KR20190025150A - Fixture for processing plate nuclear fuel assembly and processing of plate nuclear fuel assembly using the same - Google Patents

Abstract

The present invention provides a fixture for processing a plate-type nuclear fuel assembly, which has a plurality of plate-type nuclear fuels arranged in parallel and includes hollow protrusion portions formed on both ends thereof in order to process a plate-type nuclear fuel assembly. The fixture for processing a plate-type nuclear fuel assembly includes outer surfaces corresponding to inner surfaces surrounding the protrusion portions, and has a lifting portion provided on at least one of the outer surfaces and capable of being lifted in order to be in contact with corresponding inner surfaces of the protrusion portions when inserted into the protrusion portions. When the fixture for processing a plate-type nuclear fuel assembly is employed, micro vibrations that occur in the MCT machining of the plate-type nuclear fuel assembly can be minimized, thereby machining a surface to be processed to be smooth. The plate-type nuclear fuel assembly is hollow and has the length ten times greater than or equal to the width thereof such that vibrations occur in the MCT machining. The vibrations can be minimized by inserting the fixture into the hollow protrusion portions on both sides of the plate-type nuclear fuel assembly. In addition, the fixture has the lifting portion, which can be lifted, on at least one surface thereof to be inserted according to the size of the plate-type nuclear fuel assembly.

Description

TECHNICAL FIELD The present invention relates to a fixture for processing a plate fuel assembly and a method of processing the plate fuel assembly using the plate fixture,

The present invention is intended to provide a fixture for processing a plate-shaped fuel assembly and a method for processing the plate-shaped fuel assembly using the fixture.

Nuclear fuel is a substance necessary for drawing nuclear energy, and it has high energy density and generates a lot of energy. The reactor is a device that uses the thermal energy generated from the fission to control the chain reaction so that a large amount of mass defect energy is released instantaneously as a result of the nuclear fission of such nuclear fuel.

These reactors are divided into power generation reactors (power generation furnaces) and research reactors (research furnaces). Commercial nuclear power plants use heat generated by nuclear fission and neutrons in the form of electricity, while research uses only neutrons instead of blowing heat .

Among them, researches are neutrons generated by nuclear reactors or γ-rays, which are used to conduct various researches. The neutron experiments, neutron physics, neutron ray diffraction, nuclear properties of various reactor materials, It is used in various studies requiring strong neutron sources (or gamma-ray sources).

About half of the current reactors are research reactors, and the types are natural uranium-graphite, natural uranium-heavy water, enriched uranium-heavy water, swimming pools,

On the other hand, there are two kinds of nuclear fuel that are mainly used in the nuclear industry, uranium dioxide and metal uranium. Prior to commercial use, uranium dioxide was mainly formed into pellets, which were then packed into cladding to form a nuclear fuel assembly. Uranium dioxide is used as fuel for many commercial nuclear power plants because it has a high melting point, no phase transformation to the melting point, and can be used at a high output density. The fuel of uranium dioxide is processed in the form of pellets, and a plurality of pellets are stacked and inserted into the cladding of zirconium alloy or stainless steel to form fuel rods. The fuel rods are placed in a lattice of various shapes (square lattice, hexagonal lattice, And assembled into a nuclear fuel assembly.

On the other hand, in addition to nuclear fuel of commercial nuclear power plants, thin film, thin plate, plate or plate type fuel using uranium metal (alloy) fuel is being used. Metal fuel has a very good thermal conductivity, but has a low melting point and a phase transformation at a relatively low temperature, so that the output density can not be increased. In order to overcome this disadvantage, the metal fuel is processed into a thin film, thin plate, plate or plate shape which can greatly improve the heat transfer performance. In general, an aluminum alloy which is easy to form is used as the covering material.

Korean Patent No. 10-1535480 discloses a planar nuclear fuel assembly and a nuclear power plant having the nuclear fuel assembly. The nuclear fuel assembly includes a plurality of nuclear fuel parts arranged in a plate form and spaced apart from each other. To protect the nuclear fuel part, And a plurality of micro flow paths for the coolant which is disposed between the nuclear fuel parts and flows around the nuclear fuel part, wherein the plurality of micro flow paths are formed between the nuclear fuel part and the cover part, And a flow path channel portion formed to support at least a part of the cover portion so as to prevent deformation of the cover portion.

