EP0859371A1 - Strahlenschutzbeobachtungsfenster - Google Patents

Strahlenschutzbeobachtungsfenster Download PDF

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Publication number
EP0859371A1
EP0859371A1 EP98400305A EP98400305A EP0859371A1 EP 0859371 A1 EP0859371 A1 EP 0859371A1 EP 98400305 A EP98400305 A EP 98400305A EP 98400305 A EP98400305 A EP 98400305A EP 0859371 A1 EP0859371 A1 EP 0859371A1
Authority
EP
European Patent Office
Prior art keywords
frame
optical unit
glass
sheets
porthole
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
EP98400305A
Other languages
English (en)
French (fr)
Other versions
EP0859371B1 (de
Inventor
Joel Rain
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.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Vitrage SA
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 Saint Gobain Vitrage SA filed Critical Saint Gobain Vitrage SA
Publication of EP0859371A1 publication Critical patent/EP0859371A1/de
Application granted granted Critical
Publication of EP0859371B1 publication Critical patent/EP0859371B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G21F7/00—Shielded cells or rooms
    • G21F7/02—Observation devices permitting vision but shielding the observer
    • G21F7/03—Windows, e.g. shielded

Definitions

  • the invention relates to a protective window or window, in particular against radiation from cells or enclosures in installations nuclear.
  • portholes must have good absorption of high energy radiation such as radiation X, ⁇ and / or good absorption of neutron radiation.
  • these portholes are in particular made up of a set of glass sheets of sufficient thickness and enriched either with elements heavy to absorb for example X and ⁇ radiation, either boron or hydrogenated products to absorb radiation in particular neutronics.
  • This set of glass sheets is placed in a frame and the porthole thus formed will be positioned in the opening of a wall, the latter also being charged with radiation absorbing particles.
  • Such embodiments provide for cutting the sheets. glass with very precise dimensions to minimize the clearance provided between said glass sheets and the frame.
  • the object of the invention is therefore to provide a window providing protection against high energy and / or neutron radiation, the realization is simple and requires less time than necessary for the technique presented before.
  • a window consisting of at least minus an optical unit, providing protection against radiation high energy and / or neutron and a frame surrounding the block optical, the space between the optical unit and the frame being filled by a flowable and hardenable material.
  • Such a porthole has many advantages during its construction and especially the pourable material fills during its casting, the space or the clearance provided between the optical unit and the frame without requiring operations consisting in compacting said material.
  • Another advantage linked to such a material is to be able to produce a complete optical unit before inserting it into the window frame and then to pour the flowable and curable material. Unlike the previously mentioned technique, it is not planned to have to finish the realization of the optical unit within the window.
  • the flowable material is loaded with particles heavy and / or anti-neutrons.
  • a material may be a resin, but the resistance to organic matter radiation is not satisfactory for some applications.
  • the flowable material and curable is a concrete, advantageously chosen identical to that constituting the walls of the enclosure within which the porthole is intended to be installed in such a way as to protect against very strong radiation homogeneous compared to the rest of the walls of the enclosure.
  • the concrete chosen is advantageously loaded with iron ores to give it a density around 4.5 and / or contains boron or hydrogenated products neutrophages and / or attenuator of ⁇ radiation.
  • the concrete used comprises a quantity of water stoichiometric. In this way, there does not remain an excess of water which could affect the quality of the optical unit and in particular the bonding of glass sheets.
  • a sheet or a film of waterproof material envelops the optical unit and thus prevents any risk contact between the optical unit and the flowable material. This avoids by example any risk of contact of the optical unit with the water contained in concrete.
  • the optical unit has a truncated-pyramidal shape, that is to say having the shape of a pyramid, the lower and upper faces being parallel.
  • a shape allows in particular to promote the flow of the flowable material and curable around the optical unit.
  • each sheet of glass is provided with inclined edges so that the assembly of these sheets forms a truncated-pyramidal optical unit.
  • each glass sheet is provided with edges inclined with the same slope.
  • the slopes of the inclined edges are slightly different for each glass sheet, said block comprising at least two sheets of glass.
  • the window frame is made of sheet metal and therefore little expensive, especially with regard to the usual techniques which require a cast iron material.
  • the frame present on the whole from its periphery a setback. This step allows on the one hand during installation, place the porthole resting on a recess of complementary shape provided in the wall in which it is installed. On the other hand, this recess of the frame is filled on its internal face by the flowable material. According to another embodiment, blocks of cast iron can also fill this gap inside the frame, in particular to limit the amount of flowable material required.
