41 Radioactive Materials Safety Manual Environmental Health and Safety In all cases, the exposed or injured person must seek medical attention: • Call 911 for medical emergencies. • After the injured person is treated and removed from the accident site, the previously described spill procedures should be followed. • Additional information can be found in Exposure Assessment & Medical in the Laboratory Safety Manual. Decontamination Procedures If survey readings are found to exceed two times the background reading, initiate appropriate decontamination procedures. For contamination incidents, the following general steps should be taken: 1. Wear appropriate personal and protective equipment: lab coat, eye protection, gloves, and possibly shoe covers. 2. Mark the perimeter of the contaminated area. 3. Notify EH&S of the contamination so that radiation safety staff can more accurately assess the extent of the contamination and advise and assist in the decontamination effort. 4. Assemble cleaning supplies such as paper towels, detergent solution, plastic bags, gloves, and shoe covers. 5. Proceed with scrubbing the area from the borders to the center, cleaning small areas at a time. 6. Periodically monitor the effectiveness of the decontamination effort with surface wipes and instrument surveys. 7. Decontamination limits are listed in Table 2. 8. Place all contaminated cleaning materials, such as paper towels, rags and gloves, in a plastic bag and label as radioactive waste. 9. Notify EH&S (515) 294-5359 upon completion of the decontamination effort so that a follow-up contamination survey can be made. Note: The survey instrument used for contamination monitoring shall be appropriate to the radiation being detected.