JPS56168961A - Method and device for underwater arc cutting in nuclear reactor - Google Patents

Method and device for underwater arc cutting in nuclear reactor

Info

Publication number
JPS56168961A
JPS56168961A JP7168880A JP7168880A JPS56168961A JP S56168961 A JPS56168961 A JP S56168961A JP 7168880 A JP7168880 A JP 7168880A JP 7168880 A JP7168880 A JP 7168880A JP S56168961 A JPS56168961 A JP S56168961A
Authority
JP
Japan
Prior art keywords
water
gas
cutting
fed
cut
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.)
Granted
Application number
JP7168880A
Other languages
Japanese (ja)
Other versions
JPS5754230B2 (en
Inventor
Masanobu Hamazaki
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP7168880A priority Critical patent/JPS56168961A/en
Publication of JPS56168961A publication Critical patent/JPS56168961A/en
Publication of JPS5754230B2 publication Critical patent/JPS5754230B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Arc Welding In General (AREA)

Abstract

PURPOSE: To prevent gas from assuming radioactivity and escaping to the atmosphere at the time of under water cutting having radioactivity by capturing the decomposed gas of the water produced during consumable electrode type arc cutting which feeds only the injection water of a minimum amount of gas formation, burning the same and returning it into the water in the reactor.
CONSTITUTION: In order to cut a material M to be cut in the water W in a nuclear reactor pressure vessel V, a wire is fed from a device 17 to the torch 14 of a consumable electrode type arc cutter 1, and jet water is fed by a pump 19. At this time, no shielding gas is fed. Then, the arc is produced between the member M and the end part of a wire, the part melted by the heat thereof is blown off by the jet water, and the member M is propressively cut by the advancing of a traveler 12 and the moving of the jet water. During the cutting, the water is decomposed by the arc heat to produce H2 and O2, and bubbles G ascend. These are captured by a gas capturing part 2, and the accumulated gas is successively ignited and burned by the nozzle above the water of a condensate part 3. The produced water is cooled by being prevented from escaping to the atmosphere by the enclosing wall of a return water part 4, flows down and returns into the water.
COPYRIGHT: (C)1981,JPO&Japio
JP7168880A 1980-05-29 1980-05-29 Method and device for underwater arc cutting in nuclear reactor Granted JPS56168961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7168880A JPS56168961A (en) 1980-05-29 1980-05-29 Method and device for underwater arc cutting in nuclear reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7168880A JPS56168961A (en) 1980-05-29 1980-05-29 Method and device for underwater arc cutting in nuclear reactor

Publications (2)

Publication Number Publication Date
JPS56168961A true JPS56168961A (en) 1981-12-25
JPS5754230B2 JPS5754230B2 (en) 1982-11-17

Family

ID=13467736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7168880A Granted JPS56168961A (en) 1980-05-29 1980-05-29 Method and device for underwater arc cutting in nuclear reactor

Country Status (1)

Country Link
JP (1) JPS56168961A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173081A (en) * 1982-04-05 1983-10-11 Hitachi Ltd Method for feeding electrode wire for consumable electrode type water jet cutting
JPS58156689U (en) * 1982-04-16 1983-10-19 三菱化成ポリテック株式会社 Emergency drinking water storage tank
JPS59162495A (en) * 1983-03-07 1984-09-13 株式会社日立製作所 Cutting device for high level radioactive solid waste

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5257048A (en) * 1975-11-07 1977-05-11 Mitsubishi Heavy Ind Ltd Underwater welding torch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5257048A (en) * 1975-11-07 1977-05-11 Mitsubishi Heavy Ind Ltd Underwater welding torch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173081A (en) * 1982-04-05 1983-10-11 Hitachi Ltd Method for feeding electrode wire for consumable electrode type water jet cutting
JPS58156689U (en) * 1982-04-16 1983-10-19 三菱化成ポリテック株式会社 Emergency drinking water storage tank
JPS59162495A (en) * 1983-03-07 1984-09-13 株式会社日立製作所 Cutting device for high level radioactive solid waste

Also Published As

Publication number Publication date
JPS5754230B2 (en) 1982-11-17

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