Trenchless Technology for Sanitary and Storm Rehabilitation

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Trenchless Technology for Sanitary and Storm
Rehabilitation

• Presented by
• Jeff Beck, P.E.
• Insituform

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Trenchless Technology

• Cured in Place Pipe Rehabilitating Sanitary and
  Storm Sewers
• New CIPP innovations
• AISC Air Inversion Steam Cure
• iPlus Composite
• iPlus Infusion
• Green Initiative using Trenchless

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Global Infrastructure Crisis

• 2009 Report Card for Americas Infrastructure
  per ASCE
• Wastewater D
• Bridges C
• Investing in infrastructure, has proven to be
  beneficial in the past, with a 7 return for
  every 1 of investment
• Trenchless (no-dig) technologies are more
  cost-effective and less disruptive pipeline
  solutions to other traditional methods
• These technologies benefit the health of people
  and the economy

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Global Water Crisis

• The Clean Water Act was established 35 years ago
  to help prevent spills and environmental damage
• The EPA estimates there are more than 40,000
  sewer spills each year
• Sinkholes are becoming a more common occurrence
• Insituforms flagship cured-in-place pipe
  technology helps to address these and other
  problems

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Insituform History

• Insituform was established in 1971 with the
  invention of the cured-in-place pipe method of
  underground pipeline rehabilitation
• Developed by Eric Wood in the UK, the
  Insituform process was the first to
  rehabilitate underground pipelines without
  digging and disruption

Insituform working in Denver, Colorado
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What is CIPP?

• Developed in 1971, cured-in-place pipe (CIPP) is
  a trenchless technology developed by Insituform
• The end product is a jointless, seamless,
  pipe-within a pipe that protects against spills,
  breaks and pipeline leakage
• Insituform has installed over 15,000 miles of
  CIPP and has been the industry leader for over 35
  years

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Benefits

• Eliminate infiltration and exfiltration
• Restore structural integrity
• Prevent sinkholes and surface settlement
• Eliminate joints, root intrusion and leaks
• Increase flow capacity
• Protect pipes from corrosion
• Increase pipe strength
• Reduce maintenance
• Minimal traffic disruption
• Fewer social costs to open-cut
• Suitable for irregularly shaped pipes and
  changes in pipe diameter

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CIPP Installation

• Thermosetting resin is injected into a felt tube
• The tube is inserted into an existing host
  pipeline by either pull-in or inversion
• The tube is inflated to the size of the host pipe
  
• The CIPP tube is cured using hot water or steam
• Ends are cut and the final product is a
  fully-functional pipe-within-a-pipe

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CIPP Installation
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Why Trenchless?

• Trenchless technology is superior to dig and
  replace for a variety of reasons
• Cost-effectiveness
• Ease of Design
• Production rates
• Extends underground assets
• Benefits environment

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CIPP Affordability
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Open Cut Pricing
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Wet Out

• Insituform has seven wet out facilities
  strategically located throughout North America
• All facilities are ISO-certified and comply to
  industry safety standards
• Quality is constantly regulated and makes use
  of the most advanced wet out technologies

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Resin

• Resin - Once cured, thermosetting resin retains
  its shape with no residual memory.
• Resin types
• Polyester
• Vinyl Ester
• Epoxy
• Polyester resins are most used in gravity sewer
  rehabilitation due to their high flexural
  modulus, low tensile elongation and good chemical
  resistance.

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Design and Testing

• ASTM F1216
• ASTM F1743
• 100 Year Design Life
• Third Party Testing
• Test Results From Previous Installations

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CIPP Technical Envelope
Diameter Range 6 to 96 inches
pH Range .5 to 10.5
Effluent Temperature Up to 140
Fully Deteriorated Pipe Condition Yes
Partially Deteriorated Pipe Condition Yes
Bends Yes
Offset Joints Yes
Diameter Changes Yes, without manhole access
Thickness Changes Yes, without manhole access
Typical Shot Length 200 ft. to 1,000 ft.
Host Pipe Shape All Shapes
Host Pipe Material All Materials
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Air Inversion Steam Cure (AISC)

• Produces same high quality end product in
  shortened installation cycle
• Specialized installation equipment to minimize
  footprint at manhole
• Insituform material modified for steam cure
• Available for a variety of diameter pipe
• (8 72)
• Over 2 million feet installed using steam to date

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Air-Inversion Steam-Cure (AISC)

• High energy steam cure shortens installation
  cycle
• Off street installation made with little
  disruption
• Steam eliminates grade limitations
• Minimal water required for cure

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30 Sewer St. Louis MSD AISC
Before Lining
Post-Lining
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Innovative Technology
Insituform has developed new CIPP solutions for
trenchless construction
iPlus Composite Reinforced with carbon and glass
fibers, iPlus Composite cost-effectively provides
environmental benefits, increases flow rate,
minimizes disruption and won Innovative New
Product Award at No-Dig in 2007. iPlus Infusion
iPlus Infusion is Insituforms cured-in-place
pull-in and steam-cure method. It offers superior
physical properties, minimal disruption, and
environmental benefits for small diameter pipes.
iPlus Composite and iPlus Infusion
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iPlus Composite

• iPlus Composite is suitable for the
  rehabilitation of medium to large diameter
  pipelines
• Reinforced with carbon or glass fibers, it
  provides more strength and greater capacity
• Thinner walls less resin better for the
  environment

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iPlus Composite
CP installed into PVC host pipe
Close-up
Tight Fitting
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iPlus Composite
sewn-seam coating (PP)
Glass
Carbon
PVC
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iPlus Composite

• Sandwich technology
• High modulus (stiff) outer skins bonded to a
  core with lower material properties

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Completed iPlus Composite
30-inch iplus Composite installation at a
service location
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iPlus Infusion - ASTM 1743

• Small installation footprint minimizes disruption
• Ideal for small backyard easements
• 700 ft installations
• Boiler truck can be located 250 ft from MH

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iPlus Infusion

• Shorter cycle time
• Smaller footprint
• Shorter sewer outage
• Reduced equipment on street
• Minimal traffic disruption
• Greater installation flexibility

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iPlus Infusion Installation

• Step One Tubes wet-out using controlled resin
  impregnation system
• Step Two A resin-saturated tube is pulled into
  damaged pipe

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iPlus Infusion Installation

• Step Three Air is used to inflate the tube and
  steam is used to cure the resin
• Step Four Service laterals are restored
  internally

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Steam Cure

• 50 reduction in energy usage and 98 reduction
  in water usage over traditional water
  inversion/hot water cure
• Virtually eliminates discharge of process water
  into sewers
• No grade limitations
• Shorter cool down allows lateral reinstatement to
  take place sooner

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Reduced Equipment Requirements

• Smallest jobsite footprint of any CIPP process
• Portable equipment
• Ideal for off-road installations
• Minimal traffic disruption
• Reduces stress on tube
• Shot lengths up to 230m
• Meets or exceeds the physical properties set
  forth in ASTM F1743

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Technical Envelope Infusion
Diameter Range 4 inch 12 inch
pH Range .5 10.5
Effluent Temperature Up to 140 F
Fully Deteriorated Yes
Partially Deteriorated Yes
Bends No
Offset Joints Yes
Shot Length Up to 750 feet
Host Pipe Material All, except truss
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Environmental Benefits

• Insituform uses air and steam energy where
  applicable
• Cuts down water use by 95
• Tube can be made from up to 98 recycled material
• iPlus Composite and other technologies cut down
  on need for resin and other petroleum-based
  products
• CIPP rehabilitation can prevent sewer spills, oil
  spills and water main breaks

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• Questions?