THE CONTROL OF HAZARDOUS ENERGY (LOCKOUT/TAGOUT)

THE CONTROL OF HAZARDOUS ENERGY (LOCKOUT/TAGOUT)

Lockout/Tagout OverviewLockout/Tagout Overview

Covers the servicing and maintenance of equipment where the unexpected energization or start up of equipment, or release of stored energy could cause injury

Establishes minimum performance requirements for controlling hazardous energy

All new equipment installed after January 2, 1990, must be designed to accept lockout of its energy-isolating device

Lockout/Tagout Overview (continued)Lockout/Tagout Overview (continued)

Promulgated January 2, 1990 Covers 39 million workers Standard intended to

Save 122 lives Reduce 28,400 lost-workday injuries Reduce 31,900 non-lost workday injuries

HistoryHistory

More citations More costly fines 95% of all lockout/tagout citations involve the failure to

have a formal Energy Control Program in place Remains near the top of OSHA’s list of most frequently

violated standard

Related ReferencesRelated References

29 CFR 1910.147, The Control of Hazardous Energy (Lockout/Tagout)

29 CFR 1910.146, Permit-Required Confined Spaces 29 CFR 1910.331-335, Safety-Related Work Practices 29 CFR 1910.269, Electric Power Generation, Transmission, and

Distribution 29 CFR 1926.417, Lockout and Tagging of Circuits

PurposePurpose

Requires employers to train “authorized” employees When and how to shut down machinery Drain and isolate all energy sources Verify the absence of energy Safely restart equipment when maintenance or repair is

complete

Mandated awareness training of “affected” workers (equipment operators, etc.)

ExemptionsExemptions

Construction Agriculture Maritime Installation under the exclusive control of electric utilities

for the purpose of power generation, transmission and distribution, including related equipment for communication or metering

Oil and gas well drilling services

Exemptions (continued)Exemptions (continued)

Servicing and/or maintenance during normal production unless the employee: Is required to remove or bypass a guard or other safety device Is required to place any part of his/her body into an area on a

machine or piece of equipment where:– Work is actually performed upon the material being processed (point of

operation)– An associated danger zone exists during a machine operating cycle

Exemptions (continued)Exemptions (continued)

If work is routine, repetitive, and integral to the use of the equipment for production Minor tool changes Adjustments Other minor servicing activities

Work on cord and plug Must be able to disconnect cord Must be under the exclusive control of the employee

Additional ExceptionsAdditional Exceptions

Machine has no potential for stored or residual energy, or reaccumulation of stored after shutdown

Has a single source that can be easily identified and isolated

Isolating and locking out the energy source will completely de-energize and deactivate the equipment

The equipment is isolated from an energy source and locked out during maintenance

Additional Exceptions (continued)Additional Exceptions (continued)

A single lockout device will achieve a lock condition The lockout is under the exclusive control of and in the view of

the authorized employee performing the servicing and maintenance

The servicing or maintenance does not create hazards for other employees

There have been no accidents involving unexpected energization of the equipment while taking advantage of this exception

DefinitionsDefinitions

Authorized Employee: A person who locks or tags out equipment in order to perform

servicing or maintenance

Definitions (continued)Definitions (continued)

Affected employee: Job requires employee to operate or use equipment on which

servicing or maintenance is being performed under lockout and tagout conditions

Job requires the employee to work in an area in which such servicing or maintenance is being performed

Note: Becomes an authorized employee when that employee'sduties include performing servicing or maintenance

Definitions (continued)Definitions (continued)

Capable of Being Locked Out: 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

Energized: Connected to an energy source or containing residual or

stored energy

Definitions (continued)Definitions (continued)

Energy isolating device: A mechanical device that physically prevents the transmission

or release of energy: – Manually operated electrical circuit breaker– A disconnect switch– Line valve– A block– Any similar device used to block or isolate energy

Note: Push button, selector switches and other control devices are not energy isolating devices

Definitions (continued) Definitions (continued)

Energy Sources: Mechanical Hydraulic Electrical Gas Pneumatic Water Chemical Thermal Other stored energy (Springs, capacitors, etc)

Definitions (continued) Definitions (continued)

Lockout/Tagout: The placement of a lock/tag on an energy isolating device, in

accordance with an established procedure, to ensure that the energy isolating device and the equipment being controlled cannot be operated until the lock and tag is removed

Definitions (continued)Definitions (continued)

Lockout device: A device that utilizes a positive means such as a lock either

key or combination type, to hold an energy isolating device in the safe position and prevents the energizing of a equipment

Included are blank flanges and bolted slip blinds

Definitions (continued)Definitions (continued)

Servicing/maintenance activities Constructing Installing Setting up Adjusting Inspecting Modifying Lubricating Cleaning or unjamming equipment Making adjustments or tool changes

