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/Pull in Place/UV Cured<br />
Claimed (500MM), liner suitable <strong>for</strong> fully deteriorated gravity host pipe.<br />
Materials <strong>of</strong> The Berolina-Liner is made <strong>of</strong> up to 5 layers <strong>of</strong> glass-fiber and/or polyester web<br />
Composition that is impregnated with a UV-light curing polyester resin. BKP uses only ISO<br />
NPG resin <strong>of</strong> the type 1140 according to DIN 16946/2. The resin is qualified <strong>for</strong><br />
Group 3 in accordance to DIN 18820/1. For demanding requirements, a vinylester<br />
resin is used. The inner protective film and outer UV resistant film are flexible,<br />
water impenetrable and equipped with a styrene barrier. Minimum initial ring<br />
flexural modulus claimed is 1.45 x 10 6 psi, and the approximate initial tensile<br />
modulus 2.03 x 10 6 psi.<br />
Diameter Range,<br />
inches<br />
6-40 inches (other sizes available upon request)<br />
Thickness Range,<br />
inches<br />
0.08-0.47 inches (2-12 mm), depending on diameter<br />
Pressure Capacity, New Berolina-LP-Liner (low pressure) currently in test phase with pressure<br />
psi<br />
capacity up to 45 psi.<br />
Temperature Range,<br />
o<br />
F<br />
Polyester resin up to 122°F; Vinylester resin up to 158°F<br />
Renewal Length, feet 1,200 feet (400 m)<br />
Other Notes Licensed CIPP Corp (Hudson, IA) to be sole nationwide US provider in Nov.<br />
2008.<br />
Local contractors acceptable<br />
III. <strong>Technology</strong> Design, Installation, and QA/QC In<strong>for</strong>mation<br />
Product Standards According to EN 13566-4/DRAFT INTERNATIONAL STANDARD ISO/DIS<br />
11296-4; ASTM not applicable, new ASTM standard in preparation<br />
Design Standards ATV-M 127-2; ASTM F1216, Appendix X.1<br />
Design Life Range Minimum 50 years<br />
Installation<br />
Standards<br />
New ASTM standard in preparation; WRc certified installation manual available<br />
Installation<br />
• The host pipe is first thoroughly cleaned and CCTV inspected. A protective<br />
Methodology<br />
film sleeve, covering the lower half <strong>of</strong> the host pipe, is next drawn into the<br />
pipe to be rehabilitated by a winch. The Berolina-Liner is then winched into<br />
place and both ends are closed <strong>of</strong>f with end cans. The tube is calibrated<br />
using compressed air (7.5 psig), which presses the liner against the host<br />
pipe’s inner wall.<br />
• The outer UV resistant tube prevents migration <strong>of</strong> the resin and styrene into<br />
the soil and groundwater, and also prevents resin from penetrating the<br />
laterals.<br />
• After expansion <strong>of</strong> the liner, a special UV light is “fired” and pulled through<br />
the liner at a defined speed. A CCTV camera can monitor the liner during<br />
the passage <strong>of</strong> the light train.<br />
• With the tube ends sealed, the curing occurs free <strong>of</strong> any emissions.<br />
• After curing, the inner film is removed leaving a smooth inner surface.<br />
• Laterals are easily identified (outward expansion <strong>of</strong> liner) and reinstated<br />
using conventional robotic cutters.<br />
QA/QC BKP controls the quality <strong>of</strong> the liner with testing <strong>of</strong> the liner and components at<br />
their plant, as well as during and after curing in the field.<br />
Qualification testing <strong>of</strong> the liner has included:<br />
• high pressure water jet cleaning (Hamburg Model) – 60 passes<br />
• 10,000 hrs fatigue (creep) tests<br />
• leakage tests (CP308)(water impermeability)<br />
• Darmstadt tilted drain experiment (abrasion test)<br />
• burning test<br />
The more important QA (factory) requirements are:<br />
• reactivity tests <strong>of</strong> resin<br />
• impermeability tests (DIN/EN 1610)<br />
• wall thickness measurement<br />
A-47