In addition, Korean Patent No. 10-1746146 discloses a patent developed by the inventors of the present invention. In the swaging process, each plate-shaped fuel is easily fixed to the precise position of the groove formed in the side plate of the fuel assembly without making a separate jig A stopper system for a swaging process is disclosed.

However, in the case of the planar fuel assembly manufactured using the stopper system for swaging process, a fixing plate for fixing the side plate is required for commercialization, and a machining center (MCT) for machining a non- tooling system processing must be accompanied.

In this case, since the length of the plate-like fuel assembly is 10 times longer than the width and the inside is vacant, there is a difficulty that the machined surface becomes smooth due to the minute vibration generated in the MCT processing. The present inventors have completed the present invention by developing a fixture for processing a plate fuel assembly.

It is an object of the present invention to provide a fixture for processing a plate-shaped fuel assembly and a method of processing the plate-shaped fuel assembly using the fixture.

In order to achieve the above object,

A plurality of plate-like nuclear fuel materials are arranged and arranged in parallel,

And includes projections at both ends that are hollow inside

A fixture for processing a plate fuel assembly for processing a plate fuel assembly,

And outer surfaces corresponding to inner surfaces surrounding the protrusions,

On at least one of the outer surfaces,

And a lifting portion capable of being lifted to be in contact with the inner surface of the protrusion corresponding to the insertion of the protrusion when the protrusion is inserted.

A fixture for processing a plate fuel assembly is provided.

In addition,

(Step 1) of inserting a fixture for processing a bundle of fuel assemblies into protrusions having hollows at both ends of the bundle of plate fuel assemblies to contact at least one of the inner surfaces of the protrusions with the outer surface of the fixture;

Lifting the lifting plate provided on the outer surface of the fixing member not in contact with the inner surface of the protrusion using a lifting unit to contact the inner surface of the protrusion to fasten the fixing member to the inner surface of the protrusion (step 2);

Fixing the plate-shaped nuclear fuel assemblies fastened to the fixture to a vise of a machining center tooling system (MCT) and performing MCT processing (step 3); And

Separating the planar fuel assemblies subjected to the MCT process from the vise and detaching the fixture (step 4);

Containing

A method of processing a planar fuel assembly is provided.

When the fixture for machining a plate fuel assembly according to the present invention is employed, it is possible to minimize the minute vibrations generated during the MCT machining of the plate fuel assembly, thereby smoothly processing the machined surface. Since the plate-shaped fuel assemblies are 10 times longer than the width and vacant inside, vibration occurs during the MCT processing. By inserting the fixtures into protrusions having hollow portions inside the both sides of the plate fuel assemblies, The vibration can be minimized. In addition, the fixture has a lifting part that can be lifted at least on one side, so that the fixture can be inserted to fit the size of the plate fuel assembly.

1 is a schematic view showing a fixture for processing a planar fuel assembly according to the present invention,
FIG. 2 is a schematic view showing a cross section of a fixture for processing a planar fuel assembly according to the present invention,
3 is a photograph showing a fixture for processing a planar fuel assembly according to the present invention,
FIG. 4 is a photograph showing a lifting unit of a fastener for processing a sheet-like nuclear fuel assembly according to the present invention,
FIG. 5 is a schematic view showing a plate-like fuel assembly and a fixture for processing a plate-shaped fuel assembly according to the present invention,
6 is a schematic view illustrating a process of fastening a plate fuel assembly and a plate-type fuel assembly fastener according to the present invention.

The present invention

A plurality of plate-like nuclear fuel materials 210 are arranged in parallel,

And includes projections at both ends that are hollow inside

As a fixture 101 for processing a plate-like fuel assembly 101 for processing the plate-like fuel assembly 201,

And outer surfaces corresponding to inner surfaces surrounding the protrusions,

On at least one of the outer surfaces,

And a lifting portion capable of being lifted to be in contact with the inner surface of the protrusion corresponding to the insertion of the protrusion when the protrusion is inserted.

A fixture (101) for processing a plate fuel assembly is provided.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fixture 101 for processing a planar fuel assembly according to the present invention will be described in detail with reference to the drawings.

First, FIG. 1 is a schematic view showing a fastener 101 for processing a plate-like fuel assembly, and FIG. 2 is a schematic view showing a cross section of the fastener.

Referring to FIGS. 1 and 2, the plate type fuel assembly fixing fixture 101 includes a lifting unit including a body, a lifting plate 110, and lifting means 120.

