🔍 Key Concepts

• 46 CFR requirements for cargo pumprooms on tank vessels carrying flammable/combustible liquids • Difference between access from open deck vs. through interior spaces (like accommodations, machinery, galleys) • How regulations treat sources of ignition and enclosed spaces near cargo areas

💭 Think About

• Think about where cargo vapors are most likely to accumulate and what type of access will best allow vapors to disperse safely. • Consider whether regulations prefer people to pass through enclosed accommodation/working spaces, or directly from the weather deck, when entering a cargo pumproom. • Ask yourself which options would minimize the risk that cargo vapors could reach living or machinery spaces where ignition sources exist.

✅ Before You Answer

• Verify what 46 CFR says about required access route to cargo pumprooms on tank vessels. • Check whether the rule speaks in terms of a specific distance (feet) or a type/location of access (e.g., open deck). • Confirm whether regulations require access to be isolated from ignition sources, or only from ventilated areas, or from open deck specifically.