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

Technology/Method Spray - on Lining/Polyurea
I. Technology Background
Status Emerging
Date of Introduction 3M Water Infrastructure just introduced Scotchkote Spray-In-Place Pipe (SIPP)
269 Coating at the ASCE Pipeline 2009 conference in San Diego. The original
formulation developed by E. Wood, known as Copon Hycote 169HB was a
polyurethane and not capable of meeting the NSF 61 standard, according to 3M
representatives.
Utilization Rates The original Copon Hycote 169HB is actively being used in the UK and Canada.
About 200 miles have been lined, bulk of which is in UK. The new Scotchkote
SIPP 269 has no known uses as of the time of this report.
Vendor Name(s) Scotchkote Spray-In-Place Pipe (SIPP) 269 Coating
3M Water Infrastructure
3M Center, Building 223-02-S-24
St. Paul, MN 55144-1000
Phone: 512-984-5515
Fax: 512-984-4871
Web: http://www.3m.com/water
Email: gsnatwig@mmm.com
Practitioner(s) Not available
Description of Main
Features
Scotchkote SIPP 269 is a two component coating specifically designed for use in
pipeline applications and is available as a grey finish. The material has low
viscosity characteristics for pumping to remote spray head locations and is
moisture tolerant to provide high build slump resistant coatings with strong
adhesion characteristics. The gel time at 68 o F is 120 seconds, cure time for CCTV
inspection is 10 minutes, and ready for return to service in 60 minutes. It is made
of 100% solids and has no VOCs. Based on the material properties, all of which
are short term values, this polyurea coating will primarily be suitable as an inner
corrosion barrier or a semi-structural (Class II) liner. The low elastic modulus
means the liner will act as an interactive liner and be dependent on the host pipe to
carry the internal pressure.
Main Benefits Claimed • Approved to NSF/ANSI Standard 61 as certified by WQA and NSF
• Contains no VOCs per EPA method 8260
• Quick cure allows CCTV inspection immediately after application (10
minutes)
• Same day return to service, bypass service not required.
• Can be applied to pipes 4 to 50 inches in diameter
• Typically will not plug service connections
Main Limitations Cited • Material property data is all based on short-term testing
• Material appears to be very flexible with low tensile strength, which will
Applicability
(Underline those that
apply)
limit its use for semi or fully structural rehabilitation.
Force Main Gravity Sewer Laterals Manholes Appurtenances
Water Main Service Lines Other: Oil, Gas and Industrial pipelines
II. Technology Parameters
Service Application Rehabilitation by spray lining
Service Connections Fully bonded along pipe thereby requires no secondary fittings
Structural Rating Claimed Tensile Strength: 16 MPa (2,320 psi)
Flexural Strength: 22 MPa (3,190 psi)
Flexural Modulus: 720 MPa (104,400 psi)
Materials of Composition Polyurea
• Base Component: White thixotropic liquid
• Activator Component: Black thixotropic liquid
• Mixed Material: Light Grey
Diameter Range, inches 4-50 inches
Thickness Range, inches • Film target thickness is 140 mils (3.5 mm).
• Practical applications of 120 to 200 mils are achieved.
A-4