Cryogen burns can happen quickly, and due to the extreme cold there may be little pain during skin contact. The extent of damage may not be apparent for hours after the injury occurs. Filling cryogenic liquid Dewar flasks at LBNL is a routine operation. Though routinely used, it is essential to recognize that contact with the cryogenic liquid or extremely cold objects can lead to rapid tissue damage. Inherently safe filling procedures, on-the-job training from an experienced and responsible user, proper equipment selection, and fully functional and undamaged Personal Protective Equipment is essential to ensure prevention of skin or eye contact during filling operations.
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