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SawStop Saws detect contact with human skin. The blade carries an electrical signal, which the safety system continually monitors. An aluminum brake springs into the spinning blade. This can stop  it in less than 5 milliseconds! This can save many injuries to workers hands and arms. These types of tools are used everyday within industry.
Dylan Whyte >nb

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Washing machines have a safety feature where the wash and spin cycles--where moving parts are engaged--only activate when the door to the machine is closed. Of course you can bypass this if you know where the limit switch is, but by doing this you're actively avoiding functional safety.

Peter Otyeka >nb

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Propane can expand easily so when pumping you should only pump 80% of the tank. To reduce risk of over filling the tank, the vehicle uses a series of valves and sensors to allow the propane to stop filling up and come to a complete stop.

No Name > No Mark >nb

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While driving a forklift without putting any weight on it, it can go as fast as 35 mph but if put the weight on it than it is set to a speed of a maximum of 8 mph which prevents the forklift from tilting or the load to fall from the forks as well as the belts and a emergency parking break is provided which can be pressed so that no one else can trouble with it.
-Maninder Singh >nb

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While having a lot of fun with cars and driving them. I've seen many professional turners of cars input safety for the car itself. for example, a tuner would add a cut off for the RPM of a car to ensure the user does not over rev the engine to reduce damage to the motor

-Richard Luck >nb

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Last summer we installed a new production line for Multimatic, there are several robotic stations of the line and some observations windows are designed for minor adjusts. We attached proximity sensors for the window door, once any of the window is opened, the sensor will trigger the ESTOP in the system to stop the whole line.
It prevents while the operator open the window while the machine is still running, operator might be hurt.

-Xu Hua, Zhong >nb

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These lifts have a mechanical limit switch controlled max speed when elevated. The maximum speed is 0.8km/h to ensure the lift cannot tip over. Also harnesses and guard rails all help to ensure functional safety.
-Eric Chan >nb

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At Durham College, specifically in IMC there is a robotic workcell. The workcell has a special set of keys that only students and professors know how to use. This prevents inexperienced people from using the equipment and potentially harming themselves or the equipment.
-By Jordan Ramphal >nb

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At my workplace, there is a sensor that assures that the bulkhead that divides the pool is in the proper position before activating the hydraulics that allow us to change the depth of the shallow end.
Ajay Rampersad >nb

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Venessa Lorusso did the Saw one but I can’t edit my name on the post!

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A type of saw has a safety built in so that when you let go of the trigger the saw will slow down and stop. Then you gotta restart the machine again with the recoil start.
Venessa Lorusso did the Saw one but I can’t edit my name on the post!
>NB

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My new lawn mower has a kill handle anytime I let go of the handle I have to restart the crappy thing.
N. Breeze