Emergency and Continuous Exposure Guidance Levels for Selected Submarine Contaminants Volume 3 (2009) / Chapter Skim
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1 Introduction
1 Introduction
Pages 8-19
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. As a follow-on activity, the Navy requested review of an additional five chemicals, and NRC convened a second Committee on Emergency and Continuous Exposure Guidance Levels for Selected Submarine Contaminants in 2008.
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Specifically, the Navy asked the committee to review guidance levels for acetaldehyde, hydrogen chloride, hydrogen fluoride, hydrogen sulfide, and propylene glycol dinitrate. See Appendix B for a verbatim statement of task.
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Other sources include control equipment, the power train, weapons systems, batteries, sanitary tanks, airconditioning and refrigeration systems, and a variety of maintenance and repair activities. Several onboard methods are used to maintain a livable atmosphere and remove air contaminants (NRC 1988b)
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130 men patrols of variable length Nuclear-powered ballistic- 2 rotating crews of Regularly scheduled patrols; 90missile submarines (SSBN) 160 men each day cycle between ship and shore; patrols over 60 days long a Note that there are three classes of attack submarines -- Los Angeles, Seawolf, and Virginia -- and one class of ballistic-missile submarines -- Ohio.
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12 FIGURE 1-1 Generalized schematic of a nuclear-powered attack submarine. Source: Adapted from image courtesy of the Smithsonian/NMAH Transportation.
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A portable oxygen detector verifies oxygen concentrations weekly. Colorimetric detector tubes are used weekly to measure concentrations of acetone, ammonia, benzene, carbon dioxide, carbon monoxide, chlorine, hydrazine, hydrochloric acid, methyl chloroform, monoethanolamine, nitrogen dioxide, ozone, sulfur dioxide, toluene, and total hydrocarbons.
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• Human studies were preferred for deriving exposure guidance levels. The committee considered human data from accidental exposures, experimental studies, and epidemiologic studies to be valuable in determining the effects of chemical exposure.
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The specific approaches adopted by the committee for developing EEGLs and CEGLs are outlined below. Emergency Exposure Guidance Levels NRC (1986b)
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but acknowledges that there is value in conducting such evaluations and has proposed 90-day CEGLs for known and suspected human carcinogens. Comparison with Other Regulatory Standards or Guidance Levels In its evaluations, the committee considered relevant inhalation exposure standards or guidance levels put forth by NRC and other agencies or organizations.
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2003. Emergency and Continuous Exposure Guidance Levels for Selected Submarine Contaminants.
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1987. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol.
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2008. Emergency and Continuous Exposure Guidance Levels for Selected Submarine Contaminants: Volume 2.
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