presentation for cwea training keys to successful pipeline/infrastructure projects
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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. - PowerPoint PPT PresentationTRANSCRIPT
PRESENTATION FOR CWEA TRAININGKeys to Successful Pipeline/Infrastructure ProjectsPipeline Flow Diversion
Presented by: Tom Epperson, PE, Tetra Tech
Pipeline Flow DiversionKeys to Successful Pipeline/Infrastructure Projects
Tom Epperson, PE, Tetra Tech
• Connections to Existing Sewer• Manhole Connections or Rehab Work• Rehabilitation – Bypass Pumping
Maintaining Sewage Flow During Construction
• Construct New MH over Existing Pipe• Keep Flow within Pipe• Modify Channel/Base• Cut and Remove Top of Existing Pipe
Connection to Existing Sewer – Maintain Sewage Flow
1. Existing Sewer Pipe
Connection to Existing Sewer – Maintain Sewage Flow
Connection to Existing Sewer – Maintain Sewage Flow
1. Existing Sewer Pipe2. Add Manhole Base
& Shaft
Connection to Existing Sewer – Maintain Sewage Flow
1. Existing Sewer Pipe2. Add Manhole Base
& Shaft3. Modify Channel &
Side Pipe
1. Existing Sewer Pipe2. Add Manhole Base
& Shaft3. Modify Channel &
Side Pipe4. Cut & Remove Top
of Pipe
Connection to Existing Sewer – Maintain Sewage Flow
Manhole Connections or Rehab Work
Key Issues:• MH Access (cover size)• Confined Space Entry• Sizing of Flow-thru Tubes• Confirmation of Back-up
Manhole Connections or Rehab Work
Flow-thru Tubing
Manhole Work
Flow-thru Tubing
Manhole Work
Key: No Sewer Spills
Rehabilitation – Bypass Pumping
• Bypass Pumps• Bypass Piping• Redundancy• Spill Prevention &
Response Plan• Noise Monitoring• Odor Monitoring• Monitoring Systems
Key Elements of Bypass Plan
• Capacity – Typical Sewage Flow & Peak Flow Rate
• Suction Supply• Pumping Equipment
(submersible, self-priming centrifugal)
• Valving
Bypass Pumps
Capacity – Typical Sewage Flow & Peak Flow Rate
Weekly Flow Trend
Bypass Pump Set Up
Bypass Piping
Spill/Response Plan; Noise; Odor; & Monitoring
• Confirm Capacity• Location of Bypass Pumping &
Piping• Traffic Control• Duration of Bypass• Contractor Submittals: bypass
plan, noise, odor, monitoring, and redundancy
Key Design Issues
QUESTIONSMaintaining Sewage Flow During Construction Activities