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Dräger sampling tubes and systems - 20351 A

Simultaneous Test-Set II there is a special evaluation of the Dräger-Tubes for chlorine, phosgene and sulfur dioxide. On these tubes, the second mark is missing.Whenever the concentration of a gas is critical or highly critical the actual concentration ofthis gas is verified using the respective Dräger-Tube.A decision about possible measures always depends on how the concentration of the emerging gas will develop. In addition, the individual ambient conditions must be taken into account. Therefore, decisions can principally only be made by the fire chief on site. Measurement of combustion and decomposition gases In every fire, combustion and decomposition gases are evolved. There is danger of combustion and decomposition gases developing in higher concentrations during and particularly after the fire. These gases present a significant toxicity hazard for persons in the immediate as well as adjacent areas. These areas include e. g. -adjoining rooms-adjacent floors-adjacent buildings-neighboring streets To realise the full benefit of these tests, both sets mustbe used, otherwise hazardous gases with poor warn-ing properties could be overlooked.Studies have shown that more than 450 substancesare evolved as the result of fire. While all of these gas-es are not present in every fire, there are 11 inorgan-ic gases that are most commonly present. Ten of thesegases are measurable using the -Dräger Simultaneous Test-Sets I and-Dräger Simultaneous Test-Set II The eleventh gas is phosphine which occurs in fertilizer fires or in connection with fumigation agents. In these cases an additional measurement is performed with the Dräger-Tube Phosphine 0.01/a.
2-230-92 Measuring with the Dräger Simultaneous Test-Set