Cornell University Policy Library -- Policy 2.2
Sequence of Lockout or Tagout System Procedures
Restoring Machines or Equipment to Normal Operations
Acquiring New or Modifying Old Equipment
When More than One Person is Involved
| Subject | Contact | Telephone |
| Policy Clarification | Environmental Health and Safety | (607) 255-8200 |
| Policy Compliance Issues | University Health and Safety Board | (607) 255-4394 |
| Affected Employee/User | A person 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. |
| Affected Unit | Any college, department, center, institute, or business within the university community that contains machinery or equipment subject to lockout or tagout procedures. |
| Authorized Employee/User | A person who locks out or tags out machines or equipment to perform service or maintenance on that particular item. An affected employee/user becomes an authorized employee/user when that employee's duties include performing service or maintenance on machines or equipment covered under this policy. |
| Blocking Tag | A tagout device that indicates the use of chains, wedges, key blocks, adapter pins, or self-locking fasteners for isolating, securing or blocking of equipment from energy sources. |
| Energy Isolating Device | 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. Push buttons, selector switches and other control circuit type devices are not energy isolating devices. |
| Going Through a Tag | A procedure in which a piece of equipment or machinery is started when the lockout/tagout procedure is in place. |
| Hot Tap | A procedure used in repair, maintenance, and service activities that involves welding a piece of equipment (pipelines, vessels or tanks) under pressure to install connections or appurtenances. |
| Lockout | The placement of a lockout device on an energy isolating device according to an established procedure; this ensures that the energy isolating device and the equipment being controlled cannot be operated until the lockout device is removed. |
| Lockout Device | A device that uses a lock, either key or combination type, to hold an energy isolating device in a safe position and prevent the energizing of a machine or other equipment. Included are blank flanges and bolted slip blinds. |
| Normal Operations | The utilization of a machine or other equipment to perform its intended function. |
| OSHA | Occupational Safety and Health Act |
| Owner's Representative | An individual who represents the university in all aspects of: 1) A project when dealing with a contractor; 2) A lease agreement when dealing with a vendor. u Caution: Some leases may define these owner's representatives as "contact persons" or "program directors". |
| Servicing and/or Maintenance | Work place activities such as constructing, installing, setting up, adjusting, inspecting, modifying, and maintaining and/or servicing machines or other equipment. These activities include lubrication, cleaning or unjamming of machines or other equipment and making adjustments or tool changes, where the employee/user may be exposed to the unexpected energization or start up of the equipment or release of hazardous energy. |
| Tagout | The placement of a tagout device on an energy isolating device, according to an established procedure, to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout 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 according to an established procedure, to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout device is removed. |
| University Health and Safety Board | An administrative body responsible for overseeing the health, safety and welfare of the university community. |
The university wishes to prevent injury to employees/users engaged in service or maintenance activities of machines, equipment, or processes where the release of energy may put them at serious risk.
Examples of such machinery or equipment include but are not limited to autoclaves, boilers, electron microscopes, elevators, fan systems, and lasers. Work situations where unexpected energization or start-up can occur include new construction, installation or set-up of equipment, and the adjustment, inspection, maintenance, repair, and service of machines and equipment. Energy types to be considered include electrical, mechanical, hydraulic, pneumatic, chemical, and thermal.
This policy contains procedures for the service and maintenance of equipment and machines where the unexpected energization or start-up could cause injury to employees/users.
Caution: The following situations are not subject to the procedures outlined in this document:
The administrative head of each unit is responsible for the implementation of these procedures to ensure the safety of the employees/users. These procedures apply to the control of energy sources during service, installation, removal, or maintenance of machines or equipment.
Procedures that effect the control of hazardous energy require:
All employees/users, upon observing a machine or piece of equipment that is locked out to perform service or maintenance, must not attempt to start, energize, or use that machine or equipment.
All employees/users must remove a lockout device before leaving the campus upon completion of a job.
Owner's representatives must inform all outside contractors performing work on campus of the university's Lockout/Tagout Policy's procedures and requirements.
The requirements for the use of/installation of energy-isolating devices must be stated in Division I, Contractor's Obligations of the contract specifications.
Whenever a machine or equipment is replaced, repaired, renovated, or modified, or whenever a new machine or equipment is installed, energy-isolating devices that are designed to accept a lockout device must be used.
Violators should immediately be reported to the appropriate administrative head of each unit.
Facilities and Campus Services must keep a master list of all machines and equipment covered by this policy, as well as conduct ongoing surveys of all equipment regulated by this policy. Supplemental lists must be maintained by the administrative head of each unit for areas for which they are responsible.
The lists must include:
2. If you activate a Life Safety System, e.g. fire suppression or fire alarm, you must notify Environmental Health and Safety and the Cornell Police Department.
3. You must notify all affected employees/users that a lockout or tagout system is going to be utilized and give the reason for that utilization because that person will know the type and magnitude of energy that the machine or equipment uses and will be able to explain the hazards involved.
