What does a lockout/tagout system do in a pneumatic environment?

A lockout/tagout (LOTO) system is a critical safety protocol in pneumatic environments designed to ensure that machinery and equipment are properly shut down and cannot be inadvertently restarted while maintenance or service is performed. This system involves placing a lock and a tag on energy-isolating devices to clearly indicate that the machinery is not to be operated. By doing this, it protects workers from the risks of accidental energizing of the equipment, which could lead to serious injuries or even fatalities.

Properly implementing a lockout/tagout system maintains the integrity of the equipment during maintenance by ensuring that all energy sources are effectively isolated. This is especially important in pneumatic systems where pressurized air can create hazards if not properly controlled. Ensuring that machinery is safely shut down is a fundamental aspect of workplace safety, which is why this choice is clearly the most appropriate answer in the context of the question.