Pacific Gas and Electric magazine . tion at all times, as well as eliminatingthe dangerous factor of a supply fromone source only, Mr. E. C. Jones, the com-panys chief engineer, conceived a newinstallation, and the management has au-thorized the extension of 8,000 feet of 16-inch main, connecting the present high-pressure 16-inch main artery with theMetropolitan Gas Works, located at NorthBeach, in the northerly end of the installation is welded throughout bythe oxy-acetylene process, already madefamous by Pacific Service, therebyeliminating all joints, creating a continu-ous steel m
Pacific Gas and Electric magazine . tion at all times, as well as eliminatingthe dangerous factor of a supply fromone source only, Mr. E. C. Jones, the com-panys chief engineer, conceived a newinstallation, and the management has au-thorized the extension of 8,000 feet of 16-inch main, connecting the present high-pressure 16-inch main artery with theMetropolitan Gas Works, located at NorthBeach, in the northerly end of the installation is welded throughout bythe oxy-acetylene process, already madefamous by Pacific Service, therebyeliminating all joints, creating a continu-ous steel main without leaks. Some idea of the plan and scope of thework may be conceivedfrom a study of the ac-companying 1 shows sixlengths of 16-inch pipe,each 20 feet long, weldedtogether, a total weight of6,000 pounds, about to belowered into the 2 shows the firsttest applied to a weldedjoint, a length of 16-inchpipe, weighing 1,000pounds, hanging on itsweld; after which the Pacific Service Magazine 263. Fig. 5 various sections are lowered into thetrencli, welded together and a test withair compressed to 100 pounds to thesquare inch is applied. Figure 3 shows the operators weldingsections of 16-inch pipe together. Form-erly couplings with rubber and othergaskets were used to couple the lengthstogether, which, however, due to the dis-integration of the gasket causing leaks,proved a very unsatisfactory joint. Thewelded joint has overcome all the difTi-culties, eliminating leaks, and is installedat considerably less cost tlian formermctliods. Figure 4 shows the operator in thetrench welding together the great sec-tions. Lengths arc welded into sections,after which the sections are lowered intothe trench and then welded together. ligure 5 shows tlie inestimable valueof a welding outfit. Anobstruction in the formof a .!-incli gas serviceoccurred al Ibis order lo drop the sec-lion iiito Ihe Ircruli ilwas necessary In Icm-porarily stop tlu- siipil
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