OSHA 10-Hour Construction ReviewFocus Four HazardsEasy
A construction worker is assigned to clean out a large, enclosed tank that was previously used to store chemicals. The tank has limited entry and exit points, poor ventilation, and a potential for hazardous fumes. Before entry, what must be established for this work area?
- AOnly a respirator and gloves, as long as the tank is empty.
- BA general work permit from the site supervisor.
- CA 'hot work' permit, regardless of whether welding is involved.
- DA confined space entry program and permit.
Show answer & explanationAnswer & explanation
Correct answer: D. A confined space entry program and permit.
The description of the tank (limited entry/exit, poor ventilation, potential for hazardous fumes) clearly identifies it as a permit-required confined space. OSHA's Confined Spaces standard (1926.1200) requires a comprehensive confined space entry program and a specific entry permit before any worker can enter such a space.
Why the other options are wrong
- A. PPE is necessary, but it's only one component of a much larger safety program required for confined spaces.
- B. A general work permit is insufficient for the specific hazards of a confined space.
- C. A 'hot work' permit is for operations involving open flames or heat, which is a separate consideration from confined space entry hazards.
Permit-Required Confined Space Entry
A permit-required confined space is an enclosed area that has limited means of entry/exit, is not designed for continuous human occupancy, and contains or has the potential to contain recognized serious hazards. Entry requires a specific program and permit.
- Hazards include atmospheric (toxic, flammable, oxygen-deficient), engulfment, and crushing.
- A 'Confined Space Entry Permit' outlines procedures, hazards, and emergency plans.
- This falls under 'Caught-In/Between' hazards due to potential engulfment or entrapment.
Memory trick: Permit First, Test Air, Attendant Ready, Rescue Near.