JPS646892A - Core internal structure of nuclear reactor - Google Patents
Core internal structure of nuclear reactorInfo
- Publication number
- JPS646892A JPS646892A JP62162676A JP16267687A JPS646892A JP S646892 A JPS646892 A JP S646892A JP 62162676 A JP62162676 A JP 62162676A JP 16267687 A JP16267687 A JP 16267687A JP S646892 A JPS646892 A JP S646892A
- Authority
- JP
- Japan
- Prior art keywords
- during
- pipe
- shut
- piping
- reactivity during
- 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.)
- Pending
Links
Classifications
-
- 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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
PURPOSE:To increase burnup and to improve fuel economy by decreasing a difference in reactivity during the operation and shut-down of a nuclear reactor and increasing the reactivity during the operation. CONSTITUTION:The top end of a neutron moderating pipe 6 filled internally with an inert gas is closed and a communicating hole 4 for opening the bottom part is provided thereto. An internal piping 7 running through the top end and bottom end of the neutron moderating pipe is provided and a moderator is passed in this piping 7. Fins 8 for steam condensation are provided in the upper part. Double pipes or an internal pipe provided with a spray part in the upper part which is not the through-piping 7 is equally satisfactory. The inert gas is thereby compressed by cooling water and the neutron is moderated over the entire length of the fuel rod during the normal operation. The average density in the pipe is decreased during the shut-down of the reactor. The difference in the reactivity during the shut-down and the operation is thereby eliminated and, therefore, the uranium to water ratio during the operation is increased and the reactivity during the operation is improved; in addition, there are no moving parts and, therefore, the reliability is enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162676A JPS646892A (en) | 1987-06-30 | 1987-06-30 | Core internal structure of nuclear reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162676A JPS646892A (en) | 1987-06-30 | 1987-06-30 | Core internal structure of nuclear reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS646892A true JPS646892A (en) | 1989-01-11 |
Family
ID=15759173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62162676A Pending JPS646892A (en) | 1987-06-30 | 1987-06-30 | Core internal structure of nuclear reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS646892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151573A (en) * | 2008-12-25 | 2010-07-08 | Global Nuclear Fuel-Japan Co Ltd | Fuel assembly and boiling water reactor |
| JP2015500993A (en) * | 2011-12-06 | 2015-01-08 | テラパワー， エルエルシー | Reactivity control device and control method in nuclear fission reactor, nuclear fission reactor, and method for manufacturing reactivity control device |
-
1987
- 1987-06-30 JP JP62162676A patent/JPS646892A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151573A (en) * | 2008-12-25 | 2010-07-08 | Global Nuclear Fuel-Japan Co Ltd | Fuel assembly and boiling water reactor |
| JP2015500993A (en) * | 2011-12-06 | 2015-01-08 | テラパワー， エルエルシー | Reactivity control device and control method in nuclear fission reactor, nuclear fission reactor, and method for manufacturing reactivity control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3105030A (en) | Fuel element for a neutronic reactor | |
| SE8301770L (en) | ||
| JPS646892A (en) | Core internal structure of nuclear reactor | |
| SE8801432D0 (en) | FUEL CHANNEL FOR A NUCLEAR REACTOR | |
| DE3574069D1 (en) | Method of starting up a nuclear reactor, and a light-water and spectral-shift nuclear reactor for doing so | |
| US3162577A (en) | Reactor control with thorium control grid | |
| JPS6151275B2 (en) | ||
| JPS6275376A (en) | Fuel rod for nuclear reactor | |
| JPS6428587A (en) | Fuel assembly for nuclear reactor | |
| JPH02184791A (en) | High conversion and high combustion pressure tube type nuclear reactor | |
| FI80539B (en) | Method for operation of a nuclear reactor moderated and cooled by light water | |
| JPS60177293A (en) | Nuclear reactor | |
| KR100237136B1 (en) | Candu fuel bundle with a low void coefficient | |
| JPS6353490A (en) | Nuclear fuel aggregate | |
| JPS53132684A (en) | High temperature gas reactor | |
| JPS6241354B2 (en) | ||
| JPS5419088A (en) | Emergency core shutdown device of pebble bed reactor | |
| Hiraoka et al. | High Breeding/High Burnup Fast Reactor. Proposal of FP Gas Purge/Tube-in-Shell Type Metallic Fuel Fast Reactor | |
| JPS54118989A (en) | Atomic reactor main steam pipe pressure buffer | |
| JPS63200097A (en) | Nuclear reactor | |
| Metz | The Way Fast Breeders Work | |
| Fry | Nuclear energy for power generation | |
| JPS641997A (en) | Construction of core of fast breeder reactor | |
| JPS5496693A (en) | Nuclear reactor fault emergency cooling water injector | |
| JPS58132692A (en) | Heavy water moderated pressure tube type reactor |