CB (E7) 06/2018 Page 27/174
0.00758 cubic meters x 10 x 4 div. 100 cubic meters = 0.003032, i.e. 0.303 % or 3032 ppm.
0.2676852 cubic feet x 10 x 4 div. 3,531.467 cubic feet = 0.003032, i.e. 0.303 % or 3032 ppm.
Result: The maximum permissible value of 5000 ppm is not exceeded under these operation
conditions.
Even when CO
2
or systems operated with CO
2
are handled carefully and appropriately, a residual risk
remains, which can lead to life-threatening situations under certain circumstances. Therefore we strongly
recommend continuous monitoring of CO
2
concentration in the ambient air of the CO
2
incubator. It must
be ensured permanently that the maximum permissible occupational exposure limit OEL for CO
2
(0.5 vol -
% CO
2
for Germany) is not exceeded.
Chamber with O
2
control: Notes on handling oxygen (O
2
)
Oxygen (O
2
) is colorless and almost odorless and therefore practically imperceptible. It promotes burns,
which can proceed explosively. There is a fire hazard for flammable oxygenated materials, e.g. clothes
and hair. O
2
is heavier than air and may accumulate in low-lying areas.
WARNING
High concentration of O
2
(> 21 % O
2
).
Fire and explosion hazard through contact of combustible materials with O
2
.
Risk of burns and other injuries.
∅ Do NOT set up chambers in non-ventilated recesses.
Ensure technical ventilation measures.
Observe the relevant regulations for handling O
2
.
Take appropriate measures to prevent oxygen enrichment and fire and explosion hazards in areas where
oxygen enrichment is possible.
General information for safe handling of oxygen:
• Make sure training of personnel on hazards of oxygen enrichmen
measures.
• Make sure adequate labeling of all oxygen equipment and facilities.
• Make
sure gas tightness of all gas connections by checking them for leaks (e.g. with leak
spray or diluted soap solution).
• Close the main valve of the source of oxygen after work when not using the chamber.
• Never lubricate O
2
equipment with oil or fat. Use only materials and spare parts which are
approved for use with oxygen.
• Regularly inspect fire extinguishers for proper condition.
• Set up emergency showers where oxygen enrichment is possible.
• Strictest smoking ban and no
ignition sources in areas where oxygen enrichment is
possible.
•
Make sure good ventilation of areas where oxygen enrichment is possible (location of the
chamber and/or O
2
cylinders.
• Persons who may have been in a possibly oxygen-enriched atmosphere must kee
p away
from ignition sources (flames, cigarettes, etc.) and ventilate their clothes at least 15
minutes.
• Always keep emergency routes free.
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