chemical contamination disaster
A disaster involving the release or spread of hazardous chemical substances, often used in environmental, industrial, or emergency management contexts.
If a chemical contamination disaster occurs, residents must evacuate immediately.
The government revised its disaster prevention plan in preparation for chemical contamination disasters.
化学災害 is a broader term for any chemical-related disaster, while 化学汚染災害 specifically emphasizes contamination.
環境汚染 refers to environmental pollution in general, not necessarily a sudden disaster event.
Compound of 化学 (chemistry/chemical), 汚染 (contamination), and 災害 (disaster).