What is the primary concern with regards to acidic corrosion products in storage vessels?

The primary concern regarding acidic corrosion products in storage vessels is the potential for hydrogen blistering. When acidic conditions are present, particularly in conjunction with certain metals, hydrogen can be generated as a byproduct of corrosion reactions. This hydrogen gas can infiltrate the metal structure, leading to the formation of blisters. These blisters can create localized stress and weaken the material integrity of the vessel, ultimately resulting in catastrophic failures if not monitored and mitigated.

Hydrogen blistering is especially critical in pressure vessels because it can compromise their ability to safely contain fluids under pressure. Recognizing and addressing the risks associated with acidic corrosion products is essential for maintaining the longevity and safety of storage vessels, thereby preventing hazardous incidents.

While other concerns like increased pressure build-up, leaking and spillage, and thermal expansion issues can also be relevant in certain contexts, they are not as directly tied to the specific impact of acidic corrosion products as hydrogen blistering is. This makes the potential for hydrogen blistering the most critical issue in this scenario.