Hanford Tank Ventilation System Condensates and Headspace Vapors: An Assessment of Potential Dermal Exposures

Huckaby, James L. ; Springer, David L.

Pacific Northwest National Laboratory (U.S.)

关键词: Occupational Exposure;    Inhalation;    Us Epa;    Absorption;    Ventilation Systems;   

DOI  :  10.2172/881942
RP-ID  :  PNNL-15778
RP-ID  :  AC05-76RL01830
RP-ID  :  881942

美国|英语

来源: UNT Digital Library

【 摘 要 】

This study considers the question of whether potential dermal exposures to Hanford high-level radioactive waste tank headspace vapors and their condensates could result in significant exposure to workers. Three types of potential exposures were evaluated; dermal contact with aqueous condensate, organic condensate, and direct contact with head space vapors. The dermal absorption rates from aqueous and organic condensates were estimated for selected chemicals using a model described by EPA (1992) with a modified correlation for dermal permeability suggested by Wilschut et al. (1995). Dermal absorption rates of vapors were estimated using a model given by AIHA (2000). Results were compared to an ''equivalent inhalation dose'' calculated by multiplying the inhalation occupational exposure limit by a nominal daily inhalation rate. The results should provide guidance for industrial hygienists to prepare specific recommendations based on specific scenarios.