摘要:
This invention is provided for improvement of corrosion-resistant property of a crucible and for promotion of safety in a pyrochemical reprocessing method for the spent nuclear fuel. The spent nuclear fuel is dissolved in a molten salt placed in the crucible. In a pyrochemical reprocessing method, the nuclear fuel is deposited, and the crucible (2) is heated by induction heating. Cooling media (5, 6) are supplied to cool down, and a molten salt layer (7) is maintained by keeping balance between the heating and the cooling, and a solidified salt layer (8) is formed on inner wall surface of the crucible.
摘要:
This invention is provided for improvement of corrosion-resistant property of a crucible and for promotion of safety in a pyrochemical reprocessing method for the spent nuclear fuel. The spent nuclear fuel is dissolved in a molten salt placed in the crucible. In a pyrochemical reprocessing method, the nuclear fuel is deposited, and the crucible (2) is heated by induction heating. Cooling media (5, 6) are supplied to cool down, and a molten salt layer (7) is maintained by keeping balance between the heating and the cooling, and a solidified salt layer (8) is formed on inner wall surface of the crucible.
摘要:
This invention is provided for improvement of corrosion-resistant property of a crucible and for promotion of safety in a pyrochemical reprocessing method for the spent nuclear fuel. The spent nuclear fuel is dissolved in a molten salt placed in the crucible. In a pyrochemical reprocessing method, the nuclear fuel is deposited, and the crucible (2) is heated by induction heating. Cooling media (5, 6) are supplied to cool down, and a molten salt layer (7) is maintained by keeping balance between the heating and the cooling, and a solidified salt layer (8) is formed on inner wall surface of the crucible.
摘要:
This invention provides a heat treatment apparatus for an oxide superconducting wire that is easy to control atmosphere during baking and can realize a high manufacturing speed. A heat treatment apparatus (1) comprises a heat treating furnace (4) and a cylindrical rotator (5), rotatable about a horizontal rotating axis, provided within the heat treating furnace (4). The rotator (5) in its cylindrical body (5a) have a number of through-holes (5b) formed evenly over the whole surface of the cylindrical body (5a). One end of the cylindrical body (5a) is hermetically sealed by a lid. On the other end, a gas discharge pipe (7) for discharging gas within the cylindrical body to the outside of the heat treating furnace (4) is connected to the lid. A plurality of gas supply pipes (8) are symmetrically provided separately from each other on the outer surface of the cylindrical body (5a). A number of gas jet holes are formed in each of the gas supply pipe (8) so as to jet atmosphere gas toward the surface of the cylindrical body. A tape-shaped wire (6) formed of a precursor film of a YBCO superconducting layer is wound around the rotator (5) for heat treatment for superconductor formation.
摘要:
A floating type air bag device able to prevent backlash of a module cover and easily position the module cover with respect to a steering wheel without dispersion and a sacrifice of an operation feeling of horn sounding is provided. The air bag device has a retainer (10) to which an inflator and a folded air bag are attached, the retainer (10) being fixed to a steering wheel armature (60) and having a plurality of hooks (13) formed in a side wall portion thereof (12); a module cover (20) in which the module cover covers the air bag and the hook (13) is engaged with an opening (22b) of a leg piece portion (22) projected from a rear side and the module cover (20) can be vertically moved with respect to the retainer (10); a horn plate (30) attached along a circumferential edge of the module cover (20); a contact plate (40) attached to an extending-out portion (11) of the retainer (10) or the horn plate (30); and a horn spring (50) arranged between the horn plate (30) and the retainer (10); wherein a first position regulation section (pin) (11d) of the retainer (10) to the steering wheel (60) is received by a resin coating portion (62) of the steering wheel armature, and is placed below a second position regulation section (C) formed by the opening (21a) of the leg piece portion (21) of the module cover (20) and a pawl (11c) extended in the retainer (10).
