If a facility has fewer than 300 sprinklers, how many spare sprinklers must be available?

In a facility with fewer than 300 sprinklers, the code generally dictates that a minimum of 6 spare sprinklers must be kept on hand. This requirement ensures that in the event of a sprinkler failure or damage, there are sufficient replacements available to maintain the integrity and effectiveness of the fire protection system.

The rationale behind this specific number is based on practical considerations for maintenance and quick response. Having 6 spare sprinklers allows for a reasonable buffer to address any immediate needs for repairs or replacements that could arise, ensuring that the system remains operational without significant downtime.

In contrast, the other options do not align with the regulatory standards typically outlined in the codes governing fire protection systems. Fewer spare sprinklers might not adequately cover potential needs for maintenance or repairs, whereas having more than the required number would result in unnecessary inventory and may increase costs without providing proportional benefits. Thus, maintaining 6 spare sprinklers strikes an effective balance between preparedness and resource management within the facility.