EP0233070A2 - Stossabsorbierender transportbehälter für radioaktives Abfallmaterial - Google Patents

Stossabsorbierender transportbehälter für radioaktives Abfallmaterial Download PDF

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Publication number
EP0233070A2
EP0233070A2 EP87301075A EP87301075A EP0233070A2 EP 0233070 A2 EP0233070 A2 EP 0233070A2 EP 87301075 A EP87301075 A EP 87301075A EP 87301075 A EP87301075 A EP 87301075A EP 0233070 A2 EP0233070 A2 EP 0233070A2
Authority
EP
European Patent Office
Prior art keywords
cask
members
metal
face
corners
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
EP87301075A
Other languages
English (en)
French (fr)
Other versions
EP0233070B1 (de
EP0233070A3 (en
Inventor
Charles William Mallory
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of EP0233070A2 publication Critical patent/EP0233070A2/de
Publication of EP0233070A3 publication Critical patent/EP0233070A3/en
Application granted granted Critical
Publication of EP0233070B1 publication Critical patent/EP0233070B1/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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/02—Transportable or portable shielded containers with provision for restricted exposure of a radiation source within the container
    • 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
    • G21F5/08—Shock-absorbers, e.g. impact buffers for containers

Definitions

  • This invention relates to impact-absorbing shipping casks for radioactive waste material.
  • the invention of the cross-referenced patent application is based in part on the fact that most materials exhibit a pseudo material property sometimes called "dynamic flow pressure" which is defined as the energy necessary to displace a unit volume of the material.
  • the dynamic flow pressure of most light and/or soft metals is relatively constant over a wide range of displacement of the metal and has a value slightly higher than the compressive yield strength of the metal which permits the absorbed energy to be substantially directly related to the displacement of the metal.
  • the present invention resides in an impact-absorbing shipping cask for radioactive waste material and of a right regular polygon shape which comprises an individual impact absorbing member fitted to each corner formed between adjacent side faces and the end faces of said cask, each member having an impact absorbing portion consisting of a one-piece, monolithic block of a soft, light metal, configured to lap the cask end face and two adjacent side faces for predetermined distances and having a predetermined thickness, to provide a volume of said metal in excess of the volume of said metal subject to being crushed in specified drop tests.
  • a concrete radioactive waste cask generally designated 10 and of the general type disclosed in U.S. Patent Application S.N. 627,896, filed July 5, 1984, (and to which reference is to be had for details thereof) has sides 12 and opposite ends 14 and 16.
  • the cask is a hexagonally-shaped prism with truncated corners 18. That is, at each corner between each two adjacent sides 12, the corner is truncated.
  • Discrete impact protection blocks generally designated 20 are fitted to each corner formed between adjacent sides 12 and the ends 14 and 16. Thus, for the hexagonally-shaped cask of Figs. 1 and 2, six blocks are required at each end for a total of 12 blocks.
  • the six blocks 20 at each end of the cask are attached to each other by steel L's 22 which, at each block location, are interposed between the block and cask to help spread the impact load (Fig. 4).
  • the blocks and L's in effect form a ring for each end of the cask.
  • the rings at each end of the, cask in turn are secured to each other by the use of rods 24 with turn buckles 26 providing adjustable tension means connecting each block at one end of the cask to the axially aligned block at the opposite end of the cask. This permits the removal of the rings when the casks go into storage, and the subsequent reuse of the rings.
  • One of the single discrete blocks 20 is shown in somewhat more detail in Fig. 3 and includes a center part 28 which fits the truncated corner, and opposite wing parts 30 and 32 which fit to the sides 12.
  • Fig. 5 is intended to aid in understanding the orientation of the cask 10 and blocks 20 for various drops.
  • the numbered arrows indicate the direction of drop with the cask in the various orientations.
  • Arrow 34 is for a flat end drop.
  • Arrow 36 is for a side drop on a flat side.
  • Arrow 38 is for a corner drop on a side corner.
  • Arrow 40 is for a corner drop on a corner.
  • Arrow 42 is for a side drop on a corner.
  • the gross package weight is 50,000 lbs. (2.27 E + 4 kg) and it is ' subjected to a free-drop from one foot (0.3 m).
  • the potential energy is 58,333 foot-pounds (79,100 J) which includes an allowance of two inches (0.05 m) for crush distance.
  • the blocks are of cast aluminum, having a dynamic flow pressure of about 15,000 psi (103 E + 6 Pa). This results in a crush volume of 46.7 inches (3.01 E - 2 m 2 ) in every case and irrespective of the orientation of the package for the drop.
  • the dimensions of the block for the example are as follows. All parts of the block 28, 30, 32 overlap the side 12 of the block in the area designated 44 in Fig. 4 by two inches (0.05 m) and has a three inch (0.07 m) depth from the outer side of the cask to the outer side of the block.
  • the part 46 of the block overlapping the end 14 overlaps for 0.75 inches (0.02 m) and has a depth of three inches (0.07 m) from the end of the cask to the outer end.
  • Each of the wings 30 and 32 have a lateral dimension along their longest sides of 4 inches (0.1 m) while the lateral dimension of the center part 28 at its longest side is 7.86 inches (0.2 m).
  • the arrangement according to the invention provides deceleration values in g's which range from 8.4 to 17.2. This is accomplished using impact protection blocks 20 which do not project more than 3 inches (0.07 m) from the ends and sides.
  • the system alsc provides such impact protection for the entire module by only protecting the twelve corners.
  • the weight of both rings with the specified blocks plus the tie rods and turn buckles is only in the order of about 500 lbs. (22E kg).

