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EP0173606A1 - Thermosiegelüberwachungsvorrichtung für einen thermogenischen Stoff enthaltenden Behälter - Google Patents

Thermosiegelüberwachungsvorrichtung für einen thermogenischen Stoff enthaltenden Behälter Download PDF

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Publication number
EP0173606A1
EP0173606A1 EP85401497A EP85401497A EP0173606A1 EP 0173606 A1 EP0173606 A1 EP 0173606A1 EP 85401497 A EP85401497 A EP 85401497A EP 85401497 A EP85401497 A EP 85401497A EP 0173606 A1 EP0173606 A1 EP 0173606A1
Authority
EP
European Patent Office
Prior art keywords
seal
container
monitoring device
surface element
series
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.)
Granted
Application number
EP85401497A
Other languages
English (en)
French (fr)
Other versions
EP0173606B1 (de
Inventor
Paul Bourrelly
Jean Monier
Henri Patin
Charles Sanson
Robert Schoepp
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0173606A1 publication Critical patent/EP0173606A1/de
Application granted granted Critical
Publication of EP0173606B1 publication Critical patent/EP0173606B1/de
Expired 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/02—Arrangements or devices for indicating incorrect storage or transport
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
    • G09F3/0341—Forms or constructions of security seals characterised by the type of seal used having label sealing means
    • 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

