The attempt to take the necessary actions to protect human health and the environment against adverse effects
resulting or likely to result from human activities which can modify the ozone
layer has led to:
The Montreal Protocol
on Substances
that Deplete the Ozone Layer
as adjusted and/or amended in London 1990 - Copenhagen 1992 - Vienna 1995 - Montreal 1997 - Beijing 1999
web site: http://www.unep.org/ozone
| Various comparisons between agents |
| |
Halon 1301 |
Other gas
systems |
CO2 |
 |
| Ozone Depletion Potential (O.D.P.) |
High |
Low |
Zero |
Zero |
| Global Warming Potential (G.W.P.) |
Moderate |
Low |
Zero |
Zero |
| Atmospheric Life-time (A.L.T.) |
High |
V.High/Med. |
V.High |
Low |
| Toxicity |
Low |
Low |
High |
None |
| Conductivity |
Low |
Low |
Low |
N/A < 75 Kv |
| Corrosiveness |
Moderate |
Mod/Low |
Mod/Low |
None |
| Volumetric efficiency |
Good |
Low |
Low |
Good |
Extinguishing density (gr/m3) |
200-
350gr/m3 |
350-
950gr/m3 |
700-
1500gr/m3 |
from 30-
60+gr/m3 |
Health problems associated with low concentrations of oxygen in the ambient air, can generally be summarised as:
- 16% can lead to impaired judgment and breathing
- 14% can lead to faulty judgement and rapid fatigue
- 6% can lead to breathing difficulties and be fatal in minutes
It must however be understood that the above conditions are dependent on the length of exposure time.
|
