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PRESENTATION FOR CWEA TRAINING Keys to Successful Pipeline/Infrastructure Projects

PRESENTATION FOR CWEA TRAINING Keys to Successful Pipeline/Infrastructure Projects. Pipeline Flow Diversion. Presented by: Tom Epperson, PE, Tetra Tech. Keys to Successful Pipeline/Infrastructure Projects. Pipeline Flow Diversion. Tom Epperson, PE, Tetra Tech.

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PRESENTATION FOR CWEA TRAINING Keys to Successful Pipeline/Infrastructure Projects

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  1. PRESENTATION FOR CWEA TRAININGKeys to Successful Pipeline/Infrastructure Projects Pipeline Flow Diversion Presented by: Tom Epperson, PE, Tetra Tech

  2. Keys to Successful Pipeline/Infrastructure Projects Pipeline Flow Diversion Tom Epperson, PE, Tetra Tech

  3. Maintaining Sewage Flow During Construction • Connections to Existing Sewer • Manhole Connections or Rehab Work • Rehabilitation – Bypass Pumping

  4. Connection to Existing Sewer – Maintain Sewage Flow • Construct New MH over Existing Pipe • Keep Flow within Pipe • Modify Channel/Base • Cut and Remove Top of Existing Pipe

  5. Connection to Existing Sewer – Maintain Sewage Flow • Existing Sewer Pipe

  6. Connection to Existing Sewer – Maintain Sewage Flow • Existing Sewer Pipe • Add Manhole Base& Shaft

  7. Connection to Existing Sewer – Maintain Sewage Flow • Existing Sewer Pipe • Add Manhole Base& Shaft • Modify Channel &Side Pipe

  8. Connection to Existing Sewer – Maintain Sewage Flow • Existing Sewer Pipe • Add Manhole Base& Shaft • Modify Channel &Side Pipe • Cut & Remove Topof Pipe

  9. Manhole Connections or Rehab Work

  10. Manhole Connections or Rehab Work Key Issues: • MH Access (cover size) • Confined Space Entry • Sizing of Flow-thru Tubes • Confirmation of Back-up

  11. Manhole Work Flow-thru Tubing

  12. Manhole Work Flow-thru Tubing

  13. Rehabilitation – Bypass Pumping Key: No Sewer Spills

  14. Key Elements of Bypass Plan • Bypass Pumps • Bypass Piping • Redundancy • Spill Prevention & Response Plan • Noise Monitoring • Odor Monitoring • Monitoring Systems

  15. Bypass Pumps • Capacity – Typical Sewage Flow & Peak Flow Rate • Suction Supply • Pumping Equipment (submersible, self-priming centrifugal) • Valving

  16. Capacity – Typical Sewage Flow & Peak Flow Rate Weekly Flow Trend

  17. Bypass Pump Set Up

  18. Bypass Piping

  19. Spill/Response Plan; Noise; Odor; & Monitoring

  20. Key Design Issues • Confirm Capacity • Location of Bypass Pumping & Piping • Traffic Control • Duration of Bypass • Contractor Submittals: bypass plan, noise, odor, monitoring, and redundancy

  21. QUESTIONS Maintaining Sewage Flow During Construction Activities

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