In systems with more than 1000 sprinklers, how many spare heads should be kept on hand?

In fire protection systems with more than 1000 sprinklers, maintaining an adequate number of spare heads is crucial for effective emergency maintenance and replacement. The requirement to keep 24 spare heads on hand is based on industry standards that account for the possibility of multiple sprinkler heads needing replacement due to damage or system testing.

This quantity not only ensures that there are enough replacements for routine maintenance and accidental breakage but also accounts for various types of heads that may be used in the system. Keeping 24 spare heads allows fire departments or maintenance personnel to effectively respond to issues without causing delays in operations or risking system efficacy during an emergency.

It is important to note that options like 12, 18, or 30 spare heads do not align with the recommended practices for such a large system, where the risk of head failure is higher, and adequate backup is essential for compliance with safety regulations and ensuring operational readiness.