ES306784A1 - Transit flask for radioactive objects - Google Patents

Transit flask for radioactive objects

Info

Publication number
ES306784A1
ES306784A1 ES0306784A ES306784A ES306784A1 ES 306784 A1 ES306784 A1 ES 306784A1 ES 0306784 A ES0306784 A ES 0306784A ES 306784 A ES306784 A ES 306784A ES 306784 A1 ES306784 A1 ES 306784A1
Authority
ES
Spain
Prior art keywords
flask
alloy
drum
lead
antimony
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.)
Expired
Application number
ES0306784A
Other languages
Spanish (es)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of ES306784A1 publication Critical patent/ES306784A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/04—Arrangements for expansion and contraction
    • 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
    • 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
    • G21F5/065—Containers provided with a rotatable drum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Closures For Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

An air-tight and shielded flask for protection and transportation of radio-active objects, more particularly irradiated fuel elements, comprises and outer metal easing 2 surrounding a shielding material 1 and provided on its inside surface with at least one pocket 20 bounded by a deformable metal sheet 19 welded to the casing and filled with a fusible alloy which liquefies at a predetermined temperature, means being provided to permit the alloy to escape from the casing 2 to form an expansion volume for the shielding material 1 should a sufficient increase in the temperature inside the flask occur. In the embodiment illustrated, a cavity 3 bounded by a cylindrical jacket 4 at the centre of the flask contains a rotatable drum 5 having six chambers 6 for receiving containers 7 in which fuel elements 8 or other radio-active objects are disposed. The latter are introduced through a rotatable closure drum 9. The drum 5 is rotatable by means of a crank 14 while the drum 9 is rotatable by means of a control rod 13. A handling bar 15, a closure plug 16 and various gaskets 17 and fixing screws 18 complete the flask. A suitable alloy for filling the pockets 20 is a lead-antimony alloy containing 8% by wt. of antimony while a suitable shielding material 1 is a lead-antimony alloy containing 4% by wt. of antimony. The pockets 20 in this embodiment communicate with the outside of the casing 2 through apertures 21 which are normally closed by air-tight plugs 22 of lead-bismuth alloy and preferably also stoppers 23 of plastics material. In the event of an intense fire inside the flask, for example as a result of the violent combustion of a fuel element 8 in the drum 5, the temperature rise in the flask is such as to cause rapid melting of the lead-antimony alloy in the pockets 20. At the same time, the lead-antimony alloy of the shielding material 1 becomes malleable and exerts a thrust on the sheets 19, causing the molten alloy contained in the pockets 20 to be emptied therefrom through the apertures 21 after destruction of the plugs 22 and stoppers 23 as a result of the considerable temperature rise. The stresses on the metal casing 2 are thus rendered negligible and the internal cavity 3 is not deformed.
ES0306784A 1963-12-06 1964-12-05 Transit flask for radioactive objects Expired ES306784A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR956307A FR1386374A (en) 1963-12-06 1963-12-06 Transport castle for radioactive objects

Publications (1)

Publication Number Publication Date
ES306784A1 true ES306784A1 (en) 1966-03-16

Family

ID=8818278

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0306784A Expired ES306784A1 (en) 1963-12-06 1964-12-05 Transit flask for radioactive objects

Country Status (8)

Country Link
BE (1) BE656460A (en)
CH (1) CH426034A (en)
DE (1) DE1257984B (en)
ES (1) ES306784A1 (en)
FR (1) FR1386374A (en)
GB (1) GB1055818A (en)
LU (1) LU47434A1 (en)
NL (1) NL6413669A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483381A (en) * 1966-09-09 1969-12-09 Nat Lead Co Shipping container for radioactive materials having corner shielding means
FR2055761A1 (en) * 1969-08-12 1971-04-30 Robatel Slpi
FR2544542B1 (en) * 1983-04-13 1985-10-18 Commissariat Energie Atomique MOBILE SPEAKER FOR REPLACEMENT AND TRANSPORT OF CONTAMINATED PARTS, AND COMPLEMENTARY CASE OF SUCH A SPEAKER
DD277195A3 (en) * 1987-11-09 1990-03-28 Freiberg Brennstoffinst RADIANT PROTECTION CONTAINERS FOR RADIOACTIVE SUBSTANCES
RU2601868C1 (en) * 2015-12-29 2016-11-10 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Container for radioactive hazardous cargo
CN115339778B (en) * 2022-09-13 2023-07-28 上海阿波罗机械股份有限公司 Radioactive liquid transport container

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE605373A (en) * 1960-07-06

Also Published As

Publication number Publication date
GB1055818A (en) 1967-01-18
NL6413669A (en) 1965-06-07
FR1386374A (en) 1965-01-22
DE1257984B (en) 1968-01-04
CH426034A (en) 1966-12-15
LU47434A1 (en) 1965-01-24
BE656460A (en) 1965-03-16

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