🔍 Key Concepts

• Pump room hazards on tank barges (flammable vapors, explosion risk) • When portable electrical equipment can be safely used in hazardous locations • Conditions like gas-free, inert, or otherwise made safe from flammable vapors

💭 Think About

• Think about what the main risk is when using electrical equipment in a pump room on a tank barge and how regulations try to control that risk. • Ask yourself: which option describes the specific condition of the pump room itself, rather than conditions in surrounding spaces? • Consider whether the rule is trying to protect only the neighboring spaces, or the actual location where the electrical equipment is being used.

✅ Before You Answer

• Verify which choice directly makes the pump room atmosphere safe for electrical equipment use. • Check if any options talk about spaces other than the pump room and whether that would be enough by itself to prevent ignition where the tool is used. • Remember that regulations focus on eliminating flammable vapor presence where the ignition source is located.