Minature sludge lance apparatus

A miniature sludge lance for use in a steam generator, said steam generator having a shell defining an enclosed space, at least one primary fluid inlet port, at least one primary fluid outlet port, at least one second fluid inlet port, at least one second fluid outlet port, a plurality of substantially uniformly sized tubes extending between, and in fluid communication with, said at least one primary fluid inlet port and at least one primary fluid outlet port, said tubes disposed in a substantially regular pattern having substantially uniform, narrow gaps between adjacent tubes, said shell having at least one inspection opening disposed adjacent to said plurality of tubes, said sludge lance comprising:

• a mounting assembly structured to support a drive assembly and a rail;
• a drive assembly structured to move a rail through said inspection opening, said drive assembly coupled to said mounting assembly;
• an elongated rail having a body and a drive shaft, said rail body having a first end and a second end, said rail body sized to pass between adjacent tubes, said rail body defining a water passage and a drive shaft passage, said drive shaft rotatably disposed in said drive shaft passage, said rail body movably coupled to said drive assembly, said rail water passage structured to be coupled to, and in fluid communication with, a water supply;
• a nozzle assembly having a body assembly, said nozzle assembly body assembly sized to pass between adjacent tubes, said nozzle assembly body assembly defining a water passage, said nozzle assembly body assembly coupled to said rail body with said nozzle assembly body assembly water passage being in fluid communication with said rail body water passage;
• and
• whereby, as said rail body is moved through said inspection opening, said nozzle assembly passes between adjacent tubes.