The International Society for Trenchless Technology

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Renovation method which seals a length of pipeline between two access points by employing a chemical solution pumped into the pipe and surrounding ground. Such systems perform a variety of functions including ...
2. Cleaning Systems
(Glossary)
A system of centrifugal pumps, tanks with baffles, shakers screens, de-sanding and de-silting hydro cyclones for the removal of cuttings from the slurry for recycling and reuse.
... The term is usually employed where the pressure originates from the main jacking station in the drive shaft or to systems in which the primary counter-balance to the earth pressure is supplied by pressurised ...
4. Guided Auger Boring
(Glossary)
Method of auger boring in which the guidance mechanism actuator is sited in the drive shaft. The term may also be applied to those auger boring systems with rudimentary articulation of the casing near ...
5. Pilot Bore
(Glossary)
... systems  ...
6. Rehabilitation
(Glossary)
All measures for restoring or upgrading the performance of existing utility systems including renovation, replacement or repair to overcome problems related to any aspect of performance. ...
7. Replacement
(Glossary)
Construction of a new pipe or underground utility located on or off the line of the existing systems, which serves the same function as the old system. ...
8. Tracking
(Glossary)
... the surface, or by wireline or wireless non-walkover systems. ...
9. Vacuum Excavation Potholing
(Attached to Article: Vacuum Excavation Potholing)
Vacuum Excavation Potholing (Filename: vacuum-excavation-systems.pdf) | Description:Vacuum Excavation Potholing ...
10. Vacuum Excavation Systems
(Attached to Article: Potholing for Local Repair)
Vacuum Excavation Systems (Filename: vacuum-excavation-systems.pdf) | Description:Vacuum Excavation Systems ...
11. Vacuum Excavation Systems
(Attached to Article: Potholing)
Vacuum Excavation Systems (Filename: vacuum-excavation-systems.pdf) | Description:Vacuum Excavation Systems ...
12. Close-Fit Slip Lining
(News/Guidelines)
... The versatility of thermoplastic pipe has spawned the development of a wide range of innovative close-fit pipe lining systems.  These systems can be classified under one of two generic system types, ...
13. Vacuum Excavation Potholing
(News/Guidelines)
Vacuum excavation systems combine pressurized jetting and suction equipment to support a number of construction and trenchless applications. These systems come in a wide variety of sizes. They may be self ...
14. Pipe Extraction
(News/Guidelines)
...  There are several systems that have been developed to remove existing service lines while at the same time replacing them with a new pipe. Most all involve pulling out the existing pipe while simultaneously ...
15. Ground Pentrating Radar
(News/Guidelines)
There are a wide range of techniques available to locate buried pipes. Most of these systems use electromagnetic waves or signals transmitted into the ground or from underground utilities. These technologies ...
16. Leak Detection
(News/Guidelines)
... sounds picked up by sensors placed on two or more external points or appurtenances on the pipe. Two leak detection systems exist for locating leaks and gas pockets by deploying sensors within the pipe. ...
17. CCTV
(News/Guidelines)
... systems. The basic CCTV system includes the camera and transport, connecting cables, recording equipment, monitor, and software. The camera begins its survey with the distance counter set at zero corresponding ...
18. Localized Sealing
(News/Guidelines)
... which is cured at ambient temperature or by steam or UV light. Some localized seals may employ both retaining rings and curing to secure the seal. Joint seal systems come in a wide range of sizes for ...
19. Potholing
(News/Guidelines)
Vacuum excavation systems combine pressurized jetting and suction equipment to support a number of construction and trenchless applications. These systems come in a wide variety of sizes. They may be self ...
20. Potholing for Local Repair
(News/Guidelines)
Vacuum excavation systems combine pressurized jetting and suction equipment to support a number of construction and trenchless applications. These systems come in a wide variety of sizes. They may be self ...
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