The body of the plate-like nuclear fuel assembly fixing fixture 101 refers to all parts except the lifting parts in FIGS. 1 and 2, and the material of the body is not limited to any material, but preferably AA6061- T6. ≪ / RTI >

Since the fastener is supported by the surface of the lifting plate rather than being directly fastened to mechanical elements such as a plate fuel assembly and a bolt as described below, the material of the fastener body is not limited.

1 and 2 show the fixture 101 in the form of a quadrangular prism (hexahedron), but the fixture 101 is not limited as long as it is in the form of a polyhedron. For example, a triangular prism, a square prism, Or in the form of hexagonal pillars, but are not limited thereto. However, as will be described later, the shape of the projecting portion of the plate fuel assembly 201 should be the same.

The length of each side of the fixture 101 is not limited, but should be shorter than the length of each side of the inner surface of the projecting portion which is empty at both ends of the plate-like fuel assembly 201.

The lifting unit may include a lifting plate 110 and lifting means 120 and the lifting plate 110 may be lifted through the lifting means 120 to contact the inner surface of the protrusion of the plate fuel assembly.

At this time, the material of the lifting plate 110 is not limited to any material such as the body of the fixing member, but may be a material made of AA6061-T6.

The lifting means 120 is not limited as long as it is connected to the lifting plate 110 and lifting the lifting plate 110. For example, in FIGS. 1 and 2, when bolts are tightened using bolts, As shown in Fig. However, the method of lifting the lifting plate 110, such as lifting the lifting plate 110 by turning the knob or lifting the lifting plate 110 by using the spring, .

Referring to FIGS. 3 and 4, the lifting plate 110 is lifted along the taper and the bolt is lifted by tightening the lifting means 120, that is, the bolt, (Fig. 4A shows the lifting plate 110 in the lifted state and Fig. 4B shows the lifting plate 110 in the lifted state). However, the above description is only one example for illustrating the lifting means, and may include any means by which the lifting plate 110 can be lifted.

Further, a groove or a handle may be formed on one side of the body of the fixture 101, but the present invention is not limited thereto.

1, 3, and 6, grooves are formed on one side of the body of the fixture 101. However, there is no limitation on the shape of the fixture 101 that can be held by hand for moving the fixture 101, For example, a handle may be formed.

On the other hand, the plate-like fuel assembly 201

A plurality of plate type nuclear fuel 210;

Two side plates (230) for fixing opposing corners of the plurality of plate fuel elements (210) respectively; And

Four fixing plates 220 for fixing and connecting the two side plates 230;

/ RTI >

The two side plates 230 protrude in the longitudinal direction of the plate fuel toward the plurality of plate fuel 210,

The fixing plate 220 may be formed so as to be in contact with the protruding portion of the side plate 230 in the vertical direction to form a protruding portion having an inner space.

Hereinafter, with reference to FIG. 5, the fastening relationship between the fixture 101 for processing a plate-shaped fuel assembly and the plate-like fuel assembly 201 according to the present invention will be described in detail.

The plate fuel assemblies 201 may include a plurality of plate fuel assemblies 210, two side plates 230 and four stationary plates 220. The plurality of plate fuel assemblies 201 may be parallel They may be aligned and arranged.

More specifically, the plate-like fuel assembly 201 includes two side plates 230 having grooves formed on one surface thereof, a plurality of plate-like fuel materials 210 having both ends fixed to the left and right ends of the grooves, and a plurality of plate- And four fixing plates 220 fixed to the side plates 230 in a direction perpendicular to the side plates 230. As shown in FIG.

At this time, the plurality of plate-like nuclear fuel 210 may include nuclear fuel including uranium and Al-5Si powder, and the side plate 230 and the fixing plate 220 of AA6061-T6 material may be used.

For example, the plate-shaped fuel assemblies were prepared by twenty-one plate fuel 210 prepared by mixing aluminum powder dried in a vacuum furnace for 2 hours with uranium powder at 23 RPM for 3 hours using a mixer, Type fuel assemblies assembled by being fixed to the side plate 230 made of AA6061-T6 using a stopper system.

The process of assembling the plate fuel assemblies using the swaging equipment and the stopper system is disclosed in Korean Patent No. 10-1746146, and a detailed description thereof will be omitted.

However, in the present invention, the plate-like fuel assembly 201 disclosed in Korean Patent No. 10-1746146 has a structure including only a plurality of plate fuel 210 and two side plates 230, The assembly further includes four stationary plates (220).

