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HomeMy WebLinkAbout09.a. (Handout)FA COGENERATION SYSTEM UPDATE Craig Mizutani Senior Engineer June 7, 2012 Central Contra Costa Sanitary District Cogeneration System Failure Investigation • Third Party Investigation Suspended • Investigation Continues by District's Insurance Co. - Insurance Technical Experts - ED &T - Valve Testing at Solar Turbines - Control Logic by District 9a• (Nand oaf) 1 Required Repairs • "Design /Build" approach by Carollo Engineers • Cogen Unit - Fuel System _ - Exhaust Bellows - Enclosure • Ducting - Liner /Insulation - Supports - Economizer & Duct • Diverter valve • Expansion Joints COGEN DIAGRAM 6 Repair Work To -Date • Cogen Outlet and Economizer Ductwork Removed 3 12 - - ■, ■ ■ ■, - ) 12 Future Repairs • Ductwork - Steel Supports to meet CBC 2010 - Concrete Repairs - Reinstall Cogan Outlet Duct • Expansion Joints - Install New Joints • Economizer - Repair Deformed Panel • Economizer Duct - Replace • Miscellaneous - Grout, Instruments, MISC. • Turbine - Re- Commission D i Controls Upgrades • PLC upgrade by CCCSD /Carollo - Replace Existing PLC's With Newer Models - HRSG PLC Done Gam' Next Steps • Structural Work - Target 6/30 • Economizer Work - Target 6/30 • Cogen PLC Upgrade - Target 6/13 • Turbine Work - Direct Contract with Solar Turbines - Parts Availability - Target 7/31 - Commissioning 2nd week of August • Continue to work with Insurance for root cause Cogeneration System Update 9