Abstract:
A cooled shroud assembly includes an angled slot and a plurality of dilution jet openings. The shroud forward cavity is modified such that at least one recirculation zone is produced. The angled slot forces an axial change in momentum of the hot gas flow and increases radial and axial pressure variation attenuation. The cooled shroud assembly isolates the shroud structure and seals from the hot flow path and a cooling flow from the dilution jet openings dilutes the hot gas flow. A series of recirculation zones shields the shroud carrier and high pressure seals from the hot gas flow.
Abstract:
The method includes the steps of pumping solvent under pressure into the mass of sludge, pumping the resultant mixture of solvent and dissolved sludge into the remaining mass of sludge until all or substantially all of the sludge is dissolved to a pumpable viscosity, pumping the dissolved sludge from the containment, and monitoring and controlling the aforementioned steps remotely. Apparatus for performing the method is also disclosed. This includes elements for pumping the solvent and dissolved sludge mixture into the remaining mass of sludge, elements for removing the dissolved sludge from the containment, elements for supporting and transporting the pumping elements through the dissolved sludge mixture and elements for monitoring and controlling the apparatus remotely.