6i Presentation STS Control Renewal
Item No. 6i_supp Meeting Date: July 14, 2020 STS Controls Renewal and Replacement Design Authorization Seattle-Tacoma International Airport Satellite Transit System (STS) The STS is an Automated People Mover (APM) system that is the primary means for moving the public to the North & South Satellites Design and construction: 1969 - 1972 Last major upgrade: 1999 - 2003 2nd Airport APM in the World* 6 Stations with 1.7 Miles of track In 2019 the STS carried 28 Million PAX Replacement expected by 2034 Project Purpose Renewal and replacement project for the STS's Automatic Train Control (ATC) sub-system and associated software, hardware & networks Replaces 20 year old critical end of life & obsolete components Optimizes STS system capacity System recovery time improved Project received positive MII vote STS Controls Project Scope Construction Goods & Services Phase I Phase 2 ATC System - Software - Hardware - Network - Radios - Certification Negotiated Fiber/ Electrical Loop VATC X 21 Cars Procurement Network Customer Experience Planning on limiting STS shutdowns to 6 hour periods 23:00 to 5:00 12 to 15 month requirement Will test on shuttle track when possible Dedicated Wayfinding Staff Contracted Bus Support Risks Major Risks Safety: Moving train cars and exposed 600V power rail Major impacts to Satellite operations with extended STS outages Procurement method (single supplier negotiations) Daily transfer between new and old controls systems Lessons Learned SFO (6 to 17 months, backwards compatibility, # test engineers) DFW (1st major airport upgrade of similar system) LHR (The same radio replacement strategy) 2003 SEA Upgrade (staffing, safety, training) Project Timeline 2020 2021 2022 2023 2024 Long APM Develop ATC D ATC Design Lead ATC Installation & Testing Consultant Bid Package Items C Loop Loop Design Construction Phase 2 12 to 15 months Commission Authorizations Satellite Tunnel Impacts Phase 1 Nightly Busing Operation APM Consultant July 2020 1 to 2 months ATC Procurement 2021 Q2 Satellite Tunnel Impacts Loop Construction 2021 Q4 Nightly Busing Operation Budget Cost Breakdown This Request Total Project Design $8,775,000 $9,000,000 Construction $0 $8,000,000 Equipment Procurement $0 $59,000,000 Support Services $0 $3,000,000 Total $8,775,000 $79,000,000 Cost Range: $65M - $95M STS Asset Management - Long Term Renewal or Replacement to the Satellite Transit System will be required in the next 10 to 15 years. Requires study to evaluate alternative and implementation $600M - $800M for a new APM system Evaluate alternate technologies Autonomous vehicles High-speed moving walkways Alternate passenger movement to Satellites Busing Tunnel / bridge
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