4. If the machine or equipment is operating, you must shut it down by the normal stopping procedure (depress stop button, open toggle switch, etc.).
5. You must operate the switch, valve or other energy isolating device(s) so that the equipment is disconnected from its energy source(s). Stored energy (such as that in springs, elevated machine members, rotating flywheels, hydraulic systems, and air, gas, steam, or water pressure, etc.) must be dissipated or restrained by methods such as repositioning, blocking, bleeding down, etc.
Caution: Substations must be racked down and locked out in case of high voltage electrical distribution systems. At the building end of the feeder, the incoming breaker or switch must also be racked down or opened and locked out. This prevents a back feed on the system through a local buss tie breaker.
6. You must attach the lockout devices to secure the energy isolating devices in the "safe" or "off" position.
7. You must be certain that no personnel are exposed and you must also check that the energy sources have been disconnected by checking the normal operating controls.
Caution: You must return operating controls to their "neutral" or "off" positions after the test.
8. When the use of lockout procedures is impossible, you must clearly place a tagout device to indicate that the operation or movement of energy isolating devices from the "safe" or "off" position is prohibited.
9. When possible, you must place the tags at the same point at which a lockout would have been attached. If this is not feasible, locate the tag as closely as safety allows to the device in a position that will be immediately obvious to anyone who attempts to operate the device.
Caution: Tags may promote a false sense of security.
10. You have now locked out or tagged out the equipment. Do not attempt to operate any switch, valve, or other energy isolating device where it is locked out or tagged out.
11. All locked out equipment must be reported to the shift supervisor when locked out and when returned to normal service.
When you have completed the servicing or maintenance and the equipment is ready to be returned to normal operating condition, you must take the following steps:
Caution: Some types of blocking may require re-energization of
the equipment before the blocking material may be removed safely.
Whenever you replace or repair, renovate or modify a machine or other equipment, or whenever you install new machines or equipment, you must be certain that those machines and equipment are designed to accept a lockout device.
When installing new machinery and/or equipment, be certain to forward the appropriate information to Facilities and Campus Services for inclusion on the master list.
The following criteria must also be met:
When more than one person is required to lockout or tagout equipment, each must place his/her own personal lockout device or tagout device on the energy isolating device(s).
When an energy isolating device cannot accept multiple locks or tags, you must use a lockout or tagout device (hasp) which can accept multiple locks or you must use a single lock to lockout the machine or equipment, placing the key in a lockout box or cabinet which allows the use of multiple locks to secure it.
Each employee/user must use his/her own lock to secure the box or cabinet. When each person no longer needs to maintain his/her lockout protection, that person will remove his/her lock from the box or cabinet.
Requirements for Lockout/Tagout Devices
Lockout and tagout devices must be standardized throughout the university. Each lockout and tagout device must indicate the identity of the authorized employee using the device and must warn against the re- energizing of the equipment. The only acceptable lockout and tagout devices are available at General Stores.
Units must supply all of their authorized employees/users with an adequate number of lockout and tagout devices for their areas of responsibility. These must all be purchased at General Stores.
You must lockout and/or tagout the energy isolating devices with assigned
lock(s) or tag(s).
The lockout/tagout device must be readily identifiable and must not
be used for any purpose other than energy control.
The following conditions must also be met:
The Department of Environmental Health and Safety must provide training to all authorized employees/users to ensure that the purpose and function of the energy control procedures are understood. Environmental Health and Safety must provide employees/users the knowledge and skills necessary for the safe application, usage, and removal of the energy controls that are required. Training sessions must be scheduled on a quarterly basis for any new personnel who may require hazardous energy control training.
2. The administrative head of each unit must forward a list of designated responsible contact persons to Environmental Health and Safety.
3. These lists must be maintained by Environmental Health and Safety.
4. Environmental Health and Safety must ensure that authorized employees/users are familiar with the applicable hazardous energy sources and the methods of isolation or control.
5. Units with affected employees/users must provide specific training
for their respective areas of responsibility. They must also provide the
following:
Environmental Health and Safety must conduct periodic inspections of the Lockout/Tagout Policy procedures during building inspections to ensure that the energy control procedures and requirements are being followed. Additionally, the administrative head of each unit must correct any inadequacies in and/or deviations from the procedure noted during periodic inspection.
Affected Unit Written Procedures
Each affected unit is responsible for developing and maintaining specific energy control procedures for each machine or other equipment within its respective areas of responsibility when any of the following conditions exist:
| You | Read
and understand the Lockout/Tagout Policy.
Comply with its provisions. |
| Affected Unit | Communicate
the provisions of the Lockout/Tagout Policy to all staff.
Develop and maintain written procedures. Provide specific training for areas of responsibility. Develop an internal method of recording compliance with this policy. |
| Environmental Health and Life Safety | Support
the implementation of this policy.
Provide initial training to all employees/users. Inspect university buildings periodically. |