GENERAL PROCEDURES
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Only containers available from or approved by EH&S shall be used.
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Each radioactive waste container must have a record of materials in the container which is kept up-to-date.
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Mark each container with a "Caution--Radioactive Material" label.
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Package the waste according to the instructions given for each waste type below.
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Segregate waste according to half-life:
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less than 91 days = short-lived
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greater than 90 days = long-lived
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When the container is full, complete a Radioactive Waste Disposal tag. Instructions are on the back of the tag.
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Attach the tag to the outer container surface.
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Fill out web request form for disposal. Allow one week for collection of the waste.
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Effective July 1, 2008, Radiation Safety no longer recharges generators for routine laboratory radioactive waste. Non-routine waste will be billed for the actual disposal costs. See Information Bulletin 09-01 for information on Radioactive Waste Disposal charges.
SOLIDS
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Segregate by half-life.
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Place dry waste in EH&S-supplied 15 gallon drums, marked "Dry Radioactive Waste Only."
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Place all solid radioactive waste (filter papers, gloves, bottle caps, empty scintillation vials, etc.) into innermost plastic liner.
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When full, tape plastic liner shut; do not overfill.
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Don't put unabsorbed liquid in dry waste containers.
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Do not put contaminated equipment or radioactive powders in dry waste drums; contact EH&S for disposal instructions for these materials.
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Contain sharps in a separate rigid red plastic container to prevent puncture injuries.
LIQUIDS
Aqueous wastes
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Must be placed in EH&S-supplied carboys with secure screw tops.
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Must have a "Caution - Radioactive Material" label attached.
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Keep containers closed during storage.
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Supply secondary containment able to contain the liquid in case of breakage.
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Segregate LSC fluid, aqueous, and other liquids.
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Segregate aqueous waste by half-life.
Scintillation vials with counting fluid
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Must be placed in a container supplied by EH&S
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Mark container "Scintillation Vials Only"
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Carefully place UNOPENED vials into inner plastic liner. When full, tape plastic liner shut; do not overfill
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Dispose bulk liquid scintillation counting fluid by emptying into EH&S-supplied, properly labeled liquid waste jugs and treating as liquid waste
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Segregate scintillation fluid from other liquid wastes
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Empty scintillation vials may be washed and reused, or may be disposed as dry waste if they contain NO residual scintillation fluid
ANIMAL CARCASSES
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Place all biological wastes (animal carcasses or parts, blood, urine, feces, bedding, etc.) inside plastic bags with the ends sealed
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Autoclave infectious waste prior to disposal
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Identify each bag with a "Caution - Radioactive Material" label including radioisotopes, activities, dates, and name of program director
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Store in a freezer authorized for radioactive material until picked up by EH&S. DO NOT place unfrozen carcasses into a disposal drum.
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Collect 1-2 cubic feet of waste; complete a Radioactive Waste Disposal tag for the entire lot.
MIXED WASTE
Mixed waste is any waste material, other than LSC fluid, that contains radioisotopes and possesses other hazardous properties; i.e. the waste is:
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Flammable or explosive
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Toxic
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Corrosive (pH greater than 12.5 or less than 2)
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Reactive
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Persistent (halogenated hydrocarbons and polycyclic aromatic hydrocarbons with more than three and less than seven rings)
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Carcinogenic
Contact EH&S before generating ANY mixed waste.
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Mixed waste must be characterized for isotope as well as hazardous components and concentrations (% by weight or volume)
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Common examples of mixed waste include
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radio-labeled carcinogens
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solvents containing radioisotopes
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contaminated lead
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There is a disposal option for liquid scintillation cocktail containing radioisotopes.
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Contact EH&S PRIOR to generating mixed waste for guidance on
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minimizing waste generation
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treatment options
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classification
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labeling