JPS54151791A - Clad remover - Google Patents

Clad remover

Info

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
Application number
JP5991578A
Other languages
Japanese (ja)
Inventor
Masao Niwano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5991578A priority Critical patent/JPS54151791A/en
Publication of JPS54151791A publication Critical patent/JPS54151791A/en
Pending legal-status Critical Current

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
JP5991578A 1978-05-22 1978-05-22 Clad remover Pending JPS54151791A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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