A plumber is tasked with inspecting a large, industrial water storage tank that has been drained. The tank has limited entry and exit points, and ventilation is minimal. Prior to entry, what is the most critical step to ensure safety?

Question: A plumber is tasked with inspecting a large, industrial water storage tank that has been drained. The tank has limited entry and exit points, and ventilation is minimal. Prior to entry, what is the most critical step to ensure safety?

Answer options: ✅ Completing a confined space entry permit and testing the atmosphere for hazardous gases and oxygen levels.

• Wearing a hard hat, safety glasses, and steel-toed boots.
• Ensuring a communication device is available inside the tank.
• Having a fire extinguisher readily accessible near the entry point.

Correct answer: Completing a confined space entry permit and testing the atmosphere for hazardous gases and oxygen levels.

Explanation: For confined spaces, completing an entry permit and atmospheric testing are critical first steps to identify potential hazards like oxygen deficiency or toxic gas presence. While other PPE and equipment are important, they do not address the primary risks associated with confined spaces, which are atmospheric hazards.