As described above, the four fixing plates 220 are fixed while connecting two side plates 230 protruding from the plurality of plate type fuel 210, and are formed in a direction perpendicular to the side plates 230 Can be.

At this time, the fixing plate 220 may be in contact with the side plate 230 by welding or the like, and any method that can be used in addition to the welding may be used without limitation.

In addition, the plate-like fuel assemblies 201 may be formed with protrusions which are hollow at both ends by being vertically connected to the two side plates 230 protruding from the fixing plate 220.

The fixture 101 for machining a plate-shaped fuel assembly according to the present invention may be inserted into the projecting portion to smooth the surface of the plate-like fuel assembly 201 by minimizing vibration during MCT processing.

Meanwhile, the MCT machining may be performed to process an uneven cross section generated when the fixing plate 220 is joined to the side plate 230.

6 is a view showing a structure in which the fixture 101 for processing a plate-like nuclear fuel is inserted into the plate-like fuel assembly 201. At least one of the outer surfaces of the plate- (Not shown).

A surface of the outer surface of the fixture 101 that does not contact the inner surface of the protrusion may include a lifting portion and the lifting plate 110 may be lifted through the lifting means 120 to contact the inner surface of the protrusion .

Therefore, when the lifting portion is lifted, all the outer surfaces of the fixing member 101 may be in contact with all the inner surfaces of the protrusions.

That is, since the fixture 101 includes the lifting portion, the fixture 101 can be tightened according to the size of the projecting portion of the plate fuel assembly 201 and can be utilized with high efficiency. The fixture 101 has a structure in contact with all the inner surfaces of the projections, It may be to suppress vibration and smooth the surface to be machined.

In addition,

Inserting a plate-like fuel assembly finishing fixture 101 into a protruding portion where both ends of the plate-like fuel assembly 201 are hollow and contacting the outer surface of the fixture 101 to at least one of the inner surfaces of the projecting portion Step 1);

Lifting the lifting plate provided on the outer surface of the fixing member 101 that is not in contact with the inner surface of the protrusion by using a lifting member to contact the inner surface of the protrusion to fasten the fixing member 101 to the inner surface of the protrusion Step 2);

Fixing the plate-like fuel assembly 201 fastened to the fixture 101 to a vise of an MCT (machining center tooling system) and performing MCT machining (step 3); And

Separating the plate fuel assembly 201 subjected to the MCT processing from the vise and detaching the fixture 101 (step 4);

Containing

A method of processing a plate fuel assembly (201) is provided.

Hereinafter, a method of processing the plate-like fuel assembly 201 according to the present invention will be described step by step.

First, in step 1, a plate-like fuel assembly finishing fixture 101 is inserted into a protruding portion where both ends of the plate-shaped fuel assembly 201 are hollow, so that the outer surface of the fixture 101 is fixed on at least one of the inner surfaces of the projections .

Referring first to FIGS. 1 and 2, the plate-type fuel assembly processing fixture 101 includes a lifting portion including a body, a lifting plate 110, and a lifting means 120.

The body of the plate-like nuclear fuel assembly fixing fixture 101 refers to all parts except the lifting parts in FIGS. 1 and 2, and the material of the body is not limited to any material, but preferably AA6061- T6. ≪ / RTI >

Since the fastener is supported directly on the surface of the lifting plate rather than being directly fastened to a mechanical element such as a plate fuel assembly and a bolt, the material of the fastener body is not limited.

1 and 2 show the fixture 101 in the form of a quadrangular prism (hexahedron), but the fixture 101 is not limited as long as it is in the form of a polyhedron. For example, a triangular prism, a square prism, Or in the form of hexagonal pillars, but are not limited thereto. However, the shape of the protrusion of the plate fuel assembly 201 should be the same.

Although the length of each side of the fixture 101 is not limited, it should be shorter than the inner surface of the protruding portion at both ends of the plate fuel assembly 201.

The lifting unit may include a lifting plate 110 and lifting means 120 and the lifting plate 110 may be lifted through the lifting means 120 to contact the inner surface of the protrusion of the plate fuel assembly.

At this time, the material of the lifting plate 110 is not limited to any material such as the body of the fixing member, but may be a material made of AA6061-T6.

