EP3264418B1 - Storage system for other radioactive materials - Google Patents

Description

The invention relates to a storage system for other radioactive substances with at least one lockable storage room. Transport containers electronically monitored against intrusion and / or manipulation are, for example, out US2010 / 265069 and from US2006 / 145870 known.

The safeguarding of other radioactive substances within the meaning of Section 2 (3) of the Atomic Energy Act (AtG) of the Federal Republic of Germany as amended on July 15, 1985 (BGBI. IS, 1565) and as amended on November 26, 2015 must be performed by everyone Time can be guaranteed. It is known that other radioactive substances are stored on the site of a nuclear power plant in simple storage facilities, for example standard containers. The protection of other radioactive substances from unauthorized access is ensured by the fact that the storage facility is located within an external security area (ASB) of the power plant. The ASB thus fulfills part of the safety-related requirements and regulations.

If the ASB is now dissolved for certain reasons, for example when a nuclear power plant is being dismantled, the other radioactive substances may no longer be stored alone in the simple storage facilities, such as the standard containers mentioned above, on the site of the nuclear power plant. The corresponding requirements and regulations for security will then no longer be met. For example, according to Section 7 Paragraph 2 (5) AtG, a Ge Approval for storage is only granted if, among other things, "the required protection against malfunction or other third party effects is guaranteed". In addition, in the list of items of the Manual for Reactor Safety and Radiation Protection (RS Manual) in Section 3-75 it is stated that for the protection of other radioactive substances and small amounts of nuclear fuel within the meaning of Section 2 (3) AtG, the additional cost list against theft for Installations and facilities in accordance with paragraphs 5, 6, 7, 9 and 9a (3) AtG as well as for facilities that require an approval in accordance with paragraph 7 of the German Radiation Protection Ordinance (StrlSchV) in the current version. In addition, the memo list is to be used for facilities that require approval in accordance with Section 7 of the StrlSchV and are directly related to approvals in accordance with Section 6, 7, 9 or 9a (3) AtG. Chapter 2.6 "Storage" explicitly refers to the requirements of DIN 25422 "Storage of radioactive materials, requirements for storage facilities and their installation rooms for radiation, fire and theft protection and defines the necessary resistance classes there. Accordingly, the stored core material has to be moved to another location relocated in accordance with the safety regulations of the ASB, for example on the site of another nuclear power plant or in a building that meets the required safety standards. The transport routes and times required for such a solution for the storage or retrieval of the other radioactive materials are included The other radioactive substances represent an additional safety risk during transport.

Based on this prior art, it is an object of the invention to provide a storage system for other radioactive materials of the type mentioned at the outset, which, with comparatively little effort and in compliance with the safety regulations, has a storage space for such other radioactive materials within the meaning of Section 2 (3) of the Atomic Energy Act the Federal Republic of Germany, i.e. a storage room that is monitored according to regulations and has the required resistance to burglary.

The object is achieved by a storage system for other radioactive substances according to the subject matter of claim 1.

The idea according to the invention advantageously enables, for example after the ASB ceases to exist, measures which can be implemented comparatively easily on a closable storage room to enable the storage room itself to essentially meet the necessary safety regulations for the storage of other radioactive substances. For this purpose, the walls, the ceiling and, if applicable, the floor of a lockable storage room are designed with a predetermined resistance. For example, this can be determined on a case-by-case basis according to the requirements of a resistance class that is intended for the specific storage case. On the other hand, measures are taken to make it possible to recognize attempts at intrusion by people. This is done by using detector elements. A detected fault, intrusion or attempted sabotage recognized by the monitoring system, converted into a corresponding alarm message and sent to a responsible body. For example, this could be security personnel on the facility where the storage system for other radioactive materials is located. But this can also be an object security service or the police. Overall, the requirements according to the principles of prudent management of other radioactive materials are then met (for example: Appendix 2 of the Convention on the Physical Protection of Nuclear Material of October 26, 1979).

An embodiment of the storage system for other radioactive substances provides that the detector elements are designed as a mat or fence field, which have detectors by means of which damage to the mat or the fence field in question can be identified.

