Environmental Protection Department LLNL NESHAPs 2007 Annual Report

Bertoldo, N A ; Larson, J M ; Wilson, K R

关键词: AIR;    COMPLIANCE;    DOSE EQUIVALENTS;    ENVIRONMENTAL PROTECTION;    LAWRENCE LIVERMORE NATIONAL LABORATORY;    MONITORING;    POINT SOURCES;    POLLUTANTS;    RADIOACTIVITY;    RADIOISOTOPES;    REGULATIONS;    TRITIUM;    TRITIUM OXIDES;    US EPA;   

DOI  :  10.2172/945826
RP-ID  :  UCRL-TR-113867-08
PID  :  OSTI ID: 945826
Others  :  TRN: US0901247

美国|英语

来源: SciTech Connect

【 摘 要 】

This annual report is prepared pursuant to the National Emission Standards for Hazardous Air Pollutants (NESHAPs; Title 40 Code of Federal Regulations [CFR] Part 61, Subpart H). Subpart H governs radionuclide emissions to air from U.S. Department of Energy (DOE) facilities. NESHAPs limits the emission of radionuclides to the ambient air from DOE facilities to levels resulting in an annual effective dose equivalent (EDE) of 10 mrem (100 {micro}Sv) to any member of the public. The EDEs for the Lawrence Livermore National Laboratory (LLNL) site-wide maximally exposed members of the public from operations in 2007 are summarized here. Livermore site: 0.0031 mrem (0.031 {micro}Sv) (42% from point source emissions, 58% from diffuse source emissions). The point source emissions include gaseous tritium modeled as tritiated water vapor as directed by the U.S. Environmental Protection Agency (EPA) Region IX; the resulting dose is used for compliance purposes. Site 300: 0.0035 mrem (0.035 {micro}Sv) (90% from point source emissions, 10% from diffuse source emissions). The EDEs were calculated using the U.S. EPA-approved CAP88-PC air dispersion/dose-assessment model, except for doses for two diffuse sources that were estimated using measured radionuclide concentrations and dose calculations. Specific inputs to CAP88-PC for the modeled sources included site-specific meteorological data and source emissions data, the latter variously based on continuous stack effluent monitoring data, stack flow or other release-rate information, ambient air monitoring data, and facility knowledge.