- Standard Number:
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 21, 1991
MEMORANDUM FOR: ALL REGIONAL ADMINISTRATORS FROM: PATRICIA K. CLARK, DIRECTOR DIRECTORATE OF COMPLIANCE PROGRAMS SUBJECT: CONTINUING ENFORCEMENT OF THE LOCKOUT/TAGOUT STANDARD, 29 CFR 1910.147.
The lockout/tagout standard, 29 CFR 1910.147, continues to remain in full effect during the ongoing considerations by the U.S. Court of Appeals for the District of Columbia Circuit. This decision was issued on September 16, by the court.
As you may know, the United Auto Workers (UAW) and National Association of Manufacturers (NAM) filed case #89-1559 pertaining to this standard in the District Court. Unless the court, at some future date, modifies the enforceability of the existing standard, all enforcement personnel shall apply the stipulations of the standard and utilize OSHA Instruction STD 1-7.3, dated September 11, 1990.
Should further information concerning this very important standard be provided by the court, subsequent direction will be provided.