11

Occupational Health ProgramSafety Training Series

Lockout/Tagout Safety Awareness Training

22

Lock out/Tag outLock out/Tag outLock out:Lock out:the placement of a lockout the placement of a lockout device (lock) on an energy device (lock) on an energy isolating device in isolating device in accordance with an accordance with an established procedure.established procedure.

Tag out:Tag out:the placement of special the placement of special tags on equipment energy tags on equipment energy isolating devices to warn isolating devices to warn employees not to operate employees not to operate

33

Lock out/Tag out Lock out/Tag out

LOCKOUT/TAGOUT SHOULD BE USED LOCKOUT/TAGOUT SHOULD BE USED WHEN:WHEN:

A worker must remove or bypass a guard or safety A worker must remove or bypass a guard or safety devicedeviceA worker must place any part of body where it A worker must place any part of body where it could be caught by moving machinerycould be caught by moving machineryClearing jammed mechanismsClearing jammed mechanismsUnexpected start up or release of energy could Unexpected start up or release of energy could cause injurycause injuryCleaning or oiling machinery with moving partsCleaning or oiling machinery with moving partsRepairing electrical circuitsRepairing electrical circuits

44

Energy HazardsEnergy Hazards

–– ElectricalElectrical–– MechanicalMechanical–– ChemicalChemical–– ThermalThermal–– PneumaticPneumatic–– HydraulicHydraulic–– GasGas

55

Electrical HazardsElectrical Hazards

•• As low as 30 volts can carry enough current to killAs low as 30 volts can carry enough current to kill

•• As low as 1 amp of electric current can stop a personAs low as 1 amp of electric current can stop a person’’s s heartheart

Electrical burns:Electrical burns:–– Are the result of the electric current flowing in the tissues anAre the result of the electric current flowing in the tissues and may be d may be

either skin deep or may affect deeper layers (muscles, bones, eteither skin deep or may affect deeper layers (muscles, bones, etc.) or c.) or both both

Arc burns:Arc burns:–– Are the result of high temperatures produced by electric arcs orAre the result of high temperatures produced by electric arcs or by by

explosions close to the body causing burns and blistersexplosions close to the body causing burns and blistersThermal contact burns:Thermal contact burns:–– Normally experienced from the skin's contacting hot surfaces of Normally experienced from the skin's contacting hot surfaces of

overheated electric conductors, conduits, or other energized overheated electric conductors, conduits, or other energized equipmentequipment

66

Mechanical Energy HazardsMechanical Energy Hazards

Kinetic Kinetic –– in motionin motion

Energy from movingEnergy from movingmachinery can cause machinery can cause

AmputationsAmputationsLacerationsLacerationsFracturesFractures

Loss of lifeLoss of life

Potential Potential –– storedstored

Stored potential energy canStored potential energy canbe released during workbe released during workcausing injury or deathcausing injury or death

Energy stored in machinery Energy stored in machinery WeightsWeights & & SpringsSpringsPistons under pressurePistons under pressureHydraulic controlsHydraulic controls

77

Chemical Energy HazardsChemical Energy Hazards

Chemicals have energy that can Chemicals have energy that can start firesstart firescause skin burnscause skin burnsgenerate harmful gases or fumesgenerate harmful gases or fumes

Before working Before working –– release, drain, or release, drain, or vent chemicals safelyvent chemicals safely

88

Thermal Energy HazardsThermal Energy Hazards

Energy of HeatEnergy of Heat (and cold)(and cold)

Hot equipment & fluids will burn youHot equipment & fluids will burn youCold fluids can cause injury alsoCold fluids can cause injury alsoQuick release of compresses gases Quick release of compresses gases can freeze your skincan freeze your skinAllow equipment to reach a safe Allow equipment to reach a safe temperature before starting work.temperature before starting work.

99

First Step In LOTOFirst Step In LOTO

Know your equipment & systems Know your equipment & systems –– What are the energy hazardsWhat are the energy hazards–– Where are the isolation pointsWhere are the isolation points–– What equipment is needed for What equipment is needed for

LOTOLOTO–– What is procedure for LockoutWhat is procedure for Lockout

Working on unfamiliar machinery is a Working on unfamiliar machinery is a hazardhazard

1010

Items Needed for LOTOItems Needed for LOTO

Locks & Tags Locks & Tags -- identified identified to the worker to the worker Hasps Hasps -- for placing locks for placing locks & tags & tags Breaker Clips Breaker Clips -- for for electrical LOTO electrical LOTO Blank Flanges (pancakes)Blank Flanges (pancakes)--for fluid lines for fluid lines Valve Covers Valve Covers -- for LOTO for LOTO of Valves of Valves Plug Buckets Plug Buckets -- for for electrical plugselectrical plugs

1111

Who Can Lockout?Who Can Lockout?

Any trained and authorized employee who Any trained and authorized employee who has to perform work or maintenance on a has to perform work or maintenance on a piece of equipment.piece of equipment.Each person working on the equipment must Each person working on the equipment must place their own locks and tags to ensure place their own locks and tags to ensure their safety.their safety.

NoteNote: Only the person doing the work holds a key to: Only the person doing the work holds a key totheir lock and has the authority to remove it their lock and has the authority to remove it

or or a supervisor, a supervisor, after obtaining permissionafter obtaining permission from thefrom the

worker who placed the tagworker who placed the tag

1212

How Do I Lockout?How Do I Lockout?

Prepare for shutdownPrepare for shutdown –– Understand equipment hazards & Understand equipment hazards & Notify other workers Notify other workers

Shut the machine down properlyShut the machine down properlyIsolate all energy sourcesIsolate all energy sources –– Valves, breakers, etc.Valves, breakers, etc.

Apply lock(s)/tag(s) to all energy sourcesApply lock(s)/tag(s) to all energy sourcesRelease or block residual energyRelease or block residual energy -- Discharge capacitors, Discharge capacitors, Block or release springs, Stop rotating flywheels, Relieve systeBlock or release springs, Stop rotating flywheels, Relieve system m pressure, Drain fluids, Vent gases, Allow system to coolpressure, Drain fluids, Vent gases, Allow system to cool

Verify energy isolationVerify energy isolation -- Check isolation, Attempt normal Check isolation, Attempt normal startup, Return controls to OFF/Neutralstartup, Return controls to OFF/Neutral

1313

Release from LOTORelease from LOTO

Inspect Area and Equipment Inspect Area and Equipment Ensure all Machine Guards in place Ensure all Machine Guards in place Move tools away from equipment Move tools away from equipment Inform others of startup Inform others of startup Restore system connections Restore system connections Remove Locks & Tags Remove Locks & Tags Restore equipment to normal Restore equipment to normal Conduct normal startupConduct normal startup

1414http://www.safety.wisc.edu