DISASSEMBLY OF A PIPE SUPPORT WITH SPRING

Description

[0001] The invention relates to a method, according to the preamble of patent claim 1, for dismantling a pipe support, in particular a spring hanger or a spring support. Such pipe supports are used, for example, in power plants, especially nuclear power plants. In particular, the invention relates to the dismantling or repair of a power plant. The invention also relates to an arrangement for dismantling a pipe support, according to the preamble of patent claim 7.

[0002] Document US 3 504 419 A discloses a method according to the preamble of claim 1 and an arrangement according to the preamble of claim 7.

[0003] In power plants, as well as in industry, it is common practice to secure pipelines using so-called spring hangers or spring supports. A spring hanger is used to suspend a pipeline, for example, under a ceiling. A spring support is used to secure a pipeline to a floor. The term "pipe support" is used here as a generic term for spring hangers or spring supports. Pipe supports have a spring that holds the pipeline. The spring can compensate for expansion and displacement.

[0004] A variety of pipe support designs are known. A spring hanger, for example, is known from DE 23 20 002 A1. Therein, the spring hanger is also referred to as a pipe hanger. A spring support is known, for example, from DE 10 2014 107 701 A1. All of these pipe supports have a housing in which a preloaded spring is arranged. Due to the preload, the spring represents a source of danger. If a pipe support is to be dismantled at the end of its service life, the spring can relax uncontrollably. If the housing were to be opened without further action, the spring would relax suddenly. This could cause the spring to escape from the housing at great speed. The spring itself and / or objects carried along by it could endanger people and / or damage objects. The same applies if a pipe support is melted down.As soon as the housing can no longer withstand the spring force, the spring can relax uncontrollably.

[0005] The object of the present invention is to provide, based on the described prior art, a safe possibility for dismantling a pipe holder with a tensioned spring.

[0006] This object is achieved by the methods and arrangement according to the independent claims. Further advantageous embodiments are specified in the dependent claims.

[0007] According to the invention, a method for dismantling a pipe support according to claim 1 is presented.The pipe holder has a housing which comprises a casing, a first end plate fastened to the casing on a first end face of the housing and a second end plate fastened to the casing on a second end face of the housing opposite the first end face, wherein a spring and an axially movable spring plate are arranged within the housing, wherein the spring bears on the one hand against the spring plate and on the other hand against the second end plate and is thereby compressed in such a way that the spring exerts a spring force on the spring plate in the direction of the first end plate, wherein a stop element is arranged between the first end plate and the spring plate, which stop element limits the axial movement of the spring plate in such a way that the spring is compressed when the spring plate bears against the stop element, and wherein the method comprises the following steps: . a) using a force generating device to exert a force on the spring plate which counteracts the spring force generated by the spring, b) removing the stop element while the force generated on the spring plate by the force generating device is at least as great as the spring force generated by the spring, c) reducing the force generated on the spring plate by the force generating device to an amount below the spring force generated by the spring, d) opening the housing, and e) removing the spring and the spring plate from the housing.

[0008] This procedure is used to disassemble a pipe support. The pipe support can be disassembled using the described procedure, for example, at the end of its service life. The individual parts of the pipe support can then be disposed of or recycled. Alternatively, the pipe support can be disassembled using the described procedure and reassembled after repair.

[0009] The pipe support can, in particular, be a spring hanger or a spring support. The method can therefore also be referred to as a "method for dismantling a spring hanger or a spring support." For the method, it is irrelevant whether the pipe support was previously used, for example, to suspend a pipe from a ceiling or to secure a pipe above a floor.

[0010] Pipelines supported by pipe supports of the type considered here are particularly common in power plants. This method can therefore be used particularly during the dismantling or repair of a power plant. Alternatively, the method can also be applied to industrial plants. However, the previous purpose of the pipe support is irrelevant for the method. The pipe support can also be transported to another location for dismantling as described. For example, the described method can be carried out at a waste disposal company, to which the pipe support is brought for dismantling.

