State of Technology Report for Force Main Rehabilitation, Final ...

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Technology/Method CIPP/ Inversion and Hot Water or Steam Cured Thickness Range, inches 0.18 inches (4.5 mm) to 2.07 inches (52.5 mm) Pressure Capacity, psi 230 psi Burst Pressure (Based on 8 inches dia. x 6 mm thick) Temperature Range, o F 220 o F Renewal Length, feet Approx. 1,000 feet depending on diameter Other Notes Include specific notes here such as Water Quality, I/I control, other Product Standards III. Technology Design, Installation, and QA/QC Information No product standards, NSF 61 listing (for potable water applications) from Underwriters Laboratories Design Standards ASTM F1216, Appendix X.1 Design Life Range 50 years Installation Standards ASTM F1216, Section 7 and/or ASTM F1743, Section 6 Installation • The main is first CCTV inspected and cleaned. Methodology • The installation contractor impregnates the tube with the NOVOC vinyl ester resin. The liner is then inserted into the main either by direct inversion using water head or pulled in by a winch. The use of a lubricant is recommended. The liner can be installed through a 45 o elbow. The pressure head or steam/air pressure needs to fall within NOVOC’s recommended guidelines to insure a proper finished thickness and that the liner fits snug to the existing pipe wall, producing dimples at service connections and flared ends at the entrance and exit points. • After inflation, the liner is cured using either circulating hot water or steam. Thermocouples are placed between the liner and the invert of the manhole or end of the host pipe and used to monitor the temperature and time of the exothermic reaction. • Once cured, the liner is cooled down to a temperature of 100 o F before relieving the pressure. • The liner is cut to appropriate length to allow fitting of end seals (Miller Pipe “Weko-Seals” or equal) or Full-Circle Pressure Clamps or MJ Fittings. QA/QC CCTV main after cleaning, log location of service connections. Likewise, CCTV line after temperature cools to under 100 o F to make sure liner was properly installed. Pressure test the line after CCTV inspection, and before reinstating connections, to a minimum of 120% of the normal operating pressure. Line to be CCTV inspected again after service connections are reinstated. IV. Operation and Maintenance Requirements O&M Needs None identified. Repair Requirements for Rehabilitated Sections Paraliner products can be relined and or point repaired. V. Costs Key Cost Factors • To determine whether or not a CIPP application is more cost-effective than other alternatives such as slip-lining or dig-and-replace • If there are environmental sensitivities • Determining the reduction of flow capacity vs. other alternatives • The structural integrity of the existing host pipe • Service downtime Case Study Costs No cost case studies available. VI. Data Sources References References upon request A-40
Technology/Method CIPP/Inversion with Hot Water Cured I. Technology Background Status Emerging Date of Introduction 1998 Utilization Rates 19 miles since 1998 Vendor Name(s) Insituform RPP (Reinforced Pressure Pipe) Insituform Technologies, Inc. 17999 Edison Ave. Chesterfield, MO 63005 Phone: 636-530-8000 Fax: 636-519- 8744 Web: www.insituform.com Practitioner(s) 1) Zone 7 Water Agency- Alameda County Flood Control and Water Conservation District 5,400 feet of 12 inches RPP on an old cast iron pipe - December 2008 Key Contact: Steven J. Ellis Assistant Engineer Zone 7 Water Agency 100 North Canyons Parkway Livermore, CA 945541 925-454-5037 (direct) 925-454-5726 (fax) sellis@zone7water.com Description of Main Features 2) City of Muscatine, IA Sewer force main – 1,700 feet of 24 inches - December 2007 Key Contact: Gary Kleve Sulzberger Excavating 563-263-1697 3) Gainesville Regional Utilities Sewer force main – 330 feet of 16 inches - 2007 Key Contact: John Gifford Gainesville Regional Utilities 352-317-1837 Insituform RPP is a custom engineered CIPP product designed to restore the structural integrity to distressed pressure pipes and prevent internal corrosion and/or erosion. It is a structural renewal product that does not rely upon the host pipe. The CIPP tube has a similar construction to standard Insituform CIPP tubes, with special glass reinforcement included to handle pressure applications. Resin used is vinyl ester. Main Benefits • Provides a structural renewal. Claimed • Spans over small holes, gaps or open joints. • Extends life of a deteriorated or leaking pressure pipe. • Minimal disruption as installed inside existing main, trenchlessly. • Smooth interior surface. • Stops internal corrosion. Main Limitations Cited Applicability (Underline those that • Can be installed in line with bends up to 45 o . • Interior must be very clean, with no protrusions. • Shut down system or by-pass pump during insertion and cure. • Incomplete long-term pressure regression tests on cured RPP liner available for confirmation of design values recommended for long-term tensile strength in pressure design (Did not achieve the correct number of bursts during the log time frames to meet the ASTM data requirement). Force Main Gravity Sewer Laterals Manholes Appurtenances Water Main Service Lines Other: Industrial Pressure A-41
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EPA/600/R-10/044| March 2010 | www.
