Confined Space - Knowledge Center

With approximately 1.6 million workers entering confined spaces each year, how to keep these workers safe is a topic worth discussing. In fact, OSHA estimates that employers fully complying with safety standards would prevent 53 deaths, 5,000 lost days, and 5,700 other accidents annually. Unfortunately, a NIOSH review determined that many injuries and fatalities related to confined spaces happened simply because employers and their workers failed to recognize, plan, and control for the hazards related to this type of work. With proper diligence, you can help your employees stay safe in these challenging conditions.

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Join Honeywell Miller’s Fall Protection Expert, Tom Dillon, as he walks you through dealing with confined spaces on your work site. Learn the questions that help determine the safest confined space equipment, the considerations for (more...)

What’s in, what’s out, what’s new, and what’s neededIn 1993 OSHA enacted 29 CFR 1910.146 “Permit-Required Confined Spaces.” In 2015, a major new confined space regulation, 1926 Subpart AA, expanded (more...)

Confined Space Terms

More Confined Space Content

What is a hazardous atmosphere?

According to OSHA, a “hazardous atmosphere” is an atmosphere that may expose employees to the risk of death, incapacitation, impairment of ability to self-rescue, injury...

What is oxygen deficiency?

Fresh air contains approximately 20.9% oxygen (O2). According to OSHA, atmosphere that contains less than 19.5% by volume is hazardous due to oxygen deficiency. As the...

What is a confined space?

According to 29 CFR 1910.146, a confined space is characterized by the simultaneous existence of three conditions:It must be large enough and so configured that it is...

What is a hazardous combustible gas atmosphere?

In order for an atmosphere to be capable of burning explosively, four conditions must be met.Adequate oxygenAdequate fuelA source of ignitionSufficient molecular energy...

What is a permit required confined space (PRCS)?

Many confined spaces are associated with serious safety hazards, and require special procedures to ensure worker safety.According to 29 CFR 1910.146, a permit-required...

What kinds of sensors are used to detect LEL combustible gas?

Confined space instruments almost always include a sensor used to measure percent LEL combustible gas. There are two types of widely used LEL sensors; catalytic...