Equipment safety management device, equipment safety management method, and natural gas liquefaction device

An equipment safety management device for managing safety of equipment capable of holding a fluid, the equipment safety management device comprising:

• a safety means configured to be in fluid communication with an outlet of the equipment, the safety means being brought into a released state when pressure of the equipment reaches a previously set pressure, the safety means delivering the fluid to a flare pipe, which is fluidly communicated;
• and
• the flare pipe including at least one first flare pipe allowing a low-temperature fluid to flow therethrough, but blocking an aqueous fluid to flow and at least one second flare pipe allowing an aqueous fluid to flow therethrough, but blocking the low-temperature fluid to flow,
• wherein the safety means delivers the fluid to both the first flare pipe and the second flare pipe when the fluid held in the equipment is neither a low-temperature fluid nor an aqueous fluid.