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