On the other hand, the plate-like fuel assembly 201

A plurality of plate type nuclear fuel 210;

Two side plates (230) for fixing opposing corners of the plurality of plate fuel elements (210) respectively; And

Four fixing plates 220 for fixing and connecting the two side plates 230;

/ RTI >

The two side plates 230 protrude in the longitudinal direction of the plate fuel toward the plurality of plate fuel 210,

The fixing plate 220 may be formed so as to be in contact with the protruding portion of the side plate 230 in the vertical direction to form a protruding portion having an inner space.

The plate fuel assemblies 201 may include a plurality of plate fuel assemblies 210, two side plates 230 and four stationary plates 220. The plurality of plate fuel assemblies 201 may be parallel They may be aligned and arranged.

More specifically, the plate-like fuel assembly 201 includes two side plates 230 having grooves formed on one surface thereof, a plurality of plate-like fuel materials 210 having both ends fixed to the left and right ends of the grooves, and a plurality of plate- And four fixing plates 220 fixed to the side plates 230 in a direction perpendicular to the side plates 230. As shown in FIG.

At this time, the plurality of plate-like nuclear fuel 210 may include nuclear fuel including uranium and Al-5Si powder, and the side plate 230 and the fixing plate 220 of AA6061-T6 material may be used.

For example, the plate-shaped fuel assemblies were prepared by twenty-one plate fuel 210 prepared by mixing aluminum powder dried in a vacuum furnace for 2 hours with uranium powder at 23 RPM for 3 hours using a mixer, Type fuel assemblies assembled by being fixed to the side plate 230 made of AA6061-T6 using a stopper system.

The process of assembling the plate fuel assemblies using the swaging equipment and the stopper system is disclosed in Korean Patent No. 10-1746146, and a detailed description thereof will be omitted.

However, in the present invention, the plate-like fuel assembly 201 disclosed in Korean Patent No. 10-1746146 has a structure including only a plurality of plate fuel 210 and two side plates 230, The assembly further includes four stationary plates (220).

As described above, the four fixing plates 220 are fixed while connecting two side plates 230 protruding from the plurality of plate type fuel 210, and are formed in a direction perpendicular to the side plates 230 Can be.

At this time, the fixing plate 220 may be in contact with the side plate 230 by welding or the like, and any method that can be used in addition to the welding may be used without limitation.

In addition, the plate-like fuel assemblies 201 may be formed with protrusions which are hollow at both ends by being vertically connected to the two side plates 230 protruding from the fixing plate 220.

The fixture 101 for machining a plate-shaped fuel assembly according to the present invention may be inserted into the projecting portion to smooth the surface of the plate-like fuel assembly 201 by minimizing vibration during MCT processing.

Meanwhile, the MCT machining may be performed to process an uneven cross section generated when the fixing plate 220 is joined to the side plate 230.

Next, step 2 is a step of lifting the lifting plate provided on the outer surface of the fixing member, which is not in contact with the inner surface of the protrusion, by using the lifting unit and bringing the fixing member into contact with the inner surface of the protrusion to fasten the fixing member to the inner surface of the protrusion .

6 is a view illustrating a structure in which the fixture 101 for plate-type fuel processing is inserted into the plate-like fuel assembly 201. At least one of the outer surfaces of the plate- Of the fuel assembly (201) is in contact with the inner surface of the protrusion of the plate fuel assembly (201).

The surface of the fixture 101 that is not in contact with the inner surface of the protrusion may include a lifting portion and the lifting plate 110 is lifted through the lifting means 120 so that the inner surface of the protrusion .

The lifting means 120 is not limited as long as it is connected to the lifting plate 110 and lifting the lifting plate 110. For example, in FIGS. 1 and 2, when bolts are tightened using bolts, As shown in Fig. However, the method of lifting the lifting plate 110, such as lifting the lifting plate 110 by turning the knob or lifting the lifting plate 110 by using the spring, .

Accordingly, when the lifting portion is lifted, all the outer surfaces of the fixing member 101 can be brought into contact with all the inner surfaces of the protrusions.

That is, since the fixture 101 includes the lifting portion, the fixture 101 can be tightened according to the size of the projecting portion of the plate fuel assembly 201 and can be utilized with high efficiency. The fixture 101 has a structure in contact with all the inner surfaces of the projections, It may be to suppress vibration and smooth the surface to be machined.

Step 3 is a step of fixing the plate-like fuel assembly 201 fastened to the fixture 101 to a vise of an MCT (machining center tooling system) and performing MCT processing.

The MCT machining is a known technique and is used in a curved surface or a planar machining, and is a technique used for a planar cutting, a curved cutting, a die machining, and the like.

