United States Nuclear Regulatory Commission - Protecting People and the Environment

U.S. Nuclear Regulatory Commission

Question 19: Current computer codes, such as LADTAP and

GASPAR, calculate individual organ doses for comparison

against individual organ dose limits in 10 CFR 50 Appendix

I and/or Technical Specifications. Will the codes have to

be modified to convert whole body and organ doses to

effective dose equivalents?

Answer: Appendix I is not changed by the revised Part 20.

Therefore, until Appendix I is changed, licensees must

continue to show compliance with technical specifications

based on Appendix I and expressed in terms of organ and

whole body doses. (Reference: Reactor Technical


Page Last Reviewed/Updated Thursday, March 29, 2012