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.

Filters


Date Title Standard Number
Two-inch clearance must be maintained for overhead bridge cranes. 1910.179(b)(6)(i)
Coverage of the BBP standard for Good Samaritan acts and personal medical conditions. 1910.1030(a)
Storage of flammable liquids and corrosives in the same cabinet. 1910.106, 1910.1200(g)
A sink-on-a-drum style parts cleaner is a dip tank. 1910.123(a), 1910.123(b)
Hepatitis B vaccine and titer requirements for firefighters, police, and EMTs. 1910.1030(f)(1)
Feasible ventilation controls for large containments of abrasive blasting operations 1926.62
Use of multi-station electric pump nebulizer and the squeeze bulb Bitrex for QLFT. 1910.134(f), 1910.134 App A
Significance of ANSI standards with respect to OSHA requirements, specifically A92.6-1999. 1926.453, 1910.1, 1910.6
Use of cab shields on haulage vehicles with 4 ft separation between cab and dump truck body. 1926.601(b)(6)
Fall protection requirements and available alternative procedures for completed/inhabited residential wireless phone system antenna installation. 1926.502, 1926.502(k)
OSHA coverage does not extend to home-based care for the elderly. 1975.6
Requirements for scaffold grade lumber; qualifications of qualified/competent persons for grading scaffold lumber. 1926.451(b), 1926.452(e), 1926.452(p)(4), 1926.450(b), 1926 Subpart L App A
Use of engineering and work practice controls during pouring of blood or OPIM. 1910.1030(d)(2)(i), 1910.1030(c)(1)(iv), 1910.1030(d)(4)(iii)
OSHA's fixed ladder requirements do not apply to vehicle-mounted fixed ladders. 1926.1053, 1926.1050(b)
Acceptability of Task-Based Noise Exposure Assessment Modeling (T-BEAM). 1910.95(d)(1)(i), 1910.95(d)(1)(ii)
Determination of safety for existing process equipment is required prior to start-up. 1910.119(d)(3)(iii)
Retailer exemption from the PSM standard for anhydrous ammonia dealers. 1910.119(a)(2)(i)
Employers must provide exposed employees access to their medical and exposure records. 1910.1020(d), 1910.1020(e)
Hazards of Inipol EAP22 used during cleanup of oil spills. 1910.1200
Application of 1926.451(b)(3)(ii) to "Drivit" (synthetic stucco) systems. 1926.451(b)(3)(ii)