WO2020251384A1 - Housse de conteneur de transport et de conditionnement pour assemblages de pastilles de combustible usé - Google Patents

Housse de conteneur de transport et de conditionnement pour assemblages de pastilles de combustible usé Download PDF

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Publication number
WO2020251384A1
WO2020251384A1 PCT/RU2019/000416 RU2019000416W WO2020251384A1 WO 2020251384 A1 WO2020251384 A1 WO 2020251384A1 RU 2019000416 W RU2019000416 W RU 2019000416W WO 2020251384 A1 WO2020251384 A1 WO 2020251384A1
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WO
WIPO (PCT)
Prior art keywords
segments
disc
discs
cover
aluminum
Prior art date
Application number
PCT/RU2019/000416
Other languages
English (en)
Russian (ru)
Inventor
Сергей Анатольевич КУЗЬМИНЫХ
Роман Владимирович ШАРОВ
Алексей Юрьевич ЛЕПЕШКИН
Александр Владимирович СУДАКОВ
Алексей Викторович ТАБЕЕВ
Original Assignee
Акционерное Общество "Федеральный Центр Ядерной И Радиационной Безопасности"
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 Акционерное Общество "Федеральный Центр Ядерной И Радиационной Безопасности" filed Critical Акционерное Общество "Федеральный Центр Ядерной И Радиационной Безопасности"
Publication of WO2020251384A1 publication Critical patent/WO2020251384A1/fr

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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
    • G21F5/00—Transportable or portable shielded containers

