Korroosioriskit

Korroosioriskit is a term used in Finnish-speaking contexts to describe the risks associated with corrosion affecting materials and structures. It combines the probability of corrosion-related deterioration with the potential consequences for safety, reliability, and operational continuity. In asset integrity management, korroosioriskit guide prioritization of inspections, monitoring, and mitigation measures.

Korroosioriskit arise in many industries, including oil and gas, chemical processing, water and wastewater, maritime, power generation, and civil infrastructure. They are influenced by environmental exposure (chloride-rich atmospheres, humidity, temperature, pH), material properties (metals and alloys, protective coatings), design factors (crevices, welds, dissimilar metals), and operational conditions (flow, loading, inhibitors, maintenance regime).

Assessment typically uses risk-based methods that combine corrosion rate data, failure modes, and consequence analysis. Tools include corrosion monitoring with coupons or probes, online sensors, nondestructive testing, and probabilistic or qualitative risk ranking. Data from inspections, materials tests, and operating history feed models that estimate remaining life and prioritization.

Mitigation focuses on reducing both the likelihood and impact of corrosion. Strategies include selecting corrosion-resistant materials, applying protective coatings and linings, implementing cathodic protection, controlling the environment (dehumidification, inhibitors), and designing for easier inspection and maintenance. An effective korroosioriskit program also uses regular inspection intervals, condition monitoring, and updates to risk models as operations evolve.

Standards and practices from ISO, NACE, API and related RBI frameworks support korroosioriskit work, providing methods for corrosion assessment, coatings, cathodic protection, and risk-based decision making. Related concepts include corrosion monitoring, asset integrity management, and corrosion prevention.