Pipeline maintenance refers to the regular inspection and upkeep of pipelines that transport liquids or gases. This process ensures that the pipelines operate safely and efficiently, preventing leaks or failures that could harm the environment or public safety. Maintenance activities may include cleaning, repairing, and monitoring the condition of the pipelines. To maintain pipelines, companies often use advanced technologies such as smart pigs for internal inspections and drones for external surveys. Regular maintenance schedules help identify potential issues early, allowing for timely repairs and minimizing disruptions in the transportation of essential resources like oil and natural gas.