  • the window frame is only used for molding the flowable material and then is eliminated.
  • the invention also provides a method of manufacturing such portholes.
  • this method consists in placing the optical unit previously realized on its large surface, in the frame, the optical axis of the block being oriented vertically, then pouring the pourable material and curable between the optical unit and the frame.
  • the material comes to fill the space or the clearance provided between the optical unit and the frame. No manual intervention is then necessary to come compact the material at the base, it flows naturally.
  • this step is simplified or at least made faster due to the narrowing of the space to be filled down due to the truncated pyramid shape of the optical unit.
  • the porthole according to the invention and the method of manufacturing such a porthole proposed by the invention therefore allow on the one hand to simplify the manufacturing and reducing its costs and on the other hand lead to a window providing perfect protection against high radiation energy and / or neutronics.
  • the porthole 1 shown comprises an optical unit consisting of five sheets of glass 2, 3, 4, 5, 6. Each of these sheets of glass has a composition which gives it protection for ⁇ -type high energy radiation and / or for radiation neutronics. These glass sheets have thicknesses included between 100 and 300 mm and are assembled to form the optical unit.
  • the porthole further comprises a sheet metal frame 7. This frame 7 has on the whole of its periphery, and therefore on the whole of the periphery of the window 1, a recess 8. This recess 8 makes it possible to come embed and position the window 1 in the opening of a wall provided for this effect and comprising a recess of a shape complementary to that the recess of the window 7 frame 1. The combination of these two on the one hand, it provides good precision for the installation of the porthole 1 and on the other hand total protection for high energy and / or neutron radiation.
  • the first step is to produce the optical unit and more precisely by bonding the glass sheets 2, 3 and 4.
  • These collages are made by any method known to those skilled in the art job.
  • This type of peripheral mounting is carried out by a waterproof seal 9, in the same way as for glazing marketed under the name CLIMALIT.
  • Tubes 10 may also be provided at the periphery of the seals sealing 9. These tubes 10 then ventilate the air knives between the glass sheets 4 and 5 and between the glass sheets 5 and 6, in particular to eliminate any risk of fogging which would harm the light transmission.
  • the optical unit consisting of the five sheets of glass 2, 3, 4, 5, 6 is thus constituted: it has a form of truncated pyramid, each of the glass sheets 2, 3, 4, 5, and 6 having bevelled sides.
  • the sheets of glass and more particularly the faces of the glass sheets which are not not glued over their entire surface may include an anti-reflective treatment.
  • the pipes 10 are provided in such a way so that they are embedded in concrete with holes 15 projecting from the concrete 14.
  • each glass sheet has bevelled edges including the slopes of the bevels are different from one sheet of glass to another.
  • Such a realization allows, in the case in particular of a plastic sheet or a resin enveloping the optical unit, that a ray parallel to the slope of the bevel of the glass sheet 6 is absorbed by the concrete 14 or by one of the other sheets of glass, the junction area between the optical unit and the concrete 14 not being linear, over the entire length of the optical unit.
  • the window 1 thus proposed according to the invention thus offers protection effective for high energy and / or neutron radiation.
  • the realization of this porthole is faster and therefore less expensive than the usual methods.
  • the use of a material pourable and hardenable such as concrete is very fast and full perfectly the space provided between the frame 7 and the optical unit. Otherwise, this technique still has an advantage; dimensional accuracy of the edges of the glazing is not as rigorous as according to the techniques usual since concrete 14 will fill the entire empty space during its pouring, then during the shrinking phenomenon. It is thus possible to keep the edges of the glass sheets 2, 3, 4, 5, 6 rough molding, that is to say without any finishing step, in particular with a view to eliminating any roughness. Indeed, even if these exist, the concrete 14 comes cover the entire edges of the glass sheets. It therefore appears that this feature of the invention further reduces the cost of manufacture of the porthole.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physics & Mathematics (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Laminated Bodies (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Water Treatment By Sorption (AREA)
  • Eyeglasses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Lenses (AREA)
EP98400305A 1997-02-13 1998-02-11 Strahlenschutzbeobachtungsfenster Expired - Lifetime EP0859371B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701665A FR2759485B1 (fr) 1997-02-13 1997-02-13 Hublot de protection contre les rayonnements
FR9701665 1997-02-13

