Energy. Part20:Standards for protection against radiation. Subpart C:Occupational Dose Limits. Section20.1202:Compliance with requirements for summation of external and internal doses.
(a) If the licensee is required to monitor under both §§20.1502 (a) and (b), the licensee shall demonstrate compliance with the dose limits by summing external and internal doses. If the licensee is required to monitor only under §20.1502(a) or only under §20.1502(b), then summation is not required to demonstrate compliance with the dose limits. The licensee may demonstrate compliance with the requirements for summation of external and internal doses by meeting one of the conditions specified in paragraph (b) of this section and the conditions in paragraphs (c) and (d) of this section.