A protected facility with 250 sprinklers should have how many spare sprinklers?

A protected facility with 250 sprinklers should have how many spare sprinklers?

• A. 6
• B. 4
• C. 8
• D. 10

Answer: (A)

Spare sprinkler heads are kept on hand so you can quickly replace a damaged or activated head without delaying repairs or system service. The amount kept isn’t arbitrary; it follows a general stocking guideline tied to the size of the system. For a protected facility with up to about 300 sprinklers, the standard practice is to keep six spare sprinklers of each type installed. With 250 sprinklers, you fall into that range, so six spare heads is the recommended amount. These spares should match the installed heads in type and rating and be stored in a readily accessible location. Four spares would typically be considered insufficient for a system of this size, while eight or ten spares would exceed the common minimum stock for this range. If the facility uses more than one head type (upright, pendant, etc.), you would maintain six spares for each type, not just six in total.

Spare sprinkler heads are kept on hand so you can quickly replace a damaged or activated head without delaying repairs or system service. The amount kept isn’t arbitrary; it follows a general stocking guideline tied to the size of the system. For a protected facility with up to about 300 sprinklers, the standard practice is to keep six spare sprinklers of each type installed. With 250 sprinklers, you fall into that range, so six spare heads is the recommended amount. These spares should match the installed heads in type and rating and be stored in a readily accessible location.

Four spares would typically be considered insufficient for a system of this size, while eight or ten spares would exceed the common minimum stock for this range. If the facility uses more than one head type (upright, pendant, etc.), you would maintain six spares for each type, not just six in total.