A four-stage boiler feed pump has suction and discharge lines of \(10 \mathrm{~cm}\) and \(7.5 \mathrm{~cm}\) inside diameter. At \(3500 \mathrm{rpm}\), the pump is rated at \(0.025 \mathrm{~m}^{3} / \mathrm{s}\) against a head of \(125 \mathrm{~m}\) while handling water at \(115^{\circ} \mathrm{C}\). The inlet pressure gage, located \(50 \mathrm{~cm}\) below the impeller centerline, reads \(150 \mathrm{kPa}\). The pump is to be factory certified by tests at the same flow rate, head rise, and speed, but using water at \(27^{\circ} \mathrm{C}\). Calculate the NPSHA at the pump inlet in the field installation. Evaluate the suction head that must be used in the factory test to duplicate field suction conditions.