Item No. 8a_supp
Meeting Date: July 9, 2019

Electric Utility Switching Project Supervisory Control And Data
Acquisition(SCADA)
Commission Meeting
July 9, 2019
CIP: 800699

Overview
Request Commission authorization for the Executive Director to:
1. Increase the authorized funds for the Electric Utility Supervisory Control and
Data Acquisition (SCADA) project in the amount of $10,350,000
2. Advertise and award a major works construction contract at Seattle-Tacoma
International Airport
3. Use Port crews and small works contracts to assist with the project.

• Total estimated project cost is $11,950,000, an increase of $2,300,000
• Project presented to partner airlines on June 27, 2019
- Favorably received
- Majority in Interest (MII) approval expected in August

2

SCADA - What and Why
• Supervisory Control and Data Acquisition (SCADA) systems
- Data acquisition
- Networked data communication
- Data presentation
- Control
- Employee safety

3

SeaTac Airport Power Distribution System
•
•

12.5KV Medium Voltage Distribution System
Fed via 2 substations
- PSE Substation Sea-Tac - South Main Substation
- PSE Substation Bow Lake - North Substation
- Distribution to 26 Power Centers

•

Alternate Utility Facility (AUF) integration

4

Project Budget
• Previous approvals and estimates:
- Design authorization granted on August 4, 2015 for $1.6M with a
total estimated project cost of $9.65M

• Today's request:
- Increase total estimated project cost by $2.3M to $11.950M
- $2.3M increase includes:
• New Electrical Command & Control Center (EC3) room at $650K
• Required Puget Sound Energy Bow Lake substation upgrades at $900K
• Pre-design budget shortfall of $750K

5

Schedule
• Design Complete: 1st Quarter 2020
• Construction start: 2nd Quarter 2020
• In-use date: 2nd Quarter 2022

6

Questions?
Thank you for your time!

This Photo by Unknown Author is licensed under CC BY-SA
This Photo by Unknown Author is licensed under CC BY-NC-ND

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