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The obligations and responsibilities of machine manufacturers under the lockout/tagout standard.

Summary A machine builder asked whether OSHA’s lockout/tagout standard applied to manufacturers as well as machine owners. OSHA said new or substantially modified equipment needed energy-isolating devices that accepted lockout devices and believed it could enforce that requirement against both groups, though it had not established a manufacturer-enforcement procedure. OSHA labels the letter archival.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1991-03-08
Date issued
March 8, 1991
Status
Archived by the agency
OSHA labels this an archive document and warns that it may no longer represent OSHA policy.
Status last verified October 9, 2026

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NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

March 8, 1991

Mr. A. R. Grif
Chief Draftsman
Production and Machinery Corporation
[Recipient address omitted]
Dear Mr. Grif:

This is in further response to your letter of December 17, 1990, concerning the obligations and responsibilities of machine manufacturers under the Occupational Safety and Health Administration's standard entitled "the Control of Hazardous Energy Sources (Lockout/Tagout)," (29 CFR 1910.147).

29 CFR 1910.147(c)(2)(iii) states, "After January 2, 1990, whenever major replacement, repair, renovation or modification of machines or equipment is performed, and whenever new machines or equipment are installed, energy isolating devices for such machines or equipment shall be designed to accept a lockout device." This standard requires energy isolation devices for the described machines or equipment to be designed to accept a lockout device. We believe that this standard may be enforced by OSHA against both the owner/operator and the designer/manufacturer, all of whom would therefore be subject to citations and proposed penalties. However, OSHA has not yet established a policy or procedure to enforce the standard against the designer/manufacturer.

As a builder and supplier of coil strip processing machinery, you are of course obligated to provide protection for your own employees as required in the lockout/tagout Standard. Copies of pages 36644 through 36696 of the Federal Register Volume 54, No. 169, are enclosed per your request. In addition, we are enclosing the corrections and amendments to this standard, publishing on September 20, 1990.

Your interest in workplace safety and health is appreciated.

Sincerely,
Gerard F. Scannell
Assistant Secretary

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