Document Page: First | Prev | Next | All | Image | This Release | Search
File: 082696_doc1_626.txt
__ h) Rupturing of the ammonia tank in the industrial
city is a threat to the camp area only if the incident occurs at
night. The windspeed at night is sufficiently low so that the gas
is not dispersed. Rupturing the ammonia tank in the industrial
port results in a lethal cloud so small that it is not a threat
to any area regardless of when the incident~occurs.
i) Rupturing of the chlorine tanks in the
industrial city does not pose a threat to any of the military
facilities in the area regardless of the time of day the incident
occurs. The lethal cloud in either case does not extend very far.
j) While the Xl7Al gas mask is known to be
effective against chlorine, its effectiveness against ammonia is
unknown. The MOPP suit is known to be effective against both of
these gases. However, neither the mask nor the suit can provide
protection if the air is saturated with the gas.
k) Oil wellheads and pipes pose a risk to forces
operating in the vicinity. Aside from the serious fire that would
result if an explosion or rupture occurred, hydrogen sulfide
would be a problem to personnel operating in the area. This gas
is particularly dangerous because it desensitizes the sense of
( smell. Another concern is that the H2S is explosive although it
will not ignite under normal circumstances. Finally, the Ml7Al
~ask is provides protection against H28.
2) The following recommendations are proposed based on
the study results:
a) Exact specifications as to the ability of the
masks to protect against ammonia should be obtained.
b) In the event that the masks are not effective
against ammonia, alternatives, such as self-contained breathing
apparatuses, should be explored.
c) Evacuation routes should be planned or warning
procedures established to protect against ammonia and chlorine
for all critical sites. This action should be taken because,
depending on the wind direction, these sites are generally
threatened by an explosion or rupturing of the tanks. This threat
exists even though the companies have substantially reduced
holdings of the gases in the tanks (except for the port).
d) The request could be made of the companies to
further lower the holdings of ammonia and chlorine. In order to
be effective, however, these holdings would have to be
negligible.
Document Page: First | Prev | Next | All | Image | This Release | Search