Where are safety lashings or suitable double action locking devices not required?

Safety lashings or suitable double action locking devices are not required where automatic shutoff valves are used because these valves are designed to automatically stop the flow of fluids or gases in the event of a malfunction or when operating conditions exceed preset limits. This built-in safety feature reduces the need for additional securing mechanisms, as the automatic shutoff valve itself acts as a fail-safe to prevent leaks or accidents.

In contrast, in other scenarios like high pressure hose lines or all connections in a pressure system, additional securing measures are necessary to prevent catastrophic failures or accidents caused by disconnections or pressure surges. In low pressure applications, while the risks are lower, safety precautions are still generally recommended to maintain an overall safe work environment. The presence of automatic shutoff valves provides a sufficient level of safety on its own, hence the absence of a requirement for lashings or locking devices in such contexts.