[en] 1 - Description of program or function: HADOC (Hanford Acute Dose Calculations) calculates external and inhalation doses resulting from postulated accidental radionuclide releases on the Hanford site. It generates doses to an individual at a specified location and to the population in the region near the Hanford site for specified organs. Doses reported include the maximally exposed individual's dose (by organ and exposure mode) in the sector having the highest population exposure factor. The first year and fifty-year dose commitments are reported. Optional reports giving the fractional contribution to total dose by radionuclide for each organ and dose commitment period for a maximally exposed individual and the population may be printed. 2 - Method of solution: Atmospheric dispersion is calculated using the Hanford dispersion model with building wake effects and terrain elevation considered as options. For elevated releases, the worst case dispersion conditions may be determined by considering Pasquill dispersion categories A-F. The maximally exposed individual dispersion factor is calculated using the bivariate Gaussian dispersion equation. The population dose is calculated for the sector having the highest population exposure factor as determined by the dispersion factors and the specified population distribution. The decay of the released radionuclide activities is considered during transit from the release point to the location of the maximally exposed individual, MI, and to the center of each population ring. Decay times are based on user supplied average wind speeds. A decay chain processor with multiple branching is used to calculate decayed activities. 3 - Restrictions on the complexity of the problem: - The organs available in the NUCDFL library are total body, kidney, liver, bone, lungs, thyroid, and large lower intestine