GB1355858A - Nuclear fuel assembly containing burnable poison - Google Patents

Nuclear fuel assembly containing burnable poison

Info

Publication number
GB1355858A
GB1355858A GB4687271A GB4687271A GB1355858A GB 1355858 A GB1355858 A GB 1355858A GB 4687271 A GB4687271 A GB 4687271A GB 4687271 A GB4687271 A GB 4687271A GB 1355858 A GB1355858 A GB 1355858A
Authority
GB
United Kingdom
Prior art keywords
fuel
discs
poison
rods
burnable poison
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
GB4687271A
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.)
Westinghouse Electric Sweden AB
Original Assignee
ASEA Atom AB
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 ASEA Atom AB filed Critical ASEA Atom AB
Publication of GB1355858A publication Critical patent/GB1355858A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/02—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect
    • G21C7/04—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect of burnable poisons
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/326—Bundles of parallel pin-, rod-, or tube-shaped fuel elements comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods
    • G21C3/328—Relative disposition of the elements in the bundle lattice
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • 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

Abstract

1355858 Fuel elements ASEA-ATOM AB 8 Oct 1971 [12 Oct 1970] 46872/71 Heading G6C A nuclear fuel assembly comprises a plurality of fuel rods 4 each containing a stack of fuel pellets 5 and a number of fuel-poison discs 7 having particles of burnable poison dispersed in a matrix of fuel, these discs 7 alternating with the fuel pellets 5 in such a way that within one and the same fuel rod 4 the distance between any two adjacent discs 7 is greater than about 4 cm. but less than about 20 cm. preferably between 5 and 10 cm. The fuel pellets 5 may be of UO 2 and the fuel-poison discs 7 of a solid solution of discrete particles, about 10 Ám. in size, of Gd 2 O 3 in UO 2 , each disc 7 containing from 25 to 150 mg. of Gd 2 O 3 . Preferably the fuel-poison discs 7 in one fuel rod are axially displaced in relation to the discs in another, adjacent fuel rod. Where the corner fuel rods are of smaller diameter than the other fuel rods of the assembly the complication of manufacturing two series of discs having different diameters is avoided by not providing the narrower corner rods with burnable poison.
GB4687271A 1970-10-12 1971-10-08 Nuclear fuel assembly containing burnable poison Expired GB1355858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13757/70A SE335890B (en) 1970-10-12 1970-10-12

Publications (1)

Publication Number Publication Date
GB1355858A true GB1355858A (en) 1974-06-05

Family

ID=20297937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4687271A Expired GB1355858A (en) 1970-10-12 1971-10-08 Nuclear fuel assembly containing burnable poison

Country Status (5)

Country Link
DE (1) DE2150307A1 (en)
FR (1) FR2110352B3 (en)
GB (1) GB1355858A (en)
IT (1) IT943127B (en)
SE (1) SE335890B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE377216B (en) * 1973-06-26 1975-06-23 Asea Atom Ab
ZA78703B (en) * 1977-03-15 1979-01-31 Westinghouse Electric Corp Low reactivity penalty burnable poison rods
JPS59184885A (en) * 1983-04-06 1984-10-20 株式会社日立製作所 Fuel assembly
CN113963759B (en) * 2021-09-17 2024-04-02 华南理工大学 Multi-scale coupling calculation method and device for layered burnup of dispersed burnup poison particles

Also Published As

Publication number Publication date
FR2110352B3 (en) 1974-06-07
SE335890B (en) 1971-06-14
FR2110352A3 (en) 1972-06-02
IT943127B (en) 1973-04-02
DE2150307A1 (en) 1972-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees