The International Society for Trenchless Technology

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Total: 9 results found.

1. Dry Bore
(Glossary)
Method of creating a bore without the use of a drilling fluid. Usually associated with guided impact moling, but may also apply to some rotary methods. ...
2. Hydrolock
(Glossary)
A phenomenon that occurs when circulation is lost creating a hydraulic cylinder in front of a reamer with holding pressure greater than the pullback capacity of the drill rig. ...
3. Impact Moling
(Glossary)
Method of creating a bore using a pneumatic or hydraulic hammer within a casing, generally of torpedo shape. The term is usually associated with non-steered or limited steering devices that rely upon the ...
4. Launch Seal
(Glossary)
A mechanical seal, usually composed of a rubber flange that is mounted to the wall of the drive shaft. The flange seal is distended by the MTBM as it passes through, creating a seal to prevent water or ...
5. Pipe Bursting
(News/Guidelines)
... through the host pipe, the fragments are pushed into the resulting annulus, creating a cavity for the product pipe.  The product pipe immediately follows the bursting head as it is simultaneously ...
6. Pipe Splitting
(News/Guidelines)
... through the host pipe, the fragments are pushed into the resulting annulus, creating a cavity for the product pipe.  The product pipe immediately follows the bursting head as it is simultaneously ...
7. Ground Pentrating Radar
(News/Guidelines)
... transmitted waves reflected off buried objects, the boundaries between different soils, and other subsurface discontinuities are captured by the GPR radio antenna. These data are process against time creating ...
8. Programs and Activities
(Uncategorised Content)
... it might not be fully understood or appreciated, and can serve as a stimulus to creating trenchless opportunities and markets. More information on Specialized Training is provided on the dropdown – Specialized ...
9. The History of the ISTT
(Uncategorised Content)
... and others the ISTT may never have come into being - or at least not as soon as it did. Noted above are just a few of the key people who had a hand in creating the ISTT twenty years ago when trenchless ...

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