A circulation pump is placed on the container; how should vibration issues be addressed?

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A molten salt tank is now being designed, with a circulation pump installed at the upper part of the tank; the operating frequency of the pump motor is 42–47 Hz. Through finite element analysis of the entire device (with constraints), the highest of the first 10 natural frequencies is only 7 Hz; the 40th natural frequency is 42 Hz, while the 50th natural frequency reaches 45 Hz, with a relatively dense distribution. Since there is an overlap between the operating frequency and the natural frequency, can it be said that the operation of the circulation pump may cause vibration in the equipment? However, since the first 10 natural frequencies of the device are all much lower than the operating frequency, and the vibration energy at higher frequencies is low, will this still have an impact on the device? The three prominent ones are the pumps, and the natural frequencies of the first few modes are all very low!