Definitions (continued)Definitions (continued)

Tagout device: A warning device, such as a tag and a means of attachment Can be securely fastened to an energy isolating device in

accordance with an established procedure to indicate that the energy isolating device and the equipment being controlled can not be operated until the tag is removed

Energy Control ProgramEnergy Control Program

Must clearly and specifically outline the: Scope Purpose Authorization Rules Techniques to be utilized for lockout/tagout, and means to

enforce compliance

Energy Control Program (continued)Energy Control Program (continued)

Must include: A statement of the intended used of the procedure Specific steps for shutting down, isolating, blocking, and

securing equipment to control hazardous energy Specific steps for the placement, removal and transfer of

lockout devices or tagout devices and the responsibility for them

Requirements for testing equipment to determine and verify the effectiveness of lockout devices, tagout devices, and other energy control measures

Where to Begin Where to Begin

Conduct a hazard assessment by identifying each piece of equipment that is used, serviced, or maintained Include broken or stored equipment

Determine the requirements for lockout If there is more than one primary energy source to the

equipment, document each source

Where to Begin (continued) Where to Begin (continued)

Document all energy sources Hidden Direct

The hazard posed The magnitude or measurable degree of danger Special or unusual conditions Proper isolations and devices

Hardware and LimitationsHardware and Limitations

Lockout/Tagout DevicesLockout/Tagout Devices

Durable All devices must be capable of withstanding the workplace

environment. All tags and their means of attachment must be sturdy enough

to prevent inadvertent removal

Lockout/Tagout Devices (continued)Lockout/Tagout Devices (continued)

Standardized Lockout/tagout devices must be

– Singularly identified– The only device(s) used for controlling energy– Not be used for other purposes

Devices must have the same color, shape, or size. The format and print of tags should be standardized

Lockout/Tagout Devices (continued)Lockout/Tagout Devices (continued)

Substantial Removal of lockout devices should be extremely difficult to

remove, requiring the use of excessive force and the help of tools such as bolt cutters

Tagout devices and their attachments must be tough enough so that they can’t be accidentally removed

Lockout Lockout

Lockout is a more appropriate means of ensuring deenergization of equipment than tagout

If an energy-isolating device can’t be locked out, tagout may be used Tagout may be used in place of lockout if it can be

demonstrated that it will offer equivalent protection to that offered by lockout

TagoutTagout

When only a tag is used because equipment cannot be locked out, the following steps must be taken: Removing an isolating circuit element (fuses) Block machine (control switch, die) Opening an extra disconnecting device Other means of isolation

Tagout (continued)Tagout (continued)

Tags must be placed where the lockout device would have been placed

A legend must be used such as: Do not start Do not open Do not close Do not energize Do not operate

Tagout LimitationsTagout Limitations

Tags are attached to energy isolation devices, but they are only warning.

They do not provide the protection offered by a lockout procedure

A tag is never to be bypassed or ignored, and it may not be removed without the specific authorization of person responsible for it

Tagout Limitations (continued)Tagout Limitations (continued)

Tags must be clearly visible and easily understandable by any employee who may be in the area

Tags and their attaching materials must be able to withstand any adverse environmental conditions in the workplace

Tagout Limitations (continued)Tagout Limitations (continued)

Tags must be clearly understood and respected to be effective Workers should guard against false sense of security

Tags must be carefully secured to the energy-controlling devices so that they can’t easily be detached by accident during use

Safety AuditSafety Audit

Annual InspectionsAnnual Inspections

Certain circumstances lend themselves to the opportunity for an inspection Construction of new equipment Installation of new equipment Modification or adjustment of equipment Routinely scheduled cleaning and maintenance Major repairs

Designating an InspectorDesignating an Inspector

Periodic inspections must be performed by an authorized employee other than the one(s) using the energy control procedure

Who can inspect Department manager Plant management Safety manager Others

Employee ReviewsEmployee Reviews

Lockout Must include a review between the inspector and each

authorized employee

Tagout Must be a review between the inspector and each authorized

and affected employee Review should cover each employee's responsibility under the

procedure being inspected, as well as the limitations of tags

Certifying InspectionsCertifying Inspections

Must certify that the required periodic inspections have been performed

Certification must identify the following: The equipment on which the energy control procedure was

used The date of the inspection The employee included in the inspection The name of the person performing the inspection

Follow-up auditFollow-up audit

A follow-up audit must be conducted to ensure that all deficiencies noted have been corrected

Documentation must identify: The equipment on which the lockout procedure is being

utilized The date of the inspection Employees interviewed Employee(s) performing the inspection

TrainingTraining

Specific RequirementsSpecific Requirements

A training program must consist of: Effective initial training Periodic retraining as necessary Certification that training has been given to all employees

covered by the standard

Certification must become part of employee record and contain Employee's name Date of training

