Why the 50/50 split is more than a code line
The Fire Code requirement is usually read as a box to tick. It is worth more than that once the tank is in service.
A single-compartment fire tank has to be drained to be cleaned, inspected or repaired — which means taking the fire system off-line, and that is the objection that stops most factories doing the maintenance at all. A two-compartment tank keeps one cell in service while the other is worked on: isolate one side, drain it, clean and disinfect it, return it to service, then start the other. The fire reserve is maintained throughout and production never stops for a tank.
If your existing tank is a single cell, that is the conversation worth having before your next inspection rather than after it.
- The code also calls for drain arrangement, overflow connection, level indicators and a low level switch. Tell us what the specification asks for and we will confirm what the tank can be supplied configured for.

