GB2096046A - Transport and storage flask for nuclear fuel - Google Patents
Transport and storage flask for nuclear fuel Download PDFInfo
- Publication number
- GB2096046A GB2096046A GB8208074A GB8208074A GB2096046A GB 2096046 A GB2096046 A GB 2096046A GB 8208074 A GB8208074 A GB 8208074A GB 8208074 A GB8208074 A GB 8208074A GB 2096046 A GB2096046 A GB 2096046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- container
- jacket
- fins
- flash
- nuclear fuel
- 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
- 239000003758 nuclear fuel Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000004794 expanded polystyrene Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000005258 radioactive decay Effects 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
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
-
- 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
- G21F5/10—Heat-removal systems, e.g. using circulating fluid or cooling fins
Abstract
A flask for the transport and storage of irradiated nuclear fuel comprises a hollow cylindrical container (1) having cooling fins (7) surrounded by a jacket (10) of neutron shielding material, e.g. water expanded polystyrene. The jacket can be formed in two semi-cylindrical portions which are hinged together and held tight about the container, being formed with distance pieces (13) which contact the container (1). The jacket (10) is spaced radially from the extremities of the cooling fins (7) to permit circulation of cooling air about the container (1). <IMAGE>
Description
SPECIFICATION
An improved transport and storage flask for nuclear fuel
The present invention concerns a container or flask for the transport and storage of nuclear fuel.
Flasks for irradiated nuclear fuel elements are required to be mechanically robust to withstand possible damage in transit and must safety contain the radioactivity of the nuclear fuel therein. To achieve this a flash is formed with thick walls having a required mechanical strength and which provide gamma shielding. In addition it is necessary to provide neutron shielding and to dissipate the heat generated by radioactive decay.
According to the present invention a flash for the transport and storage of irradiated nuclear fuel comprises a hollow cylindrical container, cooling fins on the exterior of the container, an outer jacket of neutron shielding material surrounding the fins, the jacket being spaced radially from the extremities of the fins to permit circulation of cooling air about the container.
Preferably the jacket is formed in two interconnected parts. The flask can be provided with means to support a sleeve which fits over the jacket of neutron absorbing material when the flask is to be immersed in a storage pond.
An embodiment of the invention will be described further, by way of example, with reference to the accompanying drawings; in which
Figure 1 is a sectional elevation of a flash for the transport and storage of irradiated nuclear fuel; and
Figure 2 is a section on B - B in Figure 1.
A hollow flash for receiving irradiated nuclear fuel comprises a cylindrical container 1, conveniently mild steel lined with stainless steel, and having a removable lid 2. Shock absorbers 3 are attached to the base and the lid of the container and trunnions 4 are provided at the ends of the container for use with lifting gear. Respective drain vent valves 5 and 6 are provided in the base and the lid of the container, the former being shown 90" out of position in Figure 1.
The container is formed with peripheral cooling fins 7 for dissipating heat generated by radioactive decay of the fuel within the container.
Neutron shielding is arranged about the container outside the cooling fins 7. The neutron shielding comprises an annular cylindrical jacket conveniently formed in two semi-cylindrical portions 8 and 9 which fit about the container. The jacket contains a neutron shielding material 10 such as water expanded polystyrene. As shown in Figure 2, the two jacket portions are connected together at one pair of adjacent longitudinal side edges by hinges 11 and are provided with adjustable toggles 12 at the other pair of adjacent longitudinal side edges whereby the jacket portions can be located about the flash and then closed tight to fit against the container and spaced from the cooling fins 7. The inner wall of each jacket portion is formed with spaced apart distance pieces 13 which contact the exterior of the container.The distance pices 13 pass between adjacent cooling fins and are longer than the fins whereby each jacket portion is spaced from the outer ends of the fins. A plurality of equi-spaced slots 14 are formed in each distance piece 13 adjacent the internal wall of each jacket portion.
The walls of the container attenuate gamma radiation and cooling air can circulate about the fins 7 within the jacket. As shown in Figure 2, the container is provided with neutron shielding material 15 at positions opposite the gaps in the jacket formed by the hinges and toggles.
The ends of the container are provided with bagging rings 16 each terminating in a seal which co-operates with a cylindrical sleeve 17 slidably received on the bagging rings. Such a sleeve is located about the jacket of neutron absorbing material when the flash is to be immersed in a pond at a storage site.