Definitions

  • the invention relates to nuclear technology, in particular to covers of transport packaging kits (TUK) for transportation and storage of spent fuel assemblies (SFA) of VVER-1000/1200/1300 power units and can be used in transport packaging kits for placement during transportation and / or storage SFA.
  • TUK transport packaging kits
  • SFA spent fuel assemblies
  • the disadvantage of the known cover is the limitation on the permissible mechanical loads on the cover due to the insignificant strength characteristics of the plates made of materials with high thermal conductivity, for example, aluminum.
  • the closest technical solution to the claimed invention is a cover of a transport and packaging kit for spent fuel assemblies, containing a base, a central pillar fixed on the base, perforated steel disks located on a rack in height and perforated aluminum disks of variable thickness made of separate segments, where perforation of steel and aluminum disks in the axial direction coincides, as well as pipes installed in the case through the perforation of the disks (patent for a useful model of the Russian Federation "153580, publ. 27.07.2015).
  • TUK one of the main requirements for TUK covers is high mechanical strength, which ensures the preservation of the integrity of the geometric shape under normal and emergency conditions of transportation, which ensures the preservation of control over the criticality of the mass of nuclear material during operation.
  • the technical problem of the invention is the preservation of the integrity of the geometric shape of the TUK cover under normal and emergency conditions of transportation, which will, as a result, maintain control over the criticality of the mass of nuclear material during transportation.
  • the technical result of the invention is to increase the mechanical strength of the TUK cover.
  • the cover of the transport and packaging kit for spent fuel assemblies comprising a base, a central post installed on the base, perforated steel disks fixed to the column in height, and perforated aluminum disks of variable thickness made of separate segments, where the perforation of steel and aluminum disks in the axial direction coincides, as well as pipes installed through the perforation of the disks, at least two aluminum disks are located between the perforated steel disks, the joints of the segments of each subsequent aluminum disk are displaced relative to the joints of the segments of the previous aluminum disk, while the perforation of the segments of one disk is displaced by the angle of displacement of the joints segments of another disk, the thickenings are made along the outer diameter of the disk segments, the disks are adjacent to each other with thickenings, the cover is additionally equipped with ties, holes are made along the outer perimeter of the disks, the ties are skipped cut holes.
  • every third aluminum disc is laid upside down.
  • An increase in the mechanical strength of the cover in comparison with the prototype is achieved by tightly pressing the discs against each other while displacing the joints of the disc segments located one on top of the other.
  • Thickening of the segments of the aluminum discs along the outer diameter ensures that they are pressed against each other in height from the outer side and the joining of the segments is stationary in the radial direction to form a single disc, while maintaining a gap for heat removal between the central parts of the segments.
  • the presence of ties passing through the discs along the entire height fixes the cover structure as a whole due to the vertical compression force.
  • Pressing the segments together in a radial direction is an alternative to the tongue-and-groove connection, thereby simplifying the manufacture of the segments and avoiding breakage of the projections.
  • the tight joint in the axial direction of the discs along the outer diameter additionally protects against gamma radiation emanating from the SFA in the radial direction.
  • the declared design of the cover has mechanical strength that ensures the integrity of the geometric shape under normal and emergency conditions of transportation, which maintains control over the criticality of the mass of nuclear material at any time.
  • FIG. 1 shows a longitudinal section of the cover
  • FIG. 2 - segment of type "A” in Fig. 3 - segment of type "B”
  • Fig. 4 is a cross-section of the cover through a series of segments of the "A” type
  • FIG. 5 is a cross-section of the cover through a series of “A” type segments.
  • the cover is a metal structure consisting of aluminum disks 1 and steel disks 2 located close to each other in height.
  • Aluminum disks 1 consist of segments of type "A" and type "B", which have a thickening in the outer diameter.
  • Discs 1 and discs 2 have perforations 3 in the form of hexagonal holes. Perforation of stacked discs 1 and 2 matches.
  • Eighteen hexagonal pipes 3 are installed through the perforation of the disks.
  • the hexagonal pipes 3 are installed in the support disk 4 and are fixed from above by the upper disk 5, made of high-strength corrosion-resistant steel.
  • the segments are made of two types: a segment of type "A” 8 (Fig. 4) and a segment of type "B" 9 (Fig. 5).
  • Each subsequent disk 1 (a row of segments) is shifted relative to the previous disk 1 (a row of segments) so that the joints between segments of one disk 1 overlap the next disk 1 in the form brickwork.
  • the disks 1 are supported on each other by the bulges of the outer diameter of the segments.
  • a central pillar 7 is welded to the supporting disk 4, which serves as a supporting element of the cover, on which all its other components are located.
  • the stand 7 in the upper part is equipped with a grip 8, with which the empty cover is installed and removed from the container body.
  • connection of all parts of the cover into a single structure is provided by eighteen ties 10 located along the perimeter of the cover, by fixing with nuts 11 with washers 12.
  • the ties 10 are passed through holes 13 made in the thickenings of the segments.
  • a stand 7 is welded to the supporting disk 4 from above with a socket welded to it in the upper part 8.
  • eighteen ties 10 are screwed into threaded holes with an equal angular pitch, sleeve 6 is put on each tie 10 and installed in the groove of the supporting disk 4, the insert 9 is put on the rack 7. Then the insert 9 is put on the bushings 6, passing through the holes 13 through the ties 10 and on the insert 9, the first disc 1 is installed, consisting of six segments of the "A" type (Fig. 2). The perforation of the inner surface of the segments should coincide with the perforation of the support disk 4.
  • the bushing 6 is put on again and installed in the groove of the segment, the insert 9 is put on the post 7 again.
  • the second disc 1 is installed, consisting of six segments of the "B" type (Fig. 3), the joints in this disc 1 between the segments are displaced relative to the joints of the first disc (brickwork), while the perforation of the inner surface of the segments of the second disc should coincide with the perforation segments of the first disc 1.
  • sleeve 6 is put on again on each tie 10 and installed in the groove of the segment, insert 9 is put on the post 7 again.
  • insert 9 is put on the sleeves 6, passing through holes 13 through ties 10 and the third disc 1 is installed on insert 9 of six segments of type "A" (Fig. 2).
  • the joints in this disc 1 between the segments are displaced relative to the joints of the second disc 1, while the perforation of the inner surface of the segments of the third disc must coincide with the perforation of the segments of the second disc.
  • sleeve 6 is put on again on each tie 10 and installed in the groove of the segment, insert 9 is put on the post 7 again.
  • insert 9 is put on the sleeve 6, passing through holes 13 through ties 10, and the fourth disc 1 is installed on insert 9, consisting of six inverted "Type" B "segments (Fig. 3).
  • the joints in this disk 1 between the segments are also displaced relative to the joints of the third disk 1, while the perforation of the inner surface of the segments of the fourth disk 1 should coincide with the perforation of the segments of the third disk 1.
  • the disks are stacked closely. Ten more disks 1 are stacked similarly, forming a tier of a cover.
  • the first and second tier of the cover are formed of fourteen discs 1 each, the third tier of the cover consists of twelve discs, the fourth, fifth, sixth tier of the cover of eleven discs each, and the seventh tier consists of one disc.
  • hexagonal pipes are installed in the hexagonal holes of the disks 1 and 2, at the bottom they abut against the recesses of the support disk 4, and at the top they abut against the recesses of the upper disk 5, installed with holes on the ties 10 and fixed with nuts 11 with washers 12.
  • the declared design of the canister allows for the safe transportation of spent nuclear fuel from nuclear reactors of the VVER-1000/1200 type.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

