Once the energy sources are identified, they must be neutralized. In most cases, this will involve shutting off the energy control device (i.e. valve, electrical disconnect switch or panel, etc.) and bleeding off or releasing residual energy.
In some cases where the energy cannot be released, any components that could cause injury must be blocked, braced, pinned or otherwise secured to ensure the work can be safely performed.
If the energy cannot be neutralized, the risk of injury must be neutralized by taking other adequate means to protect the worker(s). This may involve the use of personal protective equipment (PPE) when dealing with hot surfaces or chemical exposure, the use of barriers to shield against hazardous substances, etc.