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
10/29/1986	Requirements relative to the use of anhydrous ammonia in Diazo Reproduction machines.	1910.111(b), 1910.111(e)
10/25/1986	Interpretation on availability of emergency information under the Hazard Communication Standard.	1910.1200(g)(2)(xii)
10/24/1986	Standards for scaffolds do not prohibit the intermingling of scaffolding components.	1926.451
10/21/1986	Clarification of voltage classification for electric distribution and transmission lines.	1926.550
10/15/1986	Target organ labeling requirements for shipped containers.	1910.1200(f)(5)(ii)
10/10/1986	Field calibration of noise dosimeters.	1910.95
10/06/1986	Transfer of Class IA liquids from polyethylene drums.	1910.106(e)(6)(ii), 1910.106(h)(7)(i)(b)
10/03/1986	Electric utility industry concerns.	1926.417, 1926.402, 1926.432, 1926 Subpart K
10/02/1986	High speed cobalt steel drill bits evaluated as a "article" under the Hazard Communication Standard.	1910.1200
09/26/1986	General information related to the Hazard Communication standard.	1910.1200
09/26/1986	Handling and Use of Flammable Liquids.	1910.106
09/25/1986	Respirator fit testing requirements in the revised asbestos standard.	1910.1001
09/19/1986	The storage and handling of flammable and combustible liquids in Clairol's Stamford warehouse.	1910.106, 1910.106(d), 1910.106(d)(5)(i), 1910.106(d)(5)(vi), 1910.106(d)(5)(vi)(b), 1910.37, 1910.37(b)
09/16/1986	Hazard Communication Standard as it applies to wholesalers and distributors of hazardous chemicals.	1910.1200
09/12/1986	Fire equipment training requirements.	1910.157, 1910.157(a), 1910.157(b), 1910.38, 1910.39
09/09/1986	Labeling of Formaldehyde-Containing Products Under the Hazard Communication Standard	1910.1200(f)
09/05/1986	Clarification of OSHA's regulations formerly codified at 1518.751(c)(i), now 29 CFR 1926,751 (c)(2).	1926.751
09/05/1986	Testing requirements for the power units or manually operated winches of single-point adjustable suspension scaffolds.	1910.28, 1926.451
09/05/1986	Applicability of 29 CFR 1926.451(a)(4).	1926.451
09/05/1986	Clarification of 1926.451(c) concerning the intermingling of tube and coupler scaffold components.	1926.451

Letters of Interpretation

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