Definitions

  • the subject of the present invention is devices for monitoring by thermal seal of a container containing in particular calogenic material making it possible to detect any time an attempted break-in of the container and / or the material contained therein, or a theft, even if the thief succeeds in putting the surveillance device back in place.
  • the container containing the heat-generating material comprises parts which, as a result of heat exchanges, have temperatures different from ambient temperature.
  • the object of the present invention is precisely to inviolable monitoring devices for a container, containing in particular calogenic material, making it possible to remedy these drawbacks and making it possible to detect any attempted break-in and / or theft, and this , regardless of where it was made. It is based on the fact that any modification on the container or its contents disturbs the thermal state of the surface of said container on which the sealing device is attached.
  • thermal sensors associated with a data acquisition system is known and in particular described in the article by H. DUANE ARLOWE, NucLear Materials Management 1982, pages 82 to 88, entitled "A Low cost SNM shelf monitor system” , for Detecting the presence of a container on a base and verification of its heat content. But the latter device allows more qualitative than quantitative measurements on the one hand, and on the other hand does not constitute a sealing device.
  • the present invention specifically relates to a device for monitoring a container containing in particular heat-generating material, intended to control the presence and the integrity of the container, characterized in that it comprises at least one seal, affixed to a container surface element, comprising at least one resistive component enclosed in a structure serving as physical protection and thermal insulation, this seal being capable of providing an electrical signal representative of the heat flux exchanged between the surface element and said seal and / or the heat flux exchanged between the environment of the seal and itself, and monitoring means sensitive to said signal and located at a distance from the container.
  • a seal providing an electrical signal representative of the heat flux exchanged with the surface element on LequeL it is arranged and / or the heat flux exchanged with its environment, makes it possible to detect any variation of this heat flux from a modification of the electrical signal emitted by The seal. Variations in heat flow can be due to a change in the environment of the sealed container (movement of the latter or neighboring containers), a change in the geometry of the seal (change, movement of it), a change particularly heat-generating content, to the presence or intervention of various means (person, robot) on any part of the container.
  • the structure of the seal or in other words its envelope is made of a single material serving both physical protection and thermal insulation.
  • said structure is made of two different materials, one serving as physical protection and the other as thermal insulation.
  • the seal comprises two independent series of resistive components electrically connected to each other, one of the series serving to take into account the variations in the heat flux exchanged between the seal and the surface. the container on which it is affixed, the other series being used to take into account the variations in the heat flow exchanged between the seal and its environment.
  • one of the series of resistive components of the seal is placed either near the face of the seal which is applied to the surface element of the container, or directly in contact with said surface element on which the seal is affixed.
  • This arrangement makes it possible to best capture the variation of the heat flux at the level of the surface element on which the seal is affixed.
  • the variation can be caused by a modification of the environment, the geometry of the seal or the possibly calogenic content.
  • the device of the invention comprises several seals providing different electrical signals, these signals being a function of the heat flux exchanged between the surface element and the corresponding affixed seal as well as the electrical characteristics of the resistive components constituting each seal.
  • the monitoring device in addition to the advantages given above, makes it possible, in the case of a container containing heat-generating material, to also monitor the content of the container.
  • FIG 1 there is shown a monitoring device according to the invention.
  • This device comprises one or more seals 2 which are affixed to a surface element 4 of a container containing in particular calogenic material, consisting for example of irradiated or non-irradiated materials or radioactive waste.
  • Each seal is a thermal flux meter providing an electrical signal representative of the heat flux exchanged between itself and the surface element 4 on which it is affixed. It comprises one or more resistive elements or components, connected together in series and / or in parallel, enclosed in a structure 8 or envelope serving as physical protection and thermal insulation, these components being supplied by a direct or alternating current.
  • the resistive components 6 can be resistors with a positive or negative temperature coefficient. They are advantageously placed as close as possible to the face 10 of the seal 2 which is applied to the surface element 4 of the container to be monitored (FIG. 3). In particular, these components can be arranged so that they come into direct contact with the surface to be monitored, as shown in FIG. 1.
  • the structure 8 serving as physical protection and thermal insulation may consist of a single material 12 fulfilling both the two functions of physical protection and thermal insulation.
  • This material can for example consist of an insulator such as an epoxy resin.
  • the fixing of the seal 2 on the surface element 4 of the container can be ensured by gluing.
  • the structure 8 of the seal 2 can also be made, as shown in FIGS. 2 and 3, of two different materials, one having a role of physical protection and the other of thermal insulation.
  • the material playing the role of physical protection bears the reference 14a and the material playing the role of thermal insulator the reference 16a.
  • the material 14a can for example be formed of a metal cover, in particular of stainless steel, and The material 16a of polyurethane foam.
  • the material 14a playing the role of physical protection is arranged so as to wrap the resistive components 6,
  • An air vacuum 17, between the material 14a and the resistive components 6, can be provided, in particular when this material 14a is metallic.
  • the fixing of the seal 2 on the surface element 4 of the container can be ensured by gluing.
  • resistive components 6 can be arranged directly in contact with the surface element 4 of the container to be monitored.
  • the material playing the role of physical protection bears the reference 14b and the material playing the role of thermal insulator the reference 16b.
  • the material 14b can for example consist of a metal cover, in particular stainless steel, and
  • the material 16b of polyurethane foam or a gas such as air.
  • the resistive components 6 are completely embedded in the material 16b, thermally insulating, the latter being covered with the protective material 14b; they have no contact with the surface element 4 of the container to be monitored, but are arranged near said element.
  • the fixing of the seal 2 on the surface element 4 of the container can be ensured, by gluing, welding, brazing, etc.
  • the resistive components 6 of a seal are supplied with a current sufficient to cause a detectable self-heating of these components.
  • the seal is said to be active.
  • This electrical signal carried by a cable 18, as shown in FIG. 1, can be detected and then analyzed using an appropriate electronic circuit 20, which will be described later, located at a distance from the container to be monitored.
  • FIG 4 there is shown another embodiment of a thermal seal, according to the invention, said quantitative.
  • the seal 2 comprises two independent series 6a and 6b of resistive components, enclosed in the structure 8. In each series, the electrical components are electrically connected together.
  • One of the series 6a is arranged, as before, either near the face 10 of the seal 2 which is applied to the surface element 4 of the container (FIG. 3) or in direct contact with the surface to be monitored. It allows, as previously, to provide an electrical signal representative of the heat flux exchanged between the seal 2 and the surface element 4 of the container on which the seal is affixed.
  • the other series 6b is arranged near the face 21 of the seal 2 opposite to the face 10 of the latter. It provides an electrical signal representative of the heat flux exchanged between the environment of the seal and itself.
  • the structure 8 of the seal 2 be made of two different materials, the material 14b playing the role of physical protection being situated towards the outside of the seal and The material 16b playing the role of thermal insulation being enclosed in the material 14b.
  • FIG. 4 In the case of a container containing heat-generating material, it is possible to use a system equivalent to the seal of FIG. 4, consisting of two seals as shown in FIGS. 1 to 3; One of the two seals, called the first seal, provides an electrical signal representative of the heat flow exchanged between itself and the surface of the container on which the iL is affixed, and the second seal provides an electrical signal representative of the heat flow exchanged between it - itself and its environment.
  • the first seal is placed on a sealed surface of the container and the second seal in particular on a part at ambient temperature of said container.
  • the same seal 2 can be used "quantitatively” for the monitoring of a container containing calogenic material; then “actively” When this material stops giving off Heat.
  • the same seal can be used in two different ways depending on whether the content of the container is heat-generating or not.
  • the seals 2 constitute thermal flow meters able to assist in the quantitative monitoring and management, by means of an appropriate circuit, of the heat-generating materials enclosed in the container to be monitored.
  • the measurement of the heat flux makes it possible to know the amount of material present. Otherwise, the measurement of the heat flux and the amount of material present are only correlated.
  • an appropriate circuit 20 allowing the acquisition and management of the electrical signals transmitted by the seals 2 allows. to constitute an inviolable security device.
  • a circuit 20 allowing interrogation of each seal 2 continuously, for example every milliseconds, does not make it possible to have a time long enough to carry out a malicious intervention.
  • the acquisition and analysis system 20 can be such as to keep track of any particularly malicious intervention on the containers to be monitored.
  • seal arrangements there are shown different types of seal arrangements according to the invention. These arrangements are formed by several seals 2 which can be mechanically connected together, for example using metal wires 22 (steel). These seals 2 can for example be affixed, as shown in FIGS. 6 to 8, on the contact area 24 between the cover 26 of the container and the body 28 of the latter, or, as shown in FIG. 7, affixed near this contact area 24, for example on the cover 26 or on the body 28 itself of the container.
  • the seals will be avan taggedly affixed outside the contact zone 24 of the lid and of the container body (FIG. 7) in order to allow, for service reasons, to open and then close the container, the seals detecting this intervention and the possible modification of the content from the container without being destroyed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Burglar Alarm Systems (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Closures For Containers (AREA)
EP85401497A 1984-07-24 1985-07-19 Thermosiegelüberwachungsvorrichtung für einen thermogenischen Stoff enthaltenden Behälter Expired EP0173606B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8411721 1984-07-24
FR8411721A FR2568227B1 (fr) 1984-07-24 1984-07-24 Dispositifs de scellement et de surveillance d'un conteneur renfermant notamment de la matiere calogene

