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Mechanical Hazards

Mechanical Hazards. Types of Mechanical Hazards Controls for Mechanical Hazards. Unexpected Release of Stored Mechanical Energy. Springs. Dropped weights. Linear Or Rotational Kinetic Energy (Projectiles). Rotating Machinery/Shafts. Compressed Fluids. Blades, Sharp Edges.

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Mechanical Hazards

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  1. Mechanical Hazards

  2. Types of Mechanical Hazards • Controls for Mechanical Hazards

  3. Unexpected Release of Stored Mechanical Energy Springs

  4. Dropped weights

  5. Linear Or Rotational Kinetic Energy (Projectiles)

  6. Rotating Machinery/Shafts

  7. Compressed Fluids

  8. Blades, Sharp Edges

  9. In-running Nip Points

  10. Pinch Points

  11. Controls • If hazard is not essential to the experiment or project, eliminate it altogether or engineer it out • If it is not possible to eliminate the hazard, guard it • If it is not possible to guard it, must rely on training and personal protective equipment

  12. A few options available in guarding a hazard • Fixed barrier guards • Adjustable guard • Retractable guard • Interlocked guard • Electronic presence sensing devices • References: ANSI B11 series of standards, particularly B11.19. Also OSHA: 29 CFR 1910 subpart O.

  13. Acceptable Opening Sizes

  14. Fixed Barrier Guard

  15. Adjustable Guard

  16. Retractable Guard

  17. Interlocked Guard

  18. Presence Sensing Devices

  19. Training • Safety training (well designed, consistently implemented, documented, refresher courses as necessary) • Procedural controls, such as: • Lock out/ tag out • Limiting hours (no working at 2 am) • Buddy system

  20. Examples of Personal Protective Equipment • Safety glasses • Gloves • Hard hats • Steel-toed boots • Lab coats • Safety harnesses for fall protection • Ear plugs

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