Mechanical equipment, such as an unguarded agitator, posing a hazard within a permit space must be locked out or tagged.
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.
March 3, 1994
Mr. Clay Detlefsen, Assistant Director
Environmental & Workers Safety Issues
International Dairy Foods Association
888 Sixteenth Street, N.W.
Washington, D.C. 20006
Dear Mr. Detlefsen:
This is in further response to your October 6, 1993 letter, requesting an interpretation of the Control of Hazardous Energy (Lockout/Tagout) standard, 29 CFR 1910.147, with respect to permit space isolation required by 29 CFR 1910.146.