MassDOT initial pump pressure into standpipe fill points is __ psi.

The initial pump pressure into standpipe fill points is set at 100 psi to ensure a reliable supply of water in emergency situations. This pressure is adequate to achieve effective water flow and can adequately overcome the friction losses that may occur within the standpipe system due to long runs or bends in the piping.

In practice, starting with a higher-than-normal pump pressure helps to ensure that water can reach the upper floors, where it is often needed most during a fire response. This initial pressure also provides enough force for fire suppression operations while maintaining enough pressure to keep the system functional even as the water is being drawn from the standpipe. Therefore, setting this standard at 100 psi aligns with operational protocols aimed at enhancing both safety and efficiency in firefighting efforts.