Rehabilitation of Forced Sewer Mains with CIPP

Transcription

1 Rehabilitation of Forced Sewer Mains with CIPP May 2018 William Wong Presentation outline Introduction to Aegion Case Study Problem InsituMain CIPP Solution Introduction to Aegion Introduction to Aegion AEGION CORPORATION MISSION: Aegion keeps infrastructure working better, safer and longer for customers throughout the world. Aegion combines innovative technologies with market-leading expertise to maintain, rehabilitate and strengthen infrastructure around the world. Since 1971, we have played a pioneering role in finding transformational solutions to rehabilitate aging infrastructure, primarily pipelines in the wastewater, water, energy, mining and refining industries. Aegion also maintains the efficient operation of refineries and other industrial facilities. Expanding our capabilities through acquisition, we provide our clients in a range of markets with services that protect and renew, ensuring Stronger. Safer. Infrastructure. Markets We Serve ZERO INCIDENTS ARE POSSIBLE. Every Aegion employee is expected to deliver best-in-class safety performance at all times. DO WHAT'S RIGHT. Honesty, integrity and respect guide our decision-making, our actions and our relationships with our customers, stockholders, colleagues and communities. WE SOLVE PROBLEMS. We support our customers success by understanding better than anyone how to identify and solve problems. RESULTS MATTER. We own the consequences of our actions and realize we are ultimately accountable to our customers and stockholders. Municipal Oil & Gas Industrial Mining Structures BE BETTER. We never settle for the status quo and strive each day to do better and to be better. 1

2 Aegion corporate history Aegion business platforms Insituform background Manufactured Technologies Corporation (MTC) Insituform invented and installed the first ever CIPP in the UK in 1971 In the 1980s, the business grew through a licensee network In the 1990s, CIPP for pressure pipes was developed Since 2015, the Asia operation was restructured to focus on tube supply through MTC MTC provides CIPP tube to customers around the globe. MTC provides cured-in-place pipe tube in a variety of small and large diameters. MTC was formed in 2005 to provide an affordable, high-quality CIPP product to the marketplace. MTC is backed by over 45 years of expertise and the latest manufacturing techniques. 2

3 Hong Kong Densely populated city Mountainous region HK Sevens Flat areas in the New Territories Wetlands, low lying regions DN900 Sewer Pumping Main along Lung Mun Road, Tuen Mun Concentration of gas near the pumping stations Heavy deterioration to pipes and values due to Sulphide corrosion Mountains Forced Sewer Mains Utilizes numerous forced sewer mains to transport wastewater to treatment facilities around the territory InsituMain CIPP CIPP construction InsituMain CIPP Fully structural AWWA Class IV Totally independent of failing host pipe DN150 up to DN1800 diameter Coated Felt PP coating generally Water contact surface Coating also provides water, air and steam barrier for installation processes Maximum allowable pressure rating of 150 psi Bends up to 45 degrees Industry standard internal & external fittings 3

4 CIPP Construction CIPP Construction Resin / Polyester Felt Resin / Fiber Structure Felt saturated in resin Vinyl / epoxy Provides for external load capacity Layer thickness can be varied on design & loading conditions Fiber saturated in resin Glass Provides for high-tensile strength Number of layers can be varied on diameter & internal pressure CIPP Construction Approvals NSF Approval Kiwa Approval 4

5 InsituMain CIPP Fittings used for CIPP Terminations Internal pressure standalone design of up to 250 psi Hydrostatic burst tested up to 1300 psi Custom designs possible Hymax (DN150 to DN1200) Does not use existing deteriorated host pipe Internal End Seal Insituform s oldest end seal technology Miller, Victaulic, Weco, Amex internal end seals Installation Process Case Study Procedure for Rehabilitation Excavate access To rehabilitate the forced sewer main, the identified pipe was divided into 3 sections Section 3 Temporary service Clean/CCTV Wet out liner Section 2 Section 1 Invert liner / cure / cool down Pressure test Section 1 Section 2 Section m 250 m 220 m 5

6 CIPP installation preparation CIPP installation preparation Pipeline can be cleaned using Drag scrapers High-pressure water jetting Pigs Other similar equipment, as needed High-pressure water jetting Pigging CIPP installation preparation Pipeline is inspected by CCTV before lining Example of Pit Wetout Preparation of the pipe is completed prior to the mixing of resin 6

7 Section Section Section Post Rehabilitation CCTV Case Study InsituMain CIPP technical envelope InsituMain CIPP Diameter Range 6 to 96 inches AFTER Effluent Temperature Up to 120 F Internal Pressure Capability 250 psi Bends Up to 45 END SEAL Host Pipe Material Mechanical Properties All materials Exceeds ASTM F1216 and ASTM F1743 7

8 Questions Thank you. William Wong