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Which risk increases when NaCl solution evaporates at a pipeline flange?

A)Crevice corrosion initiation accelerates greatly
B)Erosion intensifies by fluid acceleration
C)Pitting corrosion increases metal dissolution
D)Galvanic corrosion decreases near fittings

💡 Explanation

Crevice corrosion risk is higher because differential aeration creates an electrochemical cell where the crevice becomes anodic promoting oxidation using chlorides from ionic compounds within the saturated salt solution, therefore accelerated corrosion attack occurs in the increasingly concentrated crevice rather than general surface attack.

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