Lockout is the placement of a lockout device on an energy-isolating device, in accordance with an accepted established procedure, that ensures the energy isolating device and the equipment being controlled cannot be operated until the lockout device has been removed.
A "lockout device" is just that - a locking device that provides a positive means for rendering a switch, valve, or any energy source inoperable. The device may be a padlock, restraining bar, chain, or any device that positively prevents a machine or piece of equipment from becoming "energized" or from releasing stored energy.
Tagout is the placement of a tagout device on an energy isolating device, in accordance with an accepted established procedure, which effectively communicates that the energy isolating device and the equipment being controlled are not to be operated until the tagout device is removed.
A "tagout device" serves as a prominent warning that can be securely attached to an energyisolating device, which clearly communicates that a tagout condition exists. This tag is a means of identifying who locked out the machinery; the date and time of day the tagout took place, and the department for which the person works. Additional information may be placed on the tag such as beeper number, extension number, etc. Tags shall be durable and securely fastened to the energy-isolating device so as not to fall off. Tags are NEVER to be removed by anyone except the individual who is responsible for the lockout/tagout procedure.
Permit Issuer
An employee, familiar with the process and its hazards, who issues the Lockout/Line Break Permit and personally witnesses the field inspection steps on the Permit to ensure that it is safe to begin work.
Authorized Worker
Person(s) who lock out equipment in order to perform “hands on” work of that equipment. A Permitted Issuer and Permitted Worker may be the same person.
Affected Employee
A person whose job requires him/her to operate the equipment on which servicing or maintenance is being performed under Lockout/Tagout, or whose job requires him/her to work in the area where Lockout/Tagout is being performed.
Energy Source
Any source of energy, including but not limited to, electrical, mechanical, hydraulic, pneumatic, chemical, thermal (greater than 140 degrees), gas, springs, elevated machine members, gravity, water pressure, steam or nuclear.
Line Break
The physical opening of any line or equipment that may result in the exposure to a hazardous material.
Lockout Box
Lockout boxes are used for group lockouts when the normal procedure for locking out equipment is impractical. An example, where a lock-out box may be used is a shutdown situation that requires several pieces of equipment and energy sources to be locked out at time.
Lockout Device
A device that utilizes a positive means to hold an energy isolating device in the safe position and prevent the energizing of a machine, valve or other equipment.
Lockout/Line Break Permit
A written permit that is used as a checklist to ensure that all hazardous energy sources have been identified and placed in a zero mechanical state. The permit will include a complete description and identification of the equipment. (Appendix A)
Log
Logs are used primarily for group lockouts. Logs are used when a large number of people are working on equipment in association with lock-out boxes. Each person working on specific equipment as part of the group lockout, is required to sign the log (in addition to placing a personal lock on the lock-out box), before beginning and at the completion of work.
Multiple Locking Device
A multiple locking device is used in situations where more than one person is working on a piece of equipment or more than one person is working in an area covered by the lockout. The multiple locking device allows a number of people to lockout the same piece of equipment at the designated energy isolating device.
Personal Lock
A lock device used in a lockout in which the person requiring lockout protection is in sole control of the key.
