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Lockout - Tagout Control of Hazardous Energy OSHA Standard 1910.147
You will learn… Purpose of Lockout-Tagout Requirements for LOTO Types of Hazardous Energy Procedures for LOTO
Types of Energy 9 9 9 9 9 9
Electrical Mechanical Chemical Thermal Hydraulic Pneumatic
Electric shock can kill 9 as low as 30 volts can carry enough current to kill
Use Safe Electrical Practices 9 Use non-conducting tools 9 Check circuits dead before working 9 Lock & Tag source breakers not switches 9 Ensure all control power is de-energized 9 Discharge all capacitors after Lockout
Quiz Time! Circle the correct answer below.
1. It takes at least 120 volts to carry enough current to kill you. a. True b. False 2. The two types of mechanical energy hazards are: a. thermo and hydraulic b. kinetic and potential c. hydraulic and kinetic
Mechanical Energy Hazards 2 Types • Kinetic – in motion • Potential - stored
Kinetic Energy Hazards Energy of moving machinery can cause
Amputations Lacerations Fractures Loss of life
Potential Energy Hazards 9 9 9 9
Energy stored in machinery Weights & Springs Pistons under pressure Hydraulic controls Stored potential energy can be released during work causing injury or death
Chemical Energy Hazards Chemicals have energy that can start fires cause skin burns generate harmful gases or fumes Before working – release, drain or vent chemicals safely
Thermal Energy Hazards Energy of Heat (and cold) • Hot equipment & fluids will burn you • Cold fluids can cause injury also • Quick release of compresses gases can freeze your skin • Allow equipment to reach a safe temperature before starting work.
Hydraulic Energy Energy of Liquids Under Pressure pressure can cause equipment to move rapid release can cause injury or ejection of system parts Relieve pressure slowly into a proper container
Pneumatic Energy Hazards Energy of Compressed Gases – uncontrolled release can cause injury – rapid de-pressurization creates extreme low temperature Properly vent all systems before starting work
Quiz Time! Circle the correct answer below.
1. Thermal Energy can start fires and may generate harmful gases or fumes. a. True b. False •
When working with pneumatic energy: a. relieve pressure slowly into a proper container. b. properly vent all systems before starting work. c. allow equipment to reach a safe temperature before starting work.
First Step In LOTO Know your equipment & systems – hazards – isolation points – procedure for Lockout Working on unfamiliar machinery is a hazard
Who Can Lockout Equipment? Only Employees who have been trained and authorized by management
Items needed for LOTO
Written LOTO schedule Locks & Tags - identified to the worker Hasps - for placing locks & tags Breaker Clips - for electrical LOTO Blank Flanges (pancakes)- for fluid lines Valve Covers - for LOTO of Valves Plug Buckets - for electrical plugs
Use of Locks & Tags • Use only those issued to you • Never use another workers lock or tag • Ask your supervisor if you need more LOTO equipment
Quiz Time! Circle the correct answer below.
1. The first step in lock LOTO is to remove all protective guards. a. True b. False 2 Only those employees who have been trained and authorized by management can lockout equipment. a. True b. False
6 Step LOTO Procedure • • • • • •
Prepare for Shutdown Shutdown Equipment Isolate all energy sources Place Locks & Tags Release Stored Energy Verify Equipment Isolation
1. Prepare for Shutdown Understand equipment hazards Notify other workers of shutdown
2. Shutdown Equipment Use normal shutdown procedure Turn all switches to OFF Shut all control valves Disable all sources of energy
3. Isolate All Energy Sources Shut valves Open breakers & disconnects
4. Place Locks & Tags on Valves Breakers / electrical disconnects Block or disconnect all lines Lock and tag blank flanges
5. Release or Block all Stored Energy 9 Discharge capacitors 9 Block or release springs 9 Block elevated parts 9 Stop rotating flywheels 9 Relieve system pressure 9 Drain fluids 9 Vent gases 9 Allow system to cool
6. Verify Equipment Isolation
Check all other workers are clear Check locking devices securely placed Check isolation Attempt normal startup Return Controls to OFF/Neutral
Release from LOTO
Inspect Area and Equipment Ensure all Machine Guards in place Move tools away from equipment Inform others of startup Restore system connections Remove Locks & Tags Restore equipment to normal Conduct normal startup
Quiz Time Circle the correct answer below.
1. You must notify other workers prior to a shutdown. a. True b. False 2. Locks and or tags must be placed only on block or disconnect lines. a. True b. False
Contractors All contractor employees must follow Our LOTO procedures!
Who can remove Locks & Tags? Only the employee who placed the tag or a supervisor, after obtaining permission from the worker who placed the tag
A piece of equipment already has a lock and tag. Do I have to place my own locks & tags? YES. Each person working on the equipment must place their own locks and tags to ensure their safety.
Lockout-Tagout Protects YOU! USE Proper Lockout - Tagout Procedures
Please be careful when working on equipment
Quiz Time! Circle the correct answer below.
1. Only the employee who places a lock and or tag may remove it. a. True b. False 2. In the event a piece of equipment already has a lock and tag; an additional lock and tag from a second worker is not necessary. a. True b. False
