Fundamental underwater cutting method experiment as a dismantling tool for a commercial atomic reactor vessel
A new underwater cutting technique applying underwater dismantling to commercial atomic reactor vessels has been developed. This technique involves gas cutting the mild steel underwater after removing the stainless steel cladding by arc gouging. The arc gouging is achieved by blowing out metal--which is melted by an arc between a mild steel electrode wire and the stainless steel--by jetting water from a rear water nozzle. The fuel gas employed for preheating for the gas cutting was a mixed gas of propane and 30% methylacetylene. The test piece used was made of 300-mm-thick mild steel with 8-mm-thick stainless steel cladding. The fundamental cutting experiment was carried out successfully under a cutting speed condition of 15 cm/min at a water depth of 20 cm. This apparatus is easy to handle, compact, and cheap.
- Research Organization:
- Government Industrial Research Institute Sikoku, Machinery and Metal Department, 2-3-3, Hananomiya-cho Takamatu-si
- OSTI ID:
- 5912860
- Journal Information:
- Nucl. Technol.; (United States), Vol. 59:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
POWER REACTORS
REACTOR DISMANTLING
REACTOR VESSELS
UNDERWATER OPERATIONS
SUBMERGED ARC WELDING
ACETYLENE
FUEL GAS
FUEL-CLADDING INTERACTIONS
MECHANICAL DECLADDING
METHYL RADICALS
PROPANE
STAINLESS STEELS
TESTING
THICKNESS
WELDING MACHINES
ALKANES
ALKYL RADICALS
ALKYNES
ALLOYS
ARC WELDING
CHROMIUM ALLOYS
CONTAINERS
CORROSION RESISTANT ALLOYS
DECLADDING
DEMOLITION
DIMENSIONS
FABRICATION
FLUIDS
FUELS
GAS FUELS
GASES
HEAD END PROCESSES
HYDROCARBONS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
ORGANIC COMPOUNDS
RADICALS
REACTORS
STEELS
WELDING
220200* - Nuclear Reactor Technology- Components & Accessories
423000 - Engineering- Marine Engineering- (1980-)