Crude oil flows through a level section of the Alaskan pipeline at a rate of 1.6 million barrels per day 1 barrel =42 gal . The pipe inside diameter is 48 in.; its roughness is equivalent to galvanized iron. The maximum allowable pressure is 1200 psi; the minimum pressure required to keep dissolved gases in solution in the crude oil is 50 psi. The crude oil has SG=0 93; its viscosity at the pumping temperature of 140 F is μ=3 5×10−4 lbf s ft2. For these conditions, determine the maximum possible spacing between pumping stations. If the pump efficiency is 85 percent, determine the power that must be supplied at each pumping station.