State of Technology Report for Force Main Rehabilitation, Final ...
State of Technology Report for Force Main Rehabilitation, Final ...
State of Technology Report for Force Main Rehabilitation, Final ...
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<strong>Technology</strong>/Method CIPP/Inversion with Hot Water Cured<br />
internal pressure equal to twice the known operating pressure, or operating<br />
pressure plus 50 psi, whichever is less. After stabilization period <strong>of</strong> 2-3<br />
hours, test period is one hour. Limit on make-up water to maintain pressure<br />
is 20 gallons per inch diameter per mile <strong>of</strong> pipe per day.<br />
IV. Operation and <strong>Main</strong>tenance Requirements<br />
O&M Needs Minimal. Inspect pipe in accordance with the owner’s asset management plan.<br />
Repair Requirements<br />
<strong>for</strong> Rehabilitated<br />
Sections<br />
Excavate, remove damaged portion <strong>of</strong> RPP and host pipe (if necessary), install<br />
end seals and bridge previously damaged location with new pipe and couplers as<br />
required.<br />
V. Costs<br />
Key Cost Factors By-pass requirements, host pipe cleaning, pipe diameter and length, tube<br />
thickness, number <strong>of</strong> appurtenances (valves, fittings, fire hydrants, air release<br />
valves, etc), excavation requirements. In order, most costly materials are resin,<br />
tube and end seals.<br />
Case Study Costs Not available.<br />
VI. Data Sources<br />
References www.insitu<strong>for</strong>m.com<br />
A-43
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