.

  According to another characteristic of the in-

  storage container, transportable and suitable for storage and storage, closed from

  sealed and free of contamination, is likely to

  tible to be transhipped, transhipped or

  direct payment by the mass transport container

  reduced with a rotating insert for the protection

against radiation.

  According to another characteristic of the in-

  the transport containers are

type B

  According to another characteristic of the in-

  vention, the device is made according to the activity and nuclides through the use of appropriate materials for protection against

  radiation and / or for neutron absorption.

Claims (6)

  1.- Process for the evacuation of substances   radioactive waste, including   high level of activity and contamination, by placing the radioactive material in a suitable transport and storage state, and by loading, sealing,   nuclides and / or the activity and mass of the   storage method, as well as its transport to a storage or final storage location, characterized in that the placing of the active product (10), shielded on all sides against the emission of radiation, in a state suitable for transport and final storage, is operated using interchangeable handling equipment (3) and capable of being coupled, and is carried out by direct transfer,   loss and contamination, the radioactivity product   tif (10) in a storage container (11) under   visually the filling state, this container being arranged in a transport container (1) or (2) providing protection against radiation and transport hazards and remaining in this container   to the storage or storage location de-   finished, and then placed on the closing device   ture (8) to be introduced directly under visual control into the cavity (9) storage or storage, while for sealing, the determination of nuclides, the activity of the mass,   as well as for the transhipment of the storage container   kage (11), technological equipment (4, 5, 6, 7)   protected against radiation are coupled with the   transport content (1) or (2) preferably without   additional protection against contamination.   2. Device for carrying out the method according to claim 1, characterized in that a transport container (1) or (2) is made with a rotary closure (18) or (23) providing protection against radiation, and with a loading through channel (19, 24) which can be closed in a radiation-tight manner and in which   the storage container (11) for the radioactivity product   tif (10) is arranged to be vertically displaceable, while the unloading port (17) of the handling equipment (3) ensures   protection against radiation and likely to   be coupled upstream, is closed by a   radiation protection device (14) with a handling device (16) specific to the   constituent part and integrated into the channel of   (15) as well as with an observation device   (30) at the periphery of the closure (14) for protecting   against the radiation in the vicinity of the protection segment (28), while equipment (6,   7) falling within the process technique, interchangea-   capable of being coupled, are coupled   in a radiation-tight manner without   contamination to the transport container (1) or (2), and the storage container (11) suitable for transport and final storage could be lowered or be tumbled directly into the cavity (9) for storage or final storage   by a lifting and gripping device (5) ac- couple.   3. Device according to claim 2,   characterized in that the storage container (11),   transportable and suitable for warehousing and storage   finished, sealed and free from contami-   nation, is likely to be transhipped, by trans-   direct edging or unloading by the transport container of reduced mass (2) comprising an insert   (23) for protection against radiation   ments. 4.- Device according to any one of   claims 2 and 3, characterized in that the con-   transport contents (1) and (2) are containers of the type B (U).   5.- Device according to any one of   claims 2 to 4, characterized in that the provision   is based on activity and nu-   thanks to the use of appropriate materials for protection against radiation and / or the absorption of neutrons. Fig 2 Fig 5 Fig, .. 6 Fig NO <'I' 3 5 6 cm4 _J o- Fig 1 Fig 3 i 1 / Fig 4 1 12 41 4, - Fig'8 Fig'9 5 Fig10 - 1.4-28 2N 23 23. 20222 "2. '1 .. 27, -' ' 18 _..... 1 19 _g9 j -, Co DC