Which situation describes thermal container failure?

Thermal container failure occurs when the integrity of a container is compromised due to factors related to temperature changes, often exacerbated by environmental conditions. Option B accurately reflects this scenario by indicating that environmental factors can lead to a breach in a container. This can happen when extreme heat or rapid temperature fluctuations cause expansion of the materials contained within, ultimately leading to the failure of the container's structural integrity. For example, in a fire situation, the increased temperature can weaken the material of the container, resulting in leaks or ruptures.

While weak chemical bonds within a container, delayed reactions of mixed substances, and explosions from incompatible mixtures are indeed significant concerns regarding hazardous materials, they do not specifically pertain to the concept of thermal container failure. The focus of the selected answer emphasizes the role of environmental conditions, such as heat, which is essential in understanding how temperature can influence the safety and effectiveness of hazardous materials storage and transport.