How many spare sprinkler heads are required for systems with 300 to 999 heads?

In sprinkler systems, having spare heads is an important requirement to ensure that any unit that becomes damaged or malfunctions can be quickly replaced, maintaining the integrity of the fire protection system. For systems with 300 to 999 sprinkler heads, the standard practice is to maintain a specific number of spare heads to facilitate repairs without significant downtime.

In this case, 12 spare heads are mandated for systems with between 300 and 999 heads. This number is derived from industry standards that aim to provide adequate resources for maintaining operational readiness in the event of an emergency or a need for maintenance. By having a sufficient number of spare heads, it ensures that the system can continue to function effectively and meet safety standards following a damage event.

The consideration for spare heads is based on the total number of heads in the system. This guideline helps maintain adequate coverage and functionality, ensuring that the system can be restored promptly, thus minimizing potential risks in fire safety.