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Middle Fork Project Project Maintenance

Middle Fork Project Project Maintenance. June 20, 2006. MFP Maintenance Summary. Three General Categories: Unplanned Outage for Repair and Maintenance; Planned Major Outages; and Routine Maintenance. MFP - Maintenance. Unplanned Outage for Repair and Maintenance

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Middle Fork Project Project Maintenance

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  1. Middle Fork Project Project Maintenance June 20, 2006

  2. MFP Maintenance Summary Three General Categories: • Unplanned Outage for Repair and Maintenance; • Planned Major Outages; and • Routine Maintenance.

  3. MFP - Maintenance Unplanned Outage for Repair and Maintenance • Hell Hole - Middle Fork Tunnel Collapse • Middle Fork Powerhouse Transformer Failures • Repair Damage from High Flows

  4. MFP - Maintenance Planned Major Outages • Generator Rewinds • Pelton-Wheel Replacement • Runner Replacement • Hell Hole - Middle Fork Tunnel Surge Shaft Repair

  5. MFP - Maintenance Annual or Periodic Maintenance • Tunnel Inspection • Ralston - Oxbow • Hell Hole Dam Outlet Conduit • Facility Testing and Maintenance • Powerhouse Inspection / Testing • Gate / Valve Testing

  6. MFP - Maintenance Debris Removal at Reservoirs & Diversions • Removal of Debris at Hell Hole, Interbay and Ralston Spillways • Trashracks cleared at Diversions, Tunnel Inlets in Middle Fork Interbay and Ralston Afterbay • Log Booms at all Reservoirs and Duncan Creek Diversion

  7. MFP - Maintenance Sediment Management • Removal with Mechanical Equipment • Hydraulic Sluicing (prior to 1976) • Slope Fencing • Slope Protection with Gunite • Sediment Management Pilot Project *

  8. MFP - Maintenance General Facility Maintenance • Vegetation - Hand Trimming and Herbicides • Pest Management - Rodenticide • Gravel Replacement • Painting • Pole Replacement - Power and Communication Lines

  9. MFP - Maintenance Project Road and Trail Maintenance • Annual - Vegetation Trimming • As-needed • Grading and Restore Road Surface • Repair and Restore Drainage Structures • Maintain Signs and Gates • Snow Removal

  10. MFP - Maintenance Project Recreation Facility Maintenance Performed by the USDA-FS under agreement with PCWA • Vegetation Trimming • Facility Painting/Repair • Fungicide Application

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