RU2029997C1 - Repair method for graphite stacking of nuclear uranium-graphite reactor core - Google Patents

Repair method for graphite stacking of nuclear uranium-graphite reactor core Download PDF

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Publication number
RU2029997C1
RU2029997C1 SU915000341A SU5000341A RU2029997C1 RU 2029997 C1 RU2029997 C1 RU 2029997C1 SU 915000341 A SU915000341 A SU 915000341A SU 5000341 A SU5000341 A SU 5000341A RU 2029997 C1 RU2029997 C1 RU 2029997C1
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RU
Russia
Prior art keywords
graphite
tool
masonry
central channel
stacking
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Application number
SU915000341A
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Russian (ru)
Inventor
В.И. Богданов
А.П. Еперин
Л.В. Шмаков
М.В. Шавлов
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Ленинградская атомная электростанция им.В.И.Ленина
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Priority to SU915000341A priority Critical patent/RU2029997C1/en
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Publication of RU2029997C1 publication Critical patent/RU2029997C1/en

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    • 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

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  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

FIELD: nuclear reactors. SUBSTANCE: expanding tool is inserted in reactor graphite stacking through central channel of stack built up of graphite blocks. Tool is used to hold part of stacking above defective block in position; then defective block is removed by fully destructing it with special tool through central channel. Mentioned part of stack is lowered down by means of expanding tool is removed from channel. Space formed in top part of graphite stacking is filled up by new block having characteristic transverse dimensions smaller than diameter of central channel. EFFECT: facilitated procedure. 2 dwg

Description

Изобретение относится к ядерной технике, в частности к эксплуатации ядерных реакторов, и может быть использовано при проведении капитального и профилактических ремонтов последних. The invention relates to nuclear engineering, in particular to the operation of nuclear reactors, and can be used for overhaul and preventive repairs of the latter.

Известен способ восстановления ячеек графитовой кладки, заключающийся в "выпрямлении" осевых каналов графитовых колонн при помощи специального инструмента. Однако указанный способ неприменим при значительном разрушении хотя бы одного из графитовых блоков. A known method of restoring cells of graphite masonry, which consists in "straightening" the axial channels of graphite columns using a special tool. However, this method is not applicable with significant destruction of at least one of the graphite blocks.

Цель изобретения - повышение производительности и качества ремонта кладки и упрощение замены дефектных графитовых блоков. The purpose of the invention is to increase the productivity and quality of repair of masonry and simplify the replacement of defective graphite blocks.

Сущность изобретения состоит в том, что по способу ремонта кладки активной зоны ядерного уран-графитового реактора в кладку через центральный канал графитовой колонны вводят разжимной инструмент, фиксируют с его помощью столб кладки, колонны, находящийся над дефектным блоком, удаляют дефектный блок путем его полного разрушения специальным инструментом через центральный канал, затем вышележащий столб кладки посредством разжимного инструмента опускают на место удаленного блока, выводят из канала разжимной инструмент, а образующуюся в верхней части кладки полость заполняют элементами нового блока, имеющими характерные поперечные размеры меньше диаметра центрального канала. The essence of the invention lies in the fact that according to the method of repairing the masonry of the active zone of a nuclear uranium-graphite reactor, an expandable tool is introduced into the masonry through the central channel of the graphite column, the masonry column is fixed with it, the columns located above the defective block, the defective block is removed by its complete destruction a special tool through the central channel, then the overlying masonry pillar by means of an expanding tool is lowered to the place of the removed unit, the expandable tool is removed from the channel, and the erhney masonry cavity portion is filled with elements of a new block having the characteristic transverse dimensions smaller than the diameter of the central channel.

Сущность изобретения поясняется фиг. 1 и 2, где на фиг. 1 в исходном положении А показаны столб кладки колонны графитовых блоков 1 с дефектным блоком 2, в положении Б показана фиксация столба кладки с помощью разжимного инструмента 3, вводимого в кладку через центральный канал, в положении В показано удаление дефектного блока 2 путем дробления его специальным инструментом 5, вводимым в центральный канал с помощью штанги 4, в положении Г - опускание столба кладки и введение в образовавшуюся полость 6 нового блока 7 с поперечными размерами меньше диаметра центрального канала при помощи инструмента 8 для установки вкладышей, в положении А - отремонтированная ячейка. The invention is illustrated in FIG. 1 and 2, where in FIG. 1, in the initial position A, the masonry column of the column of graphite blocks 1 with the defective block 2 is shown, in position B the fixing of the masonry column with the expanding tool 3, introduced into the masonry through the central channel, is shown in position B; the removal of the defective block 2 by crushing it with a special tool is shown 5, introduced into the central channel using the rod 4, in position Г - lowering the masonry column and introducing into the cavity 6 formed a new block 7 with transverse dimensions smaller than the diameter of the central channel using tool 8 To mount the inserts in position A - Box repaired.

Claims (1)

СПОСОБ РЕМОНТА КЛАДКИ АКТИВНОЙ ЗОНЫ ЯДЕРНОГО УРАН-ГРАФИТОВОГО РЕАКТОРА, отличающийся тем, что в кладку через центральный канал графитовой колонны, набранной из блоков, вводят разжимной инструмент, фиксируют с его помощью часть кладки колонны, находящуюся над дефектным блоком, удаляют дефектный блок путем его полного разрушения специальным инструментом через центральный канал, затем упомянутую часть кладки посредством разжимного инструмента опускают на место удаленного блока, выводят из канала разжимной инструмент, а образующуюся в верхней части графитовой кладки полость заполняют элементами нового блока, имеющими характерные поперечные размеры, меньшие диаметра центрального канала. METHOD FOR REPAIR OF THE MASKET OF THE ACTIVE ZONE OF THE NUCLEAR URANIUM-GRAPHITE REACTOR, characterized in that an expansion tool is introduced into the masonry through the central channel of the graphite column drawn from the blocks, the part of the masonry of the column located above the defective block is fixed with it, and the entire defective block is removed by destruction with a special tool through the central channel, then the aforementioned part of the masonry is lowered by means of an expanding tool to the place of the removed unit, the expandable tool is removed from the channel, and the resulting In the upper part of the graphite masonry, the cavity is filled with elements of a new block having characteristic transverse dimensions smaller than the diameter of the central channel.
SU915000341A 1991-08-20 1991-08-20 Repair method for graphite stacking of nuclear uranium-graphite reactor core RU2029997C1 (en)

Priority Applications (1)

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SU915000341A RU2029997C1 (en) 1991-08-20 1991-08-20 Repair method for graphite stacking of nuclear uranium-graphite reactor core

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SU915000341A RU2029997C1 (en) 1991-08-20 1991-08-20 Repair method for graphite stacking of nuclear uranium-graphite reactor core

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2375770C1 (en) * 2008-08-15 2009-12-10 Открытое акционерное общество "Концерн по производству электрической и тепловой энергии на атомных станциях" (ОАО "Концерн Энергоатом") Method of restoring telescopic joints of channels of fuel cells of nuclear uranium-graphite reactor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Кузнецов А.Г. и Пошехонов В.Д. Специальные ремонтные механизмы и оснастка на АЭС. М.: Энергоатомиздат, 1985, с.69-71. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2375770C1 (en) * 2008-08-15 2009-12-10 Открытое акционерное общество "Концерн по производству электрической и тепловой энергии на атомных станциях" (ОАО "Концерн Энергоатом") Method of restoring telescopic joints of channels of fuel cells of nuclear uranium-graphite reactor

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