Standard Interpretations are letters or memos written in response to public inquiries or field office inquiries regarding how some aspect of or terminology in an OSHA standard or regulation is to be interpreted and enforced by the Agency. These letters provide guidance to clarify the application of an established OSHA standard, policy, or procedure, but they may not, in themselves, establish or revise OSHA policy or procedure or interpret the OSH Act. They must specifically cite the source policy or procedure document they interpret.
- 1910.155 - Clarification of incipient stage fire and interior structural fire fighting. - 12/02/1981
- 1910.155(c)(26) - Classification of fires; respiratory protection to extinguish fires. - 07/08/2002
- 1910.155(c)(26) - Interpretation of OSHA's Fire Brigade Standard concerning the use of SCBAs by incipient stage fire brigade members - 04/09/1990
- 1910.155(c)(27) - Whether inspections for portable fire extinguishers can be reduced from monthly to quarterly intervals. - 11/29/2006
- 1910.155(c)(3)(iv)(A) - NRTL Certification for New Product Design - [OSH Act of 1970 - Section 5(a)(1)] - 08/04/2021
- 1910.155(c)(41) - Actual live fire not necessary in "hands on" practice training - 07/02/1991