. Electric railway journal . pipe corrosion have beenprepared by the Pittsburgh Testing Laboratory, thetests covering 2-in. uncoated black steel pipe and uncoated black pipe. These tests weremade to show the results of deactivating or deoxidiz-ing the water which flows through the pipe by meansof the Speller system of the National Tube results showed that even while the oxygen removalhad at times been incomplete due to the low temperatureof the water, the corrosion in the deactivated hot-waterline was practically negligible, whereas specimens ofthe same iron and s
. Electric railway journal . pipe corrosion have beenprepared by the Pittsburgh Testing Laboratory, thetests covering 2-in. uncoated black steel pipe and uncoated black pipe. These tests weremade to show the results of deactivating or deoxidiz-ing the water which flows through the pipe by meansof the Speller system of the National Tube results showed that even while the oxygen removalhad at times been incomplete due to the low temperatureof the water, the corrosion in the deactivated hot-waterline was practically negligible, whereas specimens ofthe same iron and steel pipe failed by pitting in lessthan a year in an unprotected part of the same hot-water line. The tests mentioned were begun on , 1916, and the pipes were opened on Dec. 24, 1917,and Jan. 3, 1919. There was a soft black coating in-side the protected section. In the protected section there was a soft black coatinginside the pipes but no evidence of pitting even wherethe steel pipe was in contact with a brass SIX-TRACK LOOP IN PREPAYMENT AREA FOR SHIPYARD WORKERS IN SAN FRANCISCO March 8, 1919 Electric Railway Journal 455 Getting Better Economy in the Power House* Substantial Savings Are Possible, Particularly in the Boiler Room,Where in the Past Some Very Simple Expedients forFuel Saving Have Been Overlooked By G. H. KELSAY COAL is the source of power for practically all ourproperties. The United States possesses aboutone-half the coal supply of the world, sufficientto last us a period ranging from one hundred years tofour thousand years. The first period is for a consump-tion increasing at the present rate, but the coal willlast for thousand years at the present annual consump-tion. We have used to date about one-half per centof this, as is shown graphically in Fig. 1. One pound of coal of 11,000 heat units () hasstored in it, heat energy which if it could be changedto mechanical energy would lift a stout man ten milesor its own weight 2000 miles. If the
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