Letters of Interpretation

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.

These letters of interpretation and the standards they address may not apply to OSHA State Plans. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or additional requirements. Please see OSHA-approved State Plans for more information.

Date	Title	Standard Number
04/20/1993	Clarification on first aid requirements for hazardous waste sites.	1910.120, 1910.120(e)(3)(ii), 1910.120(l)(2)(viii), 1910.151, 1910.151(b), 1910.1030
04/19/1993	Portable firefighting equipment.	1926.150
04/19/1993	Toilets are not required at construction jobsites if transportation is readily available to nearby facilities.	1926 - Table of Contents
04/19/1993	Labeling of products currently under FDA review.	1910.1030
04/19/1993	Cleaning of police uniforms as specified by bloodborne pathogens standard	1910.1030
04/16/1993	Training requirements for emergency and post-emergency response to marine-based oil spills.	1910.120(a)(3), 1910.120(q)(6)(iii), 1910.120(q)(6)
04/15/1993	Tabletop centrifuges designed for use in physician offices and laboratories.	1910.212
04/15/1993	Electrical utility underground workplaces and the permit-required confined space standard.
04/14/1993	HHCs as it applies to how high must the percentage of a chemical be to require compliance.	1910.119
04/14/1993	Evaluation and use of radiofrequency protective clothing	1910.132
04/14/1993	Interlock requirements for centrifuges.	1910.212
04/14/1993	Respiratory protection as it relates to oil fields	1910.134
04/14/1993	Propane as a fuel for ovens; Chlorine storage exceeding 1500 pounds.	1910.119
04/13/1993	Albumin Human USP and the standard.	1910.1030
04/08/1993	Extension cord equipped with a built-in "continuity tester".	1910.304
04/06/1993	Use of overhead bridge and gantry cranes as work platforms.	1910.179
04/02/1993	Proper recording of a hepatitis A exposure for OSHA injury and illness recordkeeping purposes.	1904 - Table of Contents
04/02/1993	Frame grounding of arc welding machines.	1926.351
04/01/1993	Recording cases on the OSHA log that involve Bloodborne Pathogens.	1904 - Table of Contents
04/01/1993	Meeting labeling requirements of hazard communication standard for slag wool.	1910.1200(f)

Letters of Interpretation

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