It is commonly used to replace or add sections of pipeline without the interruption of service for air, gas, water, steam, and petrochemical distribution systems. A procedure used in the repair, maintenance and services activities which involves welding on a piece of equipment (pipelines, vessels or tanks) under pressure, in order to install connections or appurtenances. Any source of electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or other energy. Push buttons, selector switches and other control circuit type devices are not energy isolating devices.Įnergy source. A mechanical device that physically prevents the transmission or release of energy, including but not limited to the following: A manually operated electrical circuit breaker a disconnect switch a manually operated switch by which the conductors of a circuit can be disconnected from all ungrounded supply conductors, and, in addition, no pole can be operated independently a line valve a block and any similar device used to block or isolate energy. Connected to an energy source or containing residual or stored energy.Įnergy isolating device. Other energy isolating devices are capable of being locked out, if lockout can be achieved without the need to dismantle, rebuild, or replace the energy isolating device or permanently alter its energy control capability.Įnergized. An energy isolating device is capable of being locked out if it has a hasp or other means of attachment to which, or through which, a lock can be affixed, or it has a locking mechanism built into it. An affected employee becomes an authorized employee when that employee's duties include performing servicing or maintenance covered under this section.Ĭapable of being locked out. A person who locks out or tags out machines or equipment in order to perform servicing or maintenance on that machine or equipment. An employee whose job requires him/her to operate or use a machine or equipment on which servicing or maintenance is being performed under lockout or tagout, or whose job requires him/her to work in an area in which such servicing or maintenance is being performed.Īuthorized employee.
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