[0011] The pipe holder comprises a housing. The housing has a shell and two end plates. A first of the end plates is attached to the shell on a first end face of the housing. This can be the case in particular by a welded connection or by a screw connection. A second of the end plates is attached to the shell on a second end face of the housing opposite the first end face. This can be the case in particular by a welded connection or by a screw connection. In the simplest case, the housing is designed as a cylinder. In this case, the shell is a cylindrical shell. The first end plate is a cover and the second end plate is a base, or vice versa. However, for the described method it is not important whether the housing has a circular cross-section. The housing can therefore also have a shape other than a cylinder.

[0012] A spring is arranged inside the housing. The spring is preferably arranged such that an axis of the spring coincides with an axis of the housing. If the housing is cylindrical, the axis of the housing is the cylinder axis. If the housing is not cylindrical, an analogous definition applies. The first end plate and the second end plate are arranged on the axis and spaced from one another along the axis. Preferably, the first end plate is perpendicular to the axis and / or the second end plate is perpendicular to the axis. The spring can be compressed or stretched along the axis. The spring force generated by the spring preferably acts along the axis.

[0013] An axially movable spring plate is also arranged within the housing. The spring plate is axially movable to the extent that it can be moved along the axis of the housing. The spring plate is preferably designed as a disc. The spring plate is preferably arranged perpendicular to the axis. The spring plate is preferably arranged perpendicular to the first end plate and / or perpendicular to the second end plate.

[0014] The spring rests on the spring plate on one side and on the second end plate on the other. It is sufficient for the spring to be loosely in contact with the spring plate and the second end plate. It is not required, but possible, for a first end of the spring to be firmly connected to the spring plate. It is not required, but possible, for a second end of the spring to be firmly connected to the second end plate.

[0015] The spring is compressed in such a way that the spring exerts a spring force on the spring plate in the direction of the first end plate. Consequently, the spring also exerts a spring force on the second end plate, which force is directed away from the first end plate. The spring is therefore clamped between the spring plate and the second end plate. In this respect, the spring is preloaded. This is possible because, on the one hand, the spring rests against the fixed second end plate. On the other hand, the preload of the spring implies that the spring plate is held so firmly that the spring cannot move the spring plate in the direction of the first end plate. This can be the case because an external force acts on the spring plate in the direction of the second end plate. The force generated by the spring is not such an external force. During operation, the external force can be the weight of a cable.However, the spring is preloaded even when no external force acts on the spring plate. This is especially the case in the as-delivered state of the pipe bracket. This is possible because the stop element is provided between the first end plate and the spring plate, against which the spring plate rests, provided no external force acts on the spring plate in the direction of the second end plate.

[0016] The stop element is arranged between the first end plate and the spring plate. It limits the axial movement of the spring plate such that the spring is compressed when the spring plate rests against the stop element. This means that the spring is compressed at least in this case. If the spring plate does not rest against the stop element, the spring is further compressed than when the spring plate rests against the stop element. The spring plate does not rest against the first end plate even when no external force acts on the spring plate.

[0017] The design of the stop element is irrelevant to the functioning of the method. The stop element can be designed, for example, as a screw that is held in a thread in the first end plate and holds the spring plate at a minimum distance from the first end plate along the axis of the housing. Alternatively, the stop element can be designed, for example, as a bolt or a fixed projection.

[0018] The spring is therefore always compressed. Energy is stored in the spring, which can be released uncontrollably when the pipe support is disassembled. Therefore, the spring represents a source of danger. However, the pipe support can be safely disassembled using the described procedure. The key idea is that the spring is initially compressed further and only then released in a controlled manner once the stop element has been removed. The housing can then be opened and disassembly completed. This is done in steps a) to e) of the procedure.

