Instructor

Dec Downey Ph.D. C.Eng
Dr. Downey is a Principal with the Jason Consultants group located in Washington, DC. He is responsible for the company’s activity in sewer and water mains rehabilitation and is presently engaged in a major sewer project in New Delhi, India and a water mains project in Hong Kong. Dr. Downey has over thirty years experience in pipe manufacture, installation and rehabilitation. Until 2002 he worked with the U.S. based global market leader in sewer rehabilitation and was responsible for marketing and management of their technologies in Europe and Asia. He is Past Chairman of the United Kingdom Society for Trenchless Technology; he is currently a Guarantor and a Member of the Executive Committee for the International Society for Trenchless Technology.

Dr. Downey has published some forty papers on pipeline rehabilitation and he serves on many industry committees including the European Streetworks Research Advisory Council. In 1992 he received the Kurose Award from the Japan Microtunneling Association for dedication to technology transfer.

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Course Description

The nation’s utility pipeline networks are aged and deteriorating, particularly in water and wastewater where municipalities are expected to spend $7.33 billion on new construction and $4.1 billion on rehabilitation in 2005. In these programs, cities will increasingly use trenchless methods, it is expected that 68 percent of sewer rehab and 30 percent of water mains rehab will use trenchless while 15 percent of new sewer and 21 percent of new water mains will also use trenchless methods. Even so almost 40 percent of cities have yet to use trenchless methods despite the intolerable disruption that open cut methods bring to the community.

This seminar will provide those who will face the challenge of reconstructing the nation’s essential infrastructure with a clear understanding of the technologies available to them, how and where these may be applied, and how to make decisions so that they are used effectively. The seminar will include a global perspective on the social impacts of urban infrastructure construction, state of the art inspection and assessment tools, new construction and rehabilitation methodology, specifications, design procedures and quality control measures.

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Seminar Benefits

• Gain a clear understanding of the key technical and economic issues in pipe replacement and rehabilitation
• Get a handle on the inspection and assessment procedures in popular usage
• Learn about the techniques available for repair, rehab and replacement with minimum disruption to your community; know their strengths and limitations
• Discuss your experience and perceptions of pipeline renewal with your instructor and fellow students
• Review key features of specifications, design codes and quality control procedures

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Who Should Attend

• City and Municipal Officials
• Utility authority engineers and managers
• Asset Planners
• Environmental Authorities
• Pipe Suppliers
• Utility Contractors

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Summary Outline

Day One

• Introduction
• Seminar Overview
• Introduction of Participants
• Determining Interests
• Review of Principal Networks – Water and Wastewater
• Materials
• Age Distribution
• Construction History
• State of the Networks
• Renovation Strategies
• International Comparisons
• Symptoms and Consequences of Deterioration
• Water Mains – Water Quality Issues, Pressure Reductions, Supply Interruptions, Leakage, Structural Failures
• Wastewater – Inflow and Infiltration, Exfiltration, Structural Failures, Flooding
• Inspection Methods
• Water – indirect methods, direct methods (destructive and non destructive)
• Sewer – indirect methods, man entry and non-man entry methods
• Evaluation of results and Defect Classification
• Assessment and Prioritization
• Rehabilitation method Selection Criteria
• Overview of Rehabilitation Options
• Definition of Terms
• Classification of Methods (Replacement,
  Renovation and Repair)
• Characteristics of Methods (non structural, interaction and stand alone)

Day Two

• Replacement Technologies
• Open Cut Construction
• Pipe Jacking and Microtunnelling
• Horizontal Directional Drilling
• Impact Moling and Pipe Ramming
• Sliplining
• Pipe Bursting and Splitting
• Renovation Technologies
• Cleaning
• Spray Lining
• Close Fit Lining
• Fold and Form Lining
• Cured in Place Lining
• Spiral Wound Lining
• Segment Lining
• End Sealing
• Lateral Reinstatement
• Flood Grouting
• Repair Technologies
• Joint Grouting
• Point Repair Methods
• Lateral Lining
• Manhole Repairs
• Design Basics
• Basic principles of design – not fully deteriorated, fully deteriorated
• Design of inserted pipes
• Design of liners
• Quality Control Measures
• Life Cycle Determination and Prediction
• Popular Specifications
• Social Cost Impacts and Considerations
• Direct Costs
  Indirect Costs
  Environmental Considerations
• Participation Session
• Case Studies
• Project presentation by participants and review
• Summary and Close

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