A building with 630 sprinklers requires testing for how many?

In testing fire sprinkler systems, the number of sprinklers to be tested typically depends on the total number of sprinklers installed in the system. According to the NFPA guidelines, when a sprinkler system includes more than 100 sprinklers, you are required to test at least 7 sprinklers, with an additional sprinkler added for every additional 100 over that initial amount of 100.

Since the building in question has 630 sprinklers, the calculation is as follows: the first 100 sprinklers require 7 tests, and then for the additional 530 sprinklers (which is 5 times over the initial 100), you add an additional 5 sprinklers to the minimum requirement of 7. This results in a total of 12 sprinklers that should be tested, adhering closely to the standards set out for fire sprinkler systems.

The correct selection of testing 7 sprinklers as indicated in option B aligns perfectly with this standard for significant installations. This ensures a sufficient representation of the sprinklers throughout the system while maintaining appropriate safety measures. Testing this number provides a representative assessment of the functioning of the entire sprinkler system, which is vital for fire safety compliance and effective risk management in commercial buildings.