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
04/26/1990	Clarification of 29 CFR 1910.1047(h)(2) Requirements for Emergency EtO Limit	1910.1047
04/24/1990	Training requirements in 29 CFR 1910.120 concerning hazardous waste cleanup operations.	1910.120, 1910.120(e)
04/18/1990	Occupational injury statistics relating to cumulative trauma disorders.
04/09/1990	Interpretation of OSHA's Fire Brigade Standard concerning the use of SCBAs by incipient stage fire brigade members	1910.155(c)(26), 1910.156
04/05/1990	Answers to questions regarding the training requirements of 1910.120	1910.120, 1910.1200
04/05/1990	Acceptability of annual inspections of bakery ovens by Bakery Services Inc.	1910.263
04/04/1990	Effectiveness of the Glove Box for removal of asbestos-containing pipe insulation.	1926.1101(g)(5)(iv)
04/04/1990	Letter to Diesel Fuel Manufacturers	1910.1200
04/04/1990	Application of 1910.120 to cleanup of nuclear and hazardous waste	1910.120
04/03/1990	Hazard Communication Standard.	1910.1200
03/30/1990	Underground Storage Tanks	1910.120
03/30/1990	Workplace standards establishing what concentration of tobacco smoke is "too much."
03/26/1990	Use of resheathing instruments or forceps is permitted for recapping of needles
03/22/1990	Interpretations of the Hazardous Waste Operations and Emergency Response Standard.	1910.120
03/21/1990	Machine guarding for drilling operations.	1910 Subpart O, 1910.212(a)(1)
03/20/1990	HCS on Hazard warnings required on product labels	1910.1200(f)
03/19/1990	Recommendations to Increase Availability of SAVES to the Field	1910.1200, 1910.110, 1926.702
03/16/1990	Secretary's Order 1-90 on delegation of authority and responsibilities on whistleblower statutes
03/15/1990	The proper handling of compressed gas cylinders particularly with reference to the moving of cylinders from place to place.	1910.101
03/15/1990	Information relative to handrails (guardrails) provided by OSHA offices at Denver and San Francisco.	1910.35

Letters of Interpretation

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