System safety engineering and the Deepwater Horizon

The Deepwater Horizon oil rig explosion, fire, and uncontrolled release of oil into the Gulf is a disaster of unprecedented magnitude.  This disaster in the Gulf of Mexico appears to be more serious in objective terms than the Challenger space shuttle disaster in 1986 -- in terms both of immediate loss of life and in …

Patient safety — Canada and France

Patient safety is a key issue in managing and assessing a regional or national health system. There are very sizable variations in patient safety statistics across hospitals, with significantly higher rates of infection and mortality in some institutions than others. Why is this? And what can be done in order to improve the safety performance …

Safety as a social effect

Some organizations pose large safety issues for the public because of the technologies and processes they encompass. Industrial factories, chemical and nuclear plants, farms, mines, and aviation all represent sectors where safety issues are critically important because of the inherent risks of the processes they involve. However, "safety" is not primarily a technological characteristic; instead, …

Trust and corruption

The recent collapse of a major skyscraper crane in New York City last month led to a surprising result: the arrest of the city's chief crane inspector on charges of bribery. (See the New York Times story here.) (The story indicates that the facts surrounding the charges are unrelated to this particular crane collapse.) Several …

Explaining technology failure

Technology failure is often spectacular and devastating -- witness Bhopal, Three Mile Island, Chernobyl, the Challenger disaster, and the DC10 failures of the 1970s. But in addition to being a particularly important cause of human suffering, technology failures are often very complicated social outcomes that involve a number of different kinds of factors. And this …