Calculating Toxic Corridors.
Abstract
Method for defining evacuation areas for accidental spills of toxic chemicals are presented. These spills can present serious health hazards to people exposed to excessive vapor concentrations downwind of the accident. An empirical diffusion equation is used to calculate the downwind hazard distance. The width of the toxic corridor specified in angular degrees centered along the mean wind direction, is based upon the variability of the wind direction. Flexibility in estimating toxic corridor evacuation areas is allowed through a choice of four different methods involving the use of tables, nomograms, and a programmable calculator. Appendices present worksheets, example problems, procedures for determining meteorological inputs, a procedure for determining evaporative source strength, and other items.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1980
- Accession Number
- ADA101267
Entities
People
- Jon P. Kahler
- Raymond A. Kandler
- Robert G. Curry