In the present invention, the MCT machining may be performed to process an uneven cross section generated when the fixing plate 220 is joined to the side plate 230. Specifically, the objective is to remove the beads at the joining portion of the fixing plate 220 and the side plate 230 with the electron beam through the MCT process, and to process the final bead dimension. The above processing is roughly performed by roughing and finishing. First, four sides of the plate fuel assembly are roughly machined by roughing (3,000 rpm, 800 mm / min) using a face mill cutter. After that, precision machining and aggregate ID can be carried out with end mill finishing (6,000 rpm, 600 mm / min).

If the MCT process is performed without the fixture 101, the length of the plate-like fuel assembly 201 is longer than the width of the plate-like fuel assembly 201 by at least 10 times, Since the inside is empty, the machined surface may become smooth due to a slight vibration. However, by inserting the fixture 101 into the projection and fastening it to the inner surface, the vibration can be suppressed, and the surface to be processed can be smoothed.

The fixture 101 for processing the plate-like fuel assembly may have a groove or a handle on one side thereof. Therefore, when the plate-like fuel assembly 201 fastened to the fixture 101 of the step 3 is fixed to the vise of the MCT, The plate type fuel assembly 201 fastened to the fixture 101 may be moved by a vice using a groove or a handle.

Next, Step 4 is a step of separating the plate-like fuel assembly 201 subjected to the MCT processing from the vise and detaching the fixture 101.

The MCF-processed plate fuel assembly 201 can be used as a nuclear fuel by separating it from the vise and fixture 101.

101: Fixing plate for nuclear fuel processing
110: Lifting plate
120: lifting means
201: plate fuel assembly
210: plate fuel
220: Fixing plate
230: side plate

Claims (9)

A plurality of plate-like nuclear fuel materials are arranged and arranged in parallel,
And includes projections at both ends that are hollow inside
A fixture for processing a plate fuel assembly for processing a plate fuel assembly,
And outer surfaces corresponding to inner surfaces surrounding the protrusions,
On at least one of the outer surfaces,
And a lifting portion capable of being lifted to be in contact with the inner surface of the protrusion corresponding to the insertion of the protrusion when the protrusion is inserted.
Fixtures for processing flat fuel assemblies.
The method according to claim 1,
The plate fuel assembly
A plurality of plate type nuclear fuel;
Two side plates each fixing opposing edges of the plurality of plate fuel elements; And
Four fixing plates for fixing while fixing the two side plates;
/ RTI >
Wherein the two side plates protrude in the longitudinal direction of the plate fuel for the plurality of plate fuel materials,
Wherein the fixing plate is in contact with the protruding portion of the side plate in the vertical direction to form a protruding portion with an inner space,
Fixtures for processing flat fuel assemblies.
The method according to claim 1,
Wherein the fixture for processing the plate-shaped fuel assembly has a groove or a handle on one side thereof.
The method according to claim 1,
Wherein the lifting portion comprises a lifting plate and lifting means.
3. The method of claim 2,
Wherein the fixing plate is in contact with the protruding portion of the side plate in the vertical direction through welding.
(Step 1) of inserting a fixture for processing a bundle of fuel assemblies into protruding portions at both ends of the bundle of plate fuel assemblies according to claim 1, and contacting at least one of the inner surfaces of the projections with the outer surface of the fixture;
Lifting a lifting portion provided on an outer surface of the fixing member not contacting the inner surface of the protrusion to contact the inner surface of the protrusion to fasten the fixing member to the inner surface of the protrusion (Step 2);
Fixing the plate-like nuclear fuel assemblies fastened to the fixture to a vise of a machining center tooling system (MCT) and performing MCT processing (step 3); And
Separating the planar fuel assemblies subjected to the MCT process from the vise and detaching the fixture (step 4);
Containing
(METHOD OF PROCESSING A SEMICONDUCTOR FUEL SORT)
The method according to claim 6,
Wherein the fixture for machining the plate-shaped fuel assembly has a groove or a handle on one side thereof.
The method according to claim 6,
Wherein the lifting portion comprises a lifting plate and lifting means, the lifting plate contacting the inner surface of the projection.
8. The method of claim 7,
Wherein when the plate fuel assembly assembled with the fixture of step 3 is fixed to the vise of the MCT, the assembly of plate fuel assembled with the fixture is moved by a vise using the groove or the handle.

Images