The International Society for Trenchless Technology

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Spray-on coating used primarily for corrosion protection of small diameter metal pipelines. Cement mortar and concrete linings can also provide structural and leak protection benefits in larger man-entry ...
Method of lining with a continuous pipe for which the cross section is reduced to facilitate installation, and reverted after installation to provide a close fit to the existing pipe. ...
3. Control Console
(Glossary)
... rate, machine face torque, slurry and feed pressures, and laser position is transmitted to the console from the head of the machine. The consoles may be equipped with a computer that provides real-time ...
4. Crossing
(Glossary)
Pipeline installation in which the primary purpose is to provide one or more passages beneath a surface obstruction. ...
Type of microtunnelling machine in which mechanical pressure is applied to the material at the face and controlled to provide the correct counter-balance to earth pressure to prevent heave or subsidence. ...
6. Fluid Assisted
(Glossary)
Method of guided drilling using a combination of mechanical drilling and Boring/Drilling pressurised fluid jets to provide the soil cutting action. ...
Instrumentation in a bore that provides continuous data simultaneously with drilling operations, usually transmitting to a display at or near the drilling rig. ...
8. New Installation
(Glossary)
Construction of a new pipe or underground utility to replace or upgrade an existing system or to provide new service. ...
9. Sonde
(Glossary)
Transmitter located near the front of an HDD drill string that sends an electronic signal that provides location and depth of the drill string near the bit. The sonde signal also transmits pitch, roll, ...
10. Pipe Jacking & Microtunneling
(News/Guidelines)
... as a remotely-controlled, guided, pipe-jacking operation that provides continuous support to the excavation face by applying mechanical or fluid pressure to balance groundwater and earth pressures. Support ...
11. Epoxy & Polyurethane Linings
(News/Guidelines)
Epoxy and polyurethane (PU) liners are used to provide corrosion protection in small diameter metallic pipelines and corrosion protection and semi-structural rehabilitation and leak protection in man-entry ...
12. Cement mortar Liner
(News/Guidelines)
Cement mortar linings (CML), like other spray-on coatings, are used primarily for corrosion protection of small diameter metal pipelines. Cement mortar and concrete linings can also provide structural ...
13. Polyurethane Lining
(News/Guidelines)
Epoxy and polyurethane (PU) liners are used to provide corrosion protection in small diameter metallic pipelines and corrosion protection and semi-structural rehabilitation and leak protection in man-entry ...
14. Pilot Tube
(News/Guidelines)
... screen. A camera mounted on a digital theodolite provides a real-time image of the LED target through the optical path in the hollow tubes. The operator controls the direction of the pilot tube by rotating ...
15. Leak Detection
(News/Guidelines)
... also travels with the product flow. These in-pipe systems provide an accurate location of leaks, since the sensor passes over the leak as it traverses the pipe. The in-pipe systems can be used in both ...
16. CCTV
(News/Guidelines)
... pipes (greater than 300 mm). Lighting must be evenly distributed around the surface of the pipe, should illuminate the pipe approximately 2 meters ahead of the camera, and should provide good contrast. ...
17. Join ISTT
(Uncategorised Content)
... membership annual dues are £70 ($115). ISTT members are entitled to access the services provided members on the ISTT website to include free downloads of technical papers and reports from the Technical ...
18. Programs and Activities
(Uncategorised Content)
... while supporting the education and training activities of Affiliated societies. More information on International NO-DIGS is provided on the dropdown – Annual International No-Digs. ISTT also offers ...
19. ISTT International NO-DIGS
(Uncategorised Content)
... provides No-Dig attendees an opportunity to see first-hand the latest the industry has to offer and to learn about the application and operations of wide variety of trenchless products and services directly ...
20. Research Support
(Uncategorised Content)
ISTT provides financial support to the Trenchless Technology Colloquium (Colloquium). The Colloquium is comprised of academics and researchers from Affiliated Societies, who meet annually to share research ...
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