Confined Space Entry
Analyze the project for the potential for confined spaces. Workers should not enter confined spaces without proper training and management authorization.
Workers should not enter confined spaces without proper training and management authorization.
A confined space is defined as the following:
- a space that is not designed for continuous employee occupancy
- is large enough and so configured that a person can bodily enter into and perform assigned work
- has limited or restricted means for entry of exit
Confined spaces that may have a hazardous atmosphere require special precautions. Hazardous atmospheres are those that may expose employees to the risk of death, incapacitation, and impairment of ability to self-rescue caused by:
- flammable atmospheres - gases or oxygen level above 23.5%
- airborne combustible dust or fibers - sugar, plastic, wood, etc.
- oxygen-deficient atmosphere - concentration below 19.5
- toxic gases, vapors, or fumes - carbon monoxide, hydrogen sulfide etc.
- high concentration of inert gases - nitrogen, helium, radon, etc.
Knowledge Check Choose the best answer for the question.
5-8. Oxygen levels in confined spaces are considered deficient when the concentration is below _____.
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