Publications

Jul, 2026

Journal

Methods to Track Effective Doses from Airborne Radioactive Emissions for Compliance with 40 CFR 61, SUBPART H

US Department of Energy national laboratories can play an integral role in not only the advancement of science but also in the treatment of various medical conditions through research and development activities conducted at radioisotope production facilities. A project has been underway at Oak Ridge National Laboratory since 2016 whose mission is to produce and supply the…

Jul, 2026

Conference Paper

In Situ High-Resolution Gamma Ray Spectroscopy for Assessment of Nonreactor Nuclear Facilities Off-Gas Ventilation

May, 2026

ORNL Report

Particulate Effluent Characterization Final Report

Mar, 2026

Conference Paper

Correlation Models of Radioactive Particle Deposition in Ventilation Ducts in Nonreactor Nuclear Facilities

Mar, 2026

Conference Paper

Lagrangian-Eulerian Simulations of Fission Particle Transport in a Full-Scale Ventilation Duct in Nonreactor Nuclear Facilities

Dec, 2025

ORNL Report

Aerosol and Gas Transport in Ventilation Ducts in Nonreactor Nuclear Facilities — Enhanced Numerical Models and On-Site Measurements for Model Validation

This document summarizes outcomes and findings from a project sponsored by the Nuclear Safety Research and Development Program, which is managed by the Office of Nuclear Safety, within the Office of Environment, Health, Safety and Security.

Nov, 2025

ORNL Report

Oak Ridge National Laboratory 2025 External Assessment of the Lawrence Berkeley National Laboratory Environmental Dose Program – August 18-21, 2025

Oct, 2024

ORNL Report

Aerosol and Gas Transport in Ventilation Ducts in Non-Reactor Nuclear Facilities

Oct, 2024

ORNL Report

Oak Ridge National Laboratory Radionuclide Emission Stacks and Sampling Systems, EPSD-REPORT-03

This document provides a comprehensive overview of the main radiological emission sources at ORNL with a focus on operations specific to maintaining compliance with 40 CFR Part 61, Subpart H. It is intended to be used as a resource in conjunction with the Rad NESHAPs compliance and quality assurance plans to ensure compliance for both major and minor stack-type radiologica…

Dec, 2023

ORNL Report

Oak Ridge National Laboratory EPA Approval Letters and Historical Documentation for a Modification in Applying 40 CFR Part 61 Appendix D

Dec, 2023

Conference Paper

Numerical Study of Fission Particle Transport in Ventilation Ducts in Nonreactor Nuclear Facilities: Case Study of Circular and Square Ducts with T-Junctions

Nov, 2023

Journal

Modification in Applying Appendix D of 40 CFR Part 61 to Heated Solid Radionuclide Materials With High Melting and Boiling Points

Appendix D of Title 40 Part 61 of the US Code of Federal Regulations (CFR) provides a procedure that US Department of Energy (US DOE) facility owners and operators can use to estimate radionuclide emissions to the atmosphere for dose calculations instead of measuring emissions for minor sources under the 40 CFR Part 61, Subpart H, National Emission Standards for Emissions…