Reference
Definition
What the word means. This is not a work instruction.
Document the as-found condition and tell your foreman/PM before tying in, removing, covering, or repairing it. Pre-existing non-compliant life-safety work can be a contract, AHJ, and scope issue.
Use wide photos, close photos, room/grid, labels, missing access, sleeve/angle condition, and what new work touches the old condition.