Collector, for nuclear power station heat exchanger tube descaling residues, has suction source and pipe passing through sealable orifice

摘要

The collector, for liquid and solid descaling residues, comprises a holder for the ends of heat exchanger tubes at the upper end of a chamber containing a pipe connected to a suction source through sealable orifice. The end of the suction pipe takes in residues and debris deposited on the bottom of the chamber from the descaled tubes. The inner surface of the chamber has a protective liner of a thin and flexible polymer film material. The collector, for liquid and solid descaling residues, comprises a holder (6) for the ends of heat exchanger tubes (7) at the upper end of a chamber (2) containing a pipe (8) connected to a suction source and passing through a service orifice (10) in the chamber wall fitted with a hermetic sealing system (16, 17, 18, 19, 20). The end (24) of the suction pipe takes in residues and debris deposited on the bottom of the chamber from the descaled tubes. The inner surface of the chamber has a protective liner (30) of a thin and flexible polymer film material, held in place by magnetic fastenings (31) round its upper edge (32).