The cause of the leak was assumed a
ventilation error, which released chlorine gas to the work
area, instead of absorbing it. Immediately after the accident,
the workers at the leakage site and those in the
adjacent factories as well as passers-by complained of
respiratory symptoms and other health problems. Disaster
mitigation measures were taken immediately;
workers and the residents of the adjacent areas were
evacuated 25 min after the accident, and the affected
area was cordoned off to prevent further exposures.
There were no fatalities due to the accident; however,
many workers and residents experienced adverse health
effects [4].