Presentation on theme: "Lockout / Tagout Control of Hazardous Energy"— Presentation transcript:
1 Lockout / Tagout Control of Hazardous Energy OSHA Standard 29CFRMIOSHA PART 85 - The Control of Hazardous Energy Sources1
2 Case Study #1An employee was cleaning the unguarded side of an operating granite saw. The employee was caught in the moving parts of the saw and pulled into a nip point between the saw blade and the idler wheel resulting in fatal injuries.
3 Case Study #2A trainee employee was cleaning a flour batch mixer. The employee was reaching into the machine when another worker activated the wrong switch turning the machine on. The employee cleaning the mixer suffered fatal crushing injuries to his neck. There was an unwritten company procedure for locking out during all maintenance. The procedure was not followed.
4 Case Study #3An employee was cleaning scrap from beneath a large shear when a fellow employee hit the control button activating the blade. The blade came down and decapitated the employee cleaning the scrap.
5 OF THESE LOSSES HAVE IN COMMON? WHAT DOALLOF THESE LOSSES HAVE IN COMMON?
7 You will learn… Four E’s of LOTO Purpose of LOTO Requirements for LOTO Types of Hazardous EnergyProcedures for LOTO2
8 Four E’s of LOTOEEnergyEngineeringEducationEnforcementEEE
9 Energy More than just switching a machine on/off Energy is dangerous when it is strong enough to injure your bodyTypes of energy include:KineticPotential
10 Types of EnergyElectricalMechanicalThermalHydraulicPneumatic3
11 Mechanical Energy Hazards 2 TypesKinetic - In MotionPotential - Stored6
12 Kinetic Energy Hazards Energy of moving machinery can cause:AmputationsLacerationsFracturesLoss of life7
13 Potential Energy Hazards Energy stored in machineryWeights & SpringsPistons under pressureHydraulic controlsStored potential energy can be released during work causing injury or death8
14 Before working – release, drain, or vent chemicals safely Chemical HazardsSome chemicals can:Start firesCause skin burnsGenerate harmful gases, vapors, or fumesBefore working – release, drain, or vent chemicals safely9
15 Thermal Energy Hazards Hazards of Heat and ColdHot equipment and fluids can burn youVery cold fluids can cause injuryQuick release of compressed gases can freeze your skinAllow equipment to reach a safe temperature before starting work10
16 Relieve pressure slowly into a proper container Hydraulic EnergyEnergy of Liquids Under PressurePressure can cause equipment to moveRapid release can cause injuryRapid release can also cause the ejection of system partsRelieve pressure slowly into a proper container11
17 Pneumatic Energy Hazards Energy of Compressed GasesUncontrolled release can cause injuryRapid depressurization can create extremely low temperaturesProperly vent all systems before starting work12
18 EngineeringDo not bypass safety devices - they are designed for your protection!Engineered mechanisms built into machines for your safety include:Mechanical guardsMechanical stops (pins, valves)Point-of-Operation guardsInterlocksLight curtains
19 EducationKnow all places hazardous energy releases might occur on each machine you are working on.Make sure people in the area know were all energy sources are located.Review and follow the written OCC Lockout/Tagout Program.
20 Working on unfamiliar machinery is a hazard First Step In LOTOKnow your equipment and systemsHazardsIsolation pointsMachine-specific procedures for lockout / tagoutWorking on unfamiliar machinery is a hazard13
21 When is LOTO necessary?To prevent unexpected start-up during service/maintenanceThere is the potential for the hazardous release of stored energySafety devices are bypassed for serviceBody is exposed to hazardous energyClearing jamsElectrical repairs
22 Energy Isolation Machine specific LOTO instructions Required if more than one power source involvedIdentifies isolation pointsMany different scenarios possibleLOTO devices are assigned to specific affected employees
23 Use Safe Electrical Practices Use non-conducting toolsCheck that circuits are dead before workingLock & Tag source breakers, not switchesEnsure all control power is de-energizedDischarge all capacitors after Lockout5
24 Energy IsolationIdentify potential sources of hazardous energy releaseIdentify method(s) for isolating the energyDocument procedures for each piece of equipment
25 EnforcementKnow the results of tampering with or not following complete LOTO procedures:LOTO procedures have been established to protect OCC employees from serious injury or death.Failure to comply with OCC LOTO policies and procedures can result in disciplinary actions up to, and including, dismissal.
26 Who Can Lockout Equipment? Employees who have been trained and authorized by management ONLY!14
27 All contract employees must follow OCC LOTO procedures! ContractorsAll contract employees must follow OCC LOTO procedures!25
28 Items Needed for LOTO Written LOTO schedule Locks & Tags - specific to the workerHasps - for placing locks & tagsBreaker Clips - for electrical LOTOBlank Flanges (Pancakes) - for fluid linesValve Covers - for LOTO of valvesPlug Buckets - for electrical plugs15
29 Use only those issued to you Never use another worker’s lock or tag Use of Locks and TagsUse only those issued to youNever use another worker’s lock or tagAsk your supervisor if you need more LOTO equipment16
30 Who Can Remove Locks and Tags? The employee who placed the tagorA supervisor, after obtaining permission from the worker who placed the tagNO EXCEPTIONS!26
31 Frequently Asked Questions Q: A piece of equipment already has a lock and tag. Do I have to place my own locks and tags?A: YES. Each person working on the equipment must place their own locks and tags to ensure their safety.27
32 Procedures for Lockout / Tagout RememberKnow your equipment and systems before proceedingHazardsIsolation pointsProcedures for LockoutWorking on unfamiliar machinery is a hazard!13
33 6 Step LOTO Procedure Prepare for shutdown Shut down equipment Isolate all energy sourcesPlace Locks and TagsRelease stored energyVerify equipment isolation17
34 Understand equipment hazards Notify other workers of shutdown 1 Prepare for ShutdownUnderstand equipment hazardsNotify other workers of shutdown18
35 Use normal shutdown procedures 2 Shutdown EquipmentUse normal shutdown proceduresTurn all switches to OFFShut all control valvesDisable all sources of energy19
36 3 Isolate All Energy Sources Shut valvesOpen breakers and disconnects20
37 Shut off and lock valves 4 Place Locks & Tags OnShut off and lock valvesDeactivate and lock breakers / electrical disconnectsBlock or disconnect all linesLock and tag blank flanges21
38 5 Release or Block All Stored Energy Discharge capacitorsBlock or release springsBlock elevated partsStop rotating flywheelsRelieve system pressureDrain fluidsVent gasesAllow system to cool22
39 6 Verify Equipment Isolation Ensure that all other workers are clearCheck that locking devices are securely placedCheck isolationAttempt normal startup (should fail!)Return controls to OFF/Neutral23
40 Release from Locked Out / Tagged Out Status Inspect area and equipmentEnsure all machine guards are in placeMove tools away from equipmentInform others of startupRestore system connectionsRemove Locks & TagsRestore equipment to normal operating parametersConduct normal startup24