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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Start of lowering Howell Bunger valve into place.
Type: Visual Materials(Opens in new tab)
Date: Sep. 1956
Call number: photCL SCE 02 - 44800
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse
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Portal Powerhouse - Shortly before lowering Howell Bunger valve into place.
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Portal Powerhouse - Nearing completion of lowering Howell Bunger valve into place. Note D.C. Cat. being used as hold down for Manitowac Crane.
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Portal Powerhouse - Butterfly valve attached to turbine nozzle
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Portal Powerhouse - Butterfly valve attached to turbine nozzle - Penstock bulkhead still in place.
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Portal Powerhouse - Lowering grade in diversion channel lower Rancheria Creek section
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Portal Powerhouse - Penstock pipe in cribbing near outlet of Ward Tunnel welded together into pulling sections for installation in tunnel after start of outage.
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