Why Drain an entire Fire Water Protection System (FWPS) to repair and/or expand the system branches or mains?

If you are responsible for a 24/7/365 facility and there is no such thing as a “shut down”, there is always a way to make the needed repairs with the system charged.   With line freezing or mechanical line stops, you can repair any given section of pipe or equipment while keeping the remainder of the facility LIVE and under full operating pressure.