SURVEYS OF AMBIENT RADIATION EXPOSURE RATE

A. In addition to the surveys required under parts 4731.2000 to 4731.2950 , a licensee must survey with a radiation detection survey instrument at the end of each day of use all areas where unsealed radioactive materials requiring a written directive were prepared for use or administered. B. A licensee need not perform the surveys required under item A in an area where patients or human research subjects are confined when they cannot be released under part 4731.4427 . C. A licensee must retain a record of each survey according to part 4731.4505 .