Such a configuration of the detector elements is also referred to as a safety fence or safety mat, the respective mat part being able to be designed, for example, from tubes intertwined with one another, without welding points and screw connections. Damage or sabotage is detected, for example, by closed-circuit current monitoring or hidden sabotage contacts. The detector elements cannot be recognized from a position outside a storage room and, due to their mechanical stability, also increase the resistance in the area in question.

According to the invention, cover elements are arranged in front of the detector elements on the side facing the interior of the at least one storage room.

This ensures that the detector elements cannot be seen from inside the room. In addition, it is prevented that the detection modules are protected from damage by loading and unloading a lockable storage space, for example with containers or mesh boxes.

A further embodiment consists in the further detector elements of the at least one lockable storage room for monitoring for opening (e.g. Magnetic or spring-loaded contact), lock (e.g. magnetic or striking plate contact), access (e.g. area monitoring by wires, light barrier, structure-borne noise, microwave motion or ultrasonic motion detector) and sabotage (e.g. closed-circuit principle or sabotage contacts) are.

The other detector elements are primarily intended to monitor at least the opening of the access element, for example a door, a door leaf, a gate or the like. This is done in a particularly simple manner with stop switches or pushbuttons which send a signal or open or close a signal line as soon as a locking mechanism is actuated or the access element or parts thereof are moved, that is to say with components for opening, closing and passage monitoring. There are a multitude of options for using such switching elements at a location that is favorable for the detection task, for example bearing guards for a closing element or a lock. In addition, there are also motion detectors or infrared sensors, which are arranged inside a lockable storage room and whose detection area is aimed at the point to be monitored, for example the door.

A further embodiment of the subject matter of the invention provides that the detector elements and / or the further detector elements are connected to the monitoring system by signal lines, and that the signal lines are monitored for signal interruption or / and the detector elements or the further detector elements are functionally monitored.

In principle, it is possible that the detector or the further detector elements are connected to the monitoring system with all conceivable technical possibilities of signal transmission. However, signal lines are very reliable and, compared to radio transmission technologies, not very susceptible to interference and comparatively difficult to manipulate.

Further advantageous design options can be found in the further dependent claims.

The invention, further embodiments and further advantages are to be described in more detail on the basis of the exemplary embodiments illustrated in the drawings.

Fig. 1

ein Beispiel eines Sicherheitscontainers in perspektivischer Darstellung, sowie

Fig. 2

ein Beispiel eines Lagerungssystems.

Show it

Fig. 1

an example of a security container in perspective, as well

Fig. 2

an example of a storage system.

Figure 1 shows an example of a 20-foot security container 10 in a perspective view. Various side surfaces or parts of these side surfaces are cut free to allow a view into the interior of the cuboid-shaped security container 10.

A first end face 12 of the security container 10 has a two-leaf access door 14, of which only a first door leaf 16 is shown in the closed state. A door linkage 18 is shown on the first door leaf 16 and by corresponding movement of a locking lever, not shown, to lock the first door leaf 16 in a first state and thus to make the safety container 10 inaccessible. By moving the locking lever, the door linkage 18 can be brought into the open position accordingly. The two positions, open or closed, are monitored by a corresponding position detector for the locking lever, which, however, is not shown in the figure. Another detector is shown as a position detector 19 and positioned on the first end face 12 in such a way that it is actuated and accordingly delivers a signal when the corresponding end of the door linkage 18 is arranged in the recessed state for locking the first door leaf 16 in the closed state is. In the selected view, an inside of a second end face 20 is shown as the wall surface of the security container 10.

A first side wall 23 facing the viewer is cut completely free. A container roof 22 is largely cut free and only a smaller roof area is recognizable as a roof or ceiling surface. The selected representation makes it possible to approach the inside of a first side wall 24 of the standard container 10 look. On the half of the first side wall 24 facing the second end face 20, the layered wall structure of the side walls is shown as an example. On the inside of the first side wall 24, a detection module 26 is shown that is designed as a mat. The structural elements of the mat are designed as tubes or tubes and the individual tubes are designed in a wave shape. These are connected or intertwined in such a way that the mat shows up with square individual surfaces. In the selected example, sensor lines are installed in the tubes, which detect an inadmissible deformation of the individual tubes of the mat and thus an attempt to penetrate through the corresponding wall of the safety container 10 can be interpreted and ascertained. A detection module 26 can be used not only for the walls of the security container 10, but also for the access elements, the ceiling or the floor.

