Standard Interpretations
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.
- 1926.351 - Frame grounding of arc welding machines. - 04/02/1993
- 1926.351 - Interpretation of "unattended" in 29 CFR 1926.351(d)(1) with regard to electrode holders. - 04/30/2010
- 1926.351 - Propane pre-heaters used to pre-heat steel in field construction. - 12/10/1979
- 1926.351 - Use of portable arc welding machines in inclement weather. - 04/30/2010
- 1926.351(a) - Use of portable arc welding machines in inclement weather. - 04/30/2010
- 1926.351(b) - Use of portable arc welding machines in inclement weather. - 04/30/2010
- 1926.351(b)(2) - OSHA's General Industry standard requires damaged welding leads to be replaced and not to be repaired. - 04/05/2005
- 1926.351(b)(4) - OSHA's General Industry standard requires damaged welding leads to be replaced and not to be repaired. - 04/05/2005
- 1926.351(c) - Use of portable arc welding machines in inclement weather. - 04/30/2010
- 1926.351(d) - Use of portable arc welding machines in inclement weather. - 04/30/2010
- 1926.351(d)(1) - Interpretation of "unattended" in 29 CFR 1926.351(d)(1) with regard to electrode holders. - 04/30/2010