Specific Requirements (continued) Specific Requirements (continued)

Training must be provided to ensure that the purpose and function of the energy control program are understood by employees

That the knowledge and skills required for the safe application, usage, and removal of the energy controls are acquired by employees

Type of TrainingType of Training

The amount and kind of training is based upon The relationship of each employee’s job to the equipment

being locked or tagged out The degree of knowledge relevant to hazardous energy that

he/she must possess – Need to know

Authorized EmployeeAuthorized Employee

Each authorized employee must receive the following training:

The purpose of the procedure Ability to recognize applicable hazardous energy sources in the

workplace The type and magnitude of the energy available in the workplace Understanding the means and methods of isolating and/or

controlling the various types of energy sources Ways to verify that energy isolation is effective

Affected EmployeesAffected Employees

All affected employees must be instructed in the purpose and use of the lockout/tagout system

Create awareness

Other EmployeesOther Employees

All other employees (including new hires) whose work operations are or may be in an area where lockout/tagout may be utilized

These employees must be instructed: About the procedure That they are prohibited from starting up or reenergizing any

locked-out or tagged-out equipment they encounter

RetrainingRetraining

Must be conducted for all authorized and affected employees whenever: There is a change in job assignment Change in equipment, machinery, or processes that presents

a new hazard A change in the lockout/tagout procedure

Retraining (continued)Retraining (continued)

Must be conducted whenever a periodic inspection reveals or whenever the authorized employee has reason to believe that there are deviations from or inadequacies in the employee's knowledge or use of the lockout/tagout procedures

Group Lockout/TagoutGroup Lockout/Tagout

When servicing and/or maintenance is performed by a crew, craft, department or other group, they must utilize a procedure that affords the employees a level of protection equivalent to that provided by the implementation of a personal lockout/tagout device

Group Lockout/Tagout (continued)Group Lockout/Tagout (continued)

Primary responsibility is vested in an authorized employee for a set number of employees working under the protection of a group lockout or tagout device

Provision for the authorized employee to ascertain the exposure status of individual group members with regard to the lockout/tagout of the equipment

Group Lockout/Tagout (continued)Group Lockout/Tagout (continued)

Lockout/tagout control responsibility is designated to an authorized employee to coordinate affected work forces and ensure continuity of protection

Each authorized employee must affix a personal lockout/tagout device to the group lockout device, group lock box, or comparable mechanism when he/she begins work, and must remove those devices when he/she stops working on the equipment being serviced or maintained

Shift or personnel changes occurShift or personnel changes occur

Continuity of lockout/tagout protection must be ensured by following specific procedures for shift and personnel changes, including the orderly hand-off of lockout of lockout/tagout devices

Unusual ConditionsUnusual Conditions

Machines need to be tested or repositioned during servicing When necessary, under special condition, OSHA allows

the temporary removal of locks or tags and the reenergization of the equipment– Example, when power is needed for the testing or positioning of

equipment

Unusual Conditions (continued)Unusual Conditions (continued)

Subject to the follow restrictions: Equipment must be cleared of tools and material Employees must vacate the equipment areas The lockout/tagout device must be removed only by the

authorized employee who applied it

Unusual Conditions (continued)Unusual Conditions (continued)

Energization may then be allowed by testing or positioning All systems must be de-energized, the employee or equipment

must be isolated from energy source, and the lockout/tagout devices reapplied

ContractorsContractors

Must inform each other of all applicable lockout/tagout procedures.

Both employer and contractor must ensue that their employees understand and will respect the others Energy Control Program

Typical Shutdown ProcedureTypical Shutdown Procedure

Notify affected employees Use the specific procedures as outlined for the

appropriate situation Shut off energy source(s) to affected equipment

Use normal stopping or running procedures for the machine

Isolate the equipment from the energy source

Shutdown Procedures (continued)Shutdown Procedures (continued)

Affix lock(s) and tag(s) to each energy source controlling device

Relieve all stored energy from capacitor banks, springs, compressed air, hydraulics, steam, etc.

Verify isolation of energy has occurred by trying equipment

Removal of Lockout/Tagout and Start-Up ProceduresRemoval of Lockout/Tagout and Start-Up Procedures

Ensure that nonessential items are removed from equipment Ensure that equipment components are intact Check area to ensure that all affected employees are safely

positioned or removed from the area Notify all affected employees and site supervisor before

reenergizing the equipment Remove lockout/tagout device Reenergize equipment to ensure safe operation

Summary Summary

Accidents will happen Equipment will occasionally malfunction People will still make mistakes

There is no excuse for serious injury that results from ignorance, carelessness, complacency, or lack of an Energy Control Program