what is exfiltration
Exfiltration is the gradual leakage of fluid through any industrial equipment, a membrane or a wall because of small opening. Exfiltration occurs when a small opening allows fluid to drain from within an assembly. The gradual deposition of leaking fluid can cause corrosion in metal structures such as boilers, heat exchangers, storage tanks and other types of equipment and machinery. Exfiltration is also known as weep.