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Visit the Confined Spaces - Final Rule Page for information on the new final rule.

State Standards

There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements.

This section highlights OSHA standards, directives (instructions for compliance officers), official letters of interpretation of the standards, and national consensus standards related to confined spaces.


General Industry (29 CFR 1910)

Shipyard Employment (29 CFR 1915)

  • 1915 Subpart B, Confined and enclosed spaces and other dangerous atmospheres in shipyard employment
    • 1915.11, Scope, application, and definitions applicable to this subpart
    • 1915.12, Precautions and the order of testing before entering confined and enclosed spaces and other dangerous atmospheres
    • 1915.13, Cleaning and other cold work
    • 1915.14, Hot work
    • 1915.15, Maintenance of safe conditions
    • 1915.16, Warning signs and labels
      • Appendix A, Compliance assistance guidelines for confined and enclosed spaces and other dangerous atmospheres
      • Appendix B, Reprint of US coast guard regulations referenced in Subpart B, for determination of Coast Guard authorized persons


Letters of Interpretation

National Consensus

Note: These are NOT OSHA regulations. However, they do provide guidance from their originating organizations related to worker protection.

American National Standards Institute (ANSI)/American Society of Safety Engineers (ASSE)

  • Z117.1 - 2009, Safety Requirements for Confined Spaces
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