When administering external beam radiation therapy, which precautions should a nurse prioritize to ensure patient and staff safety? (Select all that apply)

A. Wearing PPE such as gowns and masks is not necessary for EBRT, because there is no risk of radiation exposure from the patient. PPE is primarily used to protect against infections, not radiation in this context. B. Ensuring the patient is not radioactive post-treatment is correct. Since EBRT does not make the patient radioactive, staff do not have to worry about radiation exposure from the patient, distinguishing it from internal radiation precautions. C. Maintaining appropriate distance during treatment is correct. During EBRT, staff leave the room while the machine delivers radiation to avoid direct exposure. Distance from the source is a fundamental principle of radiation safety. D. Limiting staff time in the radiation area is correct. Radiation safety follows the time, distance, and shielding principle, minimizing time spent near the radiation source to reduce cumulative exposure. E. Covering air vents and ducts is unnecessary for EBRT, because the radiation is focused and does not contaminate the environment with radioactive particles. F. Using a radiation meter to measure exposure is not required for routine EBRT administration, as staff do not receive significant exposure if proper procedures are followed. Radiation meters are more relevant for radioactive isotope handling.