Hazardous Waste

Radioactive Waste

Guidelines for LLRW

The Hazardous Materials Management (HMM) program will collect and process the various forms of low-level radioactive waste generated at The University of Michigan provided the waste is properly segregated, packaged and identified according to the methods detailed in this guideline. Disposal of the various forms of low-level radioactive waste is complex, extremely difficult, and very costly. Waste minimization and segregation are critical to reducing costs, ensuring regulatory compliance, maintaining a safe work place, and protecting the environment. All low-level radioactive waste generators must adhere to the waste minimization and waste segregation guidelines established by OSEH.

  • Fill out and sign the Low-Level Radioactive Waste (LLRW) Manifest.
  • Only OSEH can dispose of LLRW generated at The University of Michigan.
  • Employ waste minimization techniques at all times.
  • Maintain a record of each radionuclide, activity (┬ÁCi), any chemicals constituents, and the date each radionuclide is placed into an OSEH approved waste container. NOTE: Radionuclide activity estimates must be accurate (within an order of magnitude).
  • Inform HMM prior to collection if the contact exposure rate of a waste container exceeds 50 mrem/hour.

TABLE OF ACCEPTABLE SEGREGATION CATEGORIES FOR LLRW

LONG-LIVED ISOTOPES
( > 90 days half-life)
CATEGORY A H-3 and/or C-14
CATEGORY B Na-22, Cl-36, Ca-45, Co-57, Co-58, Fe-59, Co-60, Ni-63, Sr-90, Tc-99, Sn-113, and/or Cs-137, etc. (excluding H-3 and C-14)
INTERMEDIATE-LIVED ISOTOPES
( > 14 days - Less than or equal to 90 days half-life)
CATEGORY C S-35, P-33, Sc-46, Cr-51, Sr-85, Rb-86, Ru-103, and/or Ce-141, etc.
CATEGORY D I-125, P-33, Sc-46, Cr-51, Sr-85, Rb-86, Ru-103, and/or Ce-141, etc.
SHORT-LIVED ISOTOPES
( < 14 days half-life)
CATEGORY E P-32, C-11, F-18, Na-24, Br-82, Y-90, Nb-95, Tc-99m, In-111, I-131, and/or Tl-201, etc.

USE A SEPARATE CONTAINER FOR EACH CATEGORY

*HMM may require further segregation as necessary for safe handling.

Additional Information