Publications (2)

Publication Number Publication Date
EP0859371A1 true EP0859371A1 (de) 1998-08-19
EP0859371B1 EP0859371B1 (de) 2001-11-28

Family

ID=9503656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400305A Expired - Lifetime EP0859371B1 (de) 1997-02-13 1998-02-11 Strahlenschutzbeobachtungsfenster

Country Status (11)

Country Link
US (1) US5937598A (de)
EP (1) EP0859371B1 (de)
JP (1) JP4307584B2 (de)
AT (1) ATE209822T1 (de)
CA (1) CA2229695C (de)
DE (1) DE69802593T2 (de)
DK (1) DK0859371T3 (de)
ES (1) ES2167844T3 (de)
FR (1) FR2759485B1 (de)
PT (1) PT859371E (de)
TW (1) TW396349B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109930962A (zh) * 2019-04-12 2019-06-25 中国核动力研究设计院 模块化屏蔽窥视窗

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327466B4 (de) * 2003-01-13 2008-08-07 Jan Forster Baukörper für Strahlenschutzbauwerke
US7257927B2 (en) * 2003-08-15 2007-08-21 Premier Technology, Inc. Three-piece frame assembly for window of enclosure
WO2006022624A2 (en) * 2004-07-22 2006-03-02 Precision Dynamics Corporation Rectifying charge storage memory circuit
JP6064386B2 (ja) * 2012-06-27 2017-01-25 日本電気硝子株式会社 放射線遮蔽窓
CN104929493B (zh) * 2015-06-15 2017-03-08 天津天绿健科技有限公司 一种屏蔽防护门装置及其制备
US20180061608A1 (en) * 2017-09-28 2018-03-01 Oxford Instruments X-ray Technology Inc. Window member for an x-ray device
US11435652B2 (en) * 2019-03-18 2022-09-06 Sensors Unlimited, Inc. Metallized camera windows
JP6826745B1 (ja) * 2020-09-29 2021-02-10 松村重機建設株式会社 乗物用キャビン及び乗物用放射線防護キャビン
WO2022182964A1 (en) * 2021-02-26 2022-09-01 Leo Cancer Care, Inc. Radiation protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333746A (fr) * 1962-03-20 1963-08-02 Saint Gobain Nucleaire Perfectionnements aux fenêtres d'observation pour enceintes radio-actives
JPH02161399A (ja) * 1989-11-15 1990-06-21 Power Reactor & Nuclear Fuel Dev Corp 放射線を遮へいするコンクリート壁の遮へい窓枠埋込方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555085A (de) * 1956-02-18
FR1243508A (fr) * 1959-09-03 1960-10-14 Commissariat Energie Atomique Procédé pour la régénération de verres exposés à des rayonnements et fenêtre pour cellule à haute activité en comportant application
NL290450A (de) * 1962-03-20
US3283156A (en) * 1963-03-12 1966-11-01 Pittsburgh Plate Glass Co Nuclear radiation shielding window

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333746A (fr) * 1962-03-20 1963-08-02 Saint Gobain Nucleaire Perfectionnements aux fenêtres d'observation pour enceintes radio-actives
JPH02161399A (ja) * 1989-11-15 1990-06-21 Power Reactor & Nuclear Fuel Dev Corp 放射線を遮へいするコンクリート壁の遮へい窓枠埋込方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 415 (P - 1102) 7 September 1990 (1990-09-07) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109930962A (zh) * 2019-04-12 2019-06-25 中国核动力研究设计院 模块化屏蔽窥视窗

Also Published As

Publication number Publication date
ES2167844T3 (es) 2002-05-16
JP4307584B2 (ja) 2009-08-05
EP0859371B1 (de) 2001-11-28
FR2759485B1 (fr) 1999-03-12
DE69802593D1 (de) 2002-01-10
US5937598A (en) 1999-08-17
FR2759485A1 (fr) 1998-08-14
ATE209822T1 (de) 2001-12-15
DK0859371T3 (da) 2002-04-02
JPH10325898A (ja) 1998-12-08
CA2229695A1 (fr) 1998-08-13
PT859371E (pt) 2002-04-29
CA2229695C (fr) 2007-05-29
DE69802593T2 (de) 2002-08-01
TW396349B (en) 2000-07-01

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