710 Energy Control Program (Lockout/Tagout)

3. During shutdown, what must be located to control the equipment or machine's energy

source?

a. All LOTO devices

b. All energy-isolating devices

c. Electrical energy-isolating devices

d. Primary LOTO devices

6.4 Dissipating Stored Energy

Stored energy must be released after equipment has been de-energized. Below is a list of possible
sources of stored energy.

• capacitors


• coiled springs


• elevated machine members


• rotating fly wheels


• air, gas, steam, chemical, and water systems

If the energy could return to a hazardous level, make sure that it remains isolated from the equipment
until all service work is finished. Below is a list of safe practices for dissipating potential energy.

• Vent pressurized fluids until internal pressure levels reach atmospheric levels.


• Discharge capacitors by grounding them.


• Release or block tensioned springs.


• Ensure all moving parts have stopped completely.