EP0336190A1 - Enveloppe pour loger un faisceau de barreaux de combustible contenant du combustible nucléaire - Google Patents

Enveloppe pour loger un faisceau de barreaux de combustible contenant du combustible nucléaire Download PDF

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Publication number
EP0336190A1
EP0336190A1 EP89104924A EP89104924A EP0336190A1 EP 0336190 A1 EP0336190 A1 EP 0336190A1 EP 89104924 A EP89104924 A EP 89104924A EP 89104924 A EP89104924 A EP 89104924A EP 0336190 A1 EP0336190 A1 EP 0336190A1
Authority
EP
European Patent Office
Prior art keywords
bushing
pull rod
head
foot
bush
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.)
Ceased
Application number
EP89104924A
Other languages
German (de)
English (en)
Inventor
Wolfgang Dipl.-Ing. Hummel (Fh)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0336190A1 publication Critical patent/EP0336190A1/fr
Ceased 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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • G21F5/008—Containers for fuel elements

Definitions

  • the invention relates to a liner for receiving fuel rods containing nuclear fuel in accordance with the preamble of claim 1.
  • Such a rifle is known from FIG. 3 of German Offenlegungsschrift 35 06 584.
  • the sleeve of this known sleeve is permanently attached to the sleeve head, while the sleeve base has a latching element that can snap into a latching opening on the sleeve sleeve under the action of a return spring.
  • the empty rifle is first inserted into a recess on the bottom of a holding basket with its bottom part hanging from a lifting and transport device. There, an actuating rod passes through the locking element of the rifle foot and releases the locking of this rifle foot with the rifle jacket. The rifle head and the sleeve casing attached to it are then pulled out of the holding basket with the lifting and transporting device and transported to the side, while the rifle foot is held in the recess on the bottom of the holding basket by the actuating rod.
  • the invention has for its object to develop the known liner so that fuel rods filled in it in a tight packing can also be unloaded again easily and safely.
  • the can can be placed in a tub for unloading fuel rods filled in this can in a tight package. After loosening the attachment of the head-side end of the pull rod from the bush head, the bush head and the bush base are pulled apart, so that the fuel rods, which are filled in a tight packing in the bush, are pushed out of the bush shell with the thrust plate and are caught in the tub.
  • the claims 2 to 5 are directed to advantageous embodiments of the sleeve.
  • the bushing according to FIGS. 1 to 3 has a plate-like bush head 2 and a bush foot 3 which has a plate 3a parallel to the bush head 2.
  • the cross section of the bush head 2 and the plate 3a of the bush foot 3 is square.
  • Bush head 2 and plate 3a also have a congruent contour.
  • the socket base 3 also has a jacket 3b on the outside of the plate 3a, also with a square cross section.
  • a sleeve jacket 4 with a square cross section is placed over both the sleeve head 2 and the sleeve foot 3 and is seated in a gradation on the jacket surface of the sleeve head 2 or the sleeve base 3. While the sleeve jacket 4 is welded to the sleeve head 2, this sleeve jacket 4 is only loosely placed over the sleeve base 3.
  • a pull rod 5 has a thread at both ends. With one end, the head-side end, the pull rod 5 loosely engages through the bush head 2. On the other end, the foot-side end, the pull rod 5 is screwed into a flange nut 6, which passes through the plate 3a and thus the bushing base 3 loosely but without play .
  • This flange nut 6 is secured against rotation by pins designed as screws 7. These screws 7 engage through the flange of the flange nut 6, which rests on the outside of the plate 3a and thus the socket foot 3, into the plate 3a of the socket foot 3, into which they are screwed and on which the flange and thus the flange nut 6 also screwed to them.
  • a locking wire 8 engages through a transverse bore in the heads of the screws 7 on the outside of the plate 3a.
  • step 9 Between the threads on both ends of the pull rod 5 there is a step 9 at the head end of the pull rod 5.
  • a sleeve 10 is loosely pushed over this step 9 and engages at its end facing the bushing foot 3 a push plate 11 welded externally at this end.
  • This push plate 11, which is arranged at right angles to the pull rod 5, also has a square cross section and extends with clear play to the inside of the sleeve casing 4.
