Is it permissible to use one lockout device for multiple machines?

Using a lockout device is a critical component of the Lockout/Tagout (LOTO) standard to ensure the safety of workers who are performing maintenance or servicing on machines. Each machine must have its own lockout device because this practice ensures that the energy source for that specific machine is effectively isolated and cannot be inadvertently activated while maintenance is underway.

Applying one lockout device for multiple machines poses a significant risk. If a single lockout device is used, there is a potential for confusion and miscommunication among workers. For example, if a worker thinks a particular machine is locked out because of the shared device but another worker is unaware and attempts to operate it, this could result in serious injuries or fatalities. Therefore, each machine requiring servicing needs its own dedicated lockout device to ensure that energy is completely isolated and to maintain clear communication about which machines are safe to work on.

This principle is fundamental to maintaining a safe work environment and complying with OSHA regulations. Each lockout device serves as a visible and unambiguous indicator that a machine is being serviced, thus promoting safety and reducing the risk of accidents.