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Confined Space Safety

A confined space is defined as a space configured in a manner that an individual can bodily enter and perform work AND is not designed for continuous employee occupancy AND has limited or restricted means for entry or exit. Some examples of confined spaces include:

  • Crawl spaces 
  • Attics 
  • Tanks
  • Vessels
  • Silos
  • Hoppers
  • Storage bins
  • Vaults
  • Pits

There are two types of confined spaces: Permit required and non-permit required. A permit required confined space contains or has the potential to contain a serious hazard, such as Odeficiency. A non-permit required confined space does not contain any serious hazards but should be constantly monitored for changes. 

This form was developed by NREL to help determine if a confined space is deemed permit required. These spaces are dangerous and should be avoided by anyone without special training. 

Confined Space Evaluation Form