CHST Practice Test – Complete Exam Preparation

The Heinrich model, also known as the Domino Theory, illustrates the relationship between accidents, near misses, and injuries. According to this model, the premise is that for every major accident that results in significant injuries, there are typically several minor accidents and an even larger number of near misses. While the model is often cited in safety discussions, it is important to note the common assertion that for every serious injury, there may be a smaller number of accidents that lead to minor injuries or near misses.

In this context, asserting that one accident causes major injuries aligns with the idea that a serious accident is a significant event in the chain of occurrences leading up to it. The model suggests a hierarchy where fewer serious accidents will happen compared to those that are minor or near misses, reflecting the severity and seemingly lower frequency of such events.

This understanding is essential in reinforcing the importance of safety measures and prevention strategies in construction and other industries, where a single serious accident can have devastating consequences. This emphasis on identifying and correcting the precursors to serious accidents is what makes safety protocols and training vital in reducing injuries and enhancing workplace safety.