Environmental Protection Department, Operations and Regulatory Affairs Division, LLNL NESHAPs 2006 Annual Report

Larson, J ; Peterson, S ; Wilson, K R

Lawrence Livermore National Laboratory

关键词: Radioactivity;    61 Radiation Protection And Docimetry;    Lawrence Livermore National Laboratory;    Monitoring;    Us Epa;   

DOI  :  10.2172/921761
RP-ID  :  UCRL-TR-113867-06
RP-ID  :  W-7405-ENG-48
RP-ID  :  921761

美国|英语

来源: UNT Digital Library

【 摘 要 】

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 2006 are summarized here. Livermore site: 0.0045 mrem (0.045 {micro}Sv) (36% from point source emissions, 64% 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: 0.016 mrem (0.16 {micro}Sv) (87.5% from point source emissions, 12.5% from diffuse source emissions). The EDEs were calculated using the 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 coefficients. 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.