What is required by NFPA 13 regarding spare stocker sprinklers?

NFPA 13, which provides the standards for the installation of sprinkler systems, emphasizes the importance of maintaining spare stock of sprinklers that can be used for replacements. One key requirement is that spare stock sprinklers must be inspected regularly to ensure they are in good condition and ready for use if needed. Quarterly inspections help in identifying any issues such as corrosion or damage that could affect their functionality during an emergency.

This requirement not only ensures that the sprinklers remain effective but also aligns with the overall safety and operational readiness of the fire protection system within a building. Proper inspection intervals help to maintain compliance with NFPA standards and ensure that the building is adequately protected in the event of a fire. Therefore, the correct answer focuses on the regularity and thoroughness of inspections required by NFPA 13.