Confined Space Signs | Clarion safety Systems

Q: "Does OSHA require confined space signs?"

"OSHA 29 CFR 1910.146(c)(2) requires employers to inform exposed employees of the existence, location and danger of permit-required confined spaces, through danger signs or another equally effective means. Posting danger signs is the most common way to comply."

Q: "What should a confined space sign say?"

"OSHA's standard gives example wording: DANGER, PERMIT-REQUIRED CONFINED SPACE, DO NOT ENTER, or similar language conveying the same message. Many facilities add symbols and entry requirements to strengthen the warning."

Q: "Do non-permit confined spaces need signs?"

"The 1910.146(c)(2) sign requirement applies to permit-required confined spaces. Marking non-permit spaces is not mandated by that provision, though many facilities sign them to prevent confusion and support training."

Confined Space Signs That Reinforce Your Permit Program

Confined space signs put your permit program on the wall, at the exact point where entry decisions get made. OSHA's permit-required confined spaces standard, 29 CFR 1910.146(c)(2), requires employers to inform exposed employees of the existence, location and danger of permit spaces through danger signs or another equally effective means. Clarion Safety's confined space signs combine graphical symbols with the latest OSHA/ANSI Z535.2 formats so the danger is communicated before the point of entry, to trained entrants and unauthorized personnel alike.

What OSHA Requires for Permit-Required Confined Space Signage

The standard itself offers example wording: a sign reading DANGER, PERMIT-REQUIRED CONFINED SPACE, DO NOT ENTER, or similar language, satisfies the notification requirement.

Effective confined space signs typically communicate:

The DANGER signal word, reflecting the severity OSHA assigns to permit spaces - see our danger signs

The permit-required status of the space and the entry prohibition

Symbols that carry the message across language barriers

Signs support the program; they do not replace it. Entry permits, atmospheric testing and attendant procedures under 1910.146 remain the core controls, and signage keeps those controls in front of everyone who approaches the space. For tank, vessel and equipment-mounted warnings, see our confined space labels.

Standardizing signage across your permit spaces? Clarion's standards experts can help you specify consistent, compliant confined space signs. Contact our team to get started.

Frequently Asked Questions About Confined Space Signs

Does OSHA require confined space signs?

OSHA 29 CFR 1910.146(c)(2) requires employers to inform exposed employees of the existence, location and danger of permit-required confined spaces, through danger signs or another equally effective means. Posting danger signs is the most common way to comply.

What should a confined space sign say?

OSHA's standard gives example wording: DANGER, PERMIT-REQUIRED CONFINED SPACE, DO NOT ENTER, or similar language conveying the same message. Many facilities add symbols and entry requirements to strengthen the warning.

Do non-permit confined spaces need signs?

The 1910.146(c)(2) sign requirement applies to permit-required confined spaces. Marking non-permit spaces is not mandated by that provision, though many facilities sign them to prevent confusion and support training.