Developing a Large-Diameter Sewer - pncwa

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Why Develop a Rehabilitation Program? • Avoid catastrophic failures/SSOs • Protect and extend the life of collection system infrastructure • Minimize cost of repairs/rehabilitation • Establish short- and long-term strategy for funding • Comply with regulations
Avoid Catastrophic Failures • Eliminate/Reduce SSOs • Reduce health/safety/environmental risks
Page 1 and 2: PNCWA 2010 Bend, Oregon Developing
Page 3: Clean Water Services
Page 7 and 8: Minimize the Cost of Repairs and Re
Page 9 and 10: Regulatory Compliance • CMOM lang
Page 11 and 12: 1. Perform Inspections • Purpose
Page 13 and 14: Inspection Frequency • Most utili
Page 15 and 16: What Technology Should Be Used to I
Page 17 and 18: Information Management • Goals:
Page 19 and 20: Purpose of Assessing Condition •
Page 21 and 22: Condition Grade Summary 60% Percent
Page 23 and 24: 3. Identify Rehabilitation Alternat
Page 25 and 26: Pipe Replacement • Rigid pipe mat
Page 27 and 28: Point Repairs • Dig and repair
Page 29 and 30: Summary of Technologies
Page 31 and 32: Purpose of Selecting a Preferred Al
Page 33 and 34: Field Investigations
Page 35 and 36: Permitting • Environmental permit
Page 37 and 38: 5. Assessing Risk • Purpose • P
Page 39 and 40: Probability of Failure • Structur
Page 41 and 42: Consequences of Failure • Depth r
Page 43 and 44: 6. Perform the Rehabilitation Proje
Page 45 and 46: Example Rehabilitation Report Produ
Page 47 and 48: Example Rehabilitation Report Produ
Page 49 and 50: Rehabilitation Report Summary • 2
Page 51 and 52: Questions? James Hansen, P.E. Brown
Page 53 and 54: Other Ways of Calculating Asset Ris

Developing a Large-Diameter Sewer - pncwa

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