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Guemes Island Ferry Replacement Project Preliminary …
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Skagit County Public Works www.skagitcounty.net Guemes Island Ferry Replacement Project Preliminary Design Update Tuesday, March 16, 2021
Transcript of Guemes Island Ferry Replacement Project Preliminary …
Skagit County Public Workswww.skagitcounty.net
Guemes Island Ferry Replacement ProjectPreliminary Design UpdateTuesday, March 16, 2021
Agenda• Design Update 10 min• Electrical Operations 10 min• Terminal Modifications 5 min• Project Schedule 5 min• Design Contract Amendment 5 min• Integrator Selection 5 min• Cost Estimates and Funding 5 min• Questions 45 min (throughout)
Crew Feedback
Hull Optimization
Baseline Design
Improved Performance
Improved Performance
Optimized Design
Hull Optimization - Cost Savings
• $50,000 subconsultant fee to perform optimization
• $100,000 savings on vessel batteries alone
• $14,000 annual savings on electrical energy
• Nearly $1M savings over 40 year lifetime
Electrical Systems
Shore Batteries
Automatic Charger Plug Ship
Batteries
Thrusters
Utility Power
208/120VAC SHIP SERVICE DISTRIBUTION
DC PROPULSIONDISTRIBUTION(700-1000VDC)
PROPULSIONBATTERYBANK
SESSHORE ELECTRICAL SYSTEM
VESVESSEL ELECTRICAL SYSTEM
480VACSUPPLEMENTALDISTRIBUTION
STANDBYGENERATOR
PROPULSIONMOTOR
TERMINAL POWER DISTRIBUTION
SHORE POWERRAMPAUTOMATIC SHORE
CONNECTION SYSTEM
DC/DC CONVERTER
SHIP SERVICEINVERTER
PROPULSION MOTORDRIVE
CHARGINGSWBD
208/120VAC SHIP SERVICE DISTRIBUTION
DC PROPULSIONDISTRIBUTION(700-1000VDC)
PROPULSIONBATTERYBANK
SESSHORE ELECTRICAL SYSTEM
VESVESSEL ELECTRICAL SYSTEM
480VACSUPPLEMENTALDISTRIBUTION
STANDBYGENERATOR
PROPULSIONMOTOR
TERMINAL POWER DISTRIBUTION
SHORE POWERRAMPAUTOMATIC SHORE
CONNECTION SYSTEM
DC/DC CONVERTER
SHIP SERVICEINVERTER
PROPULSION MOTORDRIVE
CHARGINGSWBD
208/120VAC SHIP SERVICE DISTRIBUTION
DC PROPULSIONDISTRIBUTION(700-1000VDC)
PROPULSIONBATTERYBANK
SESSHORE ELECTRICAL SYSTEM
VESVESSEL ELECTRICAL SYSTEM
480VACSUPPLEMENTALDISTRIBUTION
STANDBYGENERATOR
PROPULSIONMOTOR
TERMINAL POWER DISTRIBUTION
SHORE POWERRAMPAUTOMATIC SHORE
CONNECTION SYSTEM
DC/DC CONVERTER
SHIP SERVICEINVERTER
PROPULSION MOTORDRIVE
CHARGINGSWBD
Normal Operation
208/120VAC SHIP SERVICE DISTRIBUTION
DC PROPULSIONDISTRIBUTION(700-1000VDC)
PROPULSIONBATTERYBANK
SESSHORE ELECTRICAL SYSTEM
VESVESSEL ELECTRICAL SYSTEM
480VACSUPPLEMENTALDISTRIBUTION
STANDBYGENERATOR
PROPULSIONMOTOR
TERMINAL POWER DISTRIBUTION
SHORE POWERRAMPAUTOMATIC SHORE
CONNECTION SYSTEM
DC/DC CONVERTER
SHIP SERVICEINVERTER
PROPULSION MOTORDRIVE
CHARGINGSWBD
Reliability
• Safely finish trip, always
• Continue operations for most single faults
• Maximize use of utility power vs. generator
208/120VAC SHIP SERVICE DISTRIBUTION
DC PROPULSIONDISTRIBUTION(700-1000VDC)
PROPULSIONBATTERYBANK
SESSHORE ELECTRICAL SYSTEM
VESVESSEL ELECTRICAL SYSTEM
480VACSUPPLEMENTALDISTRIBUTION
STANDBYGENERATOR
PROPULSIONMOTOR
TERMINAL POWER DISTRIBUTION
SHORE POWERRAMPAUTOMATIC SHORE
CONNECTION SYSTEM
DC/DC CONVERTER
SHIP SERVICEINVERTER
PROPULSION MOTORDRIVE
CHARGINGSWBD
Batteries
Shore Electrical and Terminal
Terminal Improvements
Terminal Improvements
Overall Program Schedule
Design Contract Amendment
• New environmental consultant• Expanded scope of terminal modification (PND)• New scope for contracting support, integrator selection• Total increase requested: $470,000
Contracting Challenges
We must have a single electrical systems integrator
We want to select the ESI during contract design
Specifying VES: now vs later
Air-CooledBatteries
Electrical, Thrusters,
etc.Central FW System
Large Battery Room
AC Units
Water Cooled
BatteriesCentral FW System
Seawater Heat
Exchanger
Small AC
Selection depends on ESI
(both acceptable)
ESI-specific selections impact system sizing
Exhaust Design
Exhaust Design
Specifying VES: now vs later
Concept Design Prelim COTP Discussions Battery Safety
Grid capacity, pricing
Contract Design Electrical Concept Load Analysis Reliability
Power Quality Connection/metering
Construction Detailed Approvals QFA/DVTP/PSTP Certificate of Inspection
Utility-side modifications Final connection/test
USCG/Utility Engagement
Shore Electrical System
Automatic Charger Plug
ShipElectrical System
A single integrator is essential
Control Signals
Safety Automation
Energy Optimization
Integration and testCommissioning
Project Management
Shore Electrical System
Automatic Charger Plug
ShipElectrical System
A single integrator is essential
Integration and testCommissioning
Project Management
Terminal Project Ship Project
Integration and testCommissioning
Project Management
Integrator Selection: Options
• Shipyards choose integrators when bidding• Owner-furnish electrical systems• Competitive ESI selection (without contract)
Preliminary construction cost estimate• Vessel Construction $ 13,557,000• Terminal Improvements $ 2,000,001• Shore Side Electrical System $ 3,953,000
Total $ 19,510,001
Funding secured/pending• Funding awarded (1) $ (9,989,521)• County road fund $ (989,521)• Pending WA Capital Budget Ask $ (473,958)• Pending Transportation Package Ask $ (7,000,000)
Remaining $ 1,057,001
(1) WA Capital Budget Appropriation (2019) - $1.5MCounty Ferry Capital Improvement Program (2019) - $7.5 (payable over 20 years)Dept. of Commerce ETS grant (2020) - $989,521 (requiring a 1:1 county match)
Funding
