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.
- 1910.169 - ASME Boiler and Pressure Vessel Code - Stop valves upstream of relief valves. - 04/06/1981
- 1910.169 - Requirements for air receivers installed after August 27, 1971 and periodic retesting. - 05/08/2008
- 1910.169 - Requirements for off highway vehicles being exported from the UK to the USA. - 01/24/1980
- 1910.169(a)(2)(i) - Requirements for air receivers installed after August 27, 1971 and periodic retesting. - 05/08/2008
- 1910.169(b)(3) - Rules requiring safety check valves on compressed air equipment. - 04/07/1995