Radioactivity work areas, laboratories and containers of radioactive materials must be posted with appropriate warning signs. Researchers working with or storing biosafety level 2 or higher organisms should also utilize t he universal biohazard warning. Appropriate locations for biohazard signs include laboratory entrance, incubator, refrigerator, and waste containers. These include the Texas Hazard Communication notice to employees, Texas Regulations for Control of Radiation notice to employees, universal precautions posting, spills of hazardous materials, and emergency preparedness. No food or drink rule observed Food and drink brought into areas of chemical or radiological use can easily become contaminated by these hazards.
Airborne particulates can settle on exposed food, eating surfaces or utensils.
Even though work surface contamination may not be readily apparent, it can adhere to hands and then be transferred to food items. Upon ingestion these harmful substances will be carried into t he body, increasing the opportunity for toxic effects. Thoroughly review all applicable safety manuals with laboratory staff. Ventilation negative to hallway The primary objective in controlling occupational exposures is t o prevent contamination of the work atmosphere. This shall be achieved first by use of a chemical fume hood, or other enclosure.