This procedure is used to ensure that the machine or equipment is stopped, isolated from all potentially hazardous energy sources and locked out before employees perform any servicing or maintenance where the unexpected energization or start-up of the machine or equipment or release of stored energy could cause injury. Authorized Employee - A person who locks out or tags out machines or equipment in order to perform servicing or maintenance on that machine or equipment. Energized - Connected to an energy source or containing residual or stored energy. Manual disconnect switches. Manually operated master control power gates which, when opened, remove all external power from a system or line.
Line valves and flow valves.
Energy source - Any source of electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or other energy. Lockout - The placement of a lockout device on an energy isolating device, ensuring that the energy isolating device and the equipment being controlled cannot be operated until the lockout device is removed. Tagout device - A prominent warning device, such as a tag and a means of attachment, which can be securely fastened to an energy isolating device to indicate that the energy isolating device and the equipment being controlled may not be operated until the Tagout, device is removed. The tag is designed to be self-locking and requires a minimum unlocking force of 50 pounds or mechanical means to remove it. Blockout - The placement of wedges, chains, key blocks, adapter pins, or other appropriate hardware to prevent the release of energy which endangers personnel.