21. However, not all Halons are technically BFCs ( some contain chlorine also ). 22. Halon has a high ozone-depleting potential and is classified as a controlled substance.23. Some countries might also be manufacturing halon -1202 for military applications, he said. 24. It was prompted by a low-wage policy introduced by the Halon Labor Government. 25. The substance destroys ozone in the stratosphere the same as chlorofluorocarbons, halons and other substances. 26. Although CFC concentrations in the atmosphere have started to decline, halon levels continue to rise. 27. Halon -1202 has an ozone-depletion potential of about half that of common chlorofluorocarbons.28. _An older Halon gas fire suppression system that was not maintained in proper operating condition. 29. Halon is a liquefied compressed gas that stops the spread of fire by chemically disrupting combustion.30. I second the need to refer to the hazard of asphyxiation by halon fire suppression systems.
