YOUR BONITA (BEAUTIFUL) PUMP STATION, THE DISTRIBUTION SYSTEM HEART MICHAEL IDEHARA, P.E.* *LICENSED IN OR 1 May 2015
YOUR BONITA (BEAUTIFUL) PUMP STATION, THE DISTRIBUTION SYSTEM HEART MICHAEL IDEHARA, P.E.*
*LICENSED IN OR
1 M
ay 2
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AGENDA • Program and Project Background • Bonita Pump Station Design
Features • Construction Highlights
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PROGRAM AND PROJECT
BACKGROUND
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• August 2008 – Cities of Lake Oswego and Tigard enter partnership agreement to share drinking water resources and costs.
• City of Tigard has been a customer of Lake Oswego since 1970’s.
• Tigard customers gain a long-term, affordable drinking water source.
LAKE OSWEGO TIGARD WATER PARTNERSHIP
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Overall Facilities Map
PROJECT BACKGROUND
Tigard Water System
•Replace existing PS
• Future demand 14-20 MGD
•Multiple sources of supply
•New dual pumping zone pump station
•Build-out capacity = 20 MGD
•Waluga Reservoir (LO) to Tigard 410 and 470 zones
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Source: www.tigard-or.gov
PROJECT BACKGROUND
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Existing Bonita PS
New Bonita PS
Bonita Rd
I-5
72
nd A
ve
Location Map
DESIGN FEATURES
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Pump Station Capacities
•2016 demands = 14 MGD
•470 zone = 9 MGD
•410 zone = 5 MGD
BONITA PUMP STATION DESIGN FEATURES
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•Build-out = 20 MGD
•470 zone = 14.4 MGD
•410 zone = 5.5 MGD
•VFD Driven Vertical Turbine Pumps
•Pump to two zones; PZ 410 and PZ 470
•4 pumps – Dual Service PZ
•PZ 470 = 3.67 MGD
•PZ 410 = 4.50 MGD
•1 Pump = 4.50 MGD
• Future Pump = 4.50 MGD
BONITA PUMP STATION DESIGN FEATURES
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Building Construction
• 2010 OSSC
• 2012 Oregon Energy Code
• Low height impact
• Conditioned spaces
BONITA PUMP STATION DESIGN FEATURES
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• Insulated wall panels
• Skylights over pumps
• CMU Walls
• Standing seam metal roof (insulated)
BONITA PUMP STATION DESIGN FEATURES
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VTP
Suction Header (buried/outside)
VFD’s Switchgear
Heat Pumps
410 Zone 470 Zone
Future VTP
Floor Plan
BONITA PUMP STATION FEATURES
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CONSTRUCTION HIGHLIGHTS
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NOISE LIMITATIONS
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Design Criteria:
• 40 dBA at noise‐sensitive property boundaries.
• 60 dBA at non noise‐sensitive property boundaries.
Heat Pumps
Engine Generator Acoustical Intake Louvers
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45 dBA
50 dBA
55 dBA
60 dBA
65 dBA 70 dBA
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40 dBA
45 dBA
50 dBA
55 dBA
60 dBA
INSULATED BUILDING ENVELOPE
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• Compliance with Oregon Energy Efficiency Specialty Code
• Simplified Trade-Off Approach - COMcheck
• Insulated roof panels = R-20 ci
• Insulated wall panels = R-11 ci
• Roofing consultant
FLEXIBILITY IN SUCTION AND DISCHARGE PIPING
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• Liquefaction-induced settlement
• Displacement during MCE = 3-inches
• Flexibility in piping vs alternate foundation design.
• Mechanical couplings
• Tie-rod design must consider stress and strain per HI.
FLEXIBILITY IN SUCTION AND DISCHARGE PIPING
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• Two joints to provide flexibility
• No joint deflection during installation
• Pump cans and buried piping isolated from building foundation
PRESSURE TESTING BUTTERFLY VALVES
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• BFV’s pressure tested prior to installation
• Each side of valve disc tested
SUMMARY
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• Consider requirements of the Oregon Energy Code.
• Acoustical analysis is a useful tool to identify and mitigate high noise levels.
• Consider tie rod strain, not just stress.
• Consider pressure testing valves before installation.
Construction progress to date
Michael Idehara, P.E.*
Black & Veatch 5885 Meadows Rd, Suite 700 Lake Oswego, OR 97035 503-443-4468 | [email protected] *Licensed in OR
CONTACT INFORMATION
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QUESTIONS?
mailto:[email protected]
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