  • the sleeve 10 with the push plate 11 is also included attached to a stop body which is a nut 12 which is screwed onto the inside of the bush head 2 onto the thread on the head-side end of the pull rod 5.
  • the bushing head 2 On the outside of the bushing head 2, the bushing head 2 is fastened with a further nut 13, which is also screwed onto the thread at the head-side end of the pull rod 10 and is secured against self-loosening by a locking plate 14 worked on the nut 13.
  • This locking plate 14 is located on the nut 13.
  • An elevation on the outside of the bush head 2 is penetrated by the head end of the pull rod 5.
  • the locking plate 14 bears against a slope which is formed on the jacket of this elevation.
  • a holding basket 22 with a square cross section is shown in longitudinal section on the bottom 21 of a basin filled with water.
  • cylinders 23 with displaceable pistons (not visible) with piston rods 24 are arranged one above the other, each carrying a horizontal pressure bar 25.
  • two cylinders are arranged with pressure strips 25 located opposite one another in pairs. These cylinders can be acted upon on both sides of the piston in each case with a hydraulic medium.
  • a handling gripper 26 located above the basin can reach behind the bush head 2 of the bushing according to FIGS. 1 to 3 through two bushings 15 in the bush head 2 parallel to the pull rod 5 and pick up the bush so that it hangs on the handling gripper 26 with the vertical longitudinal axis of the pull rod 5.
  • Such a bush hanging on the handling gripper 26 is first lowered into the empty holding basket 22, in which all piston rods 24 are inserted into the cylinders 23, and the bushing foot 3 is centered in a recess 28 in the bottom of the holding basket 22.
  • the nut 13 is first loosened from the head end of the pull rod 5 and the bush head 2 with the sleeve jacket 4 welded to it is lifted off the sleeve foot 3 and pulled out of the holding basket 22 and transported to the side. Then the nut 12 is loosened at the head end of the pull rod 5 and the sleeve 10 with the push plate 9 is pulled off the pull rod 5 with the aid of another handling gripper and transported to the side.
  • a bundle of fuel rods with spent nuclear fuel in a tight packing is then placed vertically on the inside of the socket foot 3 in the holding basket 22 with a sealing device (not shown in detail) and held in this tight packing by the pressure bars 25 on the piston rods 24 extended from the cylinders 23.
  • the pull rod 5 can also be easily unscrewed from the flange nut 6 and removed from the socket base 3 and later, like the fuel rods 27, placed on the socket base 3 with the sealing device and screwed into the flange nut 6 on the socket base 3.
  • the handling gripper with the sleeve 10 attached to it, including the thrust plate 11, is moved over the holding basket 22 and the sleeve 10 is pushed again over the head end of the pull rod 5 and fastened by screwing the screw 12 onto the pull rod 5.
  • the handling gripper 26 with the sleeve head 2 and the sleeve casing 4 is moved over the holding basket 22 and the sleeve casing 4, as shown in FIG. 4, is pushed over the bundle of densely packed fuel rods 27 in the holding basket 22 from top to bottom.
  • the piston rods 24 carrying the pressure bars 25 are moved successively from top to bottom into the cylinders 23, each shortly before the lower end, ie the foot end of the sleeve casing 4, has reached the pressure bars in question.
  • the sleeve casing 4 is placed over the sleeve foot 3, and the handling gripper 26 can be released from the sleeve head 2. Then the nut 13 with the locking plate 14 is screwed back onto the head end of the pull rod 10.
  • the bushing according to FIGS. 1 to 3 is now filled with fuel rods 27 in a tight packing.
  • the load-bearing element of the bushing is the pull rod 5, which, if necessary, can also have a decentralized position indicated in FIG. 5.
  • the bush head 2, the thrust plate 11 and the foot end of the sleeve casing 4 can be provided with passage openings (32 and 33) for a coolant for removing post-decay heat, which the fuel rods used in the bush according to FIGS. 1 to 3 can emit.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
EP89104924A 1988-03-31 1989-03-20 Enveloppe pour loger un faisceau de barreaux de combustible contenant du combustible nucléaire Ceased EP0336190A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811104 1988-03-31
DE3811104 1988-03-31

