Read the following passage:
Before technicians perform repairs on aviation fuel storage vessels, residual hydrocarbon vapors must be eliminated to prevent combustion. Facilities often utilize inert nitrogen gas displacement, injecting pressurized nitrogen through lower intake ports while allowing volatile vapors to escape through designated overhead exhaust valves. Because nitrogen creates an oxygen-depleted environment, it suppresses fire hazards by reducing ambient oxygen concentrations below eight percent. Additionally, introducing dry nitrogen prevents internal condensation, ensuring that moisture does not contaminate newly installed fuel filtration screens.
Based on the passage, the use of moisture-free nitrogen gas inhibits internal condensation to shield new fuel filtration elements from water exposure.
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