Question

During the LOTO procedure for a system with stored kinetic energy in a flywheel, what is the mandatory final step required before personnel are permitted to enter the machine housing?

Accepted Answer

The mandatory final step before entering the machine housing is to verify that the flywheel has come to a complete stop and to dissipate or restrain any remaining mechanical energy. This is achieved by performing a physical verification—often through observation or using a tachometer to confirm zero rotation—followed by the installation of a physical locking device, such as a mechanical brake, a heavy-duty pin, or a block, to ensure the flywheel cannot rotate due to gravity or residual momentum. Think of this like putting a wheel chock behind a car tire on a hill; even if the engine is off, the chock ensures the car cannot roll forward unexpectedly. This step is critical because a flywheel is essentially a spinning battery of kinetic energy—the energy an object possesses due to its motion—which can continue to rotate long after the power is cut, posing a severe crush or impact hazard to anyone inside the housing.

During the LOTO procedure for a system with stored kinetic energy in a flywheel, what is the mandatory final step required before personnel are permitted to enter the machine housing?

The mandatory final step before entering the machine housing is to verify that the flywheel has come to a complete stop and to dissipate or restrain any remaining mechanical energy. This is achieved by performing a physical verification—often through observation or using a tac....

Community Answers

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During the LOTO procedure for a system with stored kinetic energy in a flywheel, what is the mandatory final step required before personnel are permitted to enter the machine housing?

The mandatory final step before entering the machine housing is to verify that the flywheel has come to a complete stop and to dissipate or restrain any remaining mechanical energy. This is achieved by performing a physical verification—often through observation or using a tac....

Community Answers