A cover plate 28 is shown as a cover for the detection module 26, so that the detection module 26 is arranged between the second side wall 24 and the cover plate 28. On the one hand, it is advantageously prevented that the detection module 26 is easily recognizable; on the other hand, it is ensured that when the safety container 10 is loaded and unloaded, undesired damage by the moving goods is prevented. In a simple embodiment, wood is selected as the material for the cover plate. However, a large number of materials are conceivable here which, for example, increase the resistance class of the safety container 10 or also guarantee a certain degree of radiation protection, so that it is not readily apparent from the outside that radioactive material is stored in such a container. The ballistic armor and bullet-resistant armored panels CPP from Technolog are just one example. As a further possibility of realizing area monitoring, for example of a wall, it is also possible to lay one or more wires over the areas. This is done, for example, with a pattern of several wires in parallel or crosswise or meandering or in other conceivable patterns. In addition, an attempt to penetrate from outside is detected and reported by the detection module 26, for example through the second side wall 24. The increased resistance-providing cover plate is only reached by the intruder after the intrusion attempt has been detected. Further penetration is difficult and advantageously slowed down. However, countermeasures can already be initiated by the detection of the intrusion.

The structure of the standard container 10 has a supporting frame which has four vertically standing corner supports 30, the upper ends of which are connected to the corners of a rectangular ceiling frame 32 and the lower ends of which are connected to the corners of a rectangular floor frame 34. The ceiling frame 32 supports the container roof 22, which in addition to a roof surface on the side facing the container interior can also have a detection module 26 and one or more cover plates 28 in the layered structure described above. However, this is not shown in this figure.

The floor frame 34 is connected to a floor 36, which is formed from a plurality of floor plates 38. The floor 36 must essentially take up the load of the material that is stored in the safety container 10. For this purpose, the floor 36 has floor cross members 40 which are connected to the floor frame 34 and are covered with the floor plates 38 for the interior of the container.

In this way, a standard container is converted into a stable security container 10, which at the same time has important security features, so that it is difficult to penetrate this storage space.

Fig. 2 shows an example of a storage system with a storage space arrangement 50, which has a first storage space 52, a second storage space 54 and a third storage space 56. Such storage rooms 52, 54, 56 can be safety containers 10, for example. It is also easily conceivable that storage boxes, concrete boxes or other standardized storage options are used here. In the example shown, the storage rooms 52, 54, 56 are already equipped with special fence elements as detector elements for monitoring all walls, ceilings and floors, as well as with access sensors for monitoring a gate position of the access gates 58 and further sensors which open the closed position of the locks 60 to the conditions or monitor closed. The access sensors, sensors and detector elements are wired within the respective storage room 52, 54, 56, preferably in such a way that the wiring cannot be seen inside. In addition, the cabling is routed to a specific location on the front side of the storage spaces 52, 54, 56 facing away from this view and routed together in a plug element. For example, a so-called Harting connector from Harting can be used as the connector element.

A monitoring container 62 is also shown, which is connected in a pluggable manner with cables 64 to the plug-in elements described above. This ensures in a particularly favorable manner that a monitoring system in the monitoring container 62 cooperates with the access sensors, sensors and detector elements and particularly reliably detects certain sources of error in the connection to the sensors and detector elements, for example when a plug is pulled, a cable is cut or otherwise how is interrupted or a censor or a management element fails or properly generates a signal in a monitoring case. All of these states are particularly easy to detect with the monitoring system 62, which is designed, for example, as an intruder alarm system (EMA) or as a hazard alarm system (GMA).

