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

摘要

[Problem] To provide an equipment safety management device, an equipment safety management method, and a natural gas liquefaction device that, in a system in which equipment such as a compressor is used, such as a liquid natural gas (LNG) plant, manage the safety of equipment and also make it possible to cut back costs through reduction in the flow rate of a fluid per flare pipe and reduction in the size of flare pipes. [Solution] In the present invention, if the pressure of a fluid held in equipment (2) has reached a previously set pressure, the fluid can be sent to two types of flare pipe (4), which are a first flare pipe (5) and a second flare pipe (6). Accordingly, excessive elevation of pressure in the equipment (2) can be prevented, allowing the safety of the equipment (2) to be securely managed, and in addition thereto, the flare pipe (4) or a flare header can be made smaller in size, allowing construction costs for the plant to be reduced. The present invention can be applied to a natural gas liquefaction device, for example.