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Standards

State Standards

Twenty-five states, Puerto Rico and the Virgin Islands have OSHA-approved State Plans and have adopted their own standards and enforcement policies. For the most part, these states adopt standards that are identical to Federal OSHA. However, some states have adopted different standards applicable to this topic or may have different enforcement policies.

This section highlights OSHA standards, directives (instructions for compliance officers), standard interpretations (official letters of interpretation of the standards), and national consensus standards related to the permit- and non-permit-required confined spaces in the petrochemical industry.

OSHA

Frequently Cited Standards

OSHA maintains a listing of the most frequently cited standards for specified 6-digit North American Industry Classification System (NAICS) codes. Please refer to OSHA’s Frequently Cited OSHA Standards page for additional information. For Drilling Oil and Gas Wells and Support Activities for Oil and Gas Operations, use NAICS code 213111 and 213112 in the NAICS search box.

General Industry (29 CFR 1910)

Construction Industry (29 CFR 1926)

Directives

Standard Interpretations

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 Safety Requirements for Confined Spaces

American Petroleum Institute (API)

API develops standards that identify and support proven, sound engineering and operating practices, and safe, interchangeable equipment and materials, for use in the petroleum industry. API is an accredited Standards Developing Organization that meets the due process requirements of the American National Standards Institute (ANSI).

  • API 650, Welded Tanks for Oil Storage, 11th Edition, Addendum 2, November, 2009.
  • API 653, Tank Inspection, Repair, Alteration, and Reconstruction, 4th Edition, Addendum 1, August 2010.
  • API 2015, Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks, Sixth Edition, August 2001

National Fire Protection Association

  • 326, Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair. (2005) Edition.

Steel Tank Institute

  • SP001, 4th Edition, July 2006, "Standard for the Inspection of Aboveground Storage Tanks"
  • SP031, 4th Edition, November 2008, "Standard for Repair of Shop Fabricated Aboveground Tanks for Storage of Combustible & Flammable Liquids"
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