Our company's BFP (Boiler Feed Pump) functions to suction from the LP (Low Pressure) Drum and send it to the HP (High Pressure) and IP (Intermediate Pressure) drums. When we start the BFP, the HP discharge small MOV (Motor-Operated Valve) opens, then the BFP starts, and after 1 minute, the HP large and IP discharge MOVs open while the HP Discharge small MOV closes. I'm curious as to why the discharge MOVs open 1 minute after starting the BFP. It's worth noting that our pump is a multi-stage (10-stage) pump and it's not an inverter or fluid coupling type. There's also a Drum Level Control Valve (LCV) in the Economizer Line.