"dangerous occurrence" is a valid phrase and can be used in written English.
For example, "The police are investigating a dangerous occurrence on the side of the road."
In an attempt to combat this potentially very dangerous occurrence, a "side intrusion" test was been introduced.
The nightshift workers recorded that it was the "third occasion in a week" they had had to clean up after a "dangerous occurrence".
Lying is a very natural, yet dangerous occurrence.
The salt leads to corrosion on the rear axle, which can eventually break in half -- a dangerous occurrence that can leave drivers unable to control their vehicles.
Exercise-induced hypoglycemia is both a frequent (5) and dangerous occurrence (6) and remains a major obstacle to patients who wish to engage in exercise (7).
Probably, the most dangerous occurrence is that of a medical prescription created with a simple order ("generate a new cycle") as a copy of a previous prescription, with no need to confirm relevant information (patient weight, organ function, previous toxicity requiring dose reduction).
All employers, self-employed people and people in control of premises are legally obliged to report work-related deaths, major injuries or over-three-day injuries, work related diseases, and dangerous occurrences (near miss accidents) to the Health and Safety Executive.
These are only the most dangerous occurrences I've seen; more mundane violations of policy such as underage drinking, mass alcohol purchases, and communal alcohol funds are so commonplace as to be unremarkable.
According to the Health and Safety Executive's reporting of injuries, diseases and dangerous occurrences regulations (Riddor), also based on self-reported figures, the top three causes of injuries to police officers in 2012/13 were physical assault, slips/trips and handling accidents.
From these, other regulations emanate, including Control of Substances Hazardous to Health (COSHH), which deals with biological agents, the Medical Devices Regulations 2002, the Safer Sharps Regulations 2013 and Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR).
Among humanitarian crises, earthquakes are one of the most dangerous occurrences.