L'invention se rapporte au domaine de l'industrie du nucléaire, concerne notamment des housses pour des ensembles de transport et conditionnement (CTC) pour le transport et le stockage d'assemblages de pastilles de combustible usé (APCU) de tranches de réacteurs VVER - 100/1200/1300, et peut être utilisée dans des ensembles de transport et de conditionnement pour l'agencement lors du transport et/ou du stockage des APCU. Cette housse consiste en une structure métallique comprenant des disques d'acier et disques d'aluminium perforés et disposés étroitement les uns au-dessus des autres dans le sens de la hauteur. Les disques d'aluminium comprennent des segments de type "A" et de type "B" comportant un épaississement sur le diamètre externe. Les perforations des disques disposés les uns au-dessus des autres coïncident. Dix-huit tubes hexagonaux sont disposés à travers les perforations des disques. Les tubes hexagonaux sont disposés sur un disque de support et sont fixés en haut par un disque supérieur. Six segments d'un même type disposés en rangées étroitement les unes contre les autres définissent un disque d'aluminium perforé. Chaque disque (rangée de segments) suivant est décalé par rapport au disque (rangée de segments) précédent de sorte que les joints entre les segments d'un disque se recouvrent avec le disque suivant à la manière d'un briquetage. Les disques reposent les uns sur les autres via les épaississements du diamètre externe des segments. Cette configuration présentant un décalage des joints entre les segments permet de garantir les caractéristiques de solidité voulues de la housse lors de son exploitation et dans le cas d'accidents.
PCT/RU2019/000416 2019-06-11 2019-06-11 Housse de conteneur de transport et de conditionnement pour assemblages de pastilles de combustible usé WO2020251384A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2019118126 2019-06-11
RU2019118126A RU2707504C1 (ru) 2019-06-11 2019-06-11 Чехол транспортного упаковочного контейнера для отработавших тепловыделяющих сборок

Publications (1)

Publication Number Publication Date
WO2020251384A1 true WO2020251384A1 (fr) 2020-12-17

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Country Status (2)

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RU (1) RU2707504C1 (fr)
WO (1) WO2020251384A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1083577B1 (fr) * 1999-09-09 2004-04-14 Mitsubishi Heavy Industries, Ltd. Conteneur, procédé de fabrication d'un conteneur et pièce de formage
FR2932601A1 (fr) * 2008-06-17 2009-12-18 Soc Generale Pour Les Techniques Nouvelles Sgn Interne d'etui et etui pour l'entreposage a sec d'elements combustibles irradies ; procede d'entreposage
RU140520U1 (ru) * 2014-02-12 2014-05-10 Открытое акционерное общество "Инженерный центр ядерных контейнеров" (ОАО "ИЦЯК") Чехол для отработавшего ядерного топлива
RU153580U1 (ru) * 2015-01-27 2015-07-27 Акционерное общество "Инженерный центр ядерных контейнеров" (АО "ИЦЯК") Чехол для отработавшего ядерного топлива
RU2642853C1 (ru) * 2017-02-10 2018-01-29 Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") Чехол контейнера для транспортирования и хранения отработавшего ядерного топлива

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2458417C1 (ru) * 2011-04-22 2012-08-10 Открытое акционерное общество "Конструкторское бюро специального машиностроения" Чехол для отработавших тепловыделяющих сборок

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1083577B1 (fr) * 1999-09-09 2004-04-14 Mitsubishi Heavy Industries, Ltd. Conteneur, procédé de fabrication d'un conteneur et pièce de formage
FR2932601A1 (fr) * 2008-06-17 2009-12-18 Soc Generale Pour Les Techniques Nouvelles Sgn Interne d'etui et etui pour l'entreposage a sec d'elements combustibles irradies ; procede d'entreposage
RU140520U1 (ru) * 2014-02-12 2014-05-10 Открытое акционерное общество "Инженерный центр ядерных контейнеров" (ОАО "ИЦЯК") Чехол для отработавшего ядерного топлива
RU153580U1 (ru) * 2015-01-27 2015-07-27 Акционерное общество "Инженерный центр ядерных контейнеров" (АО "ИЦЯК") Чехол для отработавшего ядерного топлива
RU2642853C1 (ru) * 2017-02-10 2018-01-29 Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") Чехол контейнера для транспортирования и хранения отработавшего ядерного топлива

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Publication number Publication date
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