[0019] In step a), a force is exerted on the spring plate using a force generating device, which counteracts the spring force generated by the spring. The type of force generating device used is irrelevant to the functioning of the method. The force can be generated hydraulically, pneumatically and / or mechanically, for example. The force generated by the force generating device counteracts the spring force. It is also irrelevant how the force is transferred from the force generating device to the spring plate. This can be done, for example, via a rod that rests on the force generating device on the one hand and on the spring plate on the other. It is irrelevant whether the rod is considered part of the force generating device, part of the pipe holder, or as an independent element. The force generating device can be designed as a pull-and-push device.However, depending on the type of pipe support, a pure pulling device or a pure pushing device can also be used.

[0020] The spring is further compressed as soon as the force applied to the spring plate by the force-generating device is greater than the spring force generated by the spring. Since the force generated by the spring is path-dependent, a force equilibrium will be established if the force applied to the spring plate by the force-generating device remains constant. Further compressing the spring increases the potential danger and therefore initially appears to be ineffective. However, this is compensated for by the subsequent steps.

[0021] As soon as the force generated by the force-generating device on the spring plate is at least as great as the spring force generated by the spring, the stop element can be removed. This occurs in step b). For at least the duration of step b), the force generated by the force-generating device on the spring plate is at least as great as the spring force generated by the spring. This secures the spring, allowing the stop element to be safely removed.

[0022] If the spring plate was resting against the stop element between the spring plate and the first end plate prior to step a), the spring plate is moved away from the stop element by the force generated by the force-generating device on the spring plate. If the stop element is removed, the spring continues to be held by the spring plate. This prevents uncontrolled relaxation of the spring.

[0023] Removing the stop element without the force generated by the force-generating device on the spring plate being at least as great as the spring force generated by the spring may be difficult or impossible due to frictional engagement. Furthermore, if the stop element is suddenly removed, the spring could suddenly release completely or partially within the housing. This also represents a potential hazard.

[0024] The described method can be applied in particular to pipe supports in which the spring is relaxed within the housing without the stop element.

[0025] In step c), the force generated by the force-generating device on the spring plate is reduced to a value below the spring force generated by the spring. This relaxes the spring. This can be done in a controlled and therefore safe manner. Step c) preferably lasts at least one second, in particular at least five seconds. This quantifies that the force generated by the force-generating device on the spring plate is slowly reduced to relax the spring in a controlled manner.

[0026] In step d), the housing is opened. Since the spring has been relieved by step c), it is irrelevant how this is done. For example, the first end plate and / or the second end plate can be separated from the casing. Alternatively or additionally, the casing can be opened, for example. Step d) is performed after completion of step c).

[0027] In step e), the spring and spring plate are removed from the housing. Step e) is performed after completing step d).

[0028] In a preferred embodiment, in step d) at least the second end plate is separated from the casing and a part of the spring adjacent to the second end plate is separated from the remaining spring.

[0029] Before the method is carried out, the spring rests against the second end plate. After the spring has been relaxed by steps a) to c), the spring can still rest loosely against the second end plate. If the housing is opened in this case by separating the second end plate from the casing, part of the spring can also be severed from the remaining part of the spring. This is accepted in the present embodiment in order to be able to open the housing easily. The fact that the spring is also severed does not represent a significant disadvantage. After all, the method serves the purpose of disassembly anyway.

[0030] In a further preferred embodiment of the method, at least during steps a) to c), a rod is attached to the spring plate, which rod is guided through the first end plate, and wherein the force in steps a) to c) is exerted on the spring plate via the rod.

[0031] In this embodiment, the rod and the spring are arranged on different sides of the spring plate. This allows a compressive force to be exerted on the rod to further compress the spring. The force-generating device in this case is preferably designed as a pushing device. This does not necessarily have to be capable of generating a tensile force. However, a force-generating device designed as a pushing and pulling device can also be used.

[0032] The rod is preferably removed from the housing in step e). This naturally only applies if the rod was not already protruding from the housing. Alternatively, the rod can be removed before step d), for example, by separating the rod from the spring plate. This is particularly preferred if the housing is to be opened by separating the first end plate from the casing.