Publications (2)

Publication Number Publication Date
EP0173606A1 true EP0173606A1 (de) 1986-03-05
EP0173606B1 EP0173606B1 (de) 1988-11-23

Family

ID=9306430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401497A Expired EP0173606B1 (de) 1984-07-24 1985-07-19 Thermosiegelüberwachungsvorrichtung für einen thermogenischen Stoff enthaltenden Behälter

Country Status (6)

Country Link
US (1) US4658251A (de)
EP (1) EP0173606B1 (de)
JP (1) JPS61164961A (de)
CA (1) CA1251536A (de)
DE (1) DE3566384D1 (de)
FR (1) FR2568227B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1365974A2 (de) * 2000-07-03 2003-12-03 Kodiak Technologies, Inc. Kühlbehälter mit datenüberwachungsvorrichtung
US6979119B2 (en) * 2003-04-30 2005-12-27 Raytheon Company Sensor system and method for sensing in an elevated-temperature environment, with protection against external heating
DK2700923T3 (en) * 2012-07-04 2017-10-02 Schlumberger Technology Bv Apparatus for determining fluid properties

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048489A1 (de) * 1969-10-03 1971-04-15 Vyzk Ustav Organickysch Syntez Temperaturflachenfuhler
FR2196469A1 (de) * 1972-08-18 1974-03-15 Degussa
EP0018198A2 (de) * 1979-04-24 1980-10-29 European Atomic Energy Community (Euratom) System zum Kennzeichnen von Objekten, zum Beispiel nuklearen Brennstoffelementen
GB2062860A (en) * 1979-11-06 1981-05-28 Iss Clorius Ltd Temperature sensing assembly
EP0082763A1 (de) * 1981-12-22 1983-06-29 Communaute Europeenne De L'energie Atomique (Euratom) Überwachungssystem für eine Vielzahl von Behältern mit ultraschallgesicherten Verschlüssen
EP0126658A1 (de) * 1983-04-19 1984-11-28 Commissariat A L'energie Atomique Wärmeflussmessgerät zur Überwachung von wärmeproduzierenden, in einem Behälter aufgenommenen Stoffen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375702A (en) * 1965-06-07 1968-04-02 Geothermal Surveys Inc Leak detection method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048489A1 (de) * 1969-10-03 1971-04-15 Vyzk Ustav Organickysch Syntez Temperaturflachenfuhler
FR2196469A1 (de) * 1972-08-18 1974-03-15 Degussa
EP0018198A2 (de) * 1979-04-24 1980-10-29 European Atomic Energy Community (Euratom) System zum Kennzeichnen von Objekten, zum Beispiel nuklearen Brennstoffelementen
GB2062860A (en) * 1979-11-06 1981-05-28 Iss Clorius Ltd Temperature sensing assembly
EP0082763A1 (de) * 1981-12-22 1983-06-29 Communaute Europeenne De L'energie Atomique (Euratom) Überwachungssystem für eine Vielzahl von Behältern mit ultraschallgesicherten Verschlüssen
EP0126658A1 (de) * 1983-04-19 1984-11-28 Commissariat A L'energie Atomique Wärmeflussmessgerät zur Überwachung von wärmeproduzierenden, in einem Behälter aufgenommenen Stoffen

Also Published As

Publication number Publication date
FR2568227A1 (fr) 1986-01-31
US4658251A (en) 1987-04-14
EP0173606B1 (de) 1988-11-23
JPS61164961A (ja) 1986-07-25
CA1251536A (en) 1989-03-21
FR2568227B1 (fr) 1986-11-14
DE3566384D1 (en) 1988-12-29

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