GB1098299A - Improvements in the control of nuclear reactors - Google Patents
Improvements in the control of nuclear reactorsInfo
- Publication number
- GB1098299A GB1098299A GB52257/64A GB5225764A GB1098299A GB 1098299 A GB1098299 A GB 1098299A GB 52257/64 A GB52257/64 A GB 52257/64A GB 5225764 A GB5225764 A GB 5225764A GB 1098299 A GB1098299 A GB 1098299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- balls
- core
- assembly
- reactor
- absorber
- 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
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/12—Means for moving control elements to desired position
- G21C7/16—Hydraulic or pneumatic drive
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
1,098,299. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 30, 1965 [Dec. 23, 1964], No. 52257/64. Heading G6C. A reactor control system comprises at least one U-tube with its limbs vertical and at least part of which is in the reactor core, a flexible assembly movable through the U-tube and comprising a sequence of neutron absorber units followed by a sequence of units of low neutron capture cross-section, and means whereby the flexible assembly can be moved or retained in position by a pressure differential regulation across the U-tube and in a sense so that the greater the differential the smaller the number of neutron absorber units situated in the reactor core. As shown in Fig. 4, a series of interconnected U-tubes 32 containing a flexible assembly 33 of balls pass through a reactor core 31. The assembly 33 consists of alternating sequences of low absorber balls 34 and absorber balls 35. When it is desired to start up the reactor, a gas pressurizing means 36 on the outermost stem is used to drive the assembly 33 from the shut down position in which the absorber balls 35 are within the core 31. Eventually the assembly 33 will occupy the position shown in Fig. 4, where the core 31 is occupied only by low absorber balls 34. In the event of loss of pressure the assembly 33 will move under the action of gravity so that the absorber balls 35 tend to fall into the core, entering simultaneously in adjacent stems from opposite sides of the core giving a uniform shut down. An intermediate reactivity setting can be obtained by adjusting the pressure differential so that the core is occupied only by some of the absorber balls 35. The gas pressurizing means 36 can either be the coolant circulating pump or a separate pump external to the coolant system of the reactor. The assembly 33 may alternatively be controlled by a liquid flow (as might be used in a water cooled and/or moderated reactor). In other modifications, the balls 34, 35 are linked to provide a string of balls after the fashion of a necklace and auxiliary means are provided (e.g. a compression spring) to force the balls through the U-tubes when the pressure differential falls-or fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB52257/64A GB1098299A (en) | 1964-12-23 | 1964-12-23 | Improvements in the control of nuclear reactors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB52257/64A GB1098299A (en) | 1964-12-23 | 1964-12-23 | Improvements in the control of nuclear reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1098299A true GB1098299A (en) | 1968-01-10 |
Family
ID=10463219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB52257/64A Expired GB1098299A (en) | 1964-12-23 | 1964-12-23 | Improvements in the control of nuclear reactors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1098299A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4789519A (en) * | 1983-09-30 | 1988-12-06 | Hochtemperatur-Reaktorbau Gmbh | Nuclear reactor plant |
| GB2612837A (en) * | 2021-11-15 | 2023-05-17 | Bae Systems Plc | A reactor control system |
-
1964
- 1964-12-23 GB GB52257/64A patent/GB1098299A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4789519A (en) * | 1983-09-30 | 1988-12-06 | Hochtemperatur-Reaktorbau Gmbh | Nuclear reactor plant |
| GB2612837A (en) * | 2021-11-15 | 2023-05-17 | Bae Systems Plc | A reactor control system |
| WO2023084204A1 (en) * | 2021-11-15 | 2023-05-19 | Bae Systems Plc | A reactor control system |
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