copyright © 2012 american safety management inc. lockout tagout
DESCRIPTION
Electrical Mechanical Chemical Thermal Hydraulic Pneumatic Types of EnergyTRANSCRIPT
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Copyright © 2012 American Safety Management Inc.
Lockout Tagout
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• Purpose of Lockout – Tagout• Requirements for LOTO• Types of Hazardous Energy• Procedures for LOTO
You will learn…
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• Electrical• Mechanical• Chemical• Thermal• Hydraulic• Pneumatic
Types of Energy
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• As low as 30 volts can carry enough current to kill
Electric shock can kill
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• Use non-conducting tools• Check circuits dead before working• Lock & Tag source breakers not switches• Ensure all control power is de-energized• Discharge all capacitors after Lockout
Use Safe Electrical Practices
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• 2 types:– Kinetic (in motion)– Potential (stored)
Mechanical Energy Hazards
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• Energy of moving machinery can cause:– Amputations– Lacerations– Fractures– Loss of life
Kinetic Energy Hazards
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• Energy stored in machinery• Weights and springs• Pistons under pressure• Hydraulic controls
*Stored potential energy can be released during work causing injury or death
Potential Energy Hazards
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• Chemicals have energy that can:– Start fires – Cause skin burns– Generate harmful gases or fumes
*Before working – release, drain or vent chemicals safely
Chemical Energy Hazards
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• Energy of Heat (and cold)– Hot equipment & fluids will burn you– Cold fluids can cause injury also– Quick release of compressed gases can freeze your
skin– Allow equipment to reach a safe temperature before
starting work
Thermal Energy Hazards
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• 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
Hydraulic Energy
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• Energy of Compressed Gases– Uncontrolled release can cause injury– Rapid de-pressurization creates extreme low
temperatures
*Property vent all systems before starting work
Pneumatic Energy Hazards
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• Know your equipment and systems– Hazards– Isolation points– Procedure for Lockout
Working on unfamiliar machinery is a hazard
First Step in LOTO
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Only employees who have been trained and authorized by management
Who Can Lockout Equipment?
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• 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
Items needed for LOTO
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• Use only those issued to you• Never use another workers lock or tag• Ask your supervisor if you need more LOTO
equipment
Use of Lock & Tags
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1. Prepare for Shutdown2. Shutdown Equipment3. Isolate all energy sources4. Place Locks & Tags5. Release Stored Energy6. Verify Equipment Isolation
6 Step LOTO Procedure
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• Understand equipment hazards
• Notify other workers of shutdown
1. Prepare for Shutdown
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• Use normal shutdown procedure
• Turn all switches to OFF
• Shut all control valves
• Disable all sources of energy
2. Shutdown Equipment
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• Shut valves
• Open breakers & disconnects
3. Isolate All Energy Sources
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• Valves
• Breakers/electrical disconnects
• Block or disconnect all lines
• Lock and tag blank flanges
4. Place Locks & Tags on
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• Discharge capacitors• Block or release springs• Block elevated parts• Stop rotating flywheels• Relieve system pressure• Drain fluids• Vent gases• Allow system to cool
5. Release or Block all Stored Energy
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• Check all other workers are clear
• Check locking devices securely placed
• Check isolation
• Attempt normal startup
• Return controls to OFF/Neutral
6. Verify Equipment Isolation
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• 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
Release from LOTO
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All contractor employees must follow our LOTO procedures!
Contractors
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Only the employee who placed the tag or
a supervisor, after obtaining permission from the worker who placed the tag
Who can remove Locks & Tags?
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YES. Each person working on the equipment must place their own locks and tags to ensure their
safety.
A piece of equipment already has a lock and tag. Do I have to place my own locks & tags?
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USE Proper Lockout – Tagout Procedures
Please be careful when working on equipment
Lockout – Tagout Protects YOU!