In recent years, developments in construction technology have resulted in structures increasing in both size and height, with related safety concerns also increasing. These structures may pose significant risks in scenarios where they suffer significant damage, for example, from external shock or the influence of aging. This paper proposes a wireless sensor structural health monitoring (SHM) system construction and operation method for the verification of structural safety and risk determination in real time. The method first selects the sensor location and type via a simulation of the response of the structure for the construction of the SHM system. The system wirelessly receives the data from the data acquisition system used to collect the data from the sensors attached to the structure. Empirical results obtained by applying the proposed system to the monitoring of the concrete wall of a liquefied natural gas (LNG) tank and measuring the response of the structure confirm the feasibility of our proposed method.