A 6 in. sch 40 pipeline carries a petroleum fraction (viscosity $15 \mathrm{cP}, \mathrm{SG} 0.85$ ) at a velocity of $7.5 \mathrm{ft} / \mathrm{s}$, from a storage tank at $1 \mathrm{~atm}$ pressure to a plant site. The line contains $1500 \mathrm{ft}$ of straight pipe, $2590^{\circ}$ flanged elbows, and four open globe valves. The oil level in the storage tank is $15 \mathrm{ft}$ above ground, and the pipeline discharge is at a point $10 \mathrm{ft}$ above ground, at a pressure of 10 psig.

(a) What is the required flow capacity (in gpm) and the head (pressure) to be specified for the pump needed to move the oil?

(b) If the pump is $85 %$ efficient, what horsepower motor is required to drive it?

(c) If a 4 in. diameter orifice is inserted in the line to measure the flow rate, what would the pressure drop reading across it be at the specified flow rate?