Page 32 - Trenchless Technology Piping Installation and Inspection

New Pipeline Installations 7

Primary Trenchless Possible Trenchless
Application Technology Methods Technology Methods a
Installation of a New Pipe
Gravity pipe (sanity Conventional pipe jacking Horizontal directional
and storm sewers) (CPJ), utility tunneling (UT), drilling (HDD)
microtunneling (MT)
Pressure pipes Horizontal directional Conventional pipe
(water, gas, and oil) drilling (HDD) jacking (CPJ), utility
tunneling (UT)
Road and railroad Horizontal auger boring Horizontal directional
crossings (HAB), pipe ramming (PR) drilling (HDD)
Cables and Mini horizontal directional Piercing method (PM)
telecommunications drilling (Mini-HDD)
Renewing an Existing Pipe
Gravity pipes (sanity Cured-in-place pipe (CIPP), Close-fit pipe (CFP)
and storm sewers) sliplining (SL), modified
sliplining (MSL)
Pressure pipes Close-fit pipe (CFP), Sliplining, coatings and
(water, gas, and oil) cured-in-place pipe (CIPP), linings (CL)
spray-in-place pipe (SIPP)
Culverts and Cured-in-place pipe (CIPP), Coatings and linings
drainage structures sliplining (SL), modified (CL)
sliplining (MSL)
Replacing an Existing Pipe
Pressure pipes Pipe bursting (PB), pipe Parallel pipeline using
(water, gas, and oil) reaming (PRM) horizontal directional
drilling (HDD)
Gravity sewer pipes Pipe bursting (PB), pipe Parallel pipeline using
(sanity and storm reaming (PRM) microtunneling or pilot
sewers) tube microtunneling
(PTMT)
Service laterals Pipe bursting (PB) Parallel pipeline
Culverts and Pipe bursting (PB), pipe Horizontal auger boring
drainage structures ramming (PR) (HAB), microtunneling
method (MTM)

a Application of these methods requires special tools or equipment, specialized contractor
and operator experience, improved construction practices, and/or may cost more than
the main methods. In some cases, the method might be new in the area of this applica-
tion, and capabilities of the method currently are not fully proven.

TABLE 1.2 Primary and Alternative Applications for Trenchless Technology
Methods