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

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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...

Oxygen enrichment in confined spaces

The concentration of oxygen in confined spaces is a concern from two standpoints. Too little oxygen can cause asphyxiation. Excessively high or "enriched" levels of...

What combustible gases are associated with confined spaces?

Combustible gases and vapors can be produced by materials used or stored in confined spaces, as well as natural processes. The most common combustible gas found in...