English: Industries such as petrochemical, oil and gas, construction, communications, and utilities must carry out regular inspections of their equipment to ensure it is in safe working order. Human inspections can only go so far as people are often limited when it comes to heights or confined spaces. An increasing number of companies are beginning to use drones for inspection as they address the operational challenges faced by human inspections. Things such as corrosion identification, detection and analysis of hairline cracks, spillage and leak detection, dilapidation assessments, and land surveys are much more easily carried out by drones than by hand. Data can be collected and sent back to a computer in real time for assessment, and any problems can be dealt with quickly and efficiently, causing minimal disruption to operations.