What the Law Required Before Anyone Touched That Machine
The lockout standard's scope, under 29 C.F.R. § 1910.147(a)(1), covers "the servicing and maintenance of machines and equipment in which the unexpected energization or start up of the machines or equipment, or release of stored energy could cause injury to employees." It sets what the regulation calls "minimum performance requirements" for controlling that energy.
Stored energy is the power that can remain in a machine after it is switched off: pressure in hydraulic lines, compressed air in pneumatic systems, a charge left in electrical components, a raised part that can fall under gravity, heat, and chemical energy in lines or vessels. A machine can look dead and still move.
If your injury happened in certain settings, this standard may not be the starting point at all. The standard does not cover construction and agriculture employment; employment covered by parts 1915, 1917 and 1918 of Title 29; installations under the exclusive control of electric utilities for power generation, transmission and distribution; exposure to electrical hazards from work on conductors or equipment in electric-utilization installations, which subpart S covers; and oil and gas well drilling and servicing. Workers in those settings may be governed by different rules, which changes how a case is examined.
Where the standard applies, three requirements usually matter most, because each one describes a duty someone either met or did not.
- Under 29 C.F.R. § 1910.147(c)(1), the employer must establish an energy control program consisting of energy control procedures, employee training and periodic inspections. Its aim is that equipment is isolated from its energy source and rendered inoperative before servicing begins.
- Under 29 C.F.R. § 1910.147(c)(4), energy control procedures must generally be developed, documented and used. The regulation sets out a narrow exception that applies only when all eight of its listed conditions exist.
- Under 29 C.F.R. § 1910.147(f)(2), when outside servicing personnel do covered work, "the on-site employer and the outside employer shall inform each other of their respective lockout or tagout procedures."
For someone who was hurt, these requirements work as a map: they show which company was expected to write, train, inspect and communicate, and so where a breakdown may have occurred. Whether the standard applied to the work you were doing is a factual question, and a case can turn on it. One thing you might weigh is what the task actually was: servicing, cleaning or clearing a jam, as opposed to normal production work.