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.
- 1926.150 - Portable firefighting equipment. - 04/19/1993
- 1926.150 - The size of fire extinguisher for construction equipment. - 05/26/1995
- 1926.150(c) - Portable extinguisher requirements and standpipe requirements in construction. - 09/18/1975
- 1926.150(c)(1)(ix) - Soda acid and inverted foam extinguishers are not approved portable refighting equipment. - 07/12/2000
- 1926.150(c)(1)(x) - Soda acid and inverted foam extinguishers are not approved portable refighting equipment. - 07/12/2000