Control of Hazardous Energy Sources (Group Lockout/Tagout).

Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 29, 1991

Mr. Stephen C. Yohay
Jones, Day, Reavis and Pogue
Metropolitan Square
1450 G Street, N.W.
Washington, D.C. 20005-2088

Dear Mr. Yohay:

This is in response to your letter of November 30, 1990, to Mr. Thomas Seymour, Deputy Director of the Directorate of Safety Standards, regarding 29 CFR 1910.147, Control of Hazardous Energy Sources (Lockout/Tagout).

Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

October 27, 2005

Mr. Carl Morgan
Los Alamos National Laboratory
P.O. Box 698
Los Alamos, NM 87544

Dear Mr. Morgan:

OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

November 14, 2006

Ms. Joanne B. Linhard
ORC Worldwide
1910 Sunderland Place, NW
Washington, DC 20036

Dear Ms. Linhard:

Lockout/tagout procedures, including work permits and groups of machines/equipment.

Archive Notice - OSHA Archive

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.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

August 12, 1994

Ms. Joanne B. Linhard
Consultant
Organizational Resources Counselors, Inc.
1910 Sunderland Place, N.W.
Washington, D.C. 20036

Dear Ms. Linhard:

This is in response to your December 20, 1993 letter, requesting interpretation of the Control of Hazardous Energy Source (Lockout/Tagout) standard, 29 CFR 1910.147. Please accept our apology for the delay in responding. Your questions and our replies follow:

Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

 

Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

July 28, 2006

Mr. Rick Kante
Safety Director
Briggs & Stratton Corporation
P.O. Box 702
Milwaukee, WI 53201

Dear Mr. Kante:

Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

December 12, 2012

Mr. Ralph Mosely
REM Safety Consultants, Inc.
3963 South Highway 97, Ste #317
Sandy Springs, Oklahoma 74063

Dear Mr. Mosely:

Thank you for your November 11, 2011, letter to the Occupational Safety and Health Administration's (OSHA's) Directorate of Enforcement Programs (DEP). You asked questions about OSHA's general industry requirements for the control of hazardous energy. We apologize for the delay in responding.