GB1226264A - - Google Patents
Info
- Publication number
- GB1226264A GB1226264A GB2749169A GB1226264DA GB1226264A GB 1226264 A GB1226264 A GB 1226264A GB 2749169 A GB2749169 A GB 2749169A GB 1226264D A GB1226264D A GB 1226264DA GB 1226264 A GB1226264 A GB 1226264A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blocks
- members
- graphite
- block
- displaceable
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 5
- 229910002804 graphite Inorganic materials 0.000 abstract 5
- 239000010439 graphite Substances 0.000 abstract 5
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/02—Details
-
- 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)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
1,226,264. Moderator structures. NUCLEAR POWER GROUP Ltd. 11 March, 1970 [30 May, 1969], No. 27491/69. Heading G6C. A reactor core comprises an assembly of graphite blocks arranged vertically in spaced columns with the individual blocks of a column located with respect to one another to maintain alignment, at least some of the uppermost blocks of the columns defining a face of the core, to or from which blocks are inserted into or removed from the core, having laterally displaceable members adapted to engage the sides or displaceable members of corresponding uppermost blocks of adjacent columns to maintain within predetermined limits a fixed spacing of the columns, these members being retractable to allow removal of the uppermost block and the other blocks of a column. In the embodiment shown in Fig. 1, a graphite block 1 of hexagonal cross-section has a central cavity 2 and six laterally displaceable graphite members 3a-3f housed in openings 4 in the sides of the block. This graphite block 1 is for location at the uppermost end of a column of graphite blocks. The members 3 are moved laterally by means of an actuating member 5 which moves axially between the positions shown on the left- and righthand sides of the Figure. The member 5 is of steel and has a flange 5a which acts as a radiation shield. A portion of the member 5 below the flange 5a is tapered and acts against steel balls or rollers 6 prevented from falling when unloaded by springs. The transmission of the displacing force to the members 3 is therefore by means of a rolling action which minimizes the force required. When the block 1 is lifted, the members 3 will tend to retract or simply slide over the surfaces of adjacent blocks. In another embodiment (Fig. 3, not shown), the displaceable members are moved laterally by an enlarged end of a control rod guide tube which has a steel ring insert to directly engage one end of each displaceable member. One purpose of the ring is to accommodate by its distortion extreme conditions of thermal expansion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2749169 | 1969-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1226264A true GB1226264A (en) | 1971-03-24 |
Family
ID=10260465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2749169A Expired GB1226264A (en) | 1969-05-30 | 1969-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1226264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943409A (en) * | 1987-03-31 | 1990-07-24 | National Nuclear Corporation Limited | Reactivity control in nuclear reactors |
-
1969
- 1969-05-30 GB GB2749169A patent/GB1226264A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943409A (en) * | 1987-03-31 | 1990-07-24 | National Nuclear Corporation Limited | Reactivity control in nuclear reactors |
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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 |