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Lake Roosevelt Forum November 2013

Grand Coulee Power Office. T o Banks lake. Keys PG Plant. Drum Gates. Left Power Plant. Outlet Tubes. Right Power Plant. Third Power Plant. Lake Roosevelt Forum November 2013. Grand Coulee 6 Key Responsibilities Many Stakeholders. Flood Control Power Irrigation Fish

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Lake Roosevelt Forum November 2013

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  1. Grand Coulee Power Office To Banks lake Keys PG Plant Drum Gates Left Power Plant Outlet Tubes Right Power Plant Third Power Plant Lake Roosevelt Forum November 2013

  2. Grand Coulee6 Key ResponsibilitiesMany Stakeholders Flood Control Power Irrigation Fish Recreation Environment

  3. Columbia River System Hydro Plants

  4. Grand CouleeFast Facts • Completed in 1942 by the Bureau of Reclamation • 550 feet tall • Electric Power: 33 generators, 6,809 MW capacity Plant capacity represents 31% of federal system Turbine flow range 0 to 280,000 cubic feet per second (cfs) • Flood Control: 5.2 million acre feet of storage (25% of federal system) • Irrigation: Provides water for over 700,000 acres • Live Storage 5.2 million acre feet (25% of the system) • Employs more than 580 people when fully staffed

  5. Grand CouleeFast Facts (cont) • Average water year ~60 million acre feet • Banks Lake Storage ~ 1.053 million acre feet • Irrigation Water Delivery ~ 2.6 million acre feet per year • Crop value of the Columbia Basin ~ $702 million per year • Leavenworth Fish Hatchery Complex – fish mitigation for GC • Water Management: Store, Generate, Spill, Pump • 2 ways to spill water • 11 Drum Gates – one gate can spill ~100,000 cubic feet per second • 42 Outlet Tubes – one tube can spill ~ 5,000 cubic feet per second

  6. Inflow to Grand Coulee

  7. Enterprise Management GOAL: Manage Grand Coulee for short term and long term success Assess Condition of Assets – Risk Assessment, Needs Identification Outage Planning Budget Planning Human Resource Planning Tools: Condition Assessments, Long Range Plan, Budget Plans, Staffing Plans, Fiscal Year Plans, Outage Plans

  8. Overhaul &Modernization Third Power Plant Keys Pump/Generation Plant Right and Left Power Plants Switchyards Outlet Tubes Drum Gates

  9. Risk Management Project Management Approach Risk Management & Analysis Techniques Risk Identification and Analysis Timing Impacts to other projects/missions Impacts from other equipment/areas Risk Registers Risk Mitigation Plans Eliminate Risks Minimize, mitigate, contingency plan

  10. Third PowerplantG-22, G-23 & G-24 Overhaul

  11. Third PowerplantG-22, G-23 & G-24 Overhaul

  12. TPP Overhaul Projects- Summary • Goal: A reliable TPP for another 30 years of service • Utilize a Managed, Risk-Based Approach • Project Management: Focus upon maintaining scope, schedule and budget, with attention to quality and risk • Pre-Overhaul Projects: Reduce the risk of multiple units being out of service at once during periods of high demand • One TPP unit will be offline for overhaul thru 2025, beginning in 2013. Another TPP unit OOS for maintenance.

  13. Third Powerplant Overhaul Projects Components: • G22-24 Mechanical Overhaul • G19-21 Mechanical Overhaul • Pre-overhaul projects (9) • To reduce risk during overhaul • B-List Team projects • Work needed before the overhaul contract • Work difficult to scope/contract

  14. Third Powerplant Overhaul Projects TPP Pre-Overhaul Projects (Completed) • G22-24 Shaft Seal Purchase • Materials Storage Building • Crane Controls • Intake Gate Maintenance Chamber Modifications • Elevator Overhaul • Excitation System • Governors Upgrades • G19-G20 Transformer Replacement • 500 KV Cable Replacement

  15. 500kV Overhead Power Lines

  16. Power Transformers

  17. Material Storage Building

  18. Cranes

  19. G-22, G-23 & G-24 Overhaul Contract • Awarded to Andritz Hydro for $102M • Schedule: March 2013 – June 2017 • 17 months/unit • Components to be overhauled: • Wicket Gates, Bushings • Head-cover, Operating Ring • Servos • Lubrication Systems • Cooling Water Systems • Brake and Jack Systems • Wear Rings • Bearings • Shaft Seals (new mechanical seals)

  20. G-19, G-20 & G-21 Uprate/Overhaul • We are in the planning phase, determining whether to just overhaul the units or to also uprate them • G19-21 Overhaul Uprate to begin in 2017 when G22-24 are completed • G19-21 Overhaul/Uprate completion: 2023 to 2025 • One unit out of service for overhaul/uprate during this time period, another unit OOS for maintenance

  21. Keys Pump/Generating PlantModernization Increasing maintenance and modernization needs must be addressed to ensure that the plant continues to meet its authorized purposes. Authorized purposes include pumping water to Banks Lake for use by irrigation districts and supplying power balancing reserves for the BPA service area. Planning and design are underway while funding for construction is being established. Determining who funds how much is a challenge that has impacted schedules

  22. John W. Keys III PGP Modernization Base Case Projects • Transformer KP10B and Disconnect Switches Replacements (KP10A and KP10B) • Procurement package is 90% complete, will be finalized this year. • Circuit Breaker Replacements • Spec is 100% complete, contract award is expected in 2015. • P5 and P6 Impellers and Stator Core Replacements, Rewinds • Procurement package is complete, contracting will start when funding is secured • P1-PG12 Exciters, Protective Relays, Unit Controls Replacements, and PG7-PG12 Governor Replacements • The procurement package is scheduled to be finalized this year. • Phase Reversal Switches Replacements • Design work is scheduled to commence in 2015.

  23. John W. Keys III PGP Modernization Other Projects • Reverse Flow Gate Refurbishments and Bypass System Replacements • Spec is 90% complete and will be finalized in 2014. • Discharge Tube Recoating • Net Present Value Study results on the following scenarios are being reviewed for short- and long-term solutions • Spot Repair, Over-coating, Recoating • Studies in process to investigate sources of cracking in the discharge tubes and propose modifications • Structural and Fatigue Analysis • Non-Destructive Testing • Once an appropriate solution is decided upon, planning for the actual recoating of the interiors and exteriors of the tubes can commence.

  24. Right and Left PowerhouseProjects New Power Transformers New Protective Relays and Power System Stabilizers New Static Exciters New Digital Governors Cranes - Modernization and Overhaul Elevator - Modernization and Overhaul Electrical Power Buss Replacement Generator Rewinds New Low Voltage Switchgear

  25. SwitchyardProjects New Protective Relays Power Transformer Replacements New Low Voltage Switchgear New Redundant Power Feeds General Control Systems Modernization

  26. Miscellaneous Projects 1 Cultural Resource Protection on Lake Roosevelt Drum Gates: Ongoing annual maintenance Recoating (metalizing) Floating Bulkhead? Outlet Tube Valve Rehab and Controls Modernization

  27. MiscellaneousProjects 2 TPP Inclined Elevator Replacement Project Wide Emergency Power Supply Replacement (Batteries) Fire Station Relocation Station Service Air Compressor Upgrades Roadway Repairs

  28. END Scott S. Ross, PE, PMP Deputy Power Manager Grand Coulee Dam 509-633-9322 sross@usbr.gov

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