Machine Guarding 101
Sometimes, in safety, people assume. Those assumptions can lead to some very nasty incidents. When it comes to machine guarding, assumptions can be deadly. Don’t let these common mistakes hurt you or anyone at your company:
Mistake #1— People assume that machines are safe when they purchase them.
This is a common misconception that ends up hurting people. Machine manufacturers are not responsible for guarding the machines they create. The consumer who purchases the item must evaluate the machine to ensure that all areas are properly guarded.
A simple, but effective tool is a machine guarding checklist that is used to inspect each piece of equipment in your facility. Use this OSHA resource to create a machine guarding checklist for your facility.
Mistake #2— People assume everyone understands machine guarding.
The idea of safety being common sense is rampant… and wrong. Safety is learned and, if safety is learned, we must educate.
Although many guards are created to prevent any contact with dangerous moving parts, it can still happen if an employee does not understand the equipment. Machine operators must be trained annually on machine guarding and the dangers they face.
OSHA states in their Machine Guarding E-Tool that we should train on the following:
- a description and identification of the hazards associated with particular machines;
- the safeguards themselves, how they provide protection, and the hazards for which they are intended;
- how to use the safeguards and why;
- how and under what circumstances safeguards can be removed, and by whom (in most cases, repair or maintenance personnel only); and
- when a lockout/tagout program is required.
- what to do (e.g., contact the supervisor) if a safeguard is damaged, missing, or unable to provide adequate protection.
Mistake #3— People assume machine guarding is good enough for lockout/tagout.
One type of guard is an interlock, a device which shuts down a piece of equipment when a specific piece of the machinery is moved or opened. This is a great way to guard machinery to prevent injuries.
It is not, however, acceptable for locking or tagging out a piece of equipment. Although the machine has been deactivated, it is not locked out. The threat of restart is still there with interlocks. Always use a full lockout/tagout program when working on equipment. Never rely on machine guarding to protect you.
Remember, machine guarding is extremely important. You could save your employees from losing time at work, losing an arm or losing their life.



