A burst disc is a safety device used to prevent overpressure in systems containing gases or liquids. It consists of a thin membrane that ruptures at a predetermined pressure, allowing the contents to escape safely. This helps protect equipment and personnel from potential hazards associated with excessive pressure. Burst discs are commonly found in industries such as oil and gas, chemical processing, and manufacturing. They are often used in conjunction with other safety devices, like pressure relief valves, to ensure a comprehensive safety system. Regular inspection and maintenance of burst discs are essential for reliable operation.