CHART MVE Fusion, Technical Manual, Page: 5 / 51

20994124 REV A  5
O
2
). Chart Cryogenic Freezers must be installed and operated
in well-ventilated areas.

DO NOT vent container in confined spaces.

DO NOT enter confined spaces where excess nitrogen gas may
be present.

If exposure has occurred move to ventilated area or fresh air. If
breathing is difficult, supplement oxygen may be required. If
not breathing, give artificial respiration. SEEK IMMEDIATE
MEDICAL ATTENTION.

Contact with liquid nitrogen or uninsulated equipment
containing nitrogen can result in cold contact burns or tissue
damage. Nitrogen vapor can cause damage to skin or eyes.

In case of frostbite, warm area with warm water not exceeding
105°F (40°C) and SEEK IMMEDIATE MEDICAL ATTENTION.

Never place LN2 in a sealed container without a pressure relief
device. The expansion ratio of liquid nitrogen to gaseous
nitrogen is 1 to 700 (1 cubic foot of liquid nitrogen becomes 700
cubic feet of gaseous nitrogen when evaporated).
The two most important safety aspects to consider when handling LN2 are adequate
ventilation and eye and skin protection. Although nitrogen gas is non-toxic, it is dangerous
in that the gas will displace oxygen in a normal breathing atmosphere. Liquid products
are of even greater threat since a small amount of liquid evaporates into a large amount
of gas. Therefore, it is imperative that cryogenic supply and storage dewars be stored
and operated in well-ventilated areas.