[0033] In a further preferred embodiment of the method, the housing of the pipe holder is held in a holder at least during steps a) to c), wherein the holder and the force generating device are fixed on a work table.

[0034] The method is preferably carried out using an assembly configured for dismantling the pipe support. The workbench is part of this assembly. The workbench allows the force-generating device and the holder to be held firmly relative to one another. This makes it possible to compress the spring using the force-generating device. Once the spring is released after step c), the pipe support housing no longer needs to be held in the holder. For practical reasons, however, the pipe support housing can also be held in the holder during steps d) and / or e).

[0035] In a further preferred embodiment of the method, the housing is opened in step b) with a saw attached to the workbench.

[0036] The saw is preferably a reciprocating saw or a circular saw. The housing can be opened with the saw, in particular by sawing off the second end plate from the casing.

[0037] In a further preferred embodiment of the method, the spring has a spring constant of at least 20 kN / m, preferably of at least 200 kN / m, particularly preferably of at least 2000 kN / m.

[0038] The described method is particularly useful when the spring is so strong that it poses a significant safety risk. The greater the force generated by the spring, the greater the associated safety risk. However, the force generated by the spring depends on the deflection of the spring. Therefore, the force generated by the spring is not suitable for a quantitative definition of a "strong spring." Instead, the spring constant is used. The larger the spring constant, the stronger the spring and the more useful the application of the described method.

[0039] Alternatively or in addition to the spring constant, other properties of the spring can also be used to define the preferred application area of ​​the described method. The spring preferably has a mass of more than 1 kg, in particular more than 10 kg. The spring preferably has a diameter of at least 2 cm, in particular at least 10 cm, in the relaxed state.

[0040] As a further aspect of the invention, an arrangement for disassembling a pipe support is presented, according to claim 7. The arrangement comprises: a workbench, a force generating device, a holder for a pipe support housing, a saw, wherein the force generating device, the holder and the saw are fastened to the workbench, wherein the force generating device and the holder are arranged on an axis, wherein the force generating device is configured to generate a force along the axis, and wherein the axis crosses a cutting plane of the saw, and wherein the holder is arranged between the force generating device and the cutting plane.

[0041] The described advantages and features of the method are applicable and transferable to the assembly, and vice versa. The method is preferably carried out with the assembly. The assembly is preferably configured to carry out the method. The assembly is preferably configured to disassemble a pipe holder configured as described.Such a pipe holder has a housing which comprises a casing, a first end plate fastened to the casing on a first end face of the housing and a second end plate fastened to the casing on a second end face of the housing opposite the first end face, wherein a spring and an axially movable spring plate are arranged within the housing, wherein the spring bears on the one hand against the spring plate and on the other hand against the second end plate and is thereby compressed in such a way that the spring exerts a spring force on the spring plate in the direction of the first end plate, wherein a stop element is arranged between the first end plate and the spring plate, which stop element limits the axial movement of the spring plate in such a way that the spring is compressed when the spring plate bears against the stop element.

[0042] The force-generating device can be used to apply the force to the spring plate in steps a) to c). The housing of the pipe holder can be held in the holder. The saw can be used to open the housing in step d).

[0043] The force-generating device, the holder, and the saw are attached to the workbench. This makes it particularly easy to hold the pipe clamp securely and compress the spring with the force-generating device. The force-generating device, the holder, and the saw are each preferably attached to the surface of the workbench.

[0044] The force-generating device and the holder are arranged on an axis. The force-generating device is configured to generate a force along the axis. The pipe holder is preferably inserted into the holder such that the axis of the spring of the pipe holder coincides with the axis described here. The force-generating device can thus generate a force counter to the spring force generated by the spring of the pipe holder.

[0045] The axis crosses a cutting plane of the saw, preferably vertically. The saw can thus make a cut that crosses the axis described here. The holder is positioned between the force-generating device and the cutting plane. The housing can thus be held where the saw is applied. This allows the second end plate to be separated from the casing with the saw.

