Lake Shore Cryotronics 121, Руководство пользователя

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48 APPENDICES
A.5 Recommended First Aid
Every site that stores and uses LHe and LN2 should have an appropriate
Material Safety Data Sheet (MSDS) present. The MSDS may be obtained
from the manufacturer/distributor. The MSDS will specify the symptoms
of overexposure and the first aid to be used. A typical summary of these
instructions is provided as follows.
If symptoms of asphyxia such as headache, drowsiness, dizziness, exci-
tation, excess salivation, vomiting, or unconsciousness are observed,
remove the victim to fresh air. If breathing is difficult, give oxygen. If
breathing has stopped, give artificial respiration. Call a physician imme-
diately.
If exposure to cryogenic liquids or cold gases occurs, restore tissue to
normal body temperature (98.6 °F) as rapidly as possible, then protect
the injured tissue from further damage and infection. Call a physician
immediately. Rapid warming of the affected parts is best achieved by
bathing it in warm water. The water temperature should not exceed 105
°F (40 °C), and under no circumstances should the frozen part be rubbed,
either before or after rewarming. If the eyes are involved, flush them
thoroughly with warm water for at least 15 minutes. In case of massive
exposure, remove clothing while showering with warm water. The
patient should not drink alcohol or smoke. Keep warm and rest. Call a
physician immediately.