An emergency flooding system for a nuclear reactor core is shown in Fig. P8.76. Find the power input required to flood the core at the rate of \(5000 \mathrm{gal} / \mathrm{min}\). Assume a square-edged entrance, \(60^{\circ} \mathrm{F}\) water, and threaded connections.

Figure P8.76

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Patm 50,000 gallons water 750 ft of 3-in. schedule 160 stainless steel pipe (actual I.D. is 2.625 in.), three gate valves, seven 90 regular elbows 2000 psig Core