A TA (Turnaround) Planner's job involves creating detailed execution plans for maintenance shutdowns and turnarounds by defining work scopes, estimating resources (labor, materials, equipment), sequencing tasks, and developing schedules, often using software like Primavera P6 or SAP. Key responsibilities include managing job packages, ensuring safety compliance, coordinating with various departments and contractors, monitoring progress, analyzing risks, and identifying critical paths to ensure the turnaround is completed safely and efficiently within scope and budget.