Which type of portable electrical equipment...

🔍 Key Concepts

• Not gas free means there may still be flammable vapors present in the space • Difference between general 'approval by a person' (Master or OCMI) and formal equipment approval standards for hazardous locations • What 'self-contained, battery fed, explosion-proof' implies for ignition sources in a potentially explosive atmosphere

💭 Think About

• Ask yourself which choice removes dependence on the ship’s personnel and instead relies on standardized, pre‑tested explosion protection for hazardous spaces • Consider whether shore‑side regulatory approval of a specific lamp is the same thing as the lamp itself having an explosion‑proof design suitable for flammable atmospheres • Think about which option would minimize the risk of a spark from wiring, plugs, or ship’s electrical system inside a space that may contain flammable gas

✅ Before You Answer

• Verify which option clearly states the lamp is explosion‑proof as a design feature, not just approved by someone • Check whether the power source is self-contained or connected to the ship’s electrical system • Confirm which option best matches standard practice for entering tanks or spaces that are not gas free and may contain flammable vapors

Which type of portable electrical equipment is permitted for use in a compartment that is not gas free?

Explosion-proof lamps that are approved by the Master

Explosion-proof lamps that are approved by the OCMI

No lamps may be approved for use in a compartment that is not gas-free

Approved self-contained, battery fed, explosion-proof lamps

🔍 Key Concepts

💭 Think About

✅ Before You Answer