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DISCLAIMER The work reported in thi
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Introduction EXECUTIVE SUMMARY Forc
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The use of close-fit liners is ofte
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A whole host of ASTM specifications
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CONTENTS DISCLAIMER ...............
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6.0: OPERATION AND MAINTENANCE.....
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DEFINITIONS Cured-in-place pipe (CI
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3-D three-dimensional AASHTO ACP AR
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UV ultraviolet WERF Water Environme
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wastewater conveyance systems (EPA,
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• Section 8: Findings and Recomme
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Figure 2-2. Diameter Distribution o
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Figure 2-4. Location of Force Mains
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Proper inspection of force mains wo
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0.03% of the overall length. There
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Table 3-1. Summary of Renewal Techn
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3.3.3 Joint Repair 3.3.3.1 Internal
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more appropriate to a water main wh
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are, however, several communities (
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Table 3-3. Properties of Hunting Po
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3.4.3.1 Symmetrical Reduction Close
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Rolldown Rolldown was developed in
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Subline Subline, offered by Subterr
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On-Site Expandable PVC Close-Fit Li
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3.4.4.2 Semi-Structural CIPP Liners
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inch (150 mm) liner down to 60 psi
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3.4.5.1 Adhesive-Backed Woven Hose
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US. Primus Line is a seamless, wove
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Figure 3-21. Summary of Replacement
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favorable to stringing out a long l
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3.5.1.3 Pipe Slitting. Pipe slittin
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4.1 4.0 TECHNOLOGY SELECTION CONSID
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head loss to maintain flow capacity
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ferrous main, this can be an intern
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5.0 DESIGN AND QA/QC This section w
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thickness? It can still support the
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pipe’s design life. Once again, i
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ASTM F1533 The renewal process invo
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AWWA M55 PE Pipe - Design and Insta
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Most of the controversy over the ap
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up to each individual manufacturer.
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For pressure applications, a hydros
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Dimensional checks on the pipe diam
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5.6.2.3 CIPP Long-Term QA/QC Requir
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Figure 6-1. Polyurethane Pipeline C
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in currents or potentials indicate
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Page 97 and 98: 7.0 GAPS BETWEEN NEEDS AND AVAILABL
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Page 105 and 106: 9.0 REFERENCES Aggarwal, S.C. and M
Page 107 and 108: Technology/Method Spray - On Lining
Page 109 and 110: Technology/Method Spray - On Lining
Page 111 and 112: Technology/Method Spray - on Lining
Page 113 and 114: Technology/Method Close Fit/Tension
Page 115 and 116: Technology/Method Close Fit PE/Symm
Page 117 and 118: Technology/Method Symmetrical Reduc
Page 119 and 120: Technology/Method Rolldown/Close Fi
Page 121 and 122: Technology/Method Subcoil/Close Fit
Page 123 and 124: Technology/Method PE Liner/ Cement
Page 125 and 126: Technology/Method Subline/Close Fit
Page 127 and 128: Technology/Method Fold and Form PE
Page 129 and 130: Technology/Method Fold -and - Form/
Page 131 and 132: Technology/Method Fold -and - Form/
Page 133 and 134: Technology/Method Fold -and - Form
Page 135 and 136: Technology/Method Fold -and - Form
Page 137 and 138: Technology/Method Close - Fit Linin
Page 139 and 140: Technology/Method CIPP/Pull In Plac
Page 141 and 142: Technology/Method CIPP/Inversion wi
Page 143 and 144: Technology/Method CIPP/Direct Inver
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Page 149 and 150: Technology/Method CIPP/Inversion wi
Page 151 and 152: Technology/Method CIPP/Glass Fiber
Page 153 and 154: Technology/Method CIPP/Pull in Plac
Page 155 and 156: Technology/Method CIPP/UV Light Cur
Page 157 and 158: Technology/Method CIPP/Glass Reinfo
Page 159 and 160: Technology/Method CIPP with Carbon
Page 165 and 166: for Rehabilitated Sections V. Costs
Page 167 and 168: Technology/Method Woven Hose Lining
Page 169 and 170: Technology/Method Saertex - Liner®
Page 171 and 172: Technology/Method Hose Liner/Pulled
Page 173 and 174: Technology/Method Glass Reinforced
Page 175: Technology/Method Sliplining/HDD/Pi
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