摘要:
A tape-shaped oxide superconductor includes a 15 to 100 nm-thick Ce—Gd—O-based oxide layer (Ce:Gd=40:60 to 70:30 molar ratio) and a 100 nm-thick Ce—Zr—O-based oxide layer (Ce:Zr=50:50 molar ratio) as first and second intermediate layers are formed by MOD on an Ni-base alloy substrate having a half value width (FWHM:Δφ) of 6.5 degrees. A 150 nm-thick CeO2 oxide layer as a third intermediate layer is formed on the second intermediate layer by RF sputtering. A 1 μm-thick YBCO superconducting layer is formed by TFA-MOD on the three-layer structure. In the tape-shaped oxide superconductor, the Δφ values of the first to third intermediate layers are (6.0 to 6.5) degrees, (6.0 to 6.6) degrees, and (6.0 to 6.6) degrees, respectively, and the Jc value of the YBCO superconducting layer in liquid nitrogen is 1.8 to 2.2 MA/cm2.
摘要:
This invention provides a heat treatment apparatus for an oxide superconducting wire that is easy to control atmosphere during baking and can realize a high manufacturing speed. A heat treatment apparatus (1) comprises a heat treating furnace (4) and a cylindrical rotator (5), rotatable about a horizontal rotating axis, provided within the heat treating furnace (4). The rotator (5) in its cylindrical body (5a) have a number of through-holes (5b) formed evenly over the whole surface of the cylindrical body (5a). One end of the cylindrical body (5a) is hermetically sealed by a lid. On the other end, a gas discharge pipe (7) for discharging gas within the cylindrical body to the outside of the heat treating furnace (4) is connected to the lid. A plurality of gas supply pipes (8) are symmetrically provided separately from each other on the outer surface of the cylindrical body (5a). A number of gas jet holes are formed in each of the gas supply pipe (8) so as to jet atmosphere gas toward the surface of the cylindrical body. A tape-shaped wire (6) formed of a precursor film of a YBCO superconducting layer is wound around the rotator (5) for heat treatment for superconductor formation.
摘要:
A decladding device of spent nuclear fuel easily and efficiently removes fuel pins from the spent nuclear fuel. Spent nuclear fuel pins P, made of austenitic stainless steel, and in which the spent nuclear fuel is filled, are fed by a feeder 7 one by one or by a unit of several pins and finely sheared into fragments by a shredder 1 having plural rotating blades 4, 5 so that fragments are of a size of 1 to 2 mm or less. The sheared fragments are separated into a fuel pin portion and a nuclear fuel portion by a magnetic separator 20. The magnetic separator 20 comprises a vibration feeder 27 feeding the sheared fragments and is arranged below the shredder 1. Without using a dissolving liquid of nitric acid, decladding is done and the spent nuclear fuel can be efficiently obtained.
摘要:
Disclosed are an oxide superconductor tape and a method of manufacturing the oxide superconductor tape capable of improving the length and characteristics of superconductor tape and obtaining stabilized characteristics across the entire length thereof. A Y-class superconductor tape (10), as an oxide superconductor tape, comprises a tape (13) further comprising a tape-shaped non-oriented metallic substrate (11), and a first buffer layer (sheet layer) (12) that is formed by IBAD upon the tape-shaped non-oriented metallic substrate (11); and a second buffer layer (gap layer) (14), further comprising a lateral face portion (14a) that is extended to the lateral faces of the first buffer layer (sheet layer) (12) upon the tape (13) by RTR RF-magnetron sputtering.
摘要:
An air bag device includes a retainer to which an inflator and a folded air bag are attached. The retainer is fixed to a steering wheel armature and has a plurality of hooks formed in a side wall portion thereof. A module cover covers the air bag and each hook of the plurality of hooks is engaged with an opening of a leg piece portion projected from a rear side. The module cover can be vertically moved with respect to the retainer. A horn plate has a plurality of contacts attached along a circumferential edge of the module cover and moved integrally with the module cover at a horn operating time. A contact plate is attached to the retainer. A horn spring is arranged between the horn plate and the retainer. The contact plate includes a clip portion fastened to the retainer and a leaf spring portion abutting against one of the contacts of the horn plate at the horn operating time.