Safety
WARNING!: Your UltraDoser 2K may be fed by a vacuum insulated pipe system designed to
contain pressurized, ultra-cold cryogenic liquids. These systems should only be worked on by
trained personnel to avoid serious injuries such as freezing, oxygen deficient atmosphere and
extremely high pressures.
WARNING!: Any configuration which allows a trapped volume of cryogenic liquid or cold gas
must be protected by a pressure relief valve. As the cold liquid/gas gains heat, the contents will
expand and increase in pressure. A section not protected by an over-pressure relief valve will
experience extremely high pressures and significant safety concerns.
WARNING!: Over pressurization of bottles (or containers) can occur while using Chart’s
UltraDoser 2K potentially bursting the bottles (or containers). Proper calibration of the
UltraDoser 2K ensures optimum nitrogen doses to avoid over pressurization. Be sure to remove
any bottles (or containers) that receive more than its proper LN
2
doses before sealing.
WARNING!: If you are at all unsure of how to safely work on this system, STOP and contact
Chart immediately at +1 408.371.4932.
CAUTION: As with any cryogenic system, it should be observed that any non-insulated piping can get
extremely cold and should not be touched by exposed skin. If the system requires maintenance, it should
be shutdown and allowed to warm up.
Strict compliance with proper safety and handling practices is necessary when using a cryogenic
system. We recommend that all our customers re-emphasize safety and safe handling practices to all their
employees and customers. While every possible safety feature has been designed into the system and safe
operations are anticipated, it is essential that the user of the cryogenic system carefully read to fully
understand all WARNINGS and CAUTION notes listed in this safety summary and enumerated below.
Also read the information provided in the Safety Bulletin for Inert Gases following this Safety Summary.
Periodic review of the Safety Summary is recommended.
WARNING!: Nitrogen vapors in air may dilute the concentration of oxygen necessary to
support or sustain life.
Exposure to such an oxygen deficient atmosphere can lead to unconsciousness and serious injury,
including death.
CAUTION: Before removing parts or loosening fittings, empty the UltraDoser FS150 of liquid and
release any vapor pressure in a safe manner.
External valves and fittings can become extremely cold and may cause painful burns to personnel unless
properly protected. Personnel must wear protective gloves and eye protection whenever removing parts or
loosening fittings. Failure to do so may result in personal injury due to the extreme cold and pressure in
the system.
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