File:NationalResearchCoun 2009 EmergencyandContinuousExposureGuidanceLe Vol 2.pdf: Difference between revisions

Description

This source is from the second volume of a National Research Council report providing recommendations for 1-h and 24-h EEGLs and 90-day CEGLs for additional chemicals relevant to the Navy. Chemicals covered in this volume include ammonia, benzene, DBNP, Freon 12, Freon 114, hydrogen, 2190 oil mist, ozone, surface lead, toluene, and xylene. The report highlights substantial differences in the adequacy of datasets for these chemicals, noting a particular paucity of data available for determining the effects of inhalation exposure to DBNP. It states that for some chemicals, like benzene and ozone, there are robust datasets, while for others, like DBNP, there is limited data. Potential sources of ozone in a submarine are listed as motors, vent-fog precipitators, copying machines, and laser printers. Ozone is described as a potent irritant to the upper and lower airways that results in impairments in pulmonary function and increased airway hyperresponsiveness. For surface lead, the committee could not recommend exposure guidance levels but endorsed monitoring submariner blood lead concentrations to determine if surface contamination is resulting in appreciable exposure. Specific research needed to improve confidence in derived exposure levels is provided in individual chemical profiles.

Abstract

This second volume report by the National Research Council provides EEGL and CEGL recommendations for chemicals such as ammonia, benzene, DBNP, ozone, and surface lead. It notes the limited inhalation toxicity data for DBNP and discusses potential sources and toxicity of ozone and the importance of monitoring surface lead exposure in submariners.