[0046] The arrangement can in particular be an arrangement for disassembling a pipe holder, wherein the pipe holder has a housing which comprises a casing, a first end plate fastened to the casing on a first end face of the housing, and a second end plate fastened to the casing on a second end face of the housing opposite the first end face, wherein a spring and an axially movable spring plate are arranged within the housing, wherein the spring bears on the one hand against the spring plate and on the other hand against the second end plate and is thereby compressed such that the spring exerts a spring force on the spring plate in the direction of the first end plate, wherein a stop element is arranged between the first end plate and the spring plate, which limit the axial movement of the spring plate such that the spring is compressed when the spring plate bears against the stop element, and wherein the arrangement comprises: a workbench, a force generating device for exerting a force on the spring plate which counteracts the spring force generated by the spring, a holder for a housing of the pipe holder, a saw for opening the housing, wherein the force generating device, the holder and the saw are attached to the workbench, wherein the force generating device and the holder are arranged on an axis, wherein the force generating device is adapted to generate a force along the axis, and wherein the axis crosses a cutting plane of the saw, and wherein the holder is arranged between the force generating device and the cutting plane.

[0047] In a preferred embodiment of the arrangement, a surface of the workbench has a plurality of bores, wherein the holder and / or the force-generating device are each fixed to the surface of the workbench via at least one fastening element, with each of the fastening elements being secured in at least one of the bores. The "and" case is preferred.

[0048] The holes are preferably arranged regularly, for example, in a grid. The surface of the workbench can, in particular, be designed as a perforated board. The holder and / or the force-generating device can be attached to the surface particularly easily and flexibly. In particular, the holder and the force-generating device can be easily positioned relative to one another in order to adjust the arrangement to the dimensions of a specific pipe support. This is advantageous because pipe supports are available in various designs and sizes.

[0049] The bores can be designed, in particular, as blind holes or through holes. The fastening elements can, in particular, be screws or bolts. Preferably, each fastening element engages in exactly one bore. However, a design is also conceivable, for example, in which a fastening element has two or more screws or bolts, each of which engages in one of the bores.

[0050] In a further preferred embodiment of the arrangement, the force generating device comprises a hydraulic cylinder within which a piston is guided in an axially movable manner.

[0051] The force generating device is designed to generate a force linearly. In the present embodiment, this is done hydraulically. The force generating device comprises the hydraulic cylinder, within which the piston is guided for axial movement. This refers to the axis along which the force is generated. The hydraulic cylinder preferably has a hydraulic chamber on each side of the piston. By introducing and discharging a hydraulic medium into and out of the hydraulic chambers, the piston can be displaced linearly, thereby generating the force. The use of a force generating device designed as described has the advantage that it can generate a sufficiently large force. Furthermore, this force can be reduced again in a controlled manner. This allows the spring to be relaxed in a controlled manner.

[0052] As a further aspect of the invention, a method according to claim 10 is presented for dismantling or repairing a power plant. The power plant has a pipeline held by a pipe support. The method comprises the following steps: A) Removing the pipe support from the pipeline, B) Dismantling the pipe support using a method for dismantling a pipe support as described.

[0053] The described advantages and features of the method for dismantling a pipe support and the arrangement are applicable and transferable to the method for dismantling or repairing a power plant, and vice versa.

[0054] The invention is explained in more detail below with reference to the figures. The figures show a particularly preferred embodiment, to which the invention is not limited, however. The figures and the proportions depicted therein are merely schematic. They show: Fig. 1: a side sectional view of a pipe holder, Fig. 2: a plan view of an arrangement according to the invention for disassembling a pipe holder, into which the pipe holder from Fig. 1 is inserted, and Fig. 3: a side sectional view of a part of a power plant with a pipeline which is connected via the pipe support made of Fig. 1 is held.

