Sealing Large-Diameter Cast-Iron Pipe Joints Under Live Conditions Page: 4 of 73
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Access holes in older cast-iron pipes are expected to be cut in approximately 30
minutes due to better machinability of cast iron.
5. Conducting full-up tests of the system in the shop, including cutting multiple access
holes through the bolt-on fitting and setting several patches across joints in the test
6. Implementing software controls and system displays into the LabVIEW user-
interface/robotics-control environment. The LabVIEW environment is used to control
all aspects of the robot operation including camera pan, zoom, tilt, lighting, cleaning
motor operation, patch setting, etc.
7. Collecting additional information and data to conduct a benefit analysis. A practical
cost/benefit analysis will be completed under the future field tests to be conducted
with a large gas distribution company located in the Northeast United States. This
company has agreed to perform a direct cost comparison of external joint
encapsulation, internal spraying with an anaerobic sealant and the robotically set
8. Planning a field test demonstration of the large-diameter robotic system currently
scheduled for second quarter 2006 (after the end of the current heating season).
Several discussions between GTI, MTI, Public Service Electric & Gas Company, and
other utilities have been conducted for scheduling field tests. A Master Service
Agreement has already been signed to allow this work to be conducted.
9. Preparing a Final Report that documents all project activities during this phase of the
Gas Technology Institute
Maurer Technology Inc.
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Kothari, Kiran M. & PIttard, Gerard T. Sealing Large-Diameter Cast-Iron Pipe Joints Under Live Conditions, report, December 1, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc886446/m1/4/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.