Publications (1)

Publication Number Publication Date
EP0336190A1 true EP0336190A1 (fr) 1989-10-11

Family

ID=6351234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104924A Ceased EP0336190A1 (fr) 1988-03-31 1989-03-20 Enveloppe pour loger un faisceau de barreaux de combustible contenant du combustible nucléaire

Country Status (3)

Country Link
US (1) US4961900A (fr)
EP (1) EP0336190A1 (fr)
JP (1) JPH0212094A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654873A (ja) * 1992-02-19 1994-03-01 Iwao Kasahara 外反母指矯正用サポ−タ
JPH0713686Y2 (ja) * 1991-06-14 1995-04-05 きみ子 清永 矯正足袋
JPH0741460Y2 (ja) * 1992-07-28 1995-09-27 巌 笠原 外反母指矯正用サポータ
US5342158A (en) * 1992-09-30 1994-08-30 Gamma-Metrics Handling and deploying radioactive sources
JPH06304195A (ja) * 1993-04-26 1994-11-01 Iwao Kasahara 外反母指矯正用サポータ
JPH06304194A (ja) * 1993-04-26 1994-11-01 Iwao Kasahara 外反母指矯正用サポータ
US6318373B1 (en) 1999-09-20 2001-11-20 Iwao Kasahara Corrective supporter for correcting hallux valgus and digitus verus minimi deformity
US11515054B2 (en) 2011-08-19 2022-11-29 Holtec International Method of retrofitting a spent nuclear fuel storage system
EP3134900B1 (fr) * 2014-04-24 2019-10-23 Holtec International Système de stockage pour combustible nucléaire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH458552A (de) * 1965-04-09 1968-06-30 Gulf General Atomic Inc Behälter für eine Mehrzahl radioaktiver Elemente eines Kernreaktors
EP0128236A1 (fr) * 1983-06-03 1984-12-19 Siemens Aktiengesellschaft Dispositif et méthode de manutention pour le stockage des éléments combustibles irradiés
EP0193041A1 (fr) * 1985-02-25 1986-09-03 Siemens Aktiengesellschaft Dispositif pour le compactage sous une densité donnée de barres de combustible nucléaire ou de matériel absorbeur de neutrons dans un récipient

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560532A (en) * 1982-04-15 1985-12-24 Westinghouse Electric Corp. Nuclear fuel assembly
US4508679A (en) * 1982-08-20 1985-04-02 General Electric Company Nuclear fuel assembly spacer
JPS60256096A (ja) * 1984-06-01 1985-12-17 株式会社日立製作所 原子炉用燃料貯蔵方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH458552A (de) * 1965-04-09 1968-06-30 Gulf General Atomic Inc Behälter für eine Mehrzahl radioaktiver Elemente eines Kernreaktors
EP0128236A1 (fr) * 1983-06-03 1984-12-19 Siemens Aktiengesellschaft Dispositif et méthode de manutention pour le stockage des éléments combustibles irradiés
EP0193041A1 (fr) * 1985-02-25 1986-09-03 Siemens Aktiengesellschaft Dispositif pour le compactage sous une densité donnée de barres de combustible nucléaire ou de matériel absorbeur de neutrons dans un récipient

Also Published As

Publication number Publication date
JPH0212094A (ja) 1990-01-17
US4961900A (en) 1990-10-09

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