8b. Presentation
Dearator and Condensate System Upgrades
Item No. 8b_supp Meeting Date: April 18, 2023 Deaerator (DA) and Condensate System Upgrades (Hot Project) Joe Cook Matthew Piccolo AV F&I – Mech. Engineering Manager AV PMG – Capital Project Manager Project Overview Project replaces old heating system components in SEA’s Central Mechanical Plant that supply space heating and domestic hot water heating throughout concourse areas, and replaces old secondary air compressor needed for redundancy. Requesting Commission Authorization for: • Design and construction of secondary air compressor portion of project, • A project specific designer for removal and replacement of tanks and pumps, • Approval of total revised project budget of $14,656,000 (a $4.8 million increase) 2 Project Scope • Replace deaerator (‘DA’) tank, steam condensate tank, blowdown flash tank • Install new feedwater pumps with energy-efficient variable frequency drives • Remove Boiler Room air handling unit and three old air compressor systems • Install new secondary air compressor in Mechanical Room 211 (discretionary change, added from small works project) 3 Schedule Milestone Date Commission Authorization for Design Q2 2023 Commission Authorization Construction – Air Compressor Q2 2023 Commission Authorization Construction – DA & Condensate Q3 2025 Notice to Proceed – Secondary Air Compressor Q4 2024 Notice to Proceed – DA & Condensate Tanks Q4 2025 Substantial Completion – Air Compressor Q4 2025 Substantial Completion – DA & Condensate Q1 2028 4 Budget Cost Estimate Capital ERL Total Status 2 Estimate (2020) $9,805,000 $220,000 $10,025,000 Revised Project Estimate (2022) $14,444,000 $212,000 $14,656,000 5 Cone of Certainty We are here: Notebook Development, IC Approval, Commission Authorization 6 Action Requested • Increase project budget by $4,851,000 for a total revised budget of $14,656,000 • Execute a professional services contract for design services • Prepare design and construction bid documents for the Deaerator and Condensate System Upgrade project • Advertise and execute a major works construction contract for the secondary air compressor portion of the project • Authorize the use of Port of Seattle Crews for pre-construction activities 7 QUESTIONS? 8
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