Method for servicing a steam generator
Patent 4262402 Issued on April 21, 1981. Estimated Expiration Date: 
October 18, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 18, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2922332 3598978 3633011 3764775 3898440 Automated drilling system Method and apparatus for compensating for unprogrammed changes in relative position between a machine and workpiece Mounting arrangement for anchor fingers on a surface traversing apparatus Patent #: 4018346 InventorsAssigneeApplicationNo. 05/952431 filed on 10/18/1978US Classes:29/890.121, Repairing, converting, servicing or salvaging228/183, Heat exchanger structure228/7, WITH MACHINE PART RESPONSIVE TO TEMPLATE OR PATTERN OR TO INDICIA CARRIED BY AUXILIARY RECORD (E.G., TAPE, CARD, ETC.)29/33T, Work on tubes29/727, Including deforming means29/890.051, Boiler making376/260, HANDLING OF FISSION REACTOR COMPONENT STRUCTURE WITHIN REACTOR SYSTEM408/1R, PROCESSES408/3WITH MEANS TO REGULATE OPERATION BY USE OF TEMPLET, TAPE, CARD, OR OTHER REPLACEABLE INFORMATION SUPPLYExaminersPrimary: Hall, Carl E.Attorney, Agent or FirmInternational ClassesF22B 37/00 (20060101)G12B 5/00 (20060101) AbstractA servicing machine for a steam generator is accurately set up in the generator channel head with a pivoted arm mounted for rotation in a plane parallel to the tubesheet. The angular position of the arm, the longitudinal position of a carriage mounted on the arm and the vertical position of a platform on the carriage are remotely controlled to maneuver a probe used in mapping the precise location of the thousands of holes in the tubesheet. Various operations are then performed at each precise hole location by tools carried by the arm mounted carriage to prepare for installation of new tubing. The operation of a pair of remotely controlled pivoted arms, one on each side of the channel head divider plate, is coordinated to automatically position the ends of U-shaped tubes in corresponding holes in the tubesheet on opposite sides of the divider plate and to secure the same in place. | |
