RU94045961A - Fuel element with replacing bodies - Google Patents

Fuel element with replacing bodies

Info

Publication number
RU94045961A
RU94045961A RU94045961/25A RU94045961A RU94045961A RU 94045961 A RU94045961 A RU 94045961A RU 94045961/25 A RU94045961/25 A RU 94045961/25A RU 94045961 A RU94045961 A RU 94045961A RU 94045961 A RU94045961 A RU 94045961A
Authority
RU
Russia
Prior art keywords
fuel
fuel element
during
operational
replaced
Prior art date
Application number
RU94045961/25A
Other languages
Russian (ru)
Inventor
Майнль Рудольф
De]
Рау Петер
Зауерманн Вальтер
Original Assignee
Сименс АГ (DE)
Сименс АГ
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 Сименс АГ (DE), Сименс АГ filed Critical Сименс АГ (DE)
Publication of RU94045961A publication Critical patent/RU94045961A/en

Links

Classifications

    • 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
    • G21C7/00—Control of nuclear reaction
    • G21C7/26—Control of nuclear reaction by displacement of the moderator or parts thereof by changing the moderator concentration
    • G21C7/27—Spectral shift control
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

FIELD: nuclear power engineering. SUBSTANCE: in fuel element cooled with water under pressure mechanical spectral shift is executed. In this cast part of fuel rods is replaced with hollow tubes which contain during first operational cycles of element replacing body, for instance, rod made from zircalloy, and during last operational cycle - liquid moderator. EFFECT: enhanced operational stability. 3 dwg

Claims (1)

В тепловыделяющем элементе, в частности, охлаждаемом водой под давлением предпринимают "mechanical spectrual shift" (механический сдвиг энергетического спектра), причем часть тепловыделяющих стержней заменяют полыми трубками, которые во время первых рабочих циклов элемента содержат замещающее тело, например стержень из циркалоя, а в последних рабочих циклах - жидкий замедлитель. Для такого типа положений, занятых свободным от топлива и не поглощающим материалом, для тепловыделяющих элементов с шестиугольным краем пригодны положения, которые отделены от центра тепловыделяющего элемента, края и друг от друга каждый раз по меньшей мере одним тепловыделяющим стержнем.In a fuel element, in particular, a pressure-cooled water element, a “mechanical spectrual shift” is carried out, and part of the fuel rods are replaced by hollow tubes, which during the first working cycles of the element contain a replacement body, for example, a rod made of zircaloy, and last working cycles - liquid moderator. For this type of positions occupied by a fuel-free and non-absorbing material, positions that are separated from the center of the fuel element, the edges and from each other by at least one heat-generating rod each time are suitable for fuel elements with a hexagonal edge.
RU94045961/25A 1992-04-30 1993-03-18 Fuel element with replacing bodies RU94045961A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4214371A DE4214371A1 (en) 1992-04-30 1992-04-30 FUEL ELEMENT WITH DISPLACEMENT BODIES
DEP4214371.3 1992-04-30

Publications (1)

Publication Number Publication Date
RU94045961A true RU94045961A (en) 1996-09-20

Family

ID=6457910

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94045961/25A RU94045961A (en) 1992-04-30 1993-03-18 Fuel element with replacing bodies

Country Status (8)

Country Link
BG (1) BG62345B1 (en)
CZ (1) CZ284244B6 (en)
DE (1) DE4214371A1 (en)
FI (1) FI945066A0 (en)
HU (1) HU216377B (en)
RU (1) RU94045961A (en)
SK (1) SK281835B6 (en)
WO (1) WO1993022771A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE523253C2 (en) * 2001-06-13 2004-04-06 Telesteps Ab Foldable ladder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK139770B (en) * 1970-02-13 1979-04-09 Risoe Forsoegsanlaeg Fuel unit for a nuclear reactor with parallel fuel rods.
GB1332773A (en) * 1971-03-15 1973-10-03 Atomic Energy Commission Single seed fuel module for a light water breeder reactor
FR2426310A1 (en) * 1978-05-19 1979-12-14 Framatome Sa EASY DISASSEMBLY FUEL ASSEMBLY FOR NUCLEAR REACTOR
EP0054234B1 (en) * 1980-12-16 1986-04-16 Westinghouse Electric Corporation Spectral shift reactor
SU1078938A1 (en) * 1982-04-09 1987-03-23 Предприятие П/Я В-2679 Heat-liberating assembly of fast reactor
DE3309449A1 (en) * 1983-03-16 1984-09-20 Kraftwerk Union AG, 4330 Mülheim FUEL ELEMENT WITH SQUARE CROSS-SECTION FOR WATER-COOLED CORE REACTORS
FR2559941B1 (en) * 1984-02-16 1986-07-04 Framatome Sa NUCLEAR REACTOR OF THE SUB-MODERATE TYPE
US4687627A (en) * 1984-11-13 1987-08-18 Westinghouse Electric Corp. Water displacer rod with hollow annular support pellets having sealed internal voids
DE3515469A1 (en) * 1985-04-29 1986-10-30 Kraftwerk Union AG, 4330 Mülheim Fuel element for a water-cooled nuclear reactor
DE3824082A1 (en) * 1987-07-18 1989-01-26 Toshiba Kawasaki Kk FUEL ARRANGEMENT FOR CORE REACTORS

Also Published As

Publication number Publication date
FI945066A (en) 1994-10-27
HUT70239A (en) 1995-09-28
CZ284244B6 (en) 1998-10-14
DE4214371A1 (en) 1993-11-04
BG62345B1 (en) 1999-08-31
HU216377B (en) 1999-06-28
CZ242494A3 (en) 1995-01-18
WO1993022771A1 (en) 1993-11-11
SK281835B6 (en) 2001-08-06
SK123194A3 (en) 1995-06-07
BG99135A (en) 1995-09-29
FI945066A0 (en) 1994-10-27

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