The Control of Hazardous Energy (Lockout/Tagout), 29 CFR 1910.147, standard was promulgated on September 1, 1989, at Federal Register, Volume 54, No. 169, and was effective January 2, 1990, as announced at Federal Register, Volume 54, No. 213, November 6, 1989.
Unfortunately, as with many OSHA requirements, they inform you “what” to do, but not “how” do it, and leave this part up to the employer. The challenge for many employers is the lack of knowledge or experience to effectively implement the OSHA lockout guidelines.
OSHA’s Control of Hazardous Energy standard -- the Lockout-Tagout rule -- addresses the safety of employees engaged in servicing and maintenance activities in general industry when exposure to the unexpected release of hazardous energy is possible.