A nozzle for cleaning-in-place of a vessel has a nozzle body to be connected to a wall of the vessel and defining an opening, a nozzle insert is contained within the nozzle body and is able to assume at least two distinct positions relative to the nozzle body, a first position in which the nozzle insert is retracted into the nozzle body and a second position in which the nozzle insert is advanced in the axial direction relative to the nozzle body and protrudes into the vessel. Apertures are exposed in the second position to allow distribution of a cleaning fluid. The nozzle insert has two nozzle insert parts, in mutual abutment in the first position and spaced from each other in a direction transverse to the axial direction in the second position to form a gap between adjacent nozzle insert parts, the apertures being exposed in the gap.

An apparatus includes a container holding a whitening material, and a dispenser to release the whitening material from the container, wherein the dispenser is configured to simultaneously dispense the whitening material in a spray pattern 360 degrees around the dispenser.

A device is provided for repairing erosion damage to a bore of a railgun with metal powder. The bore has a surface contour that extends longitudinally of the railgun. The device includes a housing, a profilometer sensor and a nozzle. The housing has a configuration that conforms to the surface contour and an upstream face on a longitudinal end. The profilometer sensor mounts to the upstream face to measure depth of the erosion and indicate a divot in the bore that involves repair to match the surface contour. The nozzle mounts to the upstream face to spray the metal powder from a reservoir within the housing in response to the divot indicated by the profilometer.

A method for inspecting and repairing a surface of a component of a gas turbine engine, the method including: inserting an inspection and repair tool into an interior of the gas turbine engine; inspecting the surface of the component with the inspection and repair tool; performing a repair of the surface of the component with the inspection and repair tool from within the interior of the gas turbine engine, the inspection and repair tool remaining within the interior of the gas turbine engine between inspecting the component and performing the repair of the surface of the component.