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GB1454239A - Process for handling fuel assemblies which have been irradiated in a fast neutron nuclear reactor and installation for performing the process - Google Patents

Process for handling fuel assemblies which have been irradiated in a fast neutron nuclear reactor and installation for performing the process

Info

Publication number
GB1454239A
GB1454239A GB2814174A GB2814174A GB1454239A GB 1454239 A GB1454239 A GB 1454239A GB 2814174 A GB2814174 A GB 2814174A GB 2814174 A GB2814174 A GB 2814174A GB 1454239 A GB1454239 A GB 1454239A
Authority
GB
United Kingdom
Prior art keywords
assembly
flask
hood
spent
coffin
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
GB2814174A
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 GB1454239A publication Critical patent/GB1454239A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C19/00Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/18Apparatus for bringing fuel elements to the reactor charge area, e.g. from a storage place
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C19/00Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/32Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

1454239 Fuelling reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 25 June 1974 [27 June 1973] 28141/74 Heading G6C In a fast reactor comprising an open pressure vessel 2 hung in a protective enclosure 1 which has thick concrete walls and which is closed by a horizontal concrete slab 7 disposed above the level 4 of a liquid metal coolant for the reactor core 3, an irradiated fuel assembly 12 which has a high residual power and which has been lifted out of the core 3 by the handling device 10, 11 is immediately removed from the pressure vessel 2, without any storage time in the pressure vessel, and transferred to a receptacle outside the pressure vessel while immersed in liquid metal within a handling flask 14, e.g. of the type disclosed in Specification 1,332,888, adapted to remove the heat evolved by the assembly. The flask is moved up along an inclined surface 15 by means of a winch (not shown) into a pivoting hood 17, e.g. of the type disclosed in Specification 1,408,698. After rotation of the hood 17 through 180 degrees, the flask 14 is lowered down an inclined surface 20 extending through slab 7 into a chamber 21 within the concrete walls of enclosure 1. Chamber 21 contains a receptacle 22 filled to a level 23 with liquid metal and provided with a vertical pocket 24 adapted to receive the flask 14. A handling device 26 mounted in a rotatable plug 25 enables the assembly 12 to be lifted from the flask 14 on to a turntable 31 by means of which it is moved into vertical alignment with one of several orifices 37. Spent fuel assemblies can be placed in a number of concentric rings on the tray 30 of turntable 31 from which they are removed by the grab of a transfer carriage 40 and introduced into a processing passage lock 38 bounded by a concrete wall. 39. In a constructional variant (Fig. 2, not shown) the carriage 42 is replaced by a turntable (42a). A sealing element 45 in the floor 51 of the lock 38 separates the contaminated atmosphere within the lock 38 and above the liquid metal in receptacle 22 from the atmosphere within a cell 46 where the spent assembly is placed inside a coffin 47. Means (not shown) associated with the element 45 are operated to seal the mouth of the coffin top in a leak-proof manner. The coffin 47 is then moved across cell 46 by means of a carriage 48 running on rails 49 and brought under an exit 50 covered by a hood 52 to protect the environment from radiation coming from the spent assembly through the coffin wall. The hood 52 with the coffin in it is then moved to above an aperture communicating with a shielded transportation flask 54 borne by a lifting system 55. The flask 54 which usually contains a number of spent assemblies is then taken to a reprocessing works. By means of the pivoting hood 17 a spent fuel assembly is removed from the core 3 simultaneously as a fresh fuel assembly is charged into the hood, whereafter the hood is rotated through 180 degrees so that the spent assembly can be lowered into the receptacle 22 and the fresh assembly lowered into the pressure vessel 2. Accordingly the receptacle 22 has, with advantage, a passage for introducing the fresh assemblies which are disposed in a ring reserved for such assemblies on the periphery of the turntable tray 30.
GB2814174A 1973-06-27 1974-06-25 Process for handling fuel assemblies which have been irradiated in a fast neutron nuclear reactor and installation for performing the process Expired GB1454239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7323506A FR2235462B1 (en) 1973-06-27 1973-06-27

Publications (1)

Publication Number Publication Date
GB1454239A true GB1454239A (en) 1976-11-03

Family

ID=9121657

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2814174A Expired GB1454239A (en) 1973-06-27 1974-06-25 Process for handling fuel assemblies which have been irradiated in a fast neutron nuclear reactor and installation for performing the process

Country Status (4)

Country Link
ES (1) ES427732A1 (en)
FR (1) FR2235462B1 (en)
GB (1) GB1454239A (en)
IT (1) IT1014379B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069098A (en) * 1976-02-23 1978-01-17 Westinghouse Electric Corporation Ex-vessel nuclear fuel transfer system
FR2410340A1 (en) * 1977-11-29 1979-06-22 Commissariat Energie Atomique CLOSING DEVICE FOR AN ASSEMBLY HANDLING POT
FR2488719B1 (en) * 1980-08-14 1985-10-04 Commissariat Energie Atomique INSTALLATION AND METHOD FOR HANDLING FAST NEUTRAL NUCLEAR REACTOR ASSEMBLIES
FR2490863A1 (en) * 1980-09-22 1982-03-26 Novatome DEVICE FOR TRANSFERRING COMBUSTIBLE ASSEMBLIES FOR FAST NEUTRON REACTOR
FR2995437B1 (en) 2012-09-07 2014-10-10 Commissariat Energie Atomique NUCLEAR CONTROL DEVICE FOR LIQUID COOLED LIQUID REACTOR TYPE RNR.

Also Published As

Publication number Publication date
ES427732A1 (en) 1977-07-01
IT1014379B (en) 1977-04-20
FR2235462B1 (en) 1976-11-12
FR2235462A1 (en) 1975-01-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee