What is the minimum flow rate for a hydrant to be painted light blue according to NFPA 291?

The reasoning behind the correct choice being 1500 gallons per minute is rooted in the guidelines set forth by NFPA 291, which establishes the standards for identifying fire hydrant flow rates through color coding. A hydrant painted light blue indicates a high flow capability, specifically signifying that it can deliver a minimum flow rate of 1500 gallons per minute.

This color coding system is essential for fire responders as it provides a quick visual reference when assessing water supply capabilities in an emergency situation. The light blue color helps indicate that the hydrant is capable of supplying a substantial amount of water, which is crucial for effective firefighting operations in areas where high-volume water supply is needed.

Other flow rate values associated with different colors are part of the NFPA guidelines, but the distinguishing mark for light blue specifically establishes that threshold as 1500 gallons per minute, highlighting its significance in ensuring firefighters can quickly identify hydrants that meet their operational needs effectively.