API 650 Oil Storage Tank

Product / project title:	7157 Digester Gas Storage Replacement
Product / project owner:	City of San Jose
Product / project location:	San Jose, CA
Date completed:	October 2015
Construction standard (if any):	API 650
Overall height / length (feet, inches):	42’ -8”
Column height (feet, inches):	–
Diameter (feet, inches):	50’ -0”
Capacity (US gallons):	See Below
Steel tonnage used (US tons):	70
Steel thickness (inches):	1/4”
PRODUCT / PROJECT DESCRIPTION AND SPECIAL FEATURES:
This 50,000 cu. Ft. Low pressure gas holder was a replacement to a smaller unit at the facility. The treatment plant needed increased capacity with limited space, and so had to install this new gas holder in the same area originally occupied by the older unit. This unit provides necessary capacity for increased demand from daily operation of the plant. The city’s specification required that the gas holder be designed for an initial operating pressure of 6½ inches water column and to be able to accommodate an increased future operating pressure of 14 inches water column. The piston deck was designed to accommodate the future placement of additional ballast for the increased pressure.

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