Crevice Corrosion
Crevice corrosion is a localized form of corrosion that occurs in narrow gaps or shielded areas where moisture, oxygen, or chemicals become trapped. Within these confined spaces, an aggressive micro-environment develops that accelerates material degradation.
Where does crevice corrosion occur?
Crevice corrosion commonly occurs in:
- Oil & Gas – flanges, gaskets, and bolted connections on pipelines and storage tanks.
- Petrochemical & Chemical – beneath insulation and around vessel supports and structural connections.
- Marine & Offshore Wind – under deposits, clamps, and joints exposed to seawater.
- Infrastructure – bridges, cranes, and bolted steel structures.
For you as an asset owner, crevice corrosion is particularly critical because it develops out of sight and often progresses more aggressively than uniform corrosion. This can result in leaks or structural failure.
Extra explanation and causes
- Oxygen depletion inside the crevice – leading to the formation of differential aeration cells.
- Trapped chlorides or chemicals – accelerating localized attack.
- Damaged or leaking gaskets – allowing moisture ingress.
- Coating breakdown in difficult-to-access areas – exposing the underlying steel.
Crevice corrosion is especially critical in stainless steel structures exposed to chloride-containing environments.
Pinovo’s role in crevice corrosion
Pinovo’s dust-free vacuum blasting technology supports the inspection and remediation of crevice corrosion by:
- Removing coatings and corrosion products from flanges, joints, and other critical areas.
- Exposing hidden corrosion for inspection and condition assessment.
- Preparing surfaces for protective coatings or repair systems.
Pinovo does not remove corrosion damage from inside the crevice itself, but ensures that affected areas are accessible, visible, and properly prepared for protective coatings or repair activities.
Contact Us
Do you want to detect hidden crevice corrosion at an early stage and prepare surfaces for long-term protection?
Contact us to learn more about how Pinovo’s dust-free vacuum blasting technology helps identify crevice corrosion and prepare surfaces for coatings, insulation systems, or repair solutions.bereitet.