In use for the transport of irradiated nuclear fuel the flash is normally in a horizontal orientation and the sleeve 17 is omitted. In this orientation, cooling air can enter and leave the interior of the jacket through the gaps at the hinges and toggles, the flash being arranged such that such gaps are at the top and bottom of the flash as in Figure 2. With the flash vertical, and again with the sleeve 17 omitted, cooling air can be convected upwardly within the jacket as a result of the spacing between the fins and the jacket together with the slots in the distance pieces.
1. A flask for the transport and storage or irradiated nuclear fuel comprising a hollow c.ylindric- al container, cooling fins on the exterior of the container, an outer jacket of neutron shielding material surrounding the fins, the jacket being spaced radially from the extemities of the fins to permit circulation of cooling air about the container.
2. A flash as claimed in claim 1 in which the jacket is formed from two semi-cylindrical portions, the portions being hingedly connected at one pair of adjacent sides and releasably interconnected at the other pair of adjacent sides.
3. Aflash as claimed in claim 1 or 2 including distance pieces on the interior of the jacket cooperable with the exterior of the container.
4. Aflash as claimed in claim 3 including spaced apart slots in each distance piece located at positions adjacent the jacket.
5. Aflash as claimed in claim 2 including neutron shielding material on the container at positions in alignment with gaps at the respective pairs of adjacent sides of the jacket portions.
6. Aflask as claimed in any preceding claim including a removable sleeve located on the contain er about the jacket.
7. A flash for the transport and storage of irradiated nuclear fuel substantially as herein described with reference to and as illustrated in the accompanying drawings.
New claims or amendments to claims filed on 28th June1982 Superseded claims 1,3
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
1. A flask for the transport and storage or irradiated nuclear fuel comprising a hollow c.ylindric- al container, cooling fins on the exterior of the container, an outer jacket of neutron shielding material surrounding the fins, the jacket being spaced radially from the extemities of the fins to permit circulation of cooling air about the container.
2. A flash as claimed in claim 1 in which the jacket is formed from two semi-cylindrical portions, the portions being hingedly connected at one pair of adjacent sides and releasably interconnected at the other pair of adjacent sides.
3. Aflash as claimed in claim 1 or 2 including distance pieces on the interior of the jacket cooperable with the exterior of the container.
4. Aflash as claimed in claim 3 including spaced apart slots in each distance piece located at positions adjacent the jacket.
5. Aflash as claimed in claim 2 including neutron shielding material on the container at positions in alignment with gaps at the respective pairs of adjacent sides of the jacket portions.
6. Aflask as claimed in any preceding claim including a removable sleeve located on the contain er about the jacket.
7. A flash for the transport and storage of irradiated nuclear fuel substantially as herein described with reference to and as illustrated in the accompanying drawings.
New claims or amendments to claims filed on 28th June1982 Superseded claims 1,3
New or amended claims:
New claims or amendments to claims filed on 28th June1982 Superseded claims 1,3
New or amended claims 1. A flask for the transport and storage of irradiated nuclear fuel comprising a hollow cylindrical container, spaced apart cooling fins on the exterior of the container extending about the circumference of the container, an outer jacket of neutron shielding material surrounding the fins, and distance pieces on the jacket cooperable with the exterior of the container and passing between adjacent cooling fins to space the jacket radially from the extremeties of the fins to permit circulation of cooling air about the container.
