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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
In-running Nip Points
Pinch
Points
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
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.
ACCEPTABLE OPENING SIZES
Fixed Barrier
Guard
Adjustable
Guard
Retractable
Guard
Interlocked
Guard
Presence Sensing
Devices
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
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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Mechanical hazards

Editor's Notes

  1. 1