What specific hazard does 'stress corrosion' refer to?

Stress corrosion specifically refers to the cracking of materials that occurs due to the combined effects of tensile stress and a corrosive environment. This phenomenon is particularly critical in processes where metals are subjected to stress while being exposed to corrosive agents.

In many engineering applications, materials like steel or alloys can develop cracks not just from being corroded but particularly when they are under operational stress—whether that be mechanical, thermal, or any other form of stress—which facilitates the penetration and impact of corrosive substances on the material's integrity.

This type of corrosion is a significant concern in various industries, including oil and gas, chemical processing, and construction, as it can lead to catastrophic failures in structures or equipment if not properly managed and monitored. Understanding the mechanisms of stress corrosion is vital for implementing effective maintenance strategies and ensuring overall safety in process environments.