Upgrading Aging Flood Pump Stations
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Upgrading Aging Flood Pump Stations Josh Dickerson, P.E. Flood Protection Engineering Supervisor
Transcript of Upgrading Aging Flood Pump Stations
Upgrading Aging Flood Pump Stations
Josh Dickerson, P.E.Flood Protection Engineering Supervisor
Agenda
• Louisville's Flood Protection System
• Common problems and Reason to Upgrade
• MSD’s recent/current Upgrades
• Lesson’s Learned and Big Take Aways
24.4 miles of earthen levee
4.5 miles of concrete floodwall
16 pumping stations, including Riverfront Station when it goes into operation
49 movable street closures 21 sandbag closures
53 Flood Control Gates 150 Process Gates= Protects 87,000 homes, over 200,000 people, and $23.8 Billion in assets
Louisville’s System
Location of MSD Flood Protection Facilities
1957-Beargrass Creek to Rubbertown (17 miles)Late 1980s-Rubertown to Pond Creek
Flood Pumping Station Common Problems and Reasons for Upgrades
• Pump corrosion/deterioration – Environmental– Vibrations
• Mechanical• Hydraulic Cavitation
• Bearings• Reliability• Electrical • Replacement Parts• Too much cash on hand and need to spend it on
something!
4th St Flood Pumping Station
4th St Flood Pumping Station
• Duel Sanitary and Flood Pump Station• Three 450 hp flood pumps• Three 60 hp sanitary pumps• Downtown Louisville
4th St Flood Pumping StationPhysical Constrictions
• Work area
• Over head space
4th St Flood Pumping StationPumps
• Pump Design– Pull out pump– Voltage– Raising discharge
• Outage Schedule– Pump Capacity
Pull Out Pumps, Shaft and ImpellerThis image cannot currently be displayed.
Beargrass Flood Pumping Station -Electrical Improvements project
8 Pumps with a total capacity of 3532 MGD6-3,000 hp, 1-2,500 hp & 1-600 hp
Beargrass Flood Pumping Station Electrical Improvements project
• 4160V Substation upgrades• 480V load distribution• Motor control switchgear• Electrical wiring replacement• New PLC and instrumentation
connections,• Ventilation/dehumidification• New roof
• Pump RTD replacement• New hoist and trolley in the lower level• New lubrication system for the pumps• Actuators for Gates 4 and P-1• Asbestos mitigation• Internal and external lighting upgrades• An Arc Flash study
The project scope of design included:
Challenges Faced During Construction
Beargrass Flood Pumping Station Electrical Improvements project
Louisville Metropolitan Sewer District• MSD Flood Protection Engineering Supervisor/
Project Manager• MSD Flood Protection Operations Manager• MSD Flood Protection Operations Supervisor• MSD Flood Protection Construction Inspector
Contractors• Glenwood Electric (Prime)• Dugan and Myers (Subcontractor)
o Various subcontractors
Jacobs Engineering• Project Manager• Construction Manager• Resident project Representative• Sub-consultants
Beargrass Flood Pumping Station Electrical Improvements project
• Sequencing the construction • Limiting Construction During Flood Season• Switchgear was installed in 2 sections to keep
pumps running with minimum downtime. • Controls Narrative for new PLC
Beargrass Flood Pumping Station Electrical Improvements project
Document control is a critical path item
Submittals (489)Request for Information (23)Request for Contractor Pricing (10)
The window for construction is in the non-flood season
Documentation & Communication is the Key!
Beargrass Flood Pumping Station Electrical Improvements project
After 60 years wire lubricant is not quite the same
Pulling old wires and reusing good conduit was determined the acceptable method for several circuits
Paddy’s Run Flood Pumping Station
Paddy’s Run Flood Pumping Station
• Replacing pump Columns on 1 & 2• Dual stage pump• Motors in good shape
New Vs Rehab’ed- $ & Time
Top-side Cavitation
Lesson’s Learned and Big Take Away’s
• Planning and Site Visits
• Drawings & Specs
• Prep for Change
RiskGame Plan can be more Important sometime then Actual Plan
Lesson’s Learned and Big Take Away’s
More Reused Parts = More Contingency Needed
= $Possible
Risk
