The Triton Lining Process

The Triton Lining Systems, LLC process involves 9 Key Steps:

1. Pipe Location / Access

Pipes and other utilities are located to determine excavation locations and requirements. When required, road cut permits must be obtained prior to construction.

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2. Bypass

If required, an above ground bypass sytem is installed to feed water to critical supplies
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3. Excavation

Wherever possible, excavations / access openings should be made at existing fittings (valves, tees, fire hydrants, bends etc.) Certain fittings should be removed prior to lining or removed and replaced after lining

4. Isolation

Isolation should only affect the pipes in the system identified for rehabilitation Whenever possible, valves should be checked for complete shut down prior to construction Installation of new valves may be required to permit isolation, prior to commencement of the project

 

 

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5. Cleaning

The two most popular methods used for cleaning pipes in place are:

  • Rack Feed Boring (3” – 8”) – with water
  • Drag Scraping (3” - >) – with or without water

Grit Blasting is also used on steel pipes

Certain projects may require a combination of cleaning processes

Whatever process is utilized, the end result should be the same. The interior surface of the host pipe must be clean,
dry and free from excess moisture, debris and contaminants

dragscraping

6. CCTV Inspection

The cleaned pipe is then cctv inspected

The purpose of the pre lining inspection is verify the effectiveness of the cleaning and identify any potential problems such as:

  • Unclean pipe
  • Unknown valves
  • Bends
  • Standing or running water (leaking services)
  • Over poured lead joints (lead fish)
  • Repair sections / clamps
  • Low service connections
  • Obstructions
cctv-inspection

7. Lining

A Lining rig is used to apply the epoxy lining to the inside diameter of the pipe. A plural component / umbilical hose is pulled from the lining rig through the pipe to be lined. Once the hose reaches the far end of the pipe run, the static mixer and application spray head are attached. The pumps are then turned on and the epoxy is centrifugally cast onto the pipe through the rotating spray head, as the hose is winched back through the pipe. Computerized metering and mixing equipment on the lining rig allow for precise control of the thickness of the epoxy lining. Following completion of the lining, the pipe is inspected at both ends and then sealed to allow the lining material to cure

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7. Post Lining Inspection

The cured lining is inspected via CCTV to ensure lining quality

8. Disinfection

Following acceptable CCTV inspection, if required the pipe should be disinfected / chlorinated in accordance with local and AWWA standards and requirements

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9. Re-Connection

Following disinfection, the lined pipe can be reconnected, couplings checked under pressure and returned to service.

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