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Buffer Packaging (AREA)
  • Vibration Dampers (AREA)
EP87301075A 1986-02-07 1987-02-06 Stossabsorbierender transportbehälter für radioaktives Abfallmaterial Expired - Lifetime EP0233070B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82703786A 1986-02-07 1986-02-07
US827037 1986-02-07

Publications (3)

Publication Number Publication Date
EP0233070A2 true EP0233070A2 (de) 1987-08-19
EP0233070A3 EP0233070A3 (en) 1988-01-20
EP0233070B1 EP0233070B1 (de) 1990-09-19

Family

ID=25248167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301075A Expired - Lifetime EP0233070B1 (de) 1986-02-07 1987-02-06 Stossabsorbierender transportbehälter für radioaktives Abfallmaterial

Country Status (6)

Country Link
EP (1) EP0233070B1 (de)
JP (1) JPS62187295A (de)
KR (1) KR870008336A (de)
CA (1) CA1287696C (de)
DE (1) DE3764969D1 (de)
ES (1) ES2018013B3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971615A1 (fr) * 2011-02-11 2012-08-17 Robatel Ind Ensemble de transport comprenant un emballage et un dispositif d'amortissement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109903873A (zh) * 2019-02-25 2019-06-18 中国原子能科学研究院 一种运输容器缓冲器及其制备方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681041A (en) * 1950-06-01 1952-10-15 Nat Res Dev Frameworks
US3044608A (en) * 1960-09-27 1962-07-17 Louis J Bachleder Shock absorbing shipping container
US4116337A (en) * 1976-04-29 1978-09-26 N L Industries, Inc. Impact absorbing means for shipping cask
WO1980000953A1 (en) * 1978-10-31 1980-05-15 Ericsson Telefon Ab L M Module built shock absorbing system
US4234092A (en) * 1978-04-17 1980-11-18 Edwin Axel Container
EP0049437A1 (de) * 1980-10-02 1982-04-14 TRANSNUKLEAR GmbH Behälter zum Transport und/oder zur Lagerung von radioaktivem Material mit einem Stossdämpfer
US4413735A (en) * 1981-04-21 1983-11-08 Little Thomas J Edge protector and method of making edge protectors
DE3336580A1 (de) * 1982-10-11 1984-04-12 Agip Nucleare S.P.A., Rom Aufpralldaempfer fuer kernbrennelementbehaelter
EP0168219A2 (de) * 1984-07-05 1986-01-15 Westinghouse Electric Corporation Module zur Konditionierung von nuklearen Abfallstoffen
EP0234890A2 (de) * 1986-02-21 1987-09-02 Westinghouse Electric Corporation Fass für radioaktive Abfälle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681041A (en) * 1950-06-01 1952-10-15 Nat Res Dev Frameworks
US3044608A (en) * 1960-09-27 1962-07-17 Louis J Bachleder Shock absorbing shipping container
US4116337A (en) * 1976-04-29 1978-09-26 N L Industries, Inc. Impact absorbing means for shipping cask
US4234092A (en) * 1978-04-17 1980-11-18 Edwin Axel Container
WO1980000953A1 (en) * 1978-10-31 1980-05-15 Ericsson Telefon Ab L M Module built shock absorbing system
EP0049437A1 (de) * 1980-10-02 1982-04-14 TRANSNUKLEAR GmbH Behälter zum Transport und/oder zur Lagerung von radioaktivem Material mit einem Stossdämpfer
US4413735A (en) * 1981-04-21 1983-11-08 Little Thomas J Edge protector and method of making edge protectors
DE3336580A1 (de) * 1982-10-11 1984-04-12 Agip Nucleare S.P.A., Rom Aufpralldaempfer fuer kernbrennelementbehaelter
EP0168219A2 (de) * 1984-07-05 1986-01-15 Westinghouse Electric Corporation Module zur Konditionierung von nuklearen Abfallstoffen
EP0234890A2 (de) * 1986-02-21 1987-09-02 Westinghouse Electric Corporation Fass für radioaktive Abfälle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971615A1 (fr) * 2011-02-11 2012-08-17 Robatel Ind Ensemble de transport comprenant un emballage et un dispositif d'amortissement

Also Published As

Publication number Publication date
DE3764969D1 (de) 1990-10-25
JPS62187295A (ja) 1987-08-15
CA1287696C (en) 1991-08-13
KR870008336A (ko) 1987-09-25
EP0233070B1 (de) 1990-09-19
ES2018013B3 (es) 1991-03-16
EP0233070A3 (en) 1988-01-20

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