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Introduction

Introduction. Most accidents are caused by the uncontrolled release of hazardous energy. Many of these accidents can be prevented by proper lock-out/tag-out procedures. OSHA’s standard is designed to prevent needless deaths and serious injury to workers by controlling hazardous energy.

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Introduction

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  1. Introduction Most accidents are caused by the uncontrolled release of hazardous energy. Many of these accidents can be prevented by proper lock-out/tag-out procedures. OSHA’s standard is designed to prevent needless deaths and serious injury to workers by controlling hazardous energy.

  2. Training Overview • This training is intended to provide a general overview of Lock-out/Tag-out Systems used in today’s workplace. • This awareness information will not provide specific direction in using lock-out/tag-out in confined space rescue operations.

  3. Course Objectives • Define what is lock-out/tag-out • Determine when lock-out/tag-out should be used • Define energy as it applies to this area • Apply lock-out/tag-out guidelines • Describe procedures for removing lock-out/tag-out

  4. Lock-Out • A disconnect switch, circuit breaker, valve or other energy isolating mechanism is put in a safe or “off” position. • A device is often placed over the energy isolating mechanism to hold it in a safe position. • A lock is attached so the equipment cannot be energized.

  5. Tag-Out • In a tag-out, the energy isolating device is placed in a safe position and a written warning is attached to it. All lock-out/tag- out materials are supplied by the employer.

  6. When • Lock-out/tag-out is necessary whenever you are performing service or maintenance around any machine where you can be injured. • When placing any portion of your body in a position that may be caught in moving machinery • Any work in or near electrically charged machinery.

  7. Mechanism of Injury • Unexpected start-up of the equipment • Release of stored energy

  8. What is Energy? • Energy can be defined in many areas. For the purposes of these guidelines, energy is defined as the following: • Energy is the movement or the possibility of movement • Whenever the power switch is “on” or “off”, energy as some sort is always present in any powered equipment • Energy can come from the force caused by the motion of an object, or potential energy, or force stored in an object that is not moving.

  9. applying lock-out/tag-out guidelines Preparation for Shut Down • Before you turn off any equipment, in order to lock or tag it out, you must know: • The type and amount of energy that powers it • The hazard of that energy • How the energy can be controlled

  10. applying lock-out/tag-out guidelines Preparation for Shut Down • Shut the system down by using its operating controls. • Follow the proper procedure which is right for that equipment. • Assistance from employees knowledgeable with the equipment

  11. Equipment Isolation • Operate all energy isolating devices so the equipment is isolated from its energy source • Be sure to isolate all energy sources, secondary power supply, as well as the main one • Never pull an electrical switch while it is under load • Never remove a fuse instead of disconnecting Equipment Isolation verification • Make sure all danger areas are cleared of personnel • Verify that the main disconnect switch or breaker can’t be moved to “on” position • Press all start buttons and other controls on the equipment • Shut off all machine controls when testing is finished

  12. Application of Lock-Out/Tag-Out • Isolating devices are to be locked, tagged or both • Use only standardized devices supplied by your employer • If tags are used instead of locks, attach them at the same point as a lock or as close as possible • If no tags available, post a firefighter at the energy source

  13. Control Stored Energy • To guard against stored energy residual; do any of the following. • Inspect the system • Relieve trapped pressure • Release tension on springs • Block or brace parts that may fall • Gravity • Bleed the lines and leave vent port open • Process piping systems and close valves

  14. Removing Lock-Out/Tag-Out • Contact Incident Command • Remove only the tags you put in place • Make sure equipment is safe to operate • Remove all tools from work area • Safeguard all employees • Conduct a head count to assure everyone is clear of the equipment and make notification that lock-out/tag-out is being removed • Follow a check list if there are required steps to re-energize the system

  15. Factoids According to OSHA, how many workplace deaths are attributed to improper use of lock-out/tag-out annually? According to OSHA, 2% of workplace deaths could be avoided by proper implementation of lock-out/tag-out procedures. What are the four major types of energy sources which require lock-out/tag-out? Electrical Mechanical Hydraulic Chemical

  16. Factoids What is the last step of the lock-out/tag-out procedure? Verify the isolation of energy and assure stored energy has been released. How often should lock-out/tag-out procedures be inspected? They must be reviewed annually in the workplace.

  17. This presentation shared by Snohomish County Fire District 7

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