Visual Materials
Portal Powerhouse - Wye branch
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Portal Powerhouse - View from interior of Wye branch looking toward powerhouse.
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Portal Powerhouse - 1st of 3 flashlight close-ups of completed wye-branch reinforcement looking downstream into branch pipes showing upstream pipe columns and rock deflector.
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Portal Powerhouse - 2nd of 3 flash pictures of completed wye-branch reinforcement; close-up of welding details at bottom of pipe columns.
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Portal Powerhouse - Last of 3 flash pictures of completed wye-branch reinforcement; close-up of welding details at bottom of pipe columns.
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Portal Powerhouse - Placing concrete in supporting wall under end of 12' diameter pipe. Excavating old concrete anchor. [Forming new] foundation & Wye branch anchor.
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Portal Powerhouse - Temporary backing to reduce vibration in 3/8" plate bulkhead in turbine Wye branch inadequate; it was replaced with concrete disc back by I-beams.
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