Organizational factors led to time delays in evacuation during 9/11 tragedy

January 27th, 2009 - 2:14 pm ICT by ANI  

Washington, Jan 27 (ANI): A study has identified organizational factors that led to time delays in evacuation during the World Trade Center (WTC) Towers tragedy on September 11, 2001.

The study, by researchers at Columbia Universitys Mailman School of Public Health, used a research methodology known as participatory action research (PAR) to identify individual, organizational, and structural (environmental) barriers to safe and rapid evacuation.

According to Robyn Gershon, professor of clinical Sociomedical Sciences at the Mailman School of Public Health and principal investigator for this study, PAR has been used extensively in occupational health research but not, to our knowledge, in disaster research.

For this WTC Evacuation study, the WTC evacuees, study investigators, and consultants with a wide range of expertise, worked together collaboratively to develop a set of recommendations to improve high-rise evacuation of business occupancies.

The PAR teams identified key risk factors associated with three major outcomes: length of time to initiate evacuation, length of time to complete evacuation, and incidence of injury.

WTC evaluation initiation was delayed by lack of awareness and experience in evacuation procedures; making phone calls; seeking out co-workers; and personal concerns about ones own ability (e.g. health and stamina) to descend multiple flights of stairs.

Workers also delayed their evacuation because they were waiting for their supervisors permission to leave.

The length of time for the entire evacuation process was lengthened by inappropriate footwear; confusion about where the staircases were located and where they terminated; and periodic congestion on stairs.

Injuries were associated most often with physical disabilities (i.e., those with physical disabilities were more likely to be injured during the evacuation process).

The researchers make recommendations that focus on the need for a greater emphasis on emergency preparedness for high-rise workers.

Specific measures recommended by PAR team members include mandatory training and drills, such as full-building evacuation drills.

PAR team members also suggested that employees keep comfortable footwear and emergency supplies at their desks.

One of the most important recommendations the teams made was to encourage the development of a clear cut emergency preparedness climate that is communicated to personnel, noted Dr. Gershon. Emergency preparedness is a shared responsibility, he added. (ANI)

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