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Coughlin Jeffrey - One of the best experts on this subject based on the ideXlab platform.

  • DEVELOPMENT OF REMOTE HANFORD CONNECTOR GASKET REPLACEMENT TOOLING FOR DWPF
    Savannah River Site (S.C.), 2009
    Co-Authors: Krementz D., Coughlin Jeffrey
    Abstract:

    The Defense Waste Processing Facility (DWPF) requested the Savannah River National Laboratory (SRNL) to develop tooling and equipment to remotely replace gaskets in mechanical Hanford connectors to reduce personnel radiation exposure as compared to the current hands-on method. It is also expected that radiation levels will continually increase with future waste streams. The equipment is operated in the Remote Equipment Decontamination Cell (REDC), which is equipped with compressed air, two master-slave manipulators (MSM's) and an electro-mechanical manipulator (EMM) arm for operation of the remote tools. The REDC does not provide access to electrical power, so the equipment must be manually or pneumatically operated. The MSM's have a load limit at full extension of ten pounds, which limited the weight of the installation tool. In order to remotely replace Hanford connector gaskets several operations must be performed remotely, these include: removal of the spent gasket and retaining Ring (retaining Ring is also called Snap Ring), loading the new Snap Ring and gasket into the installation tool and installation of the new gasket into the Hanford connector. SRNL developed and tested tools that successfully perform all of the necessary tasks. Removal of Snap Rings from horizontal and vertical connectors is performed by separate air actuated retaining Ring removal tools and is manipulated in the cell by the MSM. In order install a new gasket, the Snap Ring loader is used to load a new Snap Ring into a groove in the gasket installation tool. A new gasket is placed on the installation tool and retained by custom spRings. An MSM lifts the installation tool and presses the mounted gasket against the connector block. Once the installation tool is in position, the gasket and Snap Ring are installed onto the connector by pneumatic actuation. All of the tools are located on a custom work table with a pneumatic valve station that directs compressed air to the desired tool and vents the tools as needed. Extensive testing of tooling operation was performed in the DWPF manipulator repair shop. This testing allowed the operators to gain confidence before the equipment was exposed to radioactive contamination. The testing also led to multiple design improvements. On July 17 and 29, 2008 the Remote Gasket Replacement Tooling was successfully demonstrated in the REDC at the DWPF of The Savannah River Site

D Krementz - One of the best experts on this subject based on the ideXlab platform.

  • development of remote hanford connector gasket replacement tooling for the savannah river site s defense waste processing facility
    American Nuclear Society EP and R and R and RS, 2007
    Co-Authors: D Krementz
    Abstract:

    The Savannah River Site's (SRS) Defense Waste Processing Facility (DWPF) requested development of tooling for remote replacement of gaskets in mechanical Hanford connectors. The facility has compressed air supply, two master-slave manipulators (MSM's) and a lightweight robotic arm for operation of the remote tools. The Savannah River National Laboratory (SRNL) developed and tested multiple tools to perform the gasket replacement tasks. Separate pneumatic Snap-Ring removal tools that use the connector skirt as a reaction surface were developed for removal of the Snap Ring and spent gasket on both vertical and horizontal Hanford connectors. A pneumatic tool that clamps and centers on the jumper pipe ID was developed to simultaneously install the new gasket and Snap Ring. A pneumatic Snap-Ring-loading tool was developed that compresses the Snap Ring and places it in a groove in the installation tool. All of the tools are located on a custom work table with a pneumatic valve station that directs compressed air to the desired tool and vents the tools as needed. The entire system has been successfully tested using MSM's to manipulate the various tools. Deployment of the entire system is expected duRing FY08. The Hanford connector gasket replacement tooling has been successfully tested using MSM's to manipulate the various tools. Nitric acid is used in many of the decontamination processes performed in the REDC, where the tooling will be deployed. Although most of the tool components were fabricated/purchased with nitric acid and radioactive service in mind, some of the prototype parts must be replaced with parts that are more compatible with nitric acid/radioactive service. Several modifications to the various tools are needed to facilitate maintenance and replacement of failed components. Development of installation tools for replacement of 1-inch, 2-inch and multi-hole gaskets is being considered. Deployment of the existing system in the DWPF REDC is expected duRing FY08.

Krementz D. - One of the best experts on this subject based on the ideXlab platform.

