Confined Space Classification Decision Tree

Use this Decision Tree to help you determine if a confined space is a permit-required confined space or a non-permit confined space.

1. Do You Have Any Confined Spaces in Your Workplace? [  ] Yes  [  ] No

Explanation: A space is considered a confined space if:

• It’s big enough and so configured that a worker can enter it bodily and perform work inside;
• It has limited or restricted means of entry or exit, e.g., tanks, vessels, silos, storage bins, hoppers, vaults and pits; and
• It’s not designed for continuous occupancy.

Instructions: If there aren’t any spaces like this in your workplace, […]