April 24, 2006
Report

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

Abstract

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.

Revised: May 1, 2006 | Published: April 24, 2006

Citation

Huckaby J.L., and D.L. Springer. 2006. Hanford Tank Ventilation System Condensates and Headspace Vapors: An Assessment of Potential Dermal Exposures Richland, WA: Pacific Northwest National Laboratory.