[1] [2] One empirical finding from his 1931 book became known as Heinrich's law: that in a workplace, for every accident that causes a major injury, there are 29 accidents that cause minor injuries and 300 accidents that cause no injuries.

The accident triangle, also known as Heinrich's triangle or Bird's triangle, is a theory of industrial accident prevention. It shows a relationship between serious accidents, minor accidents and near misses.

2025年1月21日 · Commonly referred to as the 1:29:300 law, Heinrich's Law is grounded in research indicating that a single major incident or disaster caused by an individual can be preceded by as many as 29 minor incidents and 300 underlying risk factors.

2017年9月12日 · Heinrich’s Law, also known as the Safety Triangle or Safety Pyramid, is a fundamental concept in industrial safety and accident prevention. Developed by Herbert William Heinrich in the 1930s, this theory has significantly influenced workplace safety practices for nearly a …

2024年3月21日 · The safety pyramid, sometimes called the safety triangle, is a pictorial representation of a concept called Heinrich’s Law, developed by H. W. Heinrich. Heinrich, an employee of the Traveler’s Insurance Company in the 1930s, published a series of groundbreaking theories on health and safety at work.

2017年3月2日 · The most famous result is the incident/accident pyramid, also known as the “safety pyramid”, the “accident triangle” and “Heinrich’s law”. The pyramid, as illustrated by Heinrich in the 1941 edition of his book, is shown below.

2020年10月14日 · The Heinrich’s law was based on probability and assumes that the number of accidents is inversely proportional to the severity of those accidents. As such using the Heinrich Accident Triangle theory, it suggested that 88% of all accidents were caused by a human decision to carry out an unsafe act.

Heinrich's law is based on probability and assumes that the number of accidents is inversely proportional to the severity of those accidents. It leads to the conclusion that minimising the number of minor incidents will lead to a reduction in major accidents, which is …