  • DEVELOPMENT OF REMOTE HANFORD CONNECTOR GASKET REPLACEMENT TOOLING FOR DWPF
    Savannah River Site (S.C.), 2009
    Co-Authors: Krementz D., Coughlin Jeffrey
    Abstract:

    The Defense Waste Processing Facility (DWPF) requested the Savannah River National Laboratory (SRNL) to develop tooling and equipment to remotely replace gaskets in mechanical Hanford connectors to reduce personnel radiation exposure as compared to the current hands-on method. It is also expected that radiation levels will continually increase with future waste streams. The equipment is operated in the Remote Equipment Decontamination Cell (REDC), which is equipped with compressed air, two master-slave manipulators (MSM's) and an electro-mechanical manipulator (EMM) arm for operation of the remote tools. The REDC does not provide access to electrical power, so the equipment must be manually or pneumatically operated. The MSM's have a load limit at full extension of ten pounds, which limited the weight of the installation tool. In order to remotely replace Hanford connector gaskets several operations must be performed remotely, these include: removal of the spent gasket and retaining Ring (retaining Ring is also called Snap Ring), loading the new Snap Ring and gasket into the installation tool and installation of the new gasket into the Hanford connector. SRNL developed and tested tools that successfully perform all of the necessary tasks. Removal of Snap Rings from horizontal and vertical connectors is performed by separate air actuated retaining Ring removal tools and is manipulated in the cell by the MSM. In order install a new gasket, the Snap Ring loader is used to load a new Snap Ring into a groove in the gasket installation tool. A new gasket is placed on the installation tool and retained by custom spRings. An MSM lifts the installation tool and presses the mounted gasket against the connector block. Once the installation tool is in position, the gasket and Snap Ring are installed onto the connector by pneumatic actuation. All of the tools are located on a custom work table with a pneumatic valve station that directs compressed air to the desired tool and vents the tools as needed. Extensive testing of tooling operation was performed in the DWPF manipulator repair shop. This testing allowed the operators to gain confidence before the equipment was exposed to radioactive contamination. The testing also led to multiple design improvements. On July 17 and 29, 2008 the Remote Gasket Replacement Tooling was successfully demonstrated in the REDC at the DWPF of The Savannah River Site

Arringe C.n. - One of the best experts on this subject based on the ideXlab platform.

  • Gasket and Snap Ring installation tool
    Westinghouse Savannah River Company, 1993
    Co-Authors: Southerland J. M., Arringe C.n.
    Abstract:

    This invention is comprised of a tool for installing a gasket and a Snap Ring including a shaft, a first plate attached to the forward end of the shaft, a second plate slidably carried by the shaft, a spRing disposed about the shaft between the first and second plates, and a sleeve that is free to slide over the shaft and engage the second plate. The first plate has a loading surface with a loading groove for receiving a Snap Ring and a shoulder for holding a gasket. A plurality of openings are formed through the first plate, communicating with the loading groove and approximately equally spaced about the groove. A plurality of rods are attached to the second plate, each rod slidable in one of the openings. In use, the loaded tool is inserted into a hollow pipe or pipe fitting having an internal flange and an internal seating groove, such that the gasket is positioned against the flange and the Ring is in the approximate plane of the seating groove. The sleeve is pushed against the second plate, sliding the second plate towards the first plate, compressing the spRing and sliding the rods forwards in the openings. The rods engage the Snap Ring and urge the Ring from the loading groove into the seating groove

Qing Jian-don - One of the best experts on this subject based on the ideXlab platform.

  • The Design of Automatic Assembly Machine for Ball BeaRing Snap Ring
    Machinery Design and Manufacture, 2013
    Co-Authors: Qing Jian-don
    Abstract:

    Along with high speed development of national economy,beaRing is widely used in all fields,thus improving the efficiency of beaRing assembly,and the production line automation is the inevitable trend in the beaRing industry development.however,the assembly process of the current deep groove ball beaRing with outer diameter with Snap Ring,(gb suffix NR series) is generally in the manual or semi-automatic operation state in the whole industry,which makes the production flow speed is slow,production efficiency is low,the labor intensity is big,and the management cost is high,all of which make it difficult to meet the requirements of mass production and modern management.It designed and developed a ball beaRing Snap Ring automatic bounding machine,in order to meet the demand of the market.The design processes of automatic assembly machine for ball beaRing Snap Ring are introduced according to its working principle,and the working process of the key mechanisms designed are expounded in detail.In order to solve the problems in the overall equipment's debugging,some effective solutions were put forward here finally.