🔍 Key Concepts

• Enclosed space entry procedures on tank vessels • Dangers of toxic/oxygen-deficient atmospheres and flammable vapors in pump rooms • Emergency rescue equipment required when entering a hazardous atmosphere

💭 Think About

• If someone collapsed in a pump room, what is the most likely hazard that caused them to become unconscious? • Which listed equipment actually provides you with breathable air independent of the atmosphere in the pump room? • In a flammable vapor environment, which items on the list might be dangerous to use or give a false sense of safety?

✅ Before You Answer

• Identify which choice provides independent air supply, not just filtration or detection • Eliminate any options that do not address both breathing safety and safe retrieval of the rescuer • Consider which equipment would be required by company/ISGOTT/enclosed space entry procedures for a rescue in a potentially toxic or oxygen-deficient space