Patent Number: 
Section: claims

1. An apparatus for inspecting a nuclear reactor, the apparatus comprising:a first track;an arm including one or more second tracks;a fixing device; andan effector;wherein the arm is operatively connected to the first track,wherein at least one of the one or more second tracks includes at least three track sections,wherein the fixing device is operatively connected to the first track,wherein the effector is operatively connected to the arm,wherein the arm has a contracted length,wherein the arm has an expanded length, andwherein the expanded length is greater than two times the contracted length. 2. The apparatus of claim 1, wherein the first track comprises one or more motors adapted to move the arm relative to the first track. 3. The apparatus of claim 1, wherein the first track comprises one or more motors adapted to move the arm along the first track. 4. The apparatus of claim 1, wherein the first track comprises one or more motors adapted to move the arm relative to the operative connection of the arm to the first track. 5. The apparatus of claim 1, wherein the first track comprises one or more motors adapted to rotate the arm relative to the first track. 6. The apparatus of claim 1, wherein the first track comprises first, second, and third motors,wherein the first motor is adapted to move the arm relative to the operative connection of the arm to the first track,wherein the second motor is adapted to move the arm along the first track, andwherein the third motor is adapted to rotate the arm relative to the first track. 7. The apparatus of claim 1, further comprising:a cable management system. 8. The apparatus of claim 7, wherein the first track comprises at least a portion of the cable management system. 9. The apparatus of claim 7, wherein the arm comprises at least a portion of the cable management system. 10. The apparatus of claim 1, wherein the arm is adapted to move relative to the first track. 11. The apparatus of claim 1, wherein the arm is adapted to move along the first track. 12. The apparatus of claim 1, wherein the arm is adapted to move relative to the operative connection of the arm to the first track. 13. The apparatus of claim 1, wherein the arm is adapted to rotate relative to the first track. 14. The apparatus of claim 1, wherein at least one of the one or more second tracks is a curved track. 15. The apparatus of claim 1, wherein at least one of the one or more second tracks is a substantially straight track. 16. The apparatus of claim 1, wherein the at least three sections are adapted to contract the arm to the contracted length,wherein the at least three sections are adapted to expand the arm to the expanded length, orwherein the at least three sections are adapted to contract the arm to the contracted length and the at least three sections are adapted to expand the arm to the expanded length. 17. The apparatus of claim 1, wherein the fixing device comprises one or more scissor jacks. 18. The apparatus of claim 1, wherein the fixing device comprises one or more hydraulic cylinders, one or more pneumatic cylinders, or one or more hydraulic cylinders and one or more pneumatic cylinders. 19. The apparatus of claim 1, wherein the fixing device comprises one or more hydraulic pistons, one or more pneumatic pistons, or one or more hydraulic pistons and one or more pneumatic pistons. 20. The apparatus of claim 1, wherein the operative connection of the effector to the arm comprises a bracket. 21. The apparatus of claim 20, wherein the bracket is spring-loaded. 22. The apparatus of claim 1, wherein the operative connection of the effector to the arm comprises a gimbal. 23. The apparatus of claim 1, wherein the effector comprises one or more sensors. 24. The apparatus of claim 23, wherein the one or more sensors comprise at least one camera. 25. The apparatus of claim 23, wherein the one or more sensors comprise at least one video camera. 26. The apparatus of claim 23, wherein the one or more sensors comprise at least one transducer. 27. The apparatus of claim 23, wherein the one or more sensors comprise at least one ultrasonic transducer. 28. An apparatus for inspecting a nuclear reactor, the apparatus comprising:a first track;an arm including one or more second tracks;a fixing device; andan effector;wherein the arm is operatively connected to the first track,wherein at least one of the one or more second tracks includes at least three track sections,wherein the fixing device is operatively connected to the first track,wherein the effector is operatively connected to the arm, andwherein the first track includes one or more motors adapted to move the arm relative to the first track. 29. The apparatus of claim 28, wherein the first track comprises one or more motors adapted to move the arm along the first track. 30. The apparatus of claim 28, wherein the first track comprises one or more motors adapted to move the arm relative to the operative connection of the arm to the first track. 31. The apparatus of claim 28, wherein the first track comprises one or more motors adapted to rotate the arm relative to the first track. 32. The apparatus of claim 28, wherein the first track comprises first, second, and third motors,wherein the first motor is adapted to move the arm relative to the operative connection of the arm to the first track,wherein the second motor is adapted to move the arm along the first track, andwherein the third motor is adapted to rotate the arm relative to the first track. 33. An apparatus for performing maintenance on or repairing a nuclear reactor, the apparatus comprising:a first track;an arm including one or more second tracks;a fixing device;one or more sensors; andone or more tools;wherein the arm is operatively connected to the first track,wherein at least one of the one or more second tracks includes at least three track sections,wherein the fixing device is operatively connected to the first track,wherein the one or more sensors, the one or more tools, or the one or more sensors and the one or more tools are operatively connected to the arm,wherein the arm has a contracted length,wherein the arm has an expanded length, andwherein the expanded length is greater than two times the contracted length. 34. An apparatus for performing maintenance on or repairing a nuclear reactor, the apparatus comprising:a first track;an arm including one or more second tracks;a fixing device;one or more sensors; andone or more tools;wherein the arm is operatively connected to the first track,wherein at least one of the one or more second tracks includes at least three track sections,wherein the fixing device is operatively connected to the first track,wherein the one or more sensors, the one or more tools, or the one or more sensors and the one or more tools are operatively connected to the arm, andwherein the first track includes one or more motors adapted to move the arm relative to the first track. 35. The apparatus of claim 28, wherein the arm is adapted to move relative to the first track. 36. The apparatus of claim 28, wherein the at least three sections are adapted to contract the arm to the contracted length,wherein the at least three sections are adapted to expand the arm to the expanded length, orwherein the at least three sections are adapted to contract the arm to the contracted length and the at least three sections are adapted to expand the arm to the expanded length.