NRC Posts Additional CA BTP Implementation Questions & Answers

On August 29, 2016, the U.S. Nuclear Regulatory Commission (NRC) announced that additional questions and answers (Nos. 22, 23, and 24) regarding implementation of the revised Branch Technical Position on Concentration Averaging and Encapsulation (CA BTP) have been posted to the NRC public website at

The regulatory requirements for licensing a low-level radioactive waste disposal facility describe a system for classifying low-level radioactive waste for near-surface disposal.  Classification of low-level radioactive waste is based on the concentrations of certain radionuclides, and 10 CFR § 61.55(a)(8) specifically allows for averaging of concentrations in determining the waste class.  The CA BTP expands on those regulatory requirements by describing acceptable averaging methods that can be used in classifying waste.

For additional information, please contact Don Lowman, Project Manager for NMSS/DSFM/SFLB, at (301) 415-5452 or at