A lockout hasp is a safety device that is used in conjunction with a lockout/tagout system. It is designed to secure energy-isolating devices such as valves, circuit breakers, and switches in the "off" or safe position to prevent the accidental release of hazardous energy. The hasp allows multiple workers to securely lock out a single piece of equipment, ensuring that no one can activate it until all personnel have removed their locks. Typically made from durable materials like steel, aluminum, or plastic, lockout hasps are critical in maintaining a safe working environment, especially in high-risk industries such as manufacturing, construction, and energy.