The relief valve on a fire pump is set at 25 psi above the pressure necessary to maintain the required fire hose streams, or __________.

Correct Answer: Option C — 125 psi

46 CFR Subchapter F mandates that fire pumps be equipped with a relief valve set to prevent over-pressurization of the fire main. This valve must be set at 25 psi above the required operating pressure or 125 psi, whichever is greater, to protect piping integrity during pump operation.