[0055] Fig. 1shows a pipe holder 1 designed as a spring support. The pipe holder 1 has a housing 2, which has a casing 3 and two end plates 5, 7. A first of the end plates 5 is fastened to the casing 3 on a first end face 4 of the housing 2. A second of the end plates 7 is fastened to the casing 3 on a second end face 6 of the housing 2 opposite the first end face 4. Arranged within the housing 2 are a spring 8 and a spring plate 9 which can be moved axially up and down. The spring 8 rests on the one hand on the spring plate 9 and on the other hand on the second end plate 7 and is thereby compressed in such a way that the spring 8 exerts a spring force 12 on the spring plate 9 in the direction of the first end plate 5 (i.e. upwards here).

[0056] Between the first end plate 5 and the spring plate 9, a stop element 13, designed here as a screw, is arranged, which limits the axial movement of the spring plate 9 in such a way that the spring 8 is compressed even when the spring plate 9 is as in Fig. 1 shown rests against the stop element 13. A rod 14 is attached to the spring plate 9 and is guided through the first end plate 5.

[0057] Fig. 2 shows an arrangement 26 for disassembling a pipe support 1. The arrangement 26 comprises a work table 16. A force generating device 10, a holder 15 for the pipe support 1 and a saw 17 are attached to an upper side of the work table 16. In Fig. 2 a state is shown in which the pipe holder 1 is made of Fig. 1 is received by the holder 15. The pipe holder 1 is not part of the arrangement 26.

[0058] The force generating device 10 and the holder 15 are arranged on an axis 18. The force generating device 10 is configured to generate a force 11 along the axis 18. The axis 18 intersects a cutting plane 19 of the saw 17. The cutting plane 19 of the saw 17 is perpendicular to the plane of the drawing. The holder 15 is arranged between the force generating device 10 and the cutting plane 19.

[0059] The surface of the workbench 16 has a plurality of holes 20. The holder 15 and the force generating device 10 are each fixed to the surface of the workbench 16 via a plurality of fastening elements 21, each of which is secured in one of the holes 20.

[0060] The force generating device 10 has a hydraulic cylinder 22, within which a piston 23 is guided for axial movement. A hydraulic chamber is provided on each side of the piston 23 within the hydraulic cylinder 22. By introducing and discharging a hydraulic medium into and out of the hydraulic chambers, the piston 23 can be displaced to the right and left. This generates the force 11 that counteracts the spring force 12 generated by the spring 8 of the pipe holder 1.

[0061] With the arrangement 26, the pipe holder 1 can be dismantled by the following steps: a) using the force generating device 10 to exert the force 11 on the spring plate 9, which counteracts the spring force 12 generated by the spring 8, b) removing the stop element 13 while the force 11 generated on the spring plate 9 by the force generating device 10 is at least as great as the spring force 12 generated by the spring 8, c) reducing the force 11 generated on the spring plate 9 by the force generating device 10 to an amount below the spring force 12 generated by the spring 8, d) opening the housing 2 by using the saw 17 to separate the second end plate 7 from the casing 3, wherein a part of the spring 8 resting on the second end plate 7 is separated from the remaining spring 8, and e) removing the spring 8 and the spring plate 9 from the housing 2.

[0062] In steps a) to c), the force 11 is exerted on the spring plate 9 via the rod 14.

[0063] Fig. 3shows a part of a power plant 25 with a pipeline 24, which is connected via the pipe support 1 from Fig. 1 is held on a base. The rod 14 of the pipe holder 1 is connected to the pipe 24. The housing 2 is attached to its underside. The power plant 25 from Fig. 3 may be subjected to a process of dismantling or repair, which includes the following steps: A) Remove the pipe support 1 from the pipe 24, B) Dismantle the pipe support 1 with the Fig. 2 described procedures. List of reference symbols

