EP0233070A2 - Conteneur pour déchets radioactifs absorbants les chocs - Google Patents
Conteneur pour déchets radioactifs absorbants les chocs Download PDFInfo
- 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
Links
Images
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).
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 (fr) | 1987-08-19 |
EP0233070A3 EP0233070A3 (en) | 1988-01-20 |
EP0233070B1 EP0233070B1 (fr) | 1990-09-19 |
Family
ID=25248167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87301075A Expired - Lifetime EP0233070B1 (fr) | 1986-02-07 | 1987-02-06 | Conteneur pour déchets radioactifs absorbants les chocs |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0233070B1 (fr) |
JP (1) | JPS62187295A (fr) |
KR (1) | KR870008336A (fr) |
CA (1) | CA1287696C (fr) |
DE (1) | DE3764969D1 (fr) |
ES (1) | ES2018013B3 (fr) |
Cited By (1)
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)
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)
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 (fr) * | 1978-10-31 | 1980-05-15 | Ericsson Telefon Ab L M | Systeme amortisseur de chocs construit avec des modules |
US4234092A (en) * | 1978-04-17 | 1980-11-18 | Edwin Axel | Container |
EP0049437A1 (fr) * | 1980-10-02 | 1982-04-14 | TRANSNUKLEAR GmbH | Récipient pour le transport et/ou le stockage de substances radioactives comportant un amortisseur |
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 (fr) * | 1984-07-05 | 1986-01-15 | Westinghouse Electric Corporation | Modules pour conditionner les déchets nucléaires |
EP0234890A2 (fr) * | 1986-02-21 | 1987-09-02 | Westinghouse Electric Corporation | Fût pour déchets radioactifs |
-
1987
- 1987-01-26 CA CA000528140A patent/CA1287696C/fr not_active Expired - Lifetime
- 1987-02-05 JP JP62025550A patent/JPS62187295A/ja active Pending
- 1987-02-06 DE DE8787301075T patent/DE3764969D1/de not_active Expired - Fee Related
- 1987-02-06 EP EP87301075A patent/EP0233070B1/fr not_active Expired - Lifetime
- 1987-02-06 KR KR870000941A patent/KR870008336A/ko not_active Application Discontinuation
- 1987-02-06 ES ES87301075T patent/ES2018013B3/es not_active Expired - Lifetime
Patent Citations (10)
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 (fr) * | 1978-10-31 | 1980-05-15 | Ericsson Telefon Ab L M | Systeme amortisseur de chocs construit avec des modules |
EP0049437A1 (fr) * | 1980-10-02 | 1982-04-14 | TRANSNUKLEAR GmbH | Récipient pour le transport et/ou le stockage de substances radioactives comportant un amortisseur |
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 (fr) * | 1984-07-05 | 1986-01-15 | Westinghouse Electric Corporation | Modules pour conditionner les déchets nucléaires |
EP0234890A2 (fr) * | 1986-02-21 | 1987-09-02 | Westinghouse Electric Corporation | Fût pour déchets radioactifs |
Cited By (1)
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 (fr) | 1991-08-13 |
KR870008336A (ko) | 1987-09-25 |
EP0233070B1 (fr) | 1990-09-19 |
ES2018013B3 (es) | 1991-03-16 |
EP0233070A3 (en) | 1988-01-20 |
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