JPS54151791A - Clad remover - Google Patents
Clad removerInfo
- Publication number
- JPS54151791A JPS54151791A JP5991578A JP5991578A JPS54151791A JP S54151791 A JPS54151791 A JP S54151791A JP 5991578 A JP5991578 A JP 5991578A JP 5991578 A JP5991578 A JP 5991578A JP S54151791 A JPS54151791 A JP S54151791A
- Authority
- JP
- Japan
- Prior art keywords
- clad
- pressure vessel
- reactor water
- pump
- pipe
- 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
-
- 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
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
PURPOSE: To reduce the quantity of radiation in a pressure vessel and the exposure of an operator, by coupling a clad remover in parallel with a pipe connected through valves to the discharge sides of two recirculation loops coupled to the pressure vessel.
CONSTITUTION: When a nuclear reactor is stopped, pump discharge valves 19, 19' are closed and valves 16, 17 are opened and one of recirculation pumps 3, 3' is run. Reactor water 5 from the pump 3 passes through a pipe 15 and flows in reverse through through the other recirculation pump 3' and a pipe 2'. The reactor water 5 then flows into a downcomer 12' through a pressure vessel nozzle 13' so that clad deposited on the inside of downcomers 14, 14' is buoyed up and conducted in to the moving pump 3 together with the reactor water. The mixture of the reactor water with the clad then flows toward the pipe 15. The clad is conducted together with the reactor water to a clad remover 6. The reactor water removed of the clad is returned to the pressure vessel 1 or discharged from the circuration system. When the unclear reactor is in operation, a jet at the maximum speed of 1.5 m/sec can be caused from the pressure vessel nozzle 13 to the downcomer 14' to effectively buoy up and discharge the deposited clad.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5991578A JPS54151791A (en) | 1978-05-22 | 1978-05-22 | Clad remover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5991578A JPS54151791A (en) | 1978-05-22 | 1978-05-22 | Clad remover |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54151791A true JPS54151791A (en) | 1979-11-29 |
Family
ID=13126893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5991578A Pending JPS54151791A (en) | 1978-05-22 | 1978-05-22 | Clad remover |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54151791A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4534932A (en) * | 1983-06-03 | 1985-08-13 | Hitachi, Ltd | Apparatus for removing cladding material from bottom portion of control rod guide tube of nuclear reactor |
-
1978
- 1978-05-22 JP JP5991578A patent/JPS54151791A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4534932A (en) * | 1983-06-03 | 1985-08-13 | Hitachi, Ltd | Apparatus for removing cladding material from bottom portion of control rod guide tube of nuclear reactor |
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