LLNL NESHAPs 2002 Annual Report

Harrach, R J ; Gallegos, G M ; Peterson, S-R ; Tate, P J ; Bertoldo, N A ; Wilson, K R ; Althouse, P E ; Larson, J M

Lawrence Livermore National Laboratory

关键词: Lawrence Livermore National Laboratory;    Monitoring;    Us Epa;    Air;    Compliance;   

DOI  :  10.2172/15004534
RP-ID  :  UCRL-ID-113867-03
RP-ID  :  W-7405-ENG-48
RP-ID  :  15004534

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来源: UNT Digital Library

【 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 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 2002 are summarized here: (1) Livermore site: 0.023 mrem (0.23 {micro}Sv) (43% from point-source emissions, 57% from diffuse-source emissions). The point-source emissions include gaseous tritium modeled as tritiated water vapor as directed by EPA Region IX; the resulting dose is used for compliance purposes; and (2) Site 300: 0.021 mrem (0.21 {micro}Sv) (85% from point-source emissions, 15% from diffuse-source emissions). The EDEs were calculated using the EPA-approved CAP88-PC air dispersion/dose-assessment model, except for doses for three diffuse sources, which were calculated from measured concentrations and dose coefficients. Site specific meteorological data, stack flow data, and emissions estimates based on radionuclide usage inventory data or continuous stack monitoring data were the specific inputs to CAP88-PC for each modeled source.