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  • Title
  • TGM Subject
  • Description
  • Collection
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  • Downstream End of Penstocks
  • Penstocks--Washington (State)--Grand Coulee Dam; Plans
  • The downstream end of the three station service penstocks prior to the installation of the two turbines.
  • Frank A. Banks Collection
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  • Penstock Hoisting
  • Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation; Spillways--Washington (State)--Grand Coulee Dam
  • A main unit penstock section about to be hoisted into a right power house turbine pit. A total of 126 sections was moved by this method into the right power house turbine pits without a single mishap.
  • Frank A. Banks Collection
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  • Penstock Liner
  • Pumping plants; Penstocks--Washington (State)--Grand Coulee Dam Plans
  • An 18-foot diameter penstock liner section is delivered to the left powerhouse. The crane will lift the big steel pipe from the railroad car and lower it into a turbine pit for installation in one of the nine penstock tunnels.
  • Frank A. Banks Collection
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  • Penstock Liner Section
  • Pumping plants; Penstocks--Washington (State)--Grand Coulee Dam Plans
  • An 18-foot diameter penstock liner section ready to be installed in one of the nine penstock tunnels of the left group.
  • Frank A. Banks Collection
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  • Penstock Liner
  • Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation; Spillways--Washington (State)--Grand Coulee Dam
  • An 18-foot diameter penstock liner, and load of reinforcement steel approaches the right power house by road along the river. A barge will carry one truck and the loaded trailer across the intervening water of the right tailrace. The rear truck...
  • Frank A. Banks Collection
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  • Penstock X-Ray Machine
  • Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation; Spillways--Washington (State)--Grand Coulee Dam
  • A 200,000-volt X-ray machine photographing the circumferential welded seams of a main unit penstock section. One picture covers 16 inches of the seam; the penstock liner is rotated so that successive 16-inch sections of the seam are X-rayed. The...
  • Frank A. Banks Collection
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  • Penstock Tunnel
  • Penstocks--Washington (State)--Grand Coulee Dam; Spillways--Washington (State)--Grand Coulee Dam
  • The 24-foot octagonal penstock tunnel in which the 18-foot penstock liners are installed. The platform and track for handling the penstock sections will be removed when the installation is completed.
  • Frank A. Banks Collection
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  • Penstock Liner Installation
  • Penstocks--Washington (State)--Grand Coulee Dam; Spillways--Washington (State)--Grand Coulee Dam
  • The installation of the penstock lining in the tunnel has been completed. The space between the lining and the walls of the tunnel will be backfilled with concrete.
  • Frank A. Banks Collection
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  • Penstock Welding
  • Penstocks--Washington (State)--Grand Coulee Dam; Spillways--Washington (State)--Grand Coulee Dam
  • Welding in progress on the installation of an 18-foot diameter steel penstock liner section. The scaffold is used by welders to make the circumferential seam joining this section with the one previously installed.
  • Frank A. Banks Collection
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  • Penstock Transportation
  • Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation; Spillways--Washington (State)--Grand Coulee Dam
  • Transportation of a penstock section to the right power house. The truck and loaded trailer have moved onto the barge which will carry both across the intervening water of the right tailrace.
  • Frank A. Banks Collection
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  • Fabrication Plant
  • Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation
  • Western Pipe & Steel Company's fabrication plant at Electric City. Completed penstock sections have been rolled out into the storage yard.
  • Frank A. Banks Collection
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  • Penstock Coaster Gate
  • Penstocks--Washington (State)--Grand Coulee Dam; Employees--Washington (State)--Grand Coulee Dam
  • Portion of penstock coaster gate, showing rollers and seal (first coaster gate to be installed--for unit L-3).
  • Frank A. Banks Collection
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  • Grand Coulee Dam Outlet Works
  • Penstocks--Washington (State)--Grand Coulee Dam; Plans; Design drawings
  • Department of the Interior: Bureau of Reclamation Columbia Basin Project - Washington Grand Coulee Dam Outlet Works - El. 1136.67 102" Ring seal gate conduits installation
  • Frank A. Banks Collection
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  • Outlet Works Gate Installation
  • Gates; Penstocks--Washington (State)--Grand Coulee Dam Plans; Spillways--Washington--Grand Coulee Dam
  • A ring seal gate casting is lowered into position during the installation of the 102-inch diameter outlet works at el. 1136 in the spillway section of the dam.
  • Frank A. Banks Collection
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  • Ring Seal Gate Casting
  • Gates; Penstocks--Washington (State)--Grand Coulee Dam Plans; Spillways--Washington--Grand Coulee Dam
  • Ring seal gate castings for the 102-inch diameter outlet works at el. 1136.
  • Frank A. Banks Collection

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