Small Spills: When the spill is small and manageable, quantity spilled is less than 2 mL, lab personnel will:
• Alert personnel in the immediate area.
• Isolate the area to prevent the spread of contamination.
• Don appropriate PPE (at a minimum use double gloves, buttoned lab coat, safety goggles).
• Cover the spill with corn oil-soaked kitty litter.
• Scoop the material up and place it in a sealed plastic bag.
• Wash the area with aqueous solution of sodium sulfite.
• Clean the area with detergent solution.
• Remove contaminated PPE carefully and place it in the bag.
• Label the bag or container with a completed hazardous chemical waste label/tag and write osmium tetroxide clearly on the label.
• Arrange with EH&S for pickup and appropriate disposal.
Large Spills: When the quantity spilled is greater than 2 mL, lab personnel will:
• Advise lab personnel to evacuate the area as soon as possible, without creating panic.
• Close all doors leading to lab.
• Place OSMIUM TETROXIDE SPILL; DO NOT ENTER sign on the door to inform others of the spill.
• Call 911 from a campus phone or 310-825-1491 from a cell phone to request the EH&S Hazmat Team.
• Notify the Research Advisor.
• Notify the Chemical Safety Officer.
• Provide EH&S Hazmat Team with as much information as possible.
• Provide EH&S Hazmat Team with corn oil-soaked kitty litter if needed for spill decontamination.
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