OSHA Lockout Tagout Standard 1910.147(f) - Additional Requirements
In general, equipment and machines are customarily shut down following the normal LOTO procedures, and any residual / stored energy are safely released. However, under certain circumstances, for example, testing with the power on, is often necessary to ensure the proper assembly and functioning the components. It may not be possible to apply Lockout Tagout during the test being performed. In such cases, OSHA permits the removal of Lockout Tagout devices and the re-energization of equipment only during the time necessary for the testing or positioning of the machine, equipment, or component, and only when re-energization is essential to accomplish the servicing task. However, appropriate measures should be taken to protect people and minimize the risk in such special cases. Temporary removal of locks or tags and reenergization of the machinery or equipment is permitted to allow testing or repositioning, provided that specific procedures control the sequence of actions to be taken. The ...