In the example shown according to the Figure 2 the monitoring system is arranged in the monitoring container 62. This prevents the surveillance system itself from being sabotaged. Ideally, the monitoring system also has a redundant, independent energy supply, so that the monitoring system remains in operation even if it should be disconnected from the external power supply. In this case, it is always ensured that, in the event of an alarm, a corresponding alarm signal in the selected example is transmitted to security personnel in an alarm control room 66 by means of a dedicated line 68. The alarm control room 66 is constantly occupied and will respond immediately to an alarm signal accordingly. It is also conceivable that the alarm messages are transmitted directly to the police or to an external security service or to another security system, or that several of these options are used in parallel. Alternatively, the alarm signal can also be transmitted via radio, telephone or electronic data transmission.

It is also within the inventive concept that the monitoring system is not arranged in any of the storage rooms 10, 52, 54, 56, 62, but in another room, for example an existing control room in a building existing on the site. This is because there is the possibility that a hazard alarm system or intrusion alarm system already exists, so that storage rooms 10, 52, 54, 56, 62 can simply be connected to the existing monitoring system.

Reference list

10th

Security container

12th

first face

14

Access door

16

first door wing

18th

Door linkage

19th

Position detector

20th

second face

22

Container roof

23

first side wall

24th

second side wall

26

Detection module

28

Cover plate

30th

Corner beam

32

Ceiling frame

34

Floor frame

36

ground

38

floor tiles

40

Floor cross member

50

Storage room arrangement

52

first storage room

54

second storage room

56

third storage room

58

Access gates

60

lock

62

Surveillance container

64

electric wire

66

Alarm center

68

Dedicated line

Claims (8)

1. Storage system for miscellaneous radioactive materials, having at least one lockable storage space (10, 52, 54, 56), wherein detector elements (26) are arranged in the at least one lockable storage space (10, 52, 54, 56) and are used to monitor at least the walls (12, 20, 23, 24) of the at least one lockable storage space for intrusion attempts, wherein further detector elements are arranged in the at least one lockable storage space (10, 52, 54, 56) and make it possible to detect an access element (14, 58) to a lockable storage space (10, 52, 54, 56) and at least the opening or closing thereof, wherein the storage system also comprises a monitoring system (62) which is connected to the detector elements (26) and to the further detector elements (19), and wherein alarm messages can be sent using the monitoring system if necessary,
   characterized in that
   the at least one lockable storage space (10, 52, 54, 56) for miscellaneous radioactive materials is arranged on the site of a nuclear power plant in the sense of paragraph 2, subparagraph 3 of the Atomic Energy Act of the Federal Republic of Germany, in the version published on 15 July 1985 (BGB1. I, page 1565) and in the amended version dated 26 November 2015,
   in that walls (12, 20, 23, 24), the ceiling (22) and/or the floor (36) of the at least one lockable storage space has/have a predetermined resistance to the intrusion of third parties,
   in that the detector elements (26) in the form of a mat (26), a fence panel, wires, wires laid in a meandering manner or other area monitoring elements having detectors which can be used to detect damage to the relevant detector element (26),
   and in that cover elements (28) are arranged in front of the detector elements (26) on the side facing the interior of the at least one storage space (12, 20, 23, 24).
2. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the cover elements are metal plates, composite material plates, armouring elements, bullet-resistant panels or wall elements adapted to a resistance class.
3. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the further detector elements (19) of the at least one lockable storage space are designed to monitor for opening, closure, climbing-through and sabotage.
4. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the detector elements (26) and/or the further detector elements are connected to the monitoring system (62) by means of signal lines (64), and in that the signal lines (64) are monitored for signal interruption or/and the detector elements (26) or the further detector elements are monitored for function.
5. Storage system for miscellaneous radioactive materials according to Claim 4, characterized in that the signal lines (64) are subdivided into sections, and in that a first section is joined to a plug connection between the detector elements (26) and the monitoring system (62) of a lockable storage space (52, 54, 56) to be monitored.
6. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the monitoring system is arranged in one of the lockable storage spaces.
7. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the monitoring system is a hazard detection system or an intrusion detection system.
8. Storage system for miscellaneous radioactive materials according to one of the preceding claims, characterized in that the lockable storage space is a standard container.

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