Occupational Health Program Safety Training Series. Lockout/Tagout Safety Awareness Training

Transcription

1 Occupational Health Program Safety Training Series Lockout/Tagout Safety Awareness Training 1

2 Lock out/tag out Lock out: the placement of a lockout device (lock) on an energy isolating device in accordance with an established procedure. Tag out: the placement of special tags on equipment energy isolating devices to warn employees not to operate 2

3 Lock out/tag out LOCKOUT/TAGOUT SHOULD BE USED WHEN: A worker must remove or bypass a guard or safety device A worker must place any part of body where it could be caught by moving machinery Clearing jammed mechanisms Unexpected start up or release of energy could cause injury Cleaning or oiling machinery with moving parts Repairing electrical circuits 3

4 Energy Hazards Electrical Mechanical Chemical Thermal Pneumatic Hydraulic Gas 4

5 Electrical Hazards As low as 30 volts can carry enough current to kill As low as 1 amp of electric current can stop a person s heart Electrical burns: Are the result of the electric current flowing in the tissues and d may be either skin deep or may affect deeper layers (muscles, bones, etc.) or both Arc burns: Are the result of high temperatures produced by electric arcs or by explosions close to the body causing burns and blisters Thermal contact burns: Normally experienced from the skin's contacting hot surfaces of overheated electric conductors, conduits, or other energized equipment 5

6 Mechanical Energy Hazards Kinetic in motion Potential stored Energy from moving machinery can cause Amputations Lacerations Fractures Loss of life Stored potential energy can be released during work causing injury or death Energy stored in machinery Weights & Springs Pistons under pressure Hydraulic controls 6

7 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 7

8 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. 8

9 First Step In LOTO Know your equipment & systems What are the energy hazards Where are the isolation points What equipment is needed for LOTO What is procedure for Lockout Working on unfamiliar machinery is a hazard 9

10 Items Needed for LOTO 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 10

11 Who Can Lockout? Any trained and authorized employee who has to perform work or maintenance on a piece of equipment. Each person working on the equipment must place their own locks and tags to ensure their safety. Note: : Only the person doing the work holds a key to their lock and has the authority to remove it or a supervisor, after obtaining permission from the worker who placed the tag 11

12 How Do I Lockout? Prepare for shutdown Understand equipment hazards & Notify other workers Shut the machine down properly Isolate all energy sources Valves, breakers, etc. Apply lock(s)/tag(s) to all energy sources Release or block residual energy - Discharge capacitors, Block or release springs, Stop rotating flywheels, Relieve system pressure, Drain fluids, Vent gases, Allow system to cool Verify energy isolation - Check isolation, Attempt normal startup, Return controls to OFF/Neutral 12

13 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 13

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