Installation of a Cured-In-Place Pipe Liner is a Meticulously Planned - Well Choreographed Project
The key to successful cured-in-place pipe liner installations is project planning. The value of cured-in-place pipe lining is the minimal surface - social disruption, minimal inconvenience to property owners. JTV, Inc. plans all cured-in-place pipe liner installations to be completed within 18 hours or less.
Sanitary sewers with lateral connections play a major factor in determining installation schedules. The time required for lateral reinstatements determine the overall installation time and the time property owners are inconvenienced. Reducing property owners' inconvenience is a major concern of JTV, Inc.
Preparation Work Prior To A Cured-In-Place Pipe Liner Installation
Thoroughly clean pipe section to be lined removing all dirt, grease, scale & roots.
CCTV inspect line to confirm cleaning and check for structural pipe problems. If protruding laterals are discovered, use robot to cut / mill / grind lateral pipe to host pipe wall surface.
Obtain and confirm all measurements for each cured-in-place-pipe liner installation - without exception, all below measurements must be obtained from the work site.
Pipe diameter at each end of pipe - requires Confined Space Entry Permit and procedures
Upstream manhole depth - from manhole rim to invert
Downstream manhole depth - from manhole rim to invert
Confirm pipe length - surface measure
Confirm pipe length - CCTV camera measurement
Prepare an ASTM design calculation to determine required wall thickness of cured-in-place pipe liner for every individual cured-in-place pipe liner.
Order dry cured-in-place liner, resin & catalyst
Design & plan traffic control plan for liner installation site
Design & plan bypass pumping system for liner installation
Distribute door hangers / notifications to residents 48 hours before installation
Distribute door hangers / notifications to residents 24 hours before installation, second notice.
Prepare liner for installation, saturate cured-in-place pipe liner with catalyzed resin at dedicated wetout facility.
Installation Day For Cured-In-Place Pipe Liners - 18 Hours Or Less
Distribute door hangers, final notices to all affected properties not to use water until further notice.
Installation crew to hold "tool Box" meeting to discuss the days' work and prepare Confined Space Entry permits.
Setup traffic safety control as planned around work area, notify municipal authorities of road closures, detours and commencement of project work.
Set-up and test bypass pumping system.
High pressure sewer jet sewer pipe section(s) to be lined, minimum 2 passes.
CCTV inspect pipe section(s) to be lined, this will be saved as the pre-inspection video for future reference.
Confirm pipe diameter and length of pipe to be lined.
Setup required equipment for the cured-in-place pipe inversion installation.
Invert cured-in-place pipe liner into sewer pipe section(s).
Heat and circulate water within liner to cure thermosetting resin using boiler truck, hold at temperature until resin exotherm (per resin /catalyst manufacturer's specifications).
Add (to displace) & circulate cold water to gradually cool down liner (per resin /catalyst manufacturer's specifications).
Cut downstream liner end open to drain water and trim to end of pipe.
Cut upstream liner open and trim to end of pipe.
Inspect new liner for possible imperfections.
Setup robotic cutter to open lateral connections, rough cut
Advise property owners that water usage may resume.
Use robotic cutter fully open lateral connections, finish - brush cut.
Prepare final CCTV video inspection for submittal.
