Pacific service magazine . wholders, one of 6,000,-000 cubic feet capacityand of the water sealtype, was erected at thecentral generating plantand placed in operationSeptember 28, 1922; theother holder was erectedat San Leandro, havinga capacity of 500,000cubic feet, and wasplaced in operation onFebruary 28, 1922. Thecompressors at the mainplant have a capacity of2,750,000 cubic feet perhour. The boilers havea rating of 4,800 horse-power. With all these addi-tions, however, the plant was still lacking in capacity to meet theanticipated peak day sendout. It was wellequipped with generators to m
Pacific service magazine . wholders, one of 6,000,-000 cubic feet capacityand of the water sealtype, was erected at thecentral generating plantand placed in operationSeptember 28, 1922; theother holder was erectedat San Leandro, havinga capacity of 500,000cubic feet, and wasplaced in operation onFebruary 28, 1922. Thecompressors at the mainplant have a capacity of2,750,000 cubic feet perhour. The boilers havea rating of 4,800 horse-power. With all these addi-tions, however, the plant was still lacking in capacity to meet theanticipated peak day sendout. It was wellequipped with generators to meet the de-mand, but was lacking in holder storagecapacity. So, to meet the situation a 10,000,000 cubic foot storage holder was dccided upon. After careful survey of available location an eight-acre tract of land waspurchased at the foot of 50th Avenue inEast Oakland, in the factory area near SanFrancisco bay. This site was selected be-cause it was near the center of distributionfor East Oakland, and, also, for the reason. The 10,000,000cubic foot gas holder of the new waterless type,recently erected at East Oakland. Pacific Service Magazine 389 that the forma-tion of the groundwas such that,after test holeshad been boredand test loads ap-plied at variouspoints, the sim-plest design offoundation wasall that was re-quired. A radical de-parture from for-mer constructionwas made whenit was decided tobuild a holder ofthe new typeknown as water-less. This differsfrom the waterseal telescopictype previouslyinstalled by our company in that in the latter the lower tankis filled with water to make a seal betweenthe gas and the surrounding atmosphere,whereas in the new type a movable pistonis used, requiring 52,000 gallons of tar as asealing medium. The holder when filledwith gas will throw six inches of pressure
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Keywords: ., bookcentury1900, bookdecade1910, bookidpacificservi, bookyear1912
