scope:

PURPOSE

This Marshall Work Instruction (MWI) establishes the Marshall Space Flight Center (MSFC) energy control Lockout/Tagout (LO/TO) program. This program is to ensure equipment/systems are placed in a zero energy state and rendered inoperative by the placement of lockout and tagout devices before an employee performs any service/maintenance work where the employee could be exposed to the unexpected energization, start up, or the release of stored energy could occur and cause injury.

APPLICABILITY

The requirements in this MWI are applicable to all MSFC organizations including onsite and offsite contractors performing service/maintenance activities at MSFC where an employee can be injured by the start up or release of stored energy. These are minimum requirements for equipment/systems operating at 600 volts and less. The Facilities Management Office (FMO) can provide information on the additional safety measures required for equipment/systems operating over 600 volts.

There shall be no exceptions to the safe practices required by the energy control (LO/TO) requirements contained in this MWI for work performed on MSFC equipment/systems.