🔍 Key Concepts

• Fire main system requirements in 46 CFR for cargo and passenger vessels • Purpose of a required fire pump versus convenience/service uses (washdown, ballast, etc.) • Why the fire main system must remain immediately available in an emergency

💭 Think About

• Ask: What is the primary, legally required function of a fire pump, and can that function ever be compromised by other uses? • Think about which condition(s) ensure that enough pressure and capacity are still available on the fire main system during a fire. • Consider whether the regulations focus more on relief valves and pressure control, or on making sure a dedicated pump is always ready for firefighting.

✅ Before You Answer

• Verify which option best protects the continuous availability of firefighting water pressure on the fire main. • Check if regulations require at least one fully ready, required fire pump solely for the fire main at all times. • Confirm whether pressure control devices alone (relief valves, reducing stations, gauges) are enough to meet the intent of fire safety rules.