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1、LOCKOUT/TAGOUT TRAINING PROGRAMJohn A Braun, CSPUniversity of Nevada, RenoLOCKOUT/TAGOUT covers the servicing and maintenance of machines and equipment in which the unexpected start-up or the release of stored energy could cause injury to employees.DefinitionsAuthorized employee An employee who perf
2、orms servicing or maintenance on machines and equipment. Lockout or tagout is used by these employees for their own protection.Affected employee An employee who performs the duties of his or her job in an area in which the energy control procedure is implemented and servicing or maintenance operatio
3、ns are performed.Types of EnergyChemicalElectricalGravityHeatHydraulicMechanicalNatural GasPneumaticPositional or storedSpringsSteamThermalOtherScope and ApplicationCovered ActivitiesConstructing, installing, setting up, adjusting, inspecting, modifying, maintaining and/or servicing machines or equi
4、pment where employees could be exposed to the unexpected energizing or release of hazardous energyScope and ApplicationlThe employee must either remove or bypass machine guards or other safety devices, resulting in exposure to hazards at the point of operation.Lockout/Tagout rules apply (the equipme
5、nt must be de-energized and locks or tags must be applied to the energy-isolation devices) to servicing and maintenance activities when:Scope and Application (cont.)lThe employee is required to place any part of his or her body in contact with the point of operation of the operational machine or pie
6、ce of equipment.lThe employee is required to place any part of his or her body into a danger zone associated with a machine operating cycle.Lockout vs. TagoutlIf an energy-isolating device is capable of being locked out, it must be locked out unless it can be shown that a tagout system provides full
7、 employee protection.Types of DevicesWritten ProcedureslMust identify the information that authorized employees must know in order to control hazardous energy during service or maintenance.Written ProcedureslPreparation for shutdownlShutting down the equipmentlEquipment isolationlApplication of Lock
8、out/Tagout deviceslRelease of stored energylVerifying equipment isolationPreparation for ShutdownlKnow the types and amounts of energy that power it.lKnow the hazards of that energy.lKnow how the energy can be controlled.Shutting Down the EquipmentlShut the system down by using operating controls.lF
9、ollow whatever procedure is right for the equipment to avoid endangering anyone during shutdown.Equipment IsolationlOperate all energy-isolating devices so that the equipment is isolated from its energy sources.lBe sure to isolate all energy sources (secondary power supplies as well as the primary s
10、upplies).lNever remove a fuse instead of disconnecting.Application of DeviceslAll energy-isolating devices are to be locked, tagged or both.lOnly standardized devices can be used and they are not to be used for anything else.lUse a lockout device if your lock cannot be placed directly on the energy
11、control.lWhen lockout is used, every employee in the work crew must attach his or her personal lock.Release of Stored EnergylInspect the system to make sure all parts have stopped moving.lRelieve trapped pressure.lBlock or brace parts that could fall due to gravity.lBleed lines and vent valves open.
12、lIf stored energy can reaccumulate, monitor it to make sure it stays below hazardous levels.Verifying Equipment IsolationlMake sure all danger areas are clear of personnel.lVerify that the main disconnect switch or circuit breaker cant be moved to the on position.lPress all start buttons and other a
13、ctivating controls on the equipment itself and return controls to the off position when the testing is complete.Performing the WorklLook ahead and avoid doing anything that could reactivate the equipment.lDont bypass the lockout when installing new piping or wiring.Removing Lockout/TagoutlMake sure
14、the equipment is safe to operate by removing all tools from the work area and making sure the system is fully assembled.lSafeguard all employees by conducting a head count to make sure everyone is clear of the equipment. Also notify everyone in the work area that lockout/tagout is being removed.lRem
15、ove the lockout/tagout devices. Each device must be removed by the person who put it on.ContractorslThe outside contractor and the on-site employer must exchange lockout/tagout information.lEmployees on site must understand rules used by the contractor.lBe alert for new types of lockout or tagout de
16、vices.Shift ChangeslIf servicing lasts more than one shift, lockout/tagout protection must not be interrupted.lWhen the employee who applied device is not there to remove it, it can be removed only in an emergency and only under the direction of the supervisor.Lockout/Tagout DevicesDurable Lockout a
17、nd tagout devices must withstand the environment to which they are exposed for the maximum duration of the expected exposure. Tagout devices must be constructed and printed so that they do not deteriorate or become illegible, especially when used in corrosive or wet environments.Lockout/Tagout Devic
18、esStandardized Both lockout and tagout devices must be standardized according to either color, shape, or size. Tagout devices must also be standardized according to print and format.Lockout/Tagout DevicesSubstantial Lockout and tagout devices must be substantial enough to minimize early or accidenta
19、l removal. Tag means of attachment must be non-reusable, attachable by hand, self-locking and non-releasable, with a minimum unlocking strength of no less than 50 pounds (one-piece nylon cable tie).Lockout/Tagout DevicesIdentifiable Locks and tags must clearly identify the employee who applies them.
20、 Tags must also warn against hazardous conditions if the machine or equipment is energized and must include a legend such as: DO NOT START, DO NOT OPEN, DO NOT CLOSE, DO NOT ENERGIZE, DO NOT OPERATE.Periodic InspectionsInspections must be performed at least annually to assure that the energy control
21、 procedures continue to be implemented properly and that the employees are familiar with their responsibilities.Periodic InspectionsSupervisors are responsible for:lConducting annual inspection and must certify that the inspections have been performed.lThe certification must identify the machine or
22、equipment, the date of the inspection, the employees included, and the name of the person performing the inspection.lMust identify any deficiencies or deviations and correct them.LOCKOUT/TAGOUTQUESTIONSScope and ApplicationActivities Not CoveredMinor tool changes and adjustments, Other minor servici
23、ng activities that take place during normal operating production operations which are routine, repetitive, and integral to the use of that production equipment, as long as workers are effectively protected by alternative measures.Scope and ApplicationActivities Not CoveredWork on cord and plug conne
24、cted equipment if the equipment is unplugged from the energy source and the authorized employee has exclusive control of the plug.Scope and ApplicationActivities Not CoveredHot tap operations that involve transmission and distribution systems for gas, steam, water, or petroleum products on pressurized pipelines if continuity of service is essential, shutdown of the system is impractical, documented procedures are followed, and employees are effectively protected by special equipment.
