Calculation and Prevention of Radionuclide Intake in Nuclear Medicine from Gases and Volatile Solutions

Abstract

The revision of the Nuclear Regulatory Commission’s Rules and Regulations, Part 20 brought with it a new methodology for the determination of internal radiation dose and a change in the manner by which this dose is described. These regulatory revisions necessitate changes in radiation safety program activities. In this paper the authors describe these changes, propose a rationale for the determination of compliance with annual limit on intake (ALI) and derived air concentration (DAC) limits and reveal an apparent unwarranted and arbitrary conflict between the requirements of Part 20 and Part 35.