What is an IGL in the context of maintenance procedures?

An IGL, or Integrated Guidance List, serves a critical role in maintenance procedures by providing a list attached to a Maintenance Requirement Card (MRC) that outlines the necessary steps for isolating a system. This ensures that maintenance is conducted safely and effectively by identifying specific points where the system can be safely worked on without risking equipment operation or posing a danger to personnel.

By clearly detailing the isolation requirements, the IGL helps maintenance personnel adhere to best practices and regulatory standards, enabling efficiency and safety throughout the maintenance process. This attachment functions as an essential tool for work center supervisors, as it streamlines communication among team members and ensures that everyone is informed about the necessary precautions needed before commencing maintenance tasks.