An extra supply of at least ______ sprinkler heads must be kept available at all times.

An extra supply of at least ______ sprinkler heads must be kept available at all times.

• A. 3
• B. 6
• C. 4
• D. 8

Answer: (B)

Spare sprinkler heads are kept on hand to replace any head that is damaged, missing, or removed during maintenance or after a discharge, so the fire protection system can be restored quickly. Six is the typical minimum because it covers the common head styles you’ll encounter and provides enough quantity to swap out more than one head if needed without delaying work. A smaller number would risk being short when multiple heads need replacement, while eight exceeds the usual practical minimum for most facilities.

Spare sprinkler heads are kept on hand to replace any head that is damaged, missing, or removed during maintenance or after a discharge, so the fire protection system can be restored quickly. Six is the typical minimum because it covers the common head styles you’ll encounter and provides enough quantity to swap out more than one head if needed without delaying work. A smaller number would risk being short when multiple heads need replacement, while eight exceeds the usual practical minimum for most facilities.