[0064] 1Pipe holder 2Housing 3Shroud 4First end face 5First end plate 6Second end face 7Second end plate 8Spring 9Spring plate 10Force generating device 11Force 12Spring force 13Stop element 14Rod 15Holder 16Workbench 17Saw 18Axis 19Cutting plane 20Bore 21Fastener 22Hydraulic cylinder 23Piston 24Pipeline 25Power plant 26Arrangement

Claims

1. Method for disassembling a pipe mount (1), wherein the pipe mount (1) has a housing (2) which comprises a shell (3) and a first end plate (5) fastened to the shell (3) on a first end side (4) of the housing (2), characterized in that the pipe mount (1) comprises a second end plate (7) attached to the shell (3) on a second side (6) of the housing (2) lying opposite the first end side (4), wherein a spring (8) and an axially movable spring collar (9) are arranged within the housing (2), wherein the spring (8) bears firstly against the spring collar (9) and secondly against the second end plate (7) and is compressed as a result in such a way that the spring (8) exerts a spring force (12) on the spring collar (9) in the direction of the first end plate (5), wherein a stop element (13) is arranged between the first end plate (5) and the spring collar (9), which limits the axial movement of the spring collar (9) in such a way that the spring (8) is compressed when the spring collar (9) bears against the stop element (13), and wherein the method comprises the following steps: a) exerting a force (11) on the spring collar (9) by way of a force-generating device (10), which force counteracts the spring force (12) generated by the spring (8), b) removing the stop element (13) while the force (11) generated by the force-generating device (10) on the spring collar (9) is at least as great as the spring force (12) generated by the spring (8), c) reducing the force (11) generated by the force-generating device (10) on the spring collar (9) to an amount below the spring force (12) generated by the spring (8), d) opening the housing (2), and e) removing the spring (8) and the spring collar (9) from the housing (2).

2. Method according to Claim 1, wherein, in step d), at least the second end plate (7) is separated from the shell (3) and a part of the spring (8) which bears against the second end plate (7) is separated from the remaining spring (8).

3. Method according to one of the preceding claims, wherein, at least during steps a) to c), a rod (14) is fastened to the spring collar (9), which rod is guided through the first end plate (5), and wherein the force (11) is exerted on the spring collar (9) via the rod (14) in steps a) to c).

4. Method according to one of the preceding claims, wherein the housing (2) of the pipe mount (1) is held in a holder (15) at least during steps a) to c), and wherein the holder (15) and the force-generating device (10) are fixed on a worktable (16).

5. Method according to one of the preceding claims, wherein, in step d), the housing (2) is opened with a saw (17) fastened to the worktable (16).

6. Method according to one of the preceding claims, wherein the of the spring (8) has a spring constant of at least 20 kN / m.

7. Arrangement (26) for disassembling a pipe mount (1), comprising: - a worktable (16), - a force-generating device (10), and - a holder (15) for a housing (2) of the pipe mount (1), characterized in that the arrangement comprises a saw (17), wherein the force-generating device (10), the holder (15) and the saw (17) are fastened to the worktable (16), wherein the force-generating device (10) and the holder (15) are arranged on an axis (18), wherein the power generating device (10) is set up to generate a force (11) along the axis (18), and wherein the axis (18) crosses a cutting plane (19) of the saw (17), and wherein the holder (15) is arranged between the force-generating device (10) and the cutting plane (19).

8. Arrangement (26) according to Claim 7, wherein a surface of the worktable (16) has a plurality of bores (20), and wherein the holder (15) and / or the force-generating device (10) are / is each fixed via at least one fastening element (21) on the surface of the worktable (16), by each of the fastening elements (21) being secured in at least one of the bores (20).

9. Arrangement (26) according to either of Claims 7 or 8, wherein the force-generating device (10) has a hydraulic cylinder (22), within which a piston (23) is guided axially movably.

10. Method for dismantling or repairing a power plant (25) which has a pipeline (24) which is held by a pipe mount (1), wherein the method comprises the following steps: a) removing the pipe mount (1) from the pipeline (24), b) dismantling the pipe mount (1) by means of a method according to one of Claims 1 to 6.