Standard Interpretations
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OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1910.333 - Applicability of the new Electrical Safety final rule, Subpart S, to the construction industry - 09/07/1990
- 1910.333 - Detachable vs. permanent side shields for safety glasses; modifications to safety glasses. - 01/29/2007
- 1910.333 - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures. - 07/10/2000
- 1910.333 - Eyeglasses with exposed metal parts. - 12/30/1993
- 1910.333 - Minimum approach distances - 02/26/1996
- 1910.333 - Nonconductive siderails for portable ladders for private or contractual fire departments. - 09/11/1992
- 1910.333 - Rulings or requirements for employees in the electrical trade to wear steel-toe shoes. - 03/17/1993
- 1910.333 - Shutdown and restoration of power to equipment for a phase-to-ground condition. - 05/20/1999
- 1910.333 - Use of verification tags for lockout. - 07/08/2002
- 1910.333(a)(1) - "Continuous industrial processes" and the infeasibility of de-energizing equipment under 29 CFR 1910.333. - 12/19/2006
- 1910.333(a)(1) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures. - 07/10/2000
- 1910.333(a)(1) - OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004. - 11/14/2006
- 1910.333(a)(1) - Safety electrical work practices; motor disconnects;work clearances. - 02/07/1996
- 1910.333(a)(1) - Training and PPE for employees performing tests on equipment. - 06/22/1998
- 1910.333(a)(2) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard. - 10/27/2005
- 1910.333(b) - Applicability of OSHA's LOTO standards; isolation and verification procedures. - 11/16/2000
- 1910.333(b) - Lockout of tagout requirements for electrical hazards - 08/05/2015
- 1910.333(b) - Lockout/tagout: preferred means of energy isolation; non cord-and-plug powered equipment. - 03/22/2000
- 1910.333(b) - Qualified employee requirements for the servicing and maintenance of electrical equipment. - 09/09/1993
- 1910.333(b)(1) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard. - 10/27/2005
- 1910.333(b)(2) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard. - 10/27/2005
- 1910.333(b)(2) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures. - 07/10/2000
- 1910.333(b)(2) - OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004. - 11/14/2006
- 1910.333(b)(2)(iii)(E) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment. - 07/28/2006
- 1910.333(b)(2)(v)(C) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures. - 07/10/2000
- 1910.333(c)(2) - Qualifications for resetting circuits or replacing fuses; electrical enclosures must be approved. - 11/19/2001
- 1910.333(c)(2) - Qualified employee requirements for the servicing and maintenance of electrical equipment. - 09/09/1993