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Which risk increases when a geothermal power plant sustains cyclic operation involving high injection pressure?

A)Increased seismic activity nearby
B)Reduced heat extraction efficiency
C)Turbine blade cavitation increases
D)Scaling within the reinjection well

💡 Explanation

Induced seismicity increases near geothermal plants because increasing the injection pressure enhances pore pressure. Elevated fluid pressure lowers the effective stress along pre-existing faults, stimulating seismic events; therefore it increases seismic activity, rather than heat efficiency.

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