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Watermain Rehabilitation Eliminating the need for temporary bypass

Watermain Rehabilitation Eliminating the need for temporary bypass. Derrick Horsman, P.Eng. Alltech Solutions INC. Overview. Watermain problems and issues Spray Lining Overview Same Day Return to Service ?. Eliminating Temporary Bypass. The Problem:

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Watermain Rehabilitation Eliminating the need for temporary bypass

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  1. Watermain RehabilitationEliminating the need for temporary bypass Derrick Horsman, P.Eng. Alltech Solutions INC

  2. Overview • Watermain problems and issues • Spray Lining Overview • Same Day Return to Service ? Eliminating Temporary Bypass

  3. The Problem: Despite recent increases in public infrastructure investments, municipal infrastructure is decaying faster than it is being renewed.1 1 National Guide to Sustainable Municipal Infrastructure. Eliminating Temporary Bypass

  4. The Cause: Internal (External) corrosion Watermain breaks Pipe surpassed useful life Eliminating Temporary Bypass

  5. High Rate of Leakage Inadequate Fire Protection Eliminating Temporary Bypass

  6. Eliminating Temporary Bypass

  7. Eliminating Temporary Bypass

  8. What do we do? Eliminating Temporary Bypass

  9. Conventional open cut replacement • Low dig options • Directional drilling • Sliplining • Pipebursting • CIPP lining • Traditional Cleaning and Spray Lining • Cement lining process • Epoxy lining process • Modern Cleaning and Spray Lining • Rapid cure polyurethane system • Rapid cure high build system Eliminating Temporary Bypass

  10. Spray Lining • TRADITIONAL CLEANING AND SPRAY LINING • Cement Lining process • Epoxy Lining process • Less expensive • No reduction in flow capacity • No requirement to re-tap services • Some disruption • Not suitable for certain water types • Superseded in Europe by polyurethane lining systems. • Requires above ground temporary water supply $$$$$$$ ?? Eliminating Temporary Bypass

  11. Spray Lining TRADITIONAL CLEANING AND CEMENT LINING Eliminating Temporary Bypass

  12. Eliminating Temporary Bypass

  13. Eliminating Temporary Bypass

  14. Spray Lining MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Eliminating Temporary Bypass

  15. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • Only approved rapid cure material <15 sec • Potential for contamination effectively eliminated • No leaching • Immediate rectification of lining faults Eliminating Temporary Bypass

  16. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • No requirement for above ground bypass • Improved customer services; multi-stage notification process • Operations carried out during working hours • Removes potential hazards (ie. Tripping hazards, random breaks, security issues) Eliminating Temporary Bypass

  17. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • No requirement for above ground bypass • Substantially less expensive • - cost of bypass 20-45% of total job (Awwarf) • Cost of temporary resources reduced • Shorter construction duration Eliminating Temporary Bypass

  18. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • No requirement for above ground bypass • Substantially less expensive • Greatly reduced disruption • Minimal setup time • Rapid road reinstatement • Small job site footprint Eliminating Temporary Bypass

  19. Spray Lining Eliminating Temporary Bypass

  20. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • No requirement for above ground bypass • Substantially less expensive • Greatly reduced disruption • Some revaluation of capital asset? • No reduction in flow capacity • Application of 1mm – 5mm Eliminating Temporary Bypass

  21. Spray Lining • MODERN CLEANING AND SPRAY LINING • Rapid Cure Polyurethane system • Rapid Cure High Build system • Same day return to service • No requirement for above ground bypass • Substantially less expensive • Greatly reduced disruption • Some revaluation of capital asset? • No reduction in flow capacity • No requirement to re-tap services Eliminating Temporary Bypass

  22. Spray Lining High Build Structural System Performance Requirements for Lining Material • Tough enough to survive dynamic loading at failure • Ductile enough to accommodate movement after failure • Sufficient shear strength to maintain longitudinal continuity • Sufficient flexural strength to provide long term corrosion void spanning capability Eliminating Temporary Bypass

  23. Spray Lining High Build Structural System 1 Bar = 14.5 psi @3mm 145psi @5mm 348 psi Eliminating Temporary Bypass

  24. Spray Lining – Rapid Cure Polyurethane • Rapid Cure Polyurethane North American Experience • City of Saint John, NB • City of Moncton, NB • Atlantic Health Sciences Corporation, Saint John, NB • Millstone Nuclear Power Plant, Niantic, CT, USA • Region of Niagara, ON • New York Department of Environmental Protection • Rapid Cure Polyurethane International Experience • United Kingdom, Russia, India, Switzerland and Malaysia • More than 8,000 km in the UK by our partner affiliates Eliminating Temporary Bypass

  25. QUESTIONS ??? Eliminating Temporary Bypass

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