According to NFPA 414, how fast must a water tank be filled at an inlet pressure of 80 psi?

The correct answer, which indicates that a water tank must be filled within 120 seconds at an inlet pressure of 80 psi, is based on the standards set by the National Fire Protection Association (NFPA) in its guidelines for airport firefighting equipment. NFPA 414 establishes operational criteria for various fire apparatus, ensuring that they can effectively respond to emergencies in a timely manner.

In this specific instance, the NFPA has determined that at an inlet pressure of 80 psi, it is crucial for efficiency and readiness that water tanks are filled within this 120-second timeframe. This duration is critical for scenarios where rapid deployment of firefighting resources is required, as it allows for quick refilling of water supplies to maintain adequate fire suppression capabilities.

The specified time is indicative of the importance of prompt action in firefighting operations, particularly in an airport environment where the potential for large-scale incidents exists. Thus, adhering to this standard enhances overall safety and operational effectiveness, ensuring that firefighters are well-prepared to tackle fires quickly and efficiently.