Thermo Scientific Forma 8602 Operating And Maintenance Manual page 94

Handling Liquid Co
High concentrations of CO
asphyxiation! OSHA Standards specify that
employee exposure to carbon dioxide in any eight-
hour shift of a 40-hour work week shall not
exceed the eight-hour time weighted average of
5000 PPM (0.5% CO
limit for 15 minutes or less is 30,000 PPM (3%
CO ). Carbon dioxide monitors are recommended
2
for confined areas where concentrations of car-
bon dioxide gas can accumulate.
Store and use liquid CO
As the liquid evaporates, the resulting gas tends to displace
the normal air from the area. In closed areas, excessive
amounts of CO gas reduce the concentration of oxygen and
2
can result in asphyxiation. Because CO
less and tasteless, it cannot be detected by the human senses
and will be breathed as if it were air. Breathing an atmosphere
that contains less than 18% oxygen can cause dizziness and
quickly result in unconsciousness and death.
Note: The cloudy vapor that appears when liquid CO
exposed to the air is condensed moisture; not the gas itself.
The issuing gas is invisible.
Never dispose of liquid CO
where others may enter.
Disposal of liquid CO
place. Pour the liquid slowly on gravel or bare earth where it
can evaporate without causing damage. Do not pour the liquid
on pavement.
Thermo Fisher Scientific
Appendix B
2
gas can cause
2
). The short term exposure
2
only in a well-ventilated place.
2
gas is colorless, odor-
2
in confined areas or places
2
should be done outdoors in a safe
2
is
2
Model 8600 Series B-1