GB908059A - Improvements relating to safety devices for nuclear reactors - Google Patents
Improvements relating to safety devices for nuclear reactorsInfo
- Publication number
- GB908059A GB908059A GB36100/58A GB3610058A GB908059A GB 908059 A GB908059 A GB 908059A GB 36100/58 A GB36100/58 A GB 36100/58A GB 3610058 A GB3610058 A GB 3610058A GB 908059 A GB908059 A GB 908059A
- Authority
- GB
- United Kingdom
- Prior art keywords
- balls
- plunger
- latch
- reactor
- control rod
- 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
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/115—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with latching devices and ball couplings
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
- G21C9/027—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency by fast movement of a solid, e.g. pebbles
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
908,059. Reactor control rods. REYROLLE & CO., Ltd., A. Feb. 9, 1960 [Nov. 10, 1958], No. 36100/58. Class 39 (4). [Also in Group XXV] Control rods are suspended above passages in the core of a reactor by means of latches each operated through a direct mechanical connection by an associated mechanism responsive to abnormal conditions in the reactor. Fig. 2 shows the upper end 16 of a control rod and a disengaged latch comprising a tube 14 containing a plunger 10, balls 19, and a retaining sleeve 29. When the latch is engaged the sleeve is lifted clear of the balls by a ledge 30, the balls project under a shoulder 28, and plunger 10 falls to lock the balls in position. Any rapid fall in coolant pressure in the reactor makes a bellows 5 expand, which raises plunger 10 and releases the control rod from the latch. Fig. 5 shows a latch comprising a tube 31, a plunger 33, balls 42 and levers 45 carrying more balls in a cage; the latter balls engage a slot in the control rod wall. Lifting of the plunger allows the levers to move inward, the balls rolling on surfaces 50 and 52.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36100/58A GB908059A (en) | 1958-11-10 | 1958-11-10 | Improvements relating to safety devices for nuclear reactors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36100/58A GB908059A (en) | 1958-11-10 | 1958-11-10 | Improvements relating to safety devices for nuclear reactors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB908059A true GB908059A (en) | 1962-10-10 |
Family
ID=10384961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36100/58A Expired GB908059A (en) | 1958-11-10 | 1958-11-10 | Improvements relating to safety devices for nuclear reactors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB908059A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402281A1 (en) * | 1977-08-30 | 1979-03-30 | Combustion Eng | DEVICE INTENDED TO TRIGGER AN EMERGENCY STOP MECHANISM IN A NUCLEAR REACTOR |
US4187145A (en) * | 1977-07-25 | 1980-02-05 | Combustion Engineering, Inc. | Hydraulic latch scram release mechanism |
US4459931A (en) * | 1978-10-07 | 1984-07-17 | Fmc Corporation | Method and apparatus for tension setting and compression releasing tubular connectors |
US4734252A (en) * | 1986-08-07 | 1988-03-29 | The United States Of America As Represented By The United States Department Of Energy | Nuclear reactor shutdown control rod assembly |
US4759903A (en) * | 1985-11-28 | 1988-07-26 | Commissariat A L'energie Atomique | Apparatus for automatically starting the drop of an absorbing member into a nuclear reactor core |
-
1958
- 1958-11-10 GB GB36100/58A patent/GB908059A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4187145A (en) * | 1977-07-25 | 1980-02-05 | Combustion Engineering, Inc. | Hydraulic latch scram release mechanism |
FR2402281A1 (en) * | 1977-08-30 | 1979-03-30 | Combustion Eng | DEVICE INTENDED TO TRIGGER AN EMERGENCY STOP MECHANISM IN A NUCLEAR REACTOR |
US4167443A (en) * | 1977-08-30 | 1979-09-11 | Combustion Engineering, Inc. | Self-actuated rate of change of pressure scram device for nuclear reactors |
US4459931A (en) * | 1978-10-07 | 1984-07-17 | Fmc Corporation | Method and apparatus for tension setting and compression releasing tubular connectors |
US4759903A (en) * | 1985-11-28 | 1988-07-26 | Commissariat A L'energie Atomique | Apparatus for automatically starting the drop of an absorbing member into a nuclear reactor core |
US4734252A (en) * | 1986-08-07 | 1988-03-29 | The United States Of America As Represented By The United States Department Of Energy | Nuclear reactor shutdown control rod assembly |
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