Methods of cleaning flow path components of power systems, and sump purge kits used in the same or related methods are disclosed. A method of cleaning may include removing a casing of the turbine system to expose a rotor of the turbine system, a plurality of flow path components coupled to the rotor and/or the casing, and a sump system in communication with the rotor. The method may also include pressurizing the sump system in communication with the rotor, and sealing a plurality of openings formed in the rotor. Additionally, the method may include exposing the rotor and the plurality of flow path components to steam to dry hydrocarbons formed on a surface of the rotor and a surface of the plurality of flow path components, and blasting the rotor and the plurality of flow path components with solid carbon dioxide (CO.sub.2) to dislodge the dried hydrocarbons.

Methods of cleaning flow path components of power systems, and sump purge kits used in the same or related methods are disclosed. A method of cleaning may include removing a casing of the turbine system to expose a rotor of the turbine system, a plurality of flow path components coupled to the rotor and/or the casing, and a sump system in communication with the rotor. The method may also include pressurizing the sump system in communication with the rotor, and sealing a plurality of openings formed in the rotor. Additionally, the method may include exposing the rotor and the plurality of flow path components to steam to dry hydrocarbons formed on a surface of the rotor and a surface of the plurality of flow path components, and blasting the rotor and the plurality of flow path components with solid carbon dioxide (CO.sub.2) to dislodge the dried hydrocarbons.

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

Disclosed herein are components, systems, and methods for accessing and disassembling components of hazardous articles. A cutting head of a fluid jet system generates a fluid jet that exits an outlet toward a workpiece to be cut by the fluid jet. A shroud of the fluid jet system radially surrounds the outlet, and contains an inert substance through which the fluid jet travels between the outlet and the workpiece. A fluid jet system includes a sensor to capture an acoustic parameter of the impact of a fluid jet with a workpiece, and upon detection of a change in the acoustic parameter, discontinues generation of the fluid jet. A fluid jet system includes a sensor to measure thicknesses of various regions of the workpiece and a processor to select a path to cut the workpiece based on the measured thicknesses.

Disclosed herein are components, systems, and methods for accessing and disassembling components of hazardous articles. A cutting head of a fluid jet system generates a fluid jet that exits an outlet toward a workpiece to be cut by the fluid jet. A shroud of the fluid jet system radially surrounds the outlet, and contains an inert substance through which the fluid jet travels between the outlet and the workpiece. A fluid jet system includes a sensor to capture an acoustic parameter of the impact of a fluid jet with a workpiece, and upon detection of a change in the acoustic parameter, discontinues generation of the fluid jet. A fluid jet system includes a sensor to measure thicknesses of various regions of the workpiece and a processor to select a path to cut the workpiece based on the measured thicknesses.

A collecting and discharge device for the cutting jet of a fluid jet cutting system, comprises a cutting jet collector and a discharge for the cutting medium flow collected the cutting jet collector. The cutting jet collector has a jet discharge channel with an inlet region for introducing the cutting jet. The cutting jet is in flow connection with an outlet region via an discharge line. The jet discharge channel leads into a suction chamber disposed underneath the outlet region, said suction chamber having an enlarged cross section in the outlet region compared with the cross section of the jet discharge channel. The suction chamber additionally connects the jet discharge channel with the discharge line and with a suction channel as well as being otherwise closed. The suction channel provides suction at a suction opening forming a suction mouth in a suction region surrounding the inlet region of the jet discharge channel.

A nozzle arrangement for use in expelling pressurized fluid includes a dead man control. The dead man control has a manually operable control part movable between a non-operating position, which prevents operation of the nozzle arrangement, and an operating position, and biased towards the non-operating position. The manually operable control part is pivotably coupled relative to a nozzle holder of the nozzle arrangement, which extends away from the pivotal coupling substantially towards a distal end of a nozzle part of the nozzle arrangement. The manually operable control part includes a handle part which in the operating position is substantially against and aligned with the nozzle part.

An actuator is configured to couple with a controlled member and includes first and second pistons disposed in respective internal chambers. The first piston may be moveable between first and second positions. The second piston may be moveable between third and fourth positions. The second piston may be configured not to engage the first piston when the second piston is disposed at the third position. The second piston may be configured to move the first piston to the second position as the second piston moves from the third position to the fourth position. A resilient member may be disposed to resiliently urge the second piston toward the fourth position.

An actuator is configured to couple with a controlled member and includes first and second pistons disposed in respective internal chambers. The first piston may be moveable between first and second positions. The second piston may be moveable between third and fourth positions. The second piston may be configured not to engage the first piston when the second piston is disposed at the third position. The second piston may be configured to move the first piston to the second position as the second piston moves from the third position to the fourth position. A resilient member may be disposed to resiliently urge the second piston toward the fourth position.