Claims 4-7 renumbered as 3-6, and appendencies corrected
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8208074A GB2096046B (en) | 1981-04-06 | 1982-03-19 | Transport and storage flask for nuclear fuel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8110642 | 1981-04-06 | ||
| GB8208074A GB2096046B (en) | 1981-04-06 | 1982-03-19 | Transport and storage flask for nuclear fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2096046A true GB2096046A (en) | 1982-10-13 |
| GB2096046B GB2096046B (en) | 1984-10-24 |
Family
ID=26279036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8208074A Expired GB2096046B (en) | 1981-04-06 | 1982-03-19 | Transport and storage flask for nuclear fuel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2096046B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522184A1 (en) * | 1982-02-25 | 1983-08-26 | Kraftwerk Union Ag | RIGID SHIRT FOR PROTECTION AGAINST CONTAMINATION, IN SEVERAL PARTS |
| GB2130520A (en) * | 1982-03-05 | 1984-06-06 | British Nuclear Fuels Ltd | Nuclear fuel transport flasks |
| EP0234890A2 (en) * | 1986-02-21 | 1987-09-02 | Westinghouse Electric Corporation | Improved cases for radioactive waste |
| GB2198682A (en) * | 1986-12-19 | 1988-06-22 | British Nuclear Fuels Plc | Flask for receiving radioactive material |
| EP0312902A2 (en) * | 1987-10-19 | 1989-04-26 | Westinghouse Electric Corporation | Thermal protection shell for radioactive waste containers |
| EP0321093A1 (en) * | 1987-12-18 | 1989-06-21 | British Nuclear Fuels PLC | Transport and storage flask |
| US6438190B2 (en) * | 1999-12-15 | 2002-08-20 | Gnb Gesellschaft Fur Nuklear-Behalter Mbh | Making storage/transport container for radioactive material |
| US7258349B2 (en) | 2003-05-15 | 2007-08-21 | Robert Bosch Gmbh | Hand power tool |
| WO2019089421A1 (en) | 2017-10-30 | 2019-05-09 | Nac International Inc. | Ventilated metal storage overpack (vmso) |
| CN112313756A (en) * | 2018-06-07 | 2021-02-02 | 霍尔泰克国际公司 | Multi-part cask for storing and transporting spent nuclear fuel |
| CN115140446A (en) * | 2022-09-01 | 2022-10-04 | 徐州华汇生物资源催化利用研究院有限公司 | Composite biomass liquid fuel storage device convenient to transport |
-
1982
- 1982-03-19 GB GB8208074A patent/GB2096046B/en not_active Expired
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522184A1 (en) * | 1982-02-25 | 1983-08-26 | Kraftwerk Union Ag | RIGID SHIRT FOR PROTECTION AGAINST CONTAMINATION, IN SEVERAL PARTS |
| GB2130520A (en) * | 1982-03-05 | 1984-06-06 | British Nuclear Fuels Ltd | Nuclear fuel transport flasks |
| EP0234890A2 (en) * | 1986-02-21 | 1987-09-02 | Westinghouse Electric Corporation | Improved cases for radioactive waste |
| EP0234890A3 (en) * | 1986-02-21 | 1988-01-13 | Westinghouse Electric Corporation | Improved cases for radioactive waste |
| GB2198682B (en) * | 1986-12-19 | 1990-01-17 | British Nuclear Fuels Plc | Flask for receiving radioactive material |
| GB2198682A (en) * | 1986-12-19 | 1988-06-22 | British Nuclear Fuels Plc | Flask for receiving radioactive material |
| EP0312902A2 (en) * | 1987-10-19 | 1989-04-26 | Westinghouse Electric Corporation | Thermal protection shell for radioactive waste containers |
| EP0312902A3 (en) * | 1987-10-19 | 1990-01-10 | Westinghouse Electric Corporation | Thermal protection shell for radioactive waste containers |
| EP0321093A1 (en) * | 1987-12-18 | 1989-06-21 | British Nuclear Fuels PLC | Transport and storage flask |
| US4940899A (en) * | 1987-12-18 | 1990-07-10 | British Nuclear Fuels Plc | Transport and storage flask |
| US6438190B2 (en) * | 1999-12-15 | 2002-08-20 | Gnb Gesellschaft Fur Nuklear-Behalter Mbh | Making storage/transport container for radioactive material |
| US7258349B2 (en) | 2003-05-15 | 2007-08-21 | Robert Bosch Gmbh | Hand power tool |
| WO2019089421A1 (en) | 2017-10-30 | 2019-05-09 | Nac International Inc. | Ventilated metal storage overpack (vmso) |
| EP3704716A4 (en) * | 2017-10-30 | 2021-08-04 | NAC International Inc. | Ventilated metal storage overpack (vmso) |
| US11676736B2 (en) | 2017-10-30 | 2023-06-13 | Nac International Inc. | Ventilated metal storage overpack (VMSO) |
| CN112313756A (en) * | 2018-06-07 | 2021-02-02 | 霍尔泰克国际公司 | Multi-part cask for storing and transporting spent nuclear fuel |
| CN115140446A (en) * | 2022-09-01 | 2022-10-04 | 徐州华汇生物资源催化利用研究院有限公司 | Composite biomass liquid fuel storage device convenient to transport |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2096046B (en) | 1984-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |