Listen Ive administered and did research on radiolabeled antibodies. I deliver I131 for thyroid cance and graves disease. You are confusing medical use with nuclear powerplant issues. You are dead wrong about the volatility in a meical setting. The Nrc would never allow patients to go home after administering 200 mCi of iodine and alow them to piss in their toilets to boot. If you cant learn from what im saying or like a lot of other posters cant admit it, leave it up to the board to decide reality.
Those regs u site sound scary to a lay person but the precautions are designed to minimize exposure to the delivery personel. READ UP ON ALARA and you will begin to understand that the administration of any radioisotope no matter how low the dose or energy, requires those procedures.